EIGHTEENTH EDITION, 

2011 

LIST OF LEAK DETECTION EVALUATIONS 

 FOR 

 STORAGE TANK SYSTEMS 

January 11, 2011

 

 

 

 

 

 

 

 

 

 

 

WWW.NWGLDE.ORG

i 
DISCLAIMER 

GENERAL

Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it 

any guarantee of the performance of the method or equipment. Equipment should be installed and 

operated in accordance with all applicable laws and regulations. 

This list of Leak Detection Evaluations was prepared by a work group consisting of State and EPA 

members and is limited to evaluations of leak detection equipment and procedures or systems, 

conducted by an “independent third-party evaluator” (see Appendix “Glossary of Terms”) and 

reviewed by the work group. This list includes evaluations conducted in accordance with either EPA 

Standard Test Procedures for Evaluating Leak Detection Methods (EPA/530/UST-90/004 through 

010) or other test procedures accepted by the NWGLDE as equivalent to the EPA standard test 

procedures (see Part III “Acceptable Test Protocols”). 

The National Work Group on Leak Detection Evaluations (NWGLDE) does not guarantee the 

performance of any leak detection method or equipment appearing on this List, nor does it warrant 

the results obtained through the use of such methods or equipment. 

SPECIFIC

The NWGLDE does not evaluate methods or equipment and appearance on this List does not 

mean they are automatically acceptable for use in any particular state or local jurisdiction. 

The NWGLDE List is not an EPA List, nor does appearance on this list constitute endorsement or 

approval by the NWGLDE or EPA. Anyone claiming that a device or method is “EPA approved” 

because it appears on this list is making a false claim. 

The NWGLDE makes no representations concerning the safe operation of any method or 

equipment. Users of any method or equipment appearing on this List assume full responsibility 

for the proper and safe operation of said equipment and assume any and all risks associated 

with its use. 

On each data sheet, this List reports parameters and data values for methods, equipment, and 

software that are specific to the most current third-party evaluation submitted to the NWGLDE. 

Subsequent modifications or changes to the method, equipment, or software may produce 

parameters and data values that are significantly different than the listed third-party evaluation 

parameters and data values. It is the responsibility of the local implementing agency to accept 

or reject those modifications or changes. 

Since long term material compatibility with the product stored is not addressed in test 

procedures and evaluations, the NWGLDE makes no representations as to the compatibility of 

leak detection equipment with the product stored. 

Unless specifically indicated on the individual data sheets, the equipment listed by the NWGLDE 

has not been evaluated using alternative fuels. 

ii 
Alabama Department of Environmental Management 

adem.alabama.gov

 January 11, 2011 

MEMORANDUM

TO: Vendors of Leak Detection Equipment/Systems, Regulators, and Other Interested Parties 

FROM: Curt D. Johnson, NWGLDE Chair CDJ

RE: National Work Group on Leak Detection Evaluation’s (NWGLDE) 

 List of Leak Detection Evaluations for Storage Tank Systems 

The National Work Group on Leak Detection Evaluations is proud to make available our 18th Edition, 2011 

of the “List of Leak Detection Evaluations for Storage Tank Systems”. Each year the NWGLDE 

publishes a new edition of the “List” that can be downloaded from our web site. This and all previous 

editions of the “List” are available from our web site on the “Downloads” page in both Adobe ® Portable 

Document Format (PDF) and Microsoft ® Word format (DOC). There is also a web site version of the “List” 

that is kept up-to-date with new and revised listings on a monthly basis throughout the year. Changes made 

to the web site “List” since the issue date of the most recent edition of the “List” are noted on our web site 

under “News and Events”. We invite you to visit our web site at the following address: 

http://www.nwglde.org/ 

For help with accessing anything on our web site, please contact our web master, Marcia Poxson, at 

poxsonm@michigan.gov, or give her a call at (517) 373-3290. 

If you need to contact members of the work group, information is included for contacting them after this 

memo. Also, the work group team and team leaders are listed on the page following the member “List” to 

help you determine whom you may need to contact. However, this information is more likely to be current on 

our web site and can be found under “Group Members” and “Team Leaders”. 

Vendors should send new third-party evaluations, which were performed by an “independent third-party 

evaluator” (see Glossary of Terms), to be reviewed by the work group to the team leader and all the 

members of the team. To enable the work group to properly review the evaluations, one (1) copy of all 

applicable information indicated in the enclosed "Leak Detection Equipment Review - Document List" must 

be sent to the team leader and each team member. 

In the interest of expediting third-party evaluation reviews, maintaining consistency among 

evaluations, and adhering to the accepted evaluation protocols, the NWGLDE has adopted the 

following policies: 

1. In order for an evaluation to be listed, third-party evaluation reports must clearly state which 

protocol was used to conduct the evaluation. The Work Group will not review any evaluations that 

do not follow either: 

a. An EPA protocol, or 

b. An alternative protocol, e.g., a national voluntary consensus standard or other accepted test 

procedures developed by an independent third-party. Currently, the mechanism to obtain 

approval of alternative protocols is to first submit them to a peer review committee. Once the peer 

review committee determines that the protocol conforms with the minimum requirements as 

iii 
iv 

 described in the "Forward" to each of the EPA protocols, they will forward the protocol to the 

appropriate Work Group Team Leader and recommend that the Work Group add the protocol to the 

“List”. The Work GroupTeam will then review the protocol to confirm the peer review committee 

determination. 

c. An existing protocol that has been amended for a specific evaluation. Currently, the mechanism 

to obtain approval of amended protocols is to have the evaluator submit the amendment to the 

appropriate Work Group Team Leader prior to conducting the evaluation. The Team will review 

the amendment and either approve it or suggest modifications. 

2. Changes to a listed protocol need to be discussed with the Work Group before testing, or before 

continuing testing if the evaluator identifies concerns during testing. Regular communication with 

Work Group members can expedite an evaluation's review. 

3. If a problem is discovered with a third-party test after a system data sheet has been added to the 

“List”, or if a listed system is modified by the vendor in such a way that the changes affect how it 

detects and/or quantifies a leak, the vendor shall be given a reasonable time period to provide the 

necessary information to clarify or modify the listing. The data sheet listing may be removed from 

the “List” if: 

a. The vendor must re-evaluate the system, 

b. The vendor fails to meet the time frame set by the Work Group, 

c. The vendor fails to respond to take the appropriate actions. 

The system data sheet may be reinstated on the “List” after all third-party test concerns are 

resolved. If concerns cannot be resolved or if there is no response from the vendor, the system will 

no longer appear on the “List”. 

Since the first draft “List” was sent out back in January of 1995, the “List” has sometimes been referred to as 

the "EPA work group list of approved leak detection equipment". The work group and EPA are concerned 

that similar statements may appear in sales literature distributed by vendors. We request that no one refer to 

the “List” in this way for the following reasons: 

1. This is not an EPA or EPA work group list. This “List” was prepared by an independent work group 

consisting of state and EPA members. 

2. Neither EPA nor the work group approves leak detection equipment or procedures. The “List” does 

not include "approved" leak detection equipment/procedures. It includes leak detection 

equipment/procedures that the work group has reviewed. This review has confirmed that the leak 

detection equipment/procedures were third-party tested in accordance with either an EPA or other 

acceptable test protocol. The review also confirmed that the equipment/procedures met EPA performance 

standards under test conditions. Approval or acceptance of leak detection equipment and procedures is 

the responsibility of the implementing agency, which in most cases is the state environmental agency. 

Please read the work group “Disclaimer” on page ii. 

Attachments: Work Group Members, Work Group Teams, Leak Detection Equipment Review Document 

List, Latest Edition of List of Leak Detection Evaluations for UST Systems 
NWGLDE LEAK DETECTION EQUIPMENT/METHOD EVALUATION REVIEW - DOCUMENT LIST 

(Revised November 26, 2008) 

The following is a checklist of the documentation required by the NWGLDE for review of third-party evaluations of storage tank 

system leak detection equipment/methods. As much as possible, please send the information electronically. 

 1. Documentation establishing intellectual property ownership of the leak detection method. 

2. A complete third-party evaluation report, including: 

 a. Details of the evaluation procedure if the EPA standard procedure was not used for the evaluation. If the EPA evaluation 

procedure was used, list any deviations or modifications to the procedure. 

 b. A complete set of all the EPA required attachment sheets. 

 c. Individual test logs and/or field notes. 

 d. Statistical calculations and any applicable graphs or charts generated during the evaluation. 

 e. A statement from the evaluator confirming that all equipment at the test site was properly maintained and calibrated to 

the level of accuracy necessary for a valid evaluation. 

 3. An outline of the manufacturer’s operating procedures for the equipment/system. The summary procedure must be 

dated and include a revision number, if applicable. A copy of the summary procedure must be provided to the third-party 

evaluator for enclosure in the report. Also required is a statement from the manufacturer confirming the use of the submitted 

procedure during the evaluation. 

 4. A complete installation/operations manual for the equipment/system. 

 5. A sample of the test report (including field work-sheets) which will be submitted to the owner/local implementing 

agency. 

 6. An outline of the test procedures in high groundwater areas. These procedures should be reviewed for adequacy by the 

third-party evaluator and a statement to that effect should be included with the report. 

 7. An outline of the test procedures for manifolded tank systems. These procedures should be reviewed for adequacy by 

the third-party evaluator and a statement to that effect should be included with the report. 

 8. An affidavit from the manufacturer confirming that there are no mutual financial interests between the equipment 

manufacturer and the third-party evaluator. 

 9. A resume, including all applicable formal training and experience, from personnel who conducted the evaluation. 

10. Equipment calibration procedures and manufacturer recommended schedule of calibration. 

11. The name, address, e-mail address, and phone number of the technical personnel serving as the manufacturer’s 

representative for the response to the regulatory agency questions on the equipment/system. Also, the URL for the 

manufacturer’s web site, if applicable. 

12. Correspondence letters from state agencies who have reviewed the equipment/system. 

13. The following documentation for all permanently-installed leak detection equipment: 

a. An outline of the maintenance procedure (including a list of the parts or functions of the system to be checked, 

calibrated, or programmed) for the annual functional test by authorized service personnel. 

b. An outline (1-2 pages) “Equipment Check Guidelines for Inspectors” prepared by the manufacturer. This summary 

should guide local agency inspectors on proper field procedures to follow when inspecting equipment for proper operation, for 

attempting to access the stored history (for alarms or failed tests) to determine compliance with state requirements. 

c. A sample of the reports generated and/or printed by the equipment (for all equipment models), and an explanation of the 

items in the report, if not self-explanatory. 

d. Information on how the control panel modules connected to the various probes are labeled. The information on the 

panel should be directly comparable to the equipment name, model/part/probe number which will be included in the 

committee’s list. If necessary, a permanent label containing that information should be affixed to the panel. 

14. The following documentation for the systems using tracer analysis: 

a. The name and certification of the laboratory analyzing vapor samples. 

b. Quality Assurance Manual of the laboratory. 

c. The method and amount of tracer injection. 

d. The vapor sample collection method and chain of custody records. 

e. The third-party certification for capability of the system to detect leaks from the ullage portion of the tank. 

v 
vi 

WORK GROUP MEMBERS Revised 07/10/09

MEMBER ADDRESS PHONE/FAX/E-MAIL 

Curt Johnson, 

Chair 

Alabama Department of Environmental 

Management 

PO Box 301463 

Montgomery, AL 36130-1463 

(334) 271-7986 

Fax (334) 270-5631 

cdj@adem.state.al.us

Lamar Bradley, 

Vice Chair 

Tennessee Department of Environment and 

Conservation 

Division of Underground Storage Tanks 

4th Floor L and C Tower, 401 Church St. 

Nashville, TN 37243-1541 

(615) 532-0952 

Fax (615) 532-9759 

lamar.bradley@state.tn.us

Greg Bareta Engineering Consultant 

Bureau of Storage Tank Regulation 

Division of Environmental and Regulatory Services 

State of Wisconsin – Department of Commerce 

201 West Washington Avenue, 3rd Floor 

Madison, WI 53703 

(608) 267-9795 

Fax (608) 261-7725 

greg.bareta@wisconsin.gov

Michael Juranty New Hampshire Department of Environmental 

Services 

Waste Management Division 

Oil Compliance Section 

PO Box 95 

29 Hazen Drive 

Concord, NH 03302-0095 

(603) 271-6058 

Fax (603) 271-2181 

michael.juranty@des.nh.gov

William Moore Department of Environmental Quality, Division of 

Environmental Response and Remediation 

168 North 1956 West 

PO Box 144840 

Salt Lake City, Utah 84114-4840 

(801) 536-4106 

Fax (801) 359-8853 

billmoore@utah.gov

Marcia Poxson Michigan Department of Environmental Quality 

Waste and Hazardous Materials Division 

Storage Tank Unit 

525 West Allegan Street 

PO Box 30241 

Lansing, MI 48909-7741 

(517) 373-3290 

Fax (517) 335-2245 

poxsonm@michigan.gov

Shaheer Muhanna Georgia DNR - EPD 

4244 International Parkway, Suite 104 

Atlanta, GA 30354 

(404) 362-2579 

Fax (404) 362-2654 

SHAHEER_MUHANNA@dnr.state.ga.us

Helen Robbins Connecticut Department of Environmental Protection 

79 Elm Street 

Hartford, CT 06106 

(860) 424-3291 

Fax (860) 424-4061 

helen.robbins@ct.gov

Peter Rollo DNREC – Tank Management Branch 

391 Lukens Drive 

New Castle, DE 19720 

(302) 395-2500 

Fax (302) 395-2555 

peter.rollo@state.de.us

Tim Smith U.S. EPA/OUST 

 (Mail Address) (Fed Ex Address) 

 1200 Pennsylvania Two Potomac Yard 

 Ave., NW (North Bldg.) 

 5402P 2733 S. Crystal Drive 

 Washington, DC Arlington, VA 

 20460 22202 

(703) 603-7158 

Fax (703) 603-0175 

smith.timr@epamail.epa.gov
vii 

WORK GROUP TEAMS Revised 012/31/09

TEAM LEADER MEMBERS 

Automatic Tank Gauging (ATG) and Volumetric 

Tank Tightness Test (VTTT) Methods 

Lamar Bradley Mike Juranty 

William Moore 

Continuous In-Tank Leak Detection Methods Shaheer Muhanna Helen Robbins 

Non-Volumetric Tank Tightness Test Methods Helen Robbins Mike Juranty 

Line Leak Detection Methods Greg Bareta William Moore 

Statistical Inventory Reconciliation (SIR) Methods Lamar Bradley Shaheer Muhanna 

Interstitial Monitoring and Out-of-Tank Detector 

Methods 

Tim Smith Peter Rollo 

William Moore 

Lamar Bradley 

Aboveground and Bulk Storage Tank Methods Peter Rollo Greg Bareta 

Marcia Poxson 

Secondary and Spill Containment Test Methods William Moore Shaheer Muhanna 

Tim Smith 

Mike Juranty 

List Administration and Surveys Curt Johnson Helen Robbins 

Marcia Poxson 
viii 

Revision Date: September 29, 2010 

TABLE OF CONTENTS 

PART I - LEAK DETECTION TEST METHODS AND EQUIPMENT/SYSTEMS 1 

(Alphabetical by test method, then by vendor, next by equipment/system model, 

and finally by leak rate or operating principle.) 

ABOVEGROUND STORAGE TANK LEAK DETECTION METHOD 2 

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR 3 

AUTOMATIC MECHANICAL LINE LEAK DETECTOR 6 

AUTOMATIC TANK GAUGING METHOD 7 

BULK UNDERGROUND STORAGE TANK LEAK DETECTION METHOD (50,000 gallons or greater) 12 

CONTINUOUS IN-TANK LEAK DETECTION METHOD (CONTINUAL RECONCILIATION) 14 

CONTINUOUS IN-TANK LEAK DETECTION METHOD (CONTINUOUS AUTOMATIC TANK GAUGING)

15 

CONTINUOUS INTERSTITIAL LINE MONITORING METHOD (LIQUID FILLED) 16 

CONTINUOUS INTERSTITIAL LINE MONITORING METHOD (PRESSURE/VACUUM) 17 

CONTINUOUS INTERSTITIAL TANK SYSTEM MONITORING METHOD (PRESSURE/VACUUM) 18 

CONTINUOUS PRESSURIZED PIPING LEAK DETECTION METHOD (CONTINUOUS ELECTRONIC

LINE LEAK DETECTION) 20 

INTERSTITIAL DETECTOR (LIQUID-PHASE) 21 

INTERSTIITIAL TANK TIGHTNESS TEST METHOD 25 

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above) 26 

LINE TIGHTNESS TEST METHOD 27 

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (TRACER) 28 

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE) 29 

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (VACUUM) 31 

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE) 32 

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE) 34 

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUALITATIVE) 35 

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE) 36 

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL) 37 

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL) 38 
ix 

Revision Date: February 3, 2010 

TABLE OF CONTENTS 

PART II - LEAK DETECTION EQUIPMENT/SYSTEMS SPECIFICATIONS 39 

(Alphabetical by vendor, then by test method, next by equipment/system model, 

and finally by leak rate.) 

Absolute Precision Testing Systems 40 

Advanced Fuel Filtration Systems, Inc. (see OPW Fuel Management Systems) 

Advanced Tank Technology, Inc. 41 

Advanced Telemetrics, Ltd. 42 

Agar Corp. 44 

Alert Technologies, Inc. 45 

Ameron International 49 

Andover Controls Corp. 52 

Arizona Instrument Corp. (see Phoenix Technologies Division of Phoenix Group, 

Summit Holdings, Inc. – Oklahoma Environmental, Inc.) 

Armstrong Monitoring Corp. (see AT Monitors) 

ASTTest Services Inc. 55 

AT Monitors (originally Listed as Armstrong Monitoring Corp. and then Sequence Controls, Inc.) 56 

Barton Instrument Systems, LLC 59 

Beaudreau Electric, Inc. (also see Franklin Fueling Systems) 60 

Bell Avon, Inc. 63 

Brooks KWK, Inc. 64 

Caldon, Inc. 65 

Caldwell Systems Corp. (See Simmons Corp.) 

Cambria Corporation 66 

Campo/Miller, Inc. (also see EBW, Inc., Franklin Fueling Systems, 67 

INCON intelligent Controls, Inc., OMNTEC Mfg., Inc.) 

CGRS, Inc. 68 

Chapman Engineering (originally Listed as Environmental Fuel Systems, Inc.) 69 

Clearstone Engineering Ltd. 70 

Coggins Systems, Inc. (see Varec, Inc.) 

Computerizing, Inc. 71 
x 

Revision Date: May 7, 2007 

TABLE OF CONTENTS

PART II - LEAK DETECTION EQUIPMENT/SYSTEMS SPECIFICATIONS 

(Continued) 

Containment Solutions, Inc. (originally listed as Fluid Containment and O/C Tanks) 72 

Control Engineers (see Veeder-Root) 

Dresser Wayne Europe 77 

EBW, Inc. (also see Franklin Fueling Systems) 82 

EFA Technologies, Inc. 87 

Egemin Naamloze Vennootschap 88 

Emco Electronics, Tuthill Transfer Systems (see OPW Fuel Management Systems) 

Endress+Hauser Systems and Gauging (see Varec, Inc.) 

Engineered Systems, Inc. 90 

Engineering Design Group, Inc. 91 

Entropy Limited (see Veeder-Root) 

Environment and Safety 93 

Environmental Fuel Systems, Inc. (See Chapman Engineering) 

Environmental Management Technologies (see SIR Monitor) 

EnviroQuest Technologies Limited (see Veeder-Root) 

EnviroSIR LLC 94 

 

Estabrook EZY CHEK Systems (originally listed as Horner EZY CHEK) 95 

FCI Environmental, Inc. 104 

FDR Services, Inc. 106 

FE Petro, Inc. 107 

Fluid Containment (see Containment Solutions, Inc.) 

Franklin Fueling Systems 111 

Gasboy International (originally evaluated under William M. Wilson's Sons) 134 

Gems Sensors, Inc. (originally listed as IMO Industries, Inc.) 135 

Gilbarco Environmental Products (see Veeder-Root) 

HansaConsult Ingenieurgesellschaft mbH 139 
xi 

Revision Date: September 22, 2009 

TABLE OF CONTENTS

PART II - LEAK DETECTION EQUIPMENT/SYSTEMS SPECIFICATIONS 

(Continued) 

Hansa Consult of North America, LLC 140 

Hasstech (also see OPW Fuel Management Systems and Training and Services Corp.) 141 

Heath Consultants, Inc. (see Purpora Engineering, LLC) 

Hectronic GmbH 144 

HNU Systems, Inc. (see PID Analyzers, LLC) 

Horner EZY CHEK (see Estabrook EZY CHEK Systems) 

Horner Products, Inc. 146 

HT Technologies, Inc. 149 

Ibex Industries 150 

INCON Intelligent Controls, Inc. (see Franklin Fueling Systems) 

IMO Industries, Inc. (see Gems Sensors, Inc.) 

Keekor Environmental Products 151 

L & J Engineering 152 

Leak Detection Systems, Inc. 153 

Leak Detection Technologies, LLC 154 

Leighton O’Brien Technologies Ltd. 156 

Magnetek (see Patriot Sensors and Controls Corp.) 

Mallory Controls 159 

Marconi Commerce Systems (see Veeder-Root) 

Marley Pump Co./Red Jacket (see Veeder-Root) 

MassTech International, Ltd. 161 

Mass Technology Corp. 166 

Mesa Engineering 170 

Mine Safety Appliances 172 

NESCO (see Phoenix Technologies Division of Phoenix Group 

and Summit Holdings, Inc. – Oklahoma Environmental, Inc.) 
xii 

Revision Date: December 26, 2007 

TABLE OF CONTENTS

PART II - LEAK DETECTION EQUIPMENT/SYSTEMS SPECIFICATIONS 

(Continued) 

NDE Environmental Corp. ( see Tanknology) 

O/C Tanks (see Containment Solutions, Inc.) 

OMNTEC Mfg., Inc. 173 

One Plus Corp. 181 

OPW Fuel Management Systems 182 

Patriot Sensors and Controls Corp. (originally listed as MagneTek) 211 

PermAlert 213 

Petro Vend, Inc. (see OPW Fuel Management Systems) 

Phoenix Technologies Division of Phoenix Group 219 

(also see Summit Holdings, Inc. – Oklahoma Environmental, Inc.) 

PID Analyzers, LLC (originally listed as HNU Systems, Inc.) 221 

Pneumercator Company, Inc. 223 

Praxair Services, Inc. 229 

Precision Tank Service, Inc. (see TotalSIR)

Preferred Utilities Manufacturing Corporation 236 

ProTank, Inc. 238 

Purpora Engineering, LLC (originally listed as Heath Consultants, Inc.) 246 

Raychem Corp. (see Tyco Thermal Controls) 

Robertshaw Industrial Productsm 250 

Ronan Engineering Co. 251 

S Bravo Systems, Inc. 257 

Schuster Instruments 258 

Sequence Controls, Inc. (see AT Monitors) 

SGB (Sicherungsgeratebau GmbH) 259 

Simmons Corp. 263 

Simone Engineering, Inc. 268 
xiii 

SIR International, Inc. 269 
xiv 

Revision Date: September 22, 2009 

TABLE OF CONTENTS 

 

PART II - LEAK DETECTION EQUIPMENT/SYSTEMS SPECIFICATIONS 

(Continued) 

SIR Monitor (originally listed as Environmental Management Technologies) 270 

Sir Phoenix, Inc. 271 

Soiltest, Inc. 273 

Sound Products Manufacturing, Inc. (see USTest, Inc.) 

Steel Tank Institute 274 

Summit Holdings, Inc. – Oklahoma Environmental, Inc. 276 

(originally listed as Arizona Instrument Corp., then NESCO, and then 

Phoenix Technologies Division of Phoenix Group) 

Syscorp, Inc. 278 

Tank Automation, Inc. 279 

Tanknology 280 

TeleData, Inc. 292 

Tidel Engineering, Inc. 293 

Tokheim Corp. 302 

TOPS, Inc.(marketed by Westech, Inc.) 303 

TotalSIR (originally listed as Precision Tank Service, Inc.) 304 

Tracer Research Corp. (see Praxair Services, Inc.) 

Training and Services Corp. 306 

Triangle Environmental, Inc. 307 

Tyco Thermal Controls (originally listed as Raychem Corp.) 312 

Universal Sensors and Devices, Inc. 315 

USTest, Inc. (certain listings previously listed as Sound Products Manufacturing, Inc.) 320 

Ustman Industries, Inc. (see Veeder-Root) 

Vaporless Manufacturing 324 

Varec, Inc. (originally listed as Coggins Systems, Inc., 330 

later as Endress + Hauser Systems and Gauging) 

Veeder-Root 337 
xv 

Vista Research, Inc. and Naval Facilities Engineering Service Center 411 
xvi 

Revision Date: October 13, 2006 

TABLE OF CONTENTS 

 

PART II - LEAK DETECTION EQUIPMENT/SYSTEMS SPECIFICATIONS 

(Continued) 

Vista Research, Inc. 415 

Warren Rogers Associates, Inc. 424 

Warrick Controls, Inc. (see Gems Sensors, Inc.) 

Watson Systems, Inc. (see Veeder-Root) 

Western Environmental Resources 428 

Western Fiberglass, Inc. 431 

William M. Wilson's Sons (see Gasboy International) 

World Telemetry, Inc. 434 

Xerxes Corp. 435 

PART III - ACCEPTABLE TEST PROTOCOLS 437 

(Alphabetical by test method, then by protocol date.) 

APPENDIX - GLOSSARY OF TERMS 441 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

1

PART I 

LEAK DETECTION TEST METHODS 

AND EQUIPMENT/SYSTEMS 

ALPHABETICAL BY TEST METHOD, 

THEN BY VENDOR, 

NEXT BY EQUIPMENT/SYSTEM MODEL, 

FINALLY BY LEAK RATE OR OPERATING PRINCIPLE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

2

Revision Date: July 13, 2007 

ABOVEGROUND STORAGE TANK LEAK DETECTION METHOD 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Mass Technology Corp. CBU-1000 AST Leak Detection System 1.717 gph and 0.859 gph/A tank system should 

not be declared tight if the test result indicates 

a loss or gain that equals or exceeds this 

threshold./Surface area 30,172 sq. ft. and 

diameter 196 feet. 

Praxair Services, Inc. Tracer Tight for Large Aboveground Storage Tanks 0.1 gph and 0.005 gph/A tank system should 

not be declared tight when tracer chemical 

greater than the background level is detected 

outside of the tank system./Not limited by 

capacity. 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

3

Revision Date: May 21, 2008

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX PIPLINE CAPACITY 

Campo/Miller, Inc. LS300, LS300 N/C, LS300-120, LS300-120 XLC, 

LS300-120 PLUS, LS300-120 PLUS A/S 

3.0 gph/2.36 gph/35.36 gallons 

EBW, Inc. AS-LS300 Series (Originally listed as Campo/Miller 

LS300-120 PLUS AL, LS300-120 PLUS AL A/S, 

LS300-120 PLUS AL LSI) (for Rigid and/or Flexible 

Pipelines)

3.0 gph/1.5 gph/396.6 gallons (rigid), 

95.5 gallons (flexible), 407.6 gallons (rigid & 

flexible) 

0.2 gph/0.1 gph/163 gallons (rigid), 

39.5 gallons (flexible) 

0.1 gph/0.05 gph/163 gallons (rigid), 

39.5 gallons (flexible) 

Franklin Fueling 

Systems (originally 

listed as INCON 

Intelligent Controls, 

Inc.) 

TS-LLD Line Leak Detector 3.0 gph/1.5 gph/163 gallons 

0.2 gph/0.1 gph/163 gallons 

0.1 gph/0.05 gph/163 gallons 

Franklin Fueling 

Systems (originally 

listed as INCON 

Intelligent Controls, 

Inc.) 

TS-LLD Line Leak Detector 

(for Flexible Pipelines) 

3.0 gph/1.5 gph/49.6 gallons 

0.2 gph/0.1 gph/49.6 gallons 

0.1 gph/0.05 gph/49.6 gallons 

Franklin Fueling 

Systems 

TS-LS300 Series (Originally listed as Campo/Miller 

LS300-120 PLUS AL, LS300-120 PLUS AL A/S, 

LS300-120 PLUS AL LSI) (for Rigid and/or Flexible 

Pipelines)

3.0 gph/1.5 gph/396.6 gallons (rigid), 

95.5 gallons (flexible), 407.6 gallons (rigid & 

flexible) 

0.2 gph/0.1 gph/163 gallons (rigid), 

39.5 gallons (flexible) 

0.1 gph/0.05 gph/163 gallons (rigid), 

39.5 gallons (flexible) 

Franklin Fueling 

Systems 

TS-LS500, TS-LS500E Series 

(for Rigid and/or Flexible Pipelines) 

3.0 gph/1.5 gph/312.2 gallons (rigid), 95.4 

gallons (flexible), 415.8 gallons (rigid & flexible) 

0.2 gph/0.1 gph/312.2 gallons (rigid), 95.4 

gallons (flexible), 415.8 gallons (rigid & flexible) 

0.1 gph/0.05 gph/312.2 gallons (rigid), 95.4 

gallons (flexible), 415.8 gallons (rigid & flexible) 

OMNTEC Mfg., Inc. OMNTEC PLLD, (Originally listed as Campo/Miller 

LS300-120 PLUS AL, LS300-120 PLUS AL A/S, 

LS300-120 PLUS AL LSI) (for Rigid and/or Flexible 

Pipelines)

3.0 gph/1.5 gph/396.6 gallons (rigid), 

95.5 gallons (flexible), 407.6 gallons (rigid & 

flexible) 

0.2 gph/0.1 gph/163 gallons (rigid), 

39.5 gallons (flexible) 

0.1 gph/0.05 gph/163 gallons (rigid), 

39.5 gallons (flexible) 

OPW Fuel Management 

Systems (originally 

listed as Emco 

Electronics, Tuthill 

Transfer Systems) 

EECO System LLD (Q0011) 3.0 gph/2.0 gph/67.4 gallons 

0.2 gph/0.1293 gph/67.4 gallons 

0.1 gph/0.0793 gph/67.4 gallons 

OPW Fuel Management 

Systems (originally 

listed as Emco 

Electronics, Tuthill 

Transfer Systems) 

EECO System LLD 

(for Flexible Pipelines) 

3.0 gph/2.0 gph/49.6 gallons 

0.1 gph/0.0793 gph/49.6 gallons 

OPW Fuel Management 

Systems (originally 

listed as Hasstech and 

later as Petro Vend, 

Inc.) 

LineTite Pipeline Leak Monitor 3.0 gph/2.0 gph/341 gallons 

0.1 gph/0.062 gph/341 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

4

Revision Date: December 23, 2002

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR - Continued 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX PIPELINE CAPACITY 

OPW Fuel Management 

Systems 

(originally listed as 

Hasstech and later as 

Petro Vend, Inc.) 

LineTite Pipeline Leak Monitor 

(for Flexible Pipelines) 

3.0 gph/2.0 gph/49.6 gallons 

0.1 gph/0.062 gph/49.6 gallons 

OPW Fuel Management 

Systems 

(originally listed as 

Hasstech and later as 

Petro Vend, Inc.) 

LineTight Pipeline Leak Monitor Model 2001J 3.0 gph/2.5 gph/172 gallons 

0.1 gph/0.05 gph/172 gallons 

OPW Fuel Management 

Systems 

(originally listed as 

Hasstech and later as 

Petro Vend, Inc.) 

LineTight Pipeline Leak Monitor Model 2001J 

(for Flexible Pipelines) 

3.0 gph/2.5 gph/39.5 gallons 

0.1 gph/0.05 gph/39.5 gallons 

Ronan Engineering Co. Ronan X-76 Automatic Line Leak Detector with 

Version X-76 DM-4 Microprocessor and JT-H2 Line 

Pressure Sensor 

3.0 gph/0.831 gph/45 gallons 

0.1 gph/0.066 gph/45 gallons 

Tidel Engineering, Inc. LIPSPC-301-0730-001, LIP-301-0729-001 

Line Integrity Probe and Submersible Pump 

Controller 

3.0 gph/2.0 gph/129 gallons 

0.1 gph/0.06 gph/129 gallons 

Vaporless 

Manufacturing 

Vaporless LD-2100 or PLC-5000 with 98LD-2000PLC 

(for Rigid and Flexible Pipelines) 

3.0 gph/2.5 gph/172 gallons (rigid), 

39.5 gallons (flexible) 

0.2 gph/0.136 gph/172 gallons (rigid), 

39.5 gallons (flexible) 

0.1 gph/0.068 gph/172 gallons (rigid), 

39.5 gallons (flexible) 

Veeder-Root (originally 

listed as Control 

Engineers) 

Line Leak Detector, Model LLP2 3.0 gph/1.88 gph/89 gallons 

0.1 gph/0.05 gph/89 gallons 

Veeder-Root (originally 

listed as Marley Pump 

Co.) 

Red Jacket PPM 4000, RLM 9000 3.0 gph/2.0 gph/55.1 gallons 

0.2 gph/0.1 gph/55.1 gallons 

0.1 gph/0.047 gph/55.1 gallons 

Veeder-Root (originally 

listed as Marley Pump 

Co.) 

Red Jacket PPM 4000, RLM 9000, ST 1401L, 

ST1801L 

(for Flexible Pipelines) 

0.2 gph/0.1 gph/27.6 gallons 

0.1 gph/0.05 gph/27.6 gallons 

Veeder-Root (originally 

listed as Marley Pump 

Co.) 

Red Jacket ST 1401L, ST1801L, CPT, ProLink 3.0 gph/1.5 gph/172 gallons 

0.2 gph/0.1 gph/163 gallons 

0.1 gph0.047gph/163 gallon 

Veeder-Root TLS-350, 350PC, 350R, 350RPC, 

350Plus, Red Jacket ProMax 

Line Leak Detector, Series 8475 

3.0 gph/1.5 gph/158 gallons 

0.2 gph/0.1 gph/158 gallons 

0.1 gph/0.079 gph/158 gallons 

Veeder-Root (originally 

listed as Gilbarco 

Environmental Products 

and later as Marconi 

Commerce Systems) 

EMC Environmental Management Console 

with Line Leak Detector 

Series PA02630000501 (Same as Veeder-Root Series 

8475) 

3.0 gph/1.5 gph/158 gallons 

0.2 gph/0.1 gph/158 gallons 

0.1 gph/0.079 gph/158 gallons 

Veeder-Root TLS-350, 350PC, 350R, 350RPC, 

350Plus, Red Jacket ProMax 

Line Leak Detector, Series 8475 

(for Flexible Pipelines) 

3.0 gph/1.5 gph/49.6 gallons 

0.2 gph/0.1 gph/49.6 gallons 

0.1 gph/0.079 gph/49.6 gallons 

Veeder-Root (originally 

listed as Gilbarco 

Environmental Products 

and later as Marconi 

Commerce Systems) 

EMC Environmental Management Console 

with Line Leak Detector 

Series PA02630000501 (Same as Veeder-Root Series 

8475) 

 (for Flexible Pipelines) 

3.0 gph/1.5 gph/49.6 gallons 

0.2 gph/0.1 gph/49.6 gallons 

0.1 gph/0.079 gph/49.6 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

5

Revision Date: October 14, 2009

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR - Continued 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX PIPELINE CAPACITY 

Veeder-Root TLS 350, 350PC, 350R, 350RPC, 

350Plus, Red Jacket ProMax 

Line Leak Detector, with Series 8484 

PLLD and TLS 450 with Series 8590 DPLLD 

3.0 gph/1.88 gph/98.4 gallons 

0.2 gph/0.17 gph/98.4 gallons 

0.1 gph/0.05 gph/98.4 gallons 

Veeder-Root (originally 

listed as Gilbarco 

Environmental Products 

and later as Marconi 

Commerce Systems) 

EMC Environmental Management Console 

with Line Leak Detector 

Series PA0263000060X (Same as Veeder-Root Series 

8484) 

3.0 gph/1.88 gph/98.4 gallons 

0.2 gph/0.17 gph/98.4 gallons 

0.1 gph/0.05 gph/98.4 gallons 

Veeder-Root TLS 350, 350PC, 350R, 350RPC, 350Plus, 

LLD-300, Red Jacket ProMax 

Line Leak Detector, with Series 8484 

PLLD and TLS 450 with Series 8590 DPLLD 

(for Flexible Pipelines) 

3.0 gph/1.5 gph/40.8 gallons 

0.2 gph/0.17 gph/40.8 gallons 

0.1 gph/0.05 gph/40.8 gallons 

Veeder-Root (originally 

listed as Gilbarco 

Environmental Products 

and later as Marconi 

Commerce Systems) 

EMC Environmental Management Console 

with Line Leak Detector 

Series PA0263000060X (Same as Veeder-Root Series 

8484) 

(for Flexible Pipelines) 

3.0 gph/1.5 gph/40.8 gallons 

0.2 gph/0.17 gph/40.8 gallons 

0.1 gph/0.05 gph/40.8 gallons 

Veeder-Root TLS 350, 350PC, 350R, 350RPC, 350Plus, 350J, Red 

Jacket ProMax Line Leak Detector, with Series 8484 

PLLD and TLS 450 with Series 8590 DPLLD, Software 

Version X19 or Higher 

(for Rigid and/or Flexible Pipelines) 

3.0 gph/2.0 gph/212 gallons 

Veeder-Root TLS 350, 350PC, 350R, 350RPC, 350Plus, LLD-300, 

Red Jacket ProMax Line Leak Detector, with Series 

8484 PLLD and TLS 450 with Series 8590 DPLLD, 

Software Version X19 or Higher 

(for Rigid and/or Flexible Pipelines) 

3.0 gph/2.0 gph/119.4 gallons 

0.2 gph/0.17gph/119.4 gallons 

0.1gph/0.05 gph/119.4 gallons 

Veeder-Root TLS 350, 350PC, 350R, 350RPC, 350Plus, LLD-300, 

Red Jacket ProMax 

Line Leak Detector, Series 8494, 

Wireless Pressurized Line Leak Detector (WPLLD) 

3.0 gph/2.5 gph/100 gallons 

0.2 gph/0.17 gph/100 gallons 

0.1 gph/0.09 gph/100 gallons 

Veeder-Root (originally 

listed as Gilbarco 

Environmental Products 

and later as Marconi 

Commerce Systems) 

EMC, EMC-PC, EMC Enhanced, EMC-PC Enhanced, 

LMS Environmental Management Consoles with Line 

Leak Detector 

Series PA0263000100X (Same as Veeder-Root Series 

8494) 

PA0277000060X (Same as Veeder-Root Series 8494) 

3.0 gph/2.5 gph/100 gallons 

0.2 gph/0.17 gph/100 gallons 

0.1 gph/0.09 gph/100 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

6

Revision Date: July 6, 2006

AUTOMATIC MECHANICAL LINE LEAK DETECTOR 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX PIPELINE CAPACITY 

FE Petro, Inc. STP-MLD Pipeline Leak Detector 3.0 gph/2.0 gph/129.14 gallons 

FE Petro, Inc. STP-MLD-D Pipeline Leak Detector 3.0 gph/2.0 gph/341 gallons 

FE Petro, Inc. STP-MLD-E Flexline Line Leak Detector 

(for Flexible Pipelines) 

3.0 gph/2.0 gph/49.6 gallons 

FE Petro, Inc. STP-MLD-HC and STP-MLD-HCD Pipeline Leak 

Detectors 

(for Rigid and/or Flexible Pipelines) 

3.0 gph/2.0 gph/396.6 gallons (rigid), 

95.5 gallons (flexible), 

492.1 gallons (rigid & flexible) 

Tokheim Corp. Tokheim Pressure Monitor, Models PM 101, 

585A-PM 

3.0 gph/2.25 gph/78 gallons 

Vaporless 

Manufacturing 

Vaporless LD-2000, LD-2000S 3.0 gph/1.7 gph/129 gallons 

Vaporless 

Manufacturing 

Vaporless LD-2000E, LD-2000E-S 

(for Flexible Pipelines) 

3.0 gph/2.0 gph/59.6 gallons 

Vaporless 

Manufacturing 

Vaporless LD-2000T, LD-2000T-S 3.0 gph/2.5 gph/129 gallons 

Vaporless 

Manufacturing 

Vaporless 98LD-2000, 99LD-2000, 99LD-2200, 

LD-2200 Scout 

(for Rigid and Flexible Pipelines) 

3.0 gph/2.5 gph/172 gallons (rigid), 

39.5 gallons (flexible) 

Vaporless 

Manufacturing 

Vaporless LD-3000, LD-3000S 3.0 gph/2.0 gph/320 gallons 

Veeder-Root 

(originally listed as 

Marley Pump Co.) 

Red Jacket DLD, XLD 3.0 gph/2.0 gph/129 gallons 

Veeder-Root 

(originally listed as 

Marley Pump Co.) 

Red Jacket FX1,FX2 3.0 gph/2.0 gph/316 gallons (FX1), 

3.0 gph/2.0 gph/362 gallons (FX2) 

Veeder-Root 

(originally listed as 

Marley Pump Co.) 

Red Jacket FX1,FX2 Flexline 

(for Flexible Pipelines) 

3.0 gph/2.0 gph/49 gallons 

Veeder-Root 

(originally listed as 

Marley Pump Co.) 

Red Jacket FX1D,FX2D, FX1DV, FX2DV Installed in 

the Big-Flow 

3.0 gph/2.0 gph/362 gallons 

Veeder-Root 

(originally listed as 

Marley Pump Co.) 

Red Jacket FX1DV, FX2DV Installed in the Big-Flow 

(for Flexible Pipelines) 

3.0 gph/2.0 gph/39.4 gallons 

Veeder-Root Red Jacket FX1V, FX2V in Big Flow or Packer 

Manifold (for Rigid and Flexible Pipelines) 

3.0 gph/1.5 gph/416.7 gallons (for Rigid 

Pipelines) 95.4 gallons (for Flexible Pipelines) 

Veeder-Root 

(originally listed as 

Marley Pump Co.) 

Red Jacket XLP 3.0 gph/2.0 gph/129 gallons 

Veeder-Root 

(originally listed as 

Marley Pump Co.) 

Red Jacket XLP 

(for Flexible Pipelines) 

3.0 gph/2.0 gph/48.9 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

7

Revision Date: April 6, 2010

AUTOMATIC TANK GAUGING METHOD 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Advanced Telemetrics, 

Ltd. 

Model 1100LD Version 1.07 0.2 gph/0.1 gph/30,000 gallons 

Alert Technologies, Inc. Alert Model 2000 In-Tank Mass Measurement Probe 

System 

(Mass Buoyancy Probe) 

0.2 gph/0.1 gph/15,000 gallons 

Andover Controls Corp. Andover Infinity, Versions CX9900, CX9400, CX9200, 

CX9000,CMX240 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/30,000 gallons 

Andover Controls Corp. Andover Infinity, Versions CX9000, CX9200, CMX240

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 

Andover Controls Corp. Versions AC8+, AC256+ 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

Barton Instrument 

Systems, LLC 

Barton 3500 ATG 0.2 gph/0.1 gph/75,000 gallons 

Dresser Wayne Europe TIG 5000 0.2 gph Precision Test and Quick Test 

(Q0400-4xx Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

Dresser Wayne Europe TIG 5000 0.1 gph Precision Test and Quick Test 

(Q0400-4xx Magnetostrictive Probe) 

0.1 gph/0.05 gph/15,000 gallons 

Dresser Wayne Europe TIG 1000 (Model 924, 2 inch dia Floats, 

Magnetostrictive Probe) 

0.2 gph/ 0.1 gph/20,000 gallons 

Dresser Wayne Europe TIG 1000 (Model 924, 4 inch dia Floats, 

Magnetostrictive Probe) 

0.2 gph/0.1 gph/20,000 gallons 

0.1 gph/0.053 gph/20,000 gallons 

Egemin Naamloze 

Vennootschap 

E'SPI III 

(Mass Buoyancy Probe) 

0.2 gph/0.075 gph/15,000 gallons 

Egemin Naamloze 

Vennootschap 

E'SPI IV 

(Mass Buoyancy Probe) 

0.2 gph/0.1 gph/15,000 gallons 

Engineered Systems, 

Inc. 

Image II 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

Environment and Safety EASI Level-Tru 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

Franklin Fueling 

Systems (originally 

evaluated under EBW, 

Inc.) 

AutoStik 

(Magnetostrictive Probe) 

As of April 1, 2009, Franklin Fueling Systems 

no longer manufactures this method.

0.2 gph/0.1 gph/15,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 

Franklin Fueling 

Systems (originally 

listed as EBW, Inc.) 

AutoStik II, AutoStik Jr. 

(Magnetostrictive Probe)

As of April 1, 2009, Franklin Fueling Systems 

no longer manufactures this method.

Certification applies to those sold before March 

1, 2004.

0.2 gph/0.1 gph/15,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 

Franklin Fueling 

Systems (originally 

listed as EBW, Inc.) 

AutoStik II, AutoStik Jr. 

(Magnetostrictive Probe)

As of April 1, 2009, Franklin Fueling Systems 

no longer manufactures this method.

Certification applies to those sold on March 1, 

2004 to April 1, 2009.

0.2 gph/0.1 gph/15,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 

Franklin Fueling 

Systems (originally 

listed as EBW, Inc.) 

AutoStik II, AutoStik Jr. 

(INCON, EBW LL2 Magnetostrictive Probe)

As of April 1, 2009, Franklin Fueling Systems 

no longer manufactures this method.

Certification applies to those sold on March 1, 

2004 to April 1, 2009.

0.2 gph/0.1 gph/30,000 gallons 

Franklin Fueling 

Systems (originally 

listed as INCON 

Intelligent Controls, 

Inc.) 

TS 2000 

(Magnetostrictive Probe) 

0.2 gph/0.058 gph/15,000 gallons 

Franklin Fueling 

Systems 

INCON T1 Series TS-750, TS-1000, TS-1001, 

TS-2000, TS-2001, 

INCON T5 Series, TS-5, TS-608, TS-550, TS-5000, 

Franklin Colibri CL6 & TS-CL6 Series 

(INCON Magnetostrictive Probe) 

0.2 gph/0.1 gph/30,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

8

Revision Date: November 9, 2010

AUTOMATIC TANK GAUGING METHOD - Continued 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Gasboy International 

(originally evaluated 

under William M. 

Wilson's Sons) 

Gasboy TMS 500 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

Hasstech Tank Compliance Center, Model 700 

(7100 Series Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 

Hectronic GmbH Optilevel Electronic Level Gauge Sensor 

HLS 3010 HF (Capacitance Probe) 

0.2 gph/0.1 gph/20,000 gallons 

Keekor Environmental 

Products 

TankTite Leak Detection Kernel Version 1.0 with 

Keeprobe K7 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

L & J Engineering, Inc. MCG 1100/MCG 8100 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 

OMNTEC Mfg., Inc. OEL 8000, K-OEL 8000, OEL 8000 II, 

K-OEL 8000 II 

(MTG - XX Magnetostrictive Probe, 4 inch dia Floats) 

0.2 gph/0.1 gph/30,000 gallons 

OMNTEC Mfg., Inc. OEL 8000, K-OEL 8000 

(MTG - XX Magnetostrictive Probe, 4 inch dia Floats) 

0.1 gph/0.05 gph/15,000 gallons 

OPW Fuel Management 

Systems (originally 

listed as Emco 

Electronics, Tuthill 

Transfer Systems) 

EECO System 1000, 1500, 2000, 3000 and Galaxy 

0.2 gph Precision Test and Quick Test 

(Q0400-4xx Magnetostrictive Probe or OPW 924\B 

TLM-B Magnetostrictive probe) 

0.2 gph/0.1 gph/15,000 gallons 

OPW Fuel Management 

Systems (originally 

listed as Emco 

Electronics, Tuthill 

Transfer Systems) 

EECO System 1000, 1500, 2000, 3000 and Galaxy 

0.1 gph Precision Test and Quick Test 

(Q0400-4xx Magnetostrictive Probe) 

0.1 gph/0.05 gph/15,000 gallons 

OPW Fuel Management 

Systems (originally 

listed as Petro Vend, 

Inc.) 

Petrosonic III 

(Version 4.05 Model 613, 4 inch dia Floats, 

Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

OPW Fuel Management 

Systems (originally 

listed as Petro Vend, 

Inc.) 

Site Sentinel Models 2 and 3, 

 (Model 613, 2 inch dia Floats, Magnetostrictive 

Probe) 

0.2 gph/0.1 gph/15,000 gallons 

OPW Fuel Management 

Systems (originally 

listed as Petro Vend, 

Inc.) 

Site Sentinel Models 2 and 3, 

(Model 613, 4 inch dia Floats, Magnetostrictive 

Probe) 

0.2 gph/0.1 gph/15,000 gallons 

0.1 gph/0.06 gph/15,000 gallons 

OPW Fuel Management 

Systems (originally 

listed as Petro Vend, 

Inc.) 

Site Sentinel Models 1, 2 and 3, iTouch

 (Model 924A, 2 inch dia Floats, Magnetostrictive 

Probe) 

0.2 gph/ 0.1 gph/20,000 gallons 

OPW Fuel Management 

Systems (originally 

listed as Petro Vend, 

Inc.) 

Site Sentinel Models 1, 2 and 3, , iTouch

(Model 924A with 4 inch dia Floats, and 924B with 2 

inch dia or 4 inch dia Floats, Magnetostrictive 

Probes) 

0.2 gph/0.1 gph/20,000 gallons 

0.1 gph/0.053 gph/20,000 gallons 

OPW Fuel Management 

Systems 

Site Sentinel Model iSite

(Model 924B with 2 inch dia or 4 inch dia Floats, 

Magnetostrictive Probes or Q0400-4xx 

Magnetostrictive Probe) 

0.2 gph/0.1 gph/20,000 gallons 

0.1 gph/0.033 gph for 2” float and 0.05 gph for 

4” float/20,000 gallons 

Patriot Sensors and 

Controls Corp. 

(originally listed as 

MagneTek) 

7021 Digital Tank Gauge 

(7030 Series Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

9

Revision Date: May 19, 2009

AUTOMATIC TANK GAUGING METHOD - Continued 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Patriot Sensors and 

Controls Corp. 

(originally listed as 

MagneTek) 

7021 Digital Tank Gauge 

(7100 Series Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 

Phoenix Technologies 

Division of Phoenix 

Group (formerly listed 

as Arizona Instrument 

Corp. and NESCO) 

Encompass MTS IPAM #17-903 

(Magnetostrictive Probe #17-9300) 

0.2 gph/0.1 gph/15,000 gallons 

 Phoenix Technologies 

Division of Phoenix 

Group (formerly listed 

as Arizona Instrument 

Corp. and NESCO) 

Encompass USF IPAM #17-901 

(Ultrasonic Probe #17-9100) 

0.2 gph/0.1 gph/15,000 gallons 

Pneumercator 

Company, Inc. 

TMS 2000, TMS 3000 

(Magnetostricitive Probe) 

0.2 gph/0.1 gph/20,000 gallons 

0.1 gph/0.05 gph/20,000 gallons 

Pneumercator 

Company, Inc. 

TMS 2000, TMS 3000 

(Patriot 7100 Magnetostricitive Probe) 

0.2 gph/0.1 gph/75,000 gallons 

Ronan Engineering Co. X76CTM Series Monitoring System 

(Series 7100 Magnetostrictive Probe, 

 X76MP Series Magnetostrictive Probe) 

0.2 gph/0.1 gph, Precision Test, Series 7100 

Probe/20,000 gallons 

0.2 gph/0.115 gph, Precision Test, X76MP 

Series Probe/20,000 gallons 

0.2 gph/0.115 gph, Quick Test, Series 7100 

Probe/20,000 gallons 

0.2 gph/0.129 gph, Quick Test, X76MP Series 

Probe/20,000 gallons 

0.1 gph/0.05 gph, 0.1gph Test, Series 7100 

Probe /20,000 gallons 

0.1 gph/0.066 gph, 0.1gph Test, X76MP Series 

Probe /20,000 gallons 

Ronan Engineering Co. X76CTM Series Monitoring System 

(MTS UST Series Magnetostrictive Probe) 

 0.2 gph/0.124 gph, Precision Test/20,000 

gallons 

0.2 gph/0.168 gph, Quick Test/20,000 gallons 

0.1 gph/0.067 gph, 0.1gph Test/20,000 gallons 

Ronan Engineering Co. X76CTM Series Monitoring System 

(Veeder-Root 8463/8473/8493 Series 

Magnetostrictive Probe) 

0.2 gph/0.1 gph, Precision Test/20,000 gallons 

0.2 gph/0.128 gph, Quick Test/20,000 gallons 

0.1 gph/0.06 gph, 0.1gph Test/20,000 gallons 

Ronan Engineering Co X-76 ETM, X-76 ETM-4X 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 

Simmons Corp. 

(originally listed as 

Caldwell Systems 

Corp.) 

Simmons/Caldwell Tank Manager 

(Ultrasonic Probe) 

0.2 gph/0.1 gph/ 20,000 gallons 

0.1 gph/0.05 gph/ 20,000 gallons 

Tidel Engineering, Inc. Tidel Environmental Monitoring System, 3500 Series

(Ultrasonic Probes #401-0009, #401-0010, #401-

0023) 

0.2 gph/0.1 gph/15,000 gallons 

Tidel Engineering, Inc. Tidel Environmental Monitoring System, EMS 2000, 

3000, 3500 Series (Ultrasonic Probes #401-0009, 

#401-0010, #401-0021, #401-0022) 

0.2 gph/0.1 gph/15,000 gallons 

Tidel Engineering, Inc. Tidel Environmental Monitoring System, EMS 4000 

(Ultrasonic Probe #312-9000) 

0.2 gph/0.1 gph/15,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 

Tidel Engineering, Inc. Tidel Environmental Monitoring System, EMS 4000 

(Ultrasonic Probe #312-9001) 

0.2 gph/0.1 gph/15,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 

TOPS, Inc. (marketed 

by Westech, Inc.) 

Pnuemercator TMS 2000, TMS 3000 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/20,000 gallons 

0.1 gph/0.05 gph/20,000 gallons 

Universal Sensors and 

Devices, Inc. 

TICS-1000 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

10

Revision Date: August 20, 2009

AUTOMATIC TANK GAUGING METHOD - Continued 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

USTest, Inc. (previously 

listed as Sound 

Products 

Manufacturing, Inc.) 

UST 2001 and UST 2001 Quick Test 

(Ultrasonic Probe) 

0.2 gph (Quick Test)/0.1 gph/15,000 gallons 

0.1 gph/0.05 gph/15,000 gallons 

Varec, Inc. (originally 

listed as Coggins 

Systems, Inc. and later 

as Endress+Hauser 

Systems and Gauging) 

Fuels Manager with Barton 3500 Dual-Pressure 

Transducer ATG 

0.2 gph/0.1 gph/75,000 gallons 

Varec, Inc. Fuels Manager with Enraf 854 ATG 

(Servo Buoyancy Probe) 

0.2 gph/0.1 gph/76,500 gallons 

Varec, Inc. (originally 

listed as Coggins 

Systems, Inc. and later 

as Endress+Hauser 

Systems and Gauging) 

Fuels Manager with MTS Magnetostrictive Probe 0.2 gph/0.13 gph/75,000 gallons 

Veeder-Root 

(originally listed as 

Control Engineers) 

CEI 3000 Tank Level Module - Version TLP2, 

Normal/Rapid Test Mode 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

0.1gph/0.05 gph/15,000 gallons 

Veeder-Root 

(originally listed as 

Marley Pump Co.) 

Prolink System 

RJE Probes # RE-400-094 thru 112-5 

(Magnetostrictive Probe) 

0.2 gph/-0.116 gph to declare a leak/18,000 

gallons 

0.2 gph/0.084 gph to declare a gain/18,000 

gallons 

0.1 gph/-0.065 gph to declare a leak/18,000 

gallons

0.1 gph/0.035 gph to declare a gain/18,000 

gallons 

Veeder-Root 

(originally listed as 

Marley Pump Co.) 

Red Jacket ATM System 

Version RLM 5000, 5001, 9000 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/15,000 gallons 

Veeder-Root 

(originally listed as 

Marley Pump Co.) 

Sonic Technology (ST) 1400-1800 Series Tank 

Monitoring System, ProLink System with Ultrasonic 

Network Card, ATG Automatic Tank Gauging 

Monitor, LLM Series Liquid Level Monitor, FMS Fuel 

Management Monitor (Ultrasonic Probe)

0.2 gph/0.1 gph/73,530 gallons 

0.1 gph/0.05 gph/18,000 gallons 

Veeder-Root TLS-200, 200i, 250i, 300, 300C, 300i, 350, 350PC, 

350R, 350RPC, 350Plus, Red Jacket ProMax and 

ProPlus UST ATGS 

(Model 7842 Digital Sensing Capacitance Probe) 

0.2 gph/0.1 gph/15,000 gallons 

Veeder-Root 

(originally listed as 

Gilbarco Environmental 

Products and later as 

Marconi Commerce 

Systems) 

EMC Environmental Management Console 

EMC Basic Monitoring System Tank Monitors 2, 3, 

2.1, 3.1 

PAO238000XXXX (Same as Veeder-Root Model 

7842) 

(Capacitance Probe) 

0.2 gph/0.1 gph/15,000 gallons 

Veeder-Root TLS-200, 200i, 250i, 300, 300C, 300i, 300PC, 350, 

350PC, 350R, 350RPC, 350Plus, Red Jacket ProMax 

and ProPlus UST ATGS 

(Model 8472 Digital Sensing Capacitance Probe) 

0.2 gph/0.126 gph/15,000 gallons 

0.1 gph/0.071 gph/15,000 gallons 

Veeder-Root 

(originally listed as 

Gilbarco Environmental 

Products and later as 

Marconi Commerce 

Systems) 

EMC Environmental Management Console 

EMC Basic Monitoring System Tank Monitors 2.1,3.1, 

PAO264XXX0000 (Same as Veeder-Root Model 

8472) 

(Capacitance Probe) 

0.2 gph/0.126 gph/15,000 gallons 

0.1 gph/0.071 gph/15,000 gallons 

Veeder-Root TLS-200, 200i, 250, 250i, 300, 300C, 300i, 300PC, 

350, 350PC, 350R, 350RPC, 350Plus, Red Jacket 

ProMax and ProPlus UST ATGS 

(Model 8473 Digital Sensing Magnetostrictive Probe) 

0.2 gph/0.093 gph/15,000 gallons 

0.1 gph/0.071 gph/15,000 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

11

Revision Date: April 8, 2008

AUTOMATIC TANK GAUGING METHOD - Continued 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Veeder-Root 

(originally listed as 

Gilbarco Environmental 

Products and later as 

Marconi Commerce 

Systems) 

EMC Environmental Management Console 

EMC Basic Monitoring System Tank Monitors 2.1, 

3.1, PAO265XXX0000 (Same as Veeder-Root Model 

8473) (Magnetostrictive Probe) 

0.2 gph/0.093 gph/15,000 gallons 

0.1 gph/0.071 gph/15,000 gallons 

Veeder-Root TLS-250, 250i, 300, 300C, 300i, 300PC, 350, 350PC, 

350R, 350RPC, 350Plus, 450 Red Jacket ProMax and 

ProPlus UST ATGS 

(Models 8473, 8493 Magnetostrictive Probes) 

0.2 gph/0.126 gph/15,000 gallons 

0.1 gph/0.071 gph/15,000 gallons 

Veeder-Root TLS 300, 350, 350R, 350Plus, 450, TLS2, Red 

Jacket ProMax and ProPlus 

(Models 8463, 8473, 8493 Magnetostrictive Probes) 

0.2 gph/0.126 gph/20,000 gallons 

0.1 gph/0.071 gph/20,000 gallons 

Veeder-Root 

(originally listed as 

Gilbarco Environmental 

Products and later as 

Marconi Commerce 

Systems) 

EMC/PC Series Monitoring Systems 

PA0265 (Same as Veeder-Root Model 8473) 

PA0300 (Same as Veeder-Root Model 8473) 

(Magnetostrictive Probe) 

0.2 gph/0.126 gph/20,000 gallons 

Veeder-Root TLS 300, 350, 350R, 350Plus, 450, TLS2, Red 

Jacket ProMax and ProPlus 

(Models 8463, 8473, 8493 Magnetostrictive Probes) 

0.2 gph/0.126 gph/30,000 gallons 

World Telemetry, Inc. Data Link ATGS v2.6-h 

(Magnetostrictive Probe) 

0.2 gph/0.1 gph/20,000 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

12

Revision Date: June 14, 2008

BULK UNDERGROUND STORAGE TANK LEAK DETECTION METHOD 

(50,000 gallons or greater) 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX PRODUCT SURFACE AREA 

ASTTest Services, Inc. ASTTest Mass Balance Leak Detection System [(product surface area in ft2 ÷ 5,575 ft2) x 

0.88 gph]/[(product surface area in ft2 ÷ 5,575 

ft2) x 0.44 gph]/13,938 ft2 

Engineering Design 

Group, Inc. 

EDG XLD 2000 Plus (Revision 1.02) Leak Detection 

System (MTS DDA Magnetostrictive Probe) 

 [(product surface area in ft2 ÷ 12,074 ft2) x 

1.92 gph]/[(product surface area in ft2 ÷ 

12,074 ft2) x 0.96 gph]/12,076 ft2 

Engineering Design 

Group, Inc. 

Ronan X-76 CTM Automatic Tank Gauging System 

(MTS Level Plus UST Probe) 

 [(product surface area in ft2 ÷ 564 ft2) x 0.2 

gph]/[( product surface area in ft2 ÷ 564 ft2) x 

0.1 gph]/846 ft2 

Mass Technology Corp. Precision Mass Measurement System 

(24 hour test) 

[(product surface area in ft2 ÷ 1,257 ft2) x 0.1 

gph]/[(product surface area in ft2 ÷ 1,257 ft2) 

x 0.05 gph]/3,143 ft2 

Mass Technology Corp. Precision Mass Measurement System 

(48 hour test) 

[(product surface area in ft2 ÷ 6,082 ft2) x 

0.294 gph]/[(product surface area in ft2 ÷ 

6,082 ft2) x 0.147 gph]/6,082 ft2 

Mass Technology Corp. Precision Mass Measurement System 

(72 hour test) 

[(product surface area in ft2 ÷ 14,200 ft2) x 

0.638 gph]/[(product surface area in ft2 ÷ 

14,200 ft2) x 0.319 gph]/35,500 ft2 

Praxair Services, Inc. 

(originally listed as 

Tracer Research, Corp.) 

Tracer ALD 2000 Automated Tank Tightness Test 0.1 gph/A tank system should not be declared 

tight when tracer chemical or hydrocarbon 

greater than the background level is detected 

outside of the tank./Not limited by capacity. 

Universal Sensors and 

Devices, Inc. 

LTC-1000 

(Mass Buoyancy Probe) 

[(product surface area in ft2 ÷ 14,244 ft2) x 

1.4 gph]/[(product surface area in ft2 ÷ 14,244 

ft2) x 0.7 gph]/35,610 ft2 

Universal Sensors and 

Devices, Inc. 

LTC-2000 

(Differential Pressure Probe) 

[(product surface area in ft2 ÷ 14,244 ft2) x 

3.0 gph]/[(product surface area in ft2 ÷ 14,244 

ft2) x 1.5 gph]/35,610 ft2 

Varec, Inc. (originally 

listed as Coggins 

Systems, Inc. and later 

as Endress+Hauser 

Systems and Gauging) 

Fuels Manager and Remote Terminal Unit RTU/8130 

(MTS Magnetostrictive Probe) 

[(product surface area in ft2 ÷ 616 ft2) x 0.2 

gph]/[(product surface area in ft2 ÷ 616 ft2) x 

0.1 gph]/924 ft2 

Varec, Inc. (originally 

listed as Coggins 

Systems, Inc. and later 

as Endress+Hauser 

Systems and Gauging) 

Fuels Manager with Barton Series 3500 ATG 

(48 hour test) (72 hour test) 

[(product surface area in ft2 ÷ 6,082 ft2) x 2.0 

gph]/[(product surface area in ft2 ÷ 6,082 ft2) 

x 1.0 gph]/15,205 ft2 

Varec, Inc. FuelsManager with Enraf 854 ATG 

(Servo Buoyancy Probe)

[(product surface area in ft2 ÷ 11,786 ft2) x 

3.00 gph]/[(product surface area in ft2 ÷ 

11,786 ft2) x 1.50 gph]/ 11,786 ft2 

Varec, Inc. FuelsManager with MTS M-Series ATG 

(MTS Magnetostrictive Probe)

[(product surface area in ft2 ÷ 11,786 ft2) x 

4.50 gph]/[(product surface area in ft2 ÷ 

11,786 ft2) x 2.25 gph]/ 11,786 ft2 

Vista Research, Inc. 

and Naval Facilities 

Engineering Service 

Center 

LRDP-24 (V1.0.2, V1.0.3) [(product surface area in ft2 ÷ 6,082 ft2) x 2.0 

or 3.0 gph]/[(product surface area in ft2 ÷ 

6,082 ft2) x (2.0 or 3.0 gph - 0.223 

gph)]/15,205 ft2 

Vista Research, Inc. 

and Naval Facilities 

Engineering Service 

Center 

LRDP-48 (V1.0.2, V1.0.3) [(product surface area in ft2 ÷ 6,082 ft2) x 2.0 

or 3.0 gph]/[(product surface area in ft2 ÷ 

6,082 ft2) x (2.0 or 3.0 gph - 0.188 

gph)]/15,205 ft2 

Vista Research, Inc. 

and Naval Facilities 

Engineering Service 

Center 

LRDP-24 (V1.1) [(product surface area in ft2 ÷ 6,082 ft2) x 

0.856 gph]/[(product surface area in ft2 ÷ 

6,082 ft2) x 0.632 gph]/15,205 ft2 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

13

Revision Date: June 14, 2008

BULK UNDERGROUND STORAGE TANK LEAK DETECTION METHOD 

(50,000 gallons or greater) - Continued 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX PRODUCT SURFACE AREA 

Vista Research, Inc. 

and Naval Facilities 

Engineering Service 

Center 

LRDP-48 (V1.1) [(product surface area in ft2 ÷ 6,082 ft2) x 

0.749 gph]/[(product surface area in ft2 ÷ 

6,082 ft2) x 0.563 gph]/15,205 ft2 

ASTTest Services, Inc. ASTTest Mass Balance Leak Detection System [(product surface area in ft2 ÷ 5,575 ft2) x 

0.88 gph]/[(product surface area in ft2 ÷ 5,575 

ft2) x 0.44 gph]/13,938 ft2 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

14

Revision Date: June 8, 2005

CONTINUOUS IN-TANK LEAK DETECTION METHOD (CONTINUAL 

RECONCILIATION) 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Warren Rogers 

Associates, Inc. 

WRA PetroNetwork S3 (Version D) 

Continual Reconciliation System for CITLDS Using 

Multiple ATG System with Magnetostrictive Tank 

Probes for Tanks and Associated Pipelines 

0.2 gph/0.1 gph/100,000 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

15

Revision Date: November 9, 2010

CONTINUOUS IN-TANK LEAK DETECTION METHOD (CONTINUOUS 

AUTOMATIC TANK GAUGING) 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Dresser Wayne Europe TIG 5000 ATG System 

(Q0400-4xx Magnetostrictive Probe) 

0.2 gph/0.1 gph/35,000 gallons 

EBW, Inc. AutoStik II, AutoStik Jr. with SCALD 2.0 

(INCON TSP-LL2 Magnetostrictive Probe) 

Certification for those sold on or after March 1, 2004

0.2 gph/0.1 gph/49,336 gallons 

Franklin Fueling 

Systems 

INCON T1 Series TS-750, TS-1000, TS-1001, TS2000, TS-2001, 

INCON T5 Series TS-5 , TS-608, TS-550, TS-5000, 

Colibri CL6 & TS-CL6 Series with SCALD 2.0

(INCON TSP-LL2 Magnetostrictive Probe) 

0.2 gph/0.1 gph/49,336 gallons 

Hectronic GmbH Hectronic Optilevel Dynamic Leak Detection System, 

Optilevel CITLDS (Capacitance Probe) 

0.2 gph/0.1 gph/11,869 gallons (single tanks), 

23,778 gallons (manifolded tanks) 

OMNTEC Mfg., Inc. OEL 8000 II, K-OEL 8000 II Monitoring System with 

CITLDS 

(MTG - XX Magnetostrictive Probe) 

0.2 gph/0.1 gph/18,000 gallons 

OPW Fuel Management 

Systems (originally 

listed as Emco 

Electronics, Tuthill 

Transfer Systems) 

EECO System 1000,1000EG, 1500, 2000, 3000 and 

Galaxy ATG Systems 

(Q0400-4xx Magnetostrictive Probe or OPW 924/B 

TLM-B Magnetostrictive Probe) 

0.2 gph/0.1 gph/35,000 gallons 

Simmons Corp. 

(originally listed as 

Caldwell Systems 

Corp.) 

Simmons/Caldwell Tank Manager Monitoring 

Systems with CITLDS 

(Ultrasonic Probe) 

0.2 gph/N/A for qualitative methods/18,000 

gallons 

Veeder-Root TLS-300i, 300J, 350, 350R, 

350Plus, 450, Red Jacket ProMax and ProPlus 

Monitoring Systems with CSLD 

(Models 8463, 8473, 8493 Magnetostrictive Probes) 

0.2 gph/0.16 gph(single tanks), 

0.15(manifolded tanks)/38,170 gallons 

Veeder-Root 

(originally listed as 

Gilbarco Environmental 

Products and later as 

Marconi Commerce 

Systems) 

EMC, EMC Basic, EMC Enhanced with CSLD 

PAO265XXXX100 (Same as Veeder-Root Model 

8473) 

PA0300XXXX100 (Same as Veeder-Root Model 8473)

(Magnetostrictive Probe) 

0.2 gph/0.16 gph(single tanks), 

0.15(manifolded tanks)/38,170 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

16

Revision Date: February 10, 2010

CONTINUOUS INTERSTITIAL MONITORING METHOD (LIQUID FILLED) 

VENDOR EQUIPMENT NAME 

OPERATING PRINCIPLE/MAX TANK OR 

MAX PIPELINE LENGTH (Whichever is 

applicable) 

Ameron International Dualoy 3000/LCX and MCX Pipe Monitoring System 

Liquid Filled Interstitial Space 

An applicable liquid is used to fill the Ameron 

Dualoy 3000/LCX and MCX fiberglass doublewall pipe interstice. A reservoir at the high 

point of the system contains a dual-point level 

sensor that will alarm if the liquid level is too 

high or too low./344 feet 

Ameron International Dualoy 3000/LCX and MCX Pipe Monitoring System 

Liquid Filled Pressurized Interstitial Space 

An applicable liquid is used to fill the Ameron 

Dualoy 3000/LCX and MCX fiberglass doublewall pipe interstice, which is pressurized using 

an air compressor or gas bottle. 

A reservoir contains a dual-point level sensor 

that will alarm if the liquid level is too high or 

too low./344 feet 

Containment Solutions, 

Inc. (originally listed as 

Fluid Containment and 

O/C Tanks) 

FCI Liquid Filled Interstitial Monitor 

Tank Model DWT6 with Model FHRB 810 Level 

Sensor 

A Fluid reservoir is attached to the top of the 

tank and is open to the interstice through the 

bottom and is normally filled with a brine 

solution in freeze areas or water in non-freeze 

areas. The reservoir is equipped with a dualpoint level sensor to provide for low level and 

high level alarms./For use with all Containment 

Solution tank sizes. 

Western Fiberglass, 

Inc. 

Co-Flow Hydraulic Interstitial Monitoring System Propylene glycol is used to fill the Western 

Fiberglass, Inc., double-walled/coaxial flexible 

pipeline interstice. Two reservoirs are used to 

contain the liquid, one at each end of the 

system./200 feet 

Western Fiberglass, 

Inc. 

Co-Flow Hydraulic Interstitial Monitoring System 

Propylene Glycol Filled Pressurized Interstitial Space 

Propylene glycol is used to fill the Western 

Fiberglass, Inc., double-walled/coaxial flexible 

pipe interstice. A pressurized cylinder is used 

to maintain pressure in the reservoir./200 feet 

Western Fiberglass, 

Inc. 

Liquid-Filled Reservoir for Double-Wall Sumps 

with Liquid Sensor Models WF-3 and WF-750 

Propylene glycol is used to fill the Western 

Fiberglass double-walled sump or under 

dispenser containment sump interstice./Not 

applicable. 

Xerxes Corp. Xerxes Trucheck Continuous Leak Detection System A Fluid reservoir is attached to the top of the 

tank and is open to the interstice through the 

bottom and is filled with a brine solution. The 

reservoir is equipped with an electronic probe 

to provide for low level and high level 

alarms./For use with all Xerxes tank sizes. 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

17

Revision Date: December 8, 2004

CONTINUOUS INTERSTITIAL LINE MONITORING METHOD 

(PRESSURE/VACUUM) 

VENDOR EQUIPMENT NAME 

LEAK RATE/OPERATING PRINCIPLE/ 

MAX PIPELINE LENGTH 

SGB 

(Sicherungsgeratebau 

GmbH) 

Overpressure Leak Detection System Model DLR-G Not determined /System uses pressurized 

nitrogen gas to continuously maintain an 

overpressure within the interstitial space of 

double-walled piping. 

System is designed to activate a visual and 

acoustic alarm before stored product can 

escape to the environment. 

System is capable of detecting breaches in both 

the inner and outer walls of double-walled 

piping./Not applicable 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

18

Revision Date: May 26, 2006

CONTINUOUS INTERSTITIAL TANK SYSTEM MONITORING METHOD 

(PRESSURE/VACUUM) 

VENDOR EQUIPMENT NAME 

LEAK RATE/OPERATING 

PRINCIPLE/MAX TANK CAPACITY 

Beaudreau Electric, Inc. SytemOne 522T Monitor Not determined /System uses an integral 

vacuum pump to continuously maintain a 

partial vacuum within the interstitial space of 

double-walled tanks and double-walled piping. 

System is designed to activate a visual and 

acoustic alarm, and optional turbine pump 

shutdown before stored product can escape to 

the environment. 

System is capable of detecting breaches in both 

the inner and outer walls of double-walled 

tanks and double-walled piping./Not applicable 

Bell Avon, Inc. VIGILANT Leak Detection System 0.1 gph/System alarms when changes in 

interstitial vacuum exceed a predetermined 

change in slope versus time 

curve./15,000 gallons 

Franklin Fueling 

Systems 

Secondary Containment Monitoring (SCM) 

Incon TS-SCM and EBW AS-SCM 

Not Determined/ System uses vacuum 

generated by the turbine pump to continuously 

maintain a partial vacuum within the interstitial 

space of double-walled tanks and double-walled 

piping. 

System is designed to activate a visual and 

acoustic alarm, and optional turbine pump 

shutdown before stored product can escape to 

the environment. 

System is capable of detecting breaches in both 

the inner and outer walls of double-walled 

tanks and double-walled piping./Volume of 

monitored interstitial space must not exceed 8 

m3

 (2114 gal) for tanks and 10 m3 (2642 gal) 

for piping. 

HT Technologies, Inc. Vakumatik Models V 60, V 70 Ex 0.1 gph/System alarms when liquid enters 

interstitial space and vacuum decreases 

(pressure increases) above 34 millibars./20,000 

gallons 

OPW Fuel Management 

Systems (originally 

listed as Advanced Fuel 

Filtration Systems, Inc.) 

Continuous Vacuum Monitoring System (CVMS) Not determined/System uses vacuum 

generated by the turbine pump to continuously 

maintain a partial vacuum within the interstitial 

space of double-walled tanks and double-walled 

piping. 

System is designed to activate a visual and 

acoustic alarm, and optional turbine pump 

shutdown before stored product can escape to 

the environment, and is capable of detecting 

breaches in both the inner and outer walls of 

double-walled tanks and double-walled 

piping./Not applicable 

SGB 

(Sicherungsgeratebau 

GmbH) 

Vacuum Leak Detection System Models VL 30p, 

VL 350p, and VL 400p 

Not determined /System uses an integral 

vacuum pump to continuously maintain a 

partial vacuum within the interstitial space of a 

double-walled tank or piping. 

System is designed to activate a visual and 

acoustic alarm before stored product can 

escape to the environment. 

System is capable of detecting breaches in both 

the inner and outer walls of double-walled 

tanks or double-walled piping./Not applicable 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

19

Revision Date: January 24, 2008

CONTINUOUS INTERSTITIAL TANK SYSTEM MONITORING METHOD 

(PRESSURE/VACUUM) - Continued 

VENDOR EQUIPMENT NAME 

LEAK RATE/OPERATING 

PRINCIPLE/MAX TANK CAPACITY 

Veeder-Root Secondary Containment Leak Detection (SCLD) 

TLS-350/ProMax/EMC Console with Vacuum Sensors 

857280-100, 200, 30x, or Assembly 332175-001 

Not Determined/ System uses vacuum 

generated by the turbine pump to continuously 

maintain a partial vacuum within the interstitial 

space of double-walled tanks and double-walled 

piping. 

System is designed to activate a visual and 

acoustic alarm, and optional turbine pump 

shutdown before stored product can escape to 

the environment. 

System is capable of detecting breaches in both 

the inner and outer walls of double-walled 

tanks and double-walled piping./Not applicable 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

20

Revision Date: September 29, 2010

CONTINUOUS PRESSURIZED PIPING LEAK DETECTION METHOD 

(CONTINUOUS ELECTRONIC LINE LEAK DETECTION) 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX PIPELINE CAPACITY 

Franklin Fueling 

Systems 

TS-LS500, TS-LS500E Series with SLLD 

(for Rigid and/or Flexible Pipelines)

0.2 gph/0.08 gph/391,250 gallons
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

21

Revision Date: November 3, 2010

INTERSTITIAL DETECTOR (LIQUID-PHASE) 

VENDOR EQUIPMENT NAME OPERATING PRINCIPLE 

Beaudreau Electric, Inc. Model DFR-1 Liquid Level Switch, Model EOS100, 

510 and 516 Discriminating Sensor with Models 500 

and 500C Controllers, Model 522 Remote Monitoring 

System, Model 522T Monitoring System, and ESite 

Monitoring System

float switch (DFR-1), 

refractive index of liquids (Model EOS100), 

polymer strip, hydrocarbon-only (Model 510), 

optical sensor and conductivity (Model 516) 

Cambria Corporation Models EOS80, EOS100, and EOS120 Discriminating 

Sensors with Beaudreau Electric, Inc.’s Models 522 

Remote Monitoring System and Model 522T 

Monitoring System, and Cambria Mark I Monitoring 

System 

Evanescent wave absorption / refractive index 

of liquids 

Containment Solutions, 

Inc. (originally listed as 

Fluid Containment and 

O/C Tanks) 

DDAS 910 Discriminating Sensor for Dry Annular 

Spaces; DCBS 900 Discriminating Sensor for Collars, 

Bulkheads, Sumps 

capacitance change 

Containment Solutions, 

Inc. (originally listed as 

Fluid Containment and 

O/C Tanks) 

FOVF 600B, FOVF 600S Non-Discriminating Sensors 

for High Level Overfill (Brass, Steel); FCBS 700 NonDiscriminating Sensors for Collars, Bulkheads, 

Sumps; FDAS 710 Non-Discriminating Sensor for Dry 

Annular Spaces; FHRB 810 Non-Discriminating 

Sensor for Reservoirs 

float switch 

EBW, Inc. Autistic Sensors LS-5, LS-7, LS-10, LS-15, 

LS-20, LS-35, LS-3A, LS-30A 

float switch 

Franklin Fueling 

Systems (originally 

listed as Beaudreau 

Electric, Inc.) 

Model FFS 404-4 Controller with Models S404 and 

S406 Liquid Level Sensors,

float switch (Model S404), 

refractive index of liquids (Model S406) 

Franklin Fueling 

Systems (originally 

listed as INCON 

Intelligent Controls, 

Inc.) 

Tank Sentinel TS-1000EFI, TS-1001/TS-2001, and 

TS-5xxx Series with TSP-DIS BriteSensor; 

Tank Sentinel TS-1000/TS-2000, TS-1001/TS-2001, 

and TS-5xxx Series withTSP-EIS Standard Sensor; 

Tank Sentinel TS-1000/TS-2000 with TSP-PS Liquid 

Contact Sensor 

opto-electric 

Franklin Fueling 

Systems (originally 

listed as INCON 

Intelligent Controls, 

Inc.) 

Tank Sentinel TS-1000EFI , TS-1001/TS-2001, and 

TS-5xxx Series with TSP-HIS BriteSensor; Tank 

Sentinel TS-1000/TS-2000, TS-1001/TS-2001, and 

TS-5xxx Series with TSP-HLS Standard Sensor, TSPULS, and TSP-UHS Standard Sensors 

magnetic switch 

Franklin Fueling 

Systems 

Tank Sentinel TS-5xxx Series with TSP-DMS 12 and 

24 Inch Discriminating Magnetostrictive Sensors 

Magnetostrictive probe with dual floats 

Gems Sensors, Inc. 

(originally listed as 

Warrick Controls, Inc.) 

DMS-47X-X-X(-X), DMS-57X-X-X(-X) Monitoring 

Panels with 

Models DLP-1-NC, DLP-2-NC, DLP-2-NO Sensors 

float switch 

Gems Sensors, Inc. 

(originally listed as 

Warrick Controls, Inc.) 

Model DFP-25 Sensor product solubility 

OMNTEC Mfg., Inc Controller Models OEL 8000 11, K-OEL 8000 11 with 

Liquid level Sensors BX-L, BX-LS, BX-LWF, 

BX-RES 

optical sensor 

OMNTEC Mfg., Inc Controller Models OEL 8000 11, K-OEL 8000 11 with 

Liquid level Sensors BX-PDS, BX-PDWF, 

BX-PDWS 

optical sensor, conductivity 

OMNTEC Mfg., Inc Controller Models Series LPD, LU, OEL8000 

with Sensors L-LL-R-1, LS-ASC, PDS-ASC, 

PDWS-1, PDWF-1 

refractive index of liquids (all), 

electrical conductivity (PDS-ASC, PDWS-1, 

PDWF -1) 

OPW Fuel Management 

Systems (originally 

listed as Emco 

Electronics, Tuthill 

Transfer Systems) 

EECO System, Leak Sensor II, Leak Sensor Jr. 

Thermistor and Proximity probes 

thermal conductivity, proximity switch 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

22

Revision Date: July 21, 2009

INTERSTITIAL DETECTOR (LIQUID-PHASE) - Continued 

VENDOR EQUIPMENT NAME OPERATING PRINCIPLE 

OPW Fuel Management 

Systems (originally 

listed as Emco 

Electronics, Tuthill 

Transfer Systems) 

EECO 2000, 3000, Leak Sensor II, Leak Sensor Jr. 

Systems Q0001-005 Interstitial Space Flood Sensor, 

and 

EECO 1500, 2000, 3000 Systems 

Q0003-005 Wet Interstitial Sensor 

float switch 

OPW Fuel Management 

Systems (originally 

listed as Emco 

Electronics, Tuthill 

Transfer Systems) 

EECO 1500, 2000, 3000 Systems with 

Q0003-001 Discriminating Dispenser Pan Sensor, 

Q0003-002 Discriminating STP Sump Sensor, 

Q0003-003 Discriminating Interstitial Sensor, 

Q0003-006 Liquid Only Interstitial Sensor, 

Q0003-009 Liquid Float Sensor 

float switch and polymer strip (Q0003-001, 

Q0003-002), 

optical prism and conductivity (Q0003-003), 

optical prism (Q0003-006), 

float switch (Q0003-009) 

OPW Fuel Management 

Systems (originally 

listed as Petro Vend, 

Inc.) 

Petrosentry IV, Petrosentry VIII, SiteSentinel 

Liquid Sensor, Universal Sump Sensor, Universal 

Reservoir Sensor 

thermal conductivity (Liquid Sensor) 

float switch (Universal Sump Sensor, Universal 

Reservoir Sensor) 

PermAlert LiquidWatch Leak Detection System LW64-IS with 

PHLR-LW and PHLR-P-LW Hydrocarbon Probes 

Product permeable, magnetic membrane switch 

PermAlert PAL-AT Models AT20C, AT50C, AT40K with 

PHL Hydrocarbon Sensor 

electrical conductivity 

PermAlert PAL-AT Models AT20C, AT50C, AT20K, AT40K, 

AT80K with PHLR-S/L and PHLR-P-S/L Hydrocarbon 

Probes 

Product permeable, magnetic membrane switch 

PermAlert TankWatch Models PHM10, PHMS with 

Combination Hydrocarbon/Water Probe, 

Hydrocarbon Probe 

electrical conductivity 

Pneumercator 

Company, Inc. 

LC 1000 Series, E-14-29, E-700-1, LDE-700, LDE740, TMS 2000, TMS 3000 with 

Level Sensor Models LS600AB, LS600LDBN, LS610, 

RSU800 

float switch 

Pneumercator 

Company, Inc. 

LDE 700, LDE 740, LDE 9000 with 

Sensor Probe Models 9-901, 9-902, 9-903 

capacitance 

Pneumercator 

Company, Inc. 

TMS 2000, TMS 3000 with 

ES820-100 Non-Discriminating Liquid Sensor, ES820-

200 Discriminating Liquid Sensor 

optical sensor 

Pneumercator 

Company, Inc. 

TMS 2000, TMS 3000 with 

ES825-100(F) Non-Discriminating Liquid Sensor, 

ES825-200(F) Discriminating Liquid Sensor 

optical sensor, electrical conductivity 

Preferred Utilities 

Manufacturing 

Corporation 

TG-EL-D3 Controller with 

HD-A1 Sensor 

optical sensor, electrical conductivity 

Preferred Utilities 

Manufacturing 

Corporation 

PWCN4-CDXRxxx Controller, RBS Non-Discriminating 

Sensors for Sumps and Containments; PS-LDS NonDiscriminating Sensor for Sumps and Containments; 

PLS Non-Discriminating Sensor for Reservoirs

float switch, reed switch 

Robertshaw Industrial 

Products 

Centeron High Level Alarm System (SM Series 

Switch Monitor with Centeron FSL Series Float 

Switches: Models *FSL AAA BB CC DD EE 0 and 

*FSL AAA BB CC DD EE C) 

reed switch 

Ronan Engineering Co. Ronan Controller Models X76S; X76VS; X76LVC; 

TRS76; X76ETM, LVCS; X76CTM-N4; X76ETM-4X; 

X76-4X, -3, -6, -9, -12; X76AST-4X with 

Ronan Sensors LS-3 N.C.; LS-3 N.O.; LS-30; LS-7; 

HVA; LS-3SS; LS-1 

float switch 

S Bravo Systems, Inc. Model B-2000 Shallow Steel Dispenser Containment 

System, Model B-8600 Aboveground/Marina Steel 

Dispenser Containment System 

float switch 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

23

Revision Date: November 13, 2009

INTERSTITIAL DETECTOR (LIQUID-PHASE) - Continued 

VENDOR EQUIPMENT NAME OPERATING PRINCIPLE 

Simmons Corp. 

(originally listed as 

Caldwell Systems 

Corp.) 

Simmons/Caldwell Tank Manager Liquid Sensor, 

Version TMLIQ 

ultrasonic 

Simone Engineering, 

Inc. 

Magnetrol Model 918 Ultrasonic Point Level Switch 

with ABB Automation Freelance 2000 Control System 

electrical conductivity, ultrasonic 

Summit Holdings, Inc. 

– Oklahoma 

Environmental, Inc. 

(originally listed as 

Arizona Instrument 

Corp., then NESCO, 

and then Phoenix 

Technologies Division 

of Phoenix Group) 

Soil Sentry Liquid 330 (17-330-A/17-330-B), TLM830, ENCOMPASS APAM with 

Probes 17-141A, 17-142A, 17-143A, 17-144A 

refraction 

Tidel Engineering, Inc. EMS-3500 

Liquid Discriminatory Probes Part 301-0635, 

Containment Sump Probes Part 301-0642, 

Tidel Detector #301-0752-001 

electrical conductivity/hydrocarbon sensitive 

polymer (part 301-0635) 

magnetic switch/float and hydrocarbon 

sensitive polymer (part 301-0642) 

float switch (#301-0752-001) 

Tyco Thermal Controls 

LLC (originally listed as 

Raychem Corp.) 

TraceTek Alarm and Locator Modules with 

TT502, TT5000, TT3000 Fuel Sensor 

electrical conductivity 

Tyco Thermal Controls 

LLC 

TraceTek Alarm and Locator Modules with 

TT-FFS Fast Fuel Sensor 

electrical conductivity 

Universal Sensors and 

Devices, Inc. 

Leak Alert System 

Models LAL-100, LA-01, LA-02, LA-04, LA-X4, LA-08, 

DLS-01, LS-20, LS-36, LS-70, CATLAS with 

LALS-1 Liquid Sensor 

thermal conductivity 

Veeder-Root 

(originally listed as 

Marley Pump Co.) 

Red Jacket Electronics RE400-058-5, RE400-059-5, 

RE400-147-5, RE400-148-5 Overfill Sensor, RE400 

111-5 Sump Sensor, RE400-203-5 Optical Liquid 

Discrimination Sensor, RE400-204-5 Dispenser Pan 

Monitor, RE400-180-5 Liquid Refraction Sensor 

float switch (RE400-058-5, RE400-059-5, 

RE400-147-5, RE400-148-5, RE400-111-5), 

electrical conductivity and optical 

(RE400-203-5), 

conductive polymer (RE400-204-5), 

optical (RE400-180-5) 

Veeder-Root 

(originally listed as 

Marley Pump Co.) 

Red Jacket Electronics RE400-179-5 to RE400-199-5 

Combination High Level/Low Level Sensor, RE400-

042-5 Hydrostatic Sensor, Red Jacket PPM 4000 

with Optical Liquid Discrimination Sensor 

float switch (RE400-179-5 to RE400-199-5, 

RE400-042-5) 

optical sensor (PPM4000) 

Veeder-Root Dispenser Pan Sensor 847990-001 and 

Differentiating Dispenser Pan Sensor 847990-002 

with Dispenser Control Interface 

product permeable, reed switch/float 

Veeder-Root ILS-250, 350, TLS-250i, 250i Plus, 

300, 300C, 300i, 300PC, TLS-350 Series, 

TLS-450 Series, Red Jacket ProMax and ProPlus with 

Interstitial Liquid Sensor for Fiberglass Tanks 

794390-401, 404, 407, 409 

Interstitial Liquid Sensor for Steel Tanks 

794390-420, 460 

Liquid Sensor for Sumps 0794390-206 

float switch 

Veeder-Root ILS-350, TLS-300C, 300i, 300PC, 350, 350PC, 350R, 

350RPC, TLS-450 Series, Red Jacket ProMax and 

ProPlus with 

Solid-State Pan/Sump Sensor 794380-321, 351, 

Piping Sump Sensor 794380-208, 209, 

Micro Sensor 794380-340 

product permeable, 

ultrasonic/float switch 

Veeder-Root ILS-350, TLS-300 Series, TLS-450 Series, EMC, EMC 

Series, Red Jacket ProPlus with 

Single-Point Mini Hydrostatic Sensor 794380-304 

float switch 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

24

Revision Date: June 20, 2008

INTERSTITIAL DETECTOR (LIQUID-PHASE) - Continued 

VENDOR EQUIPMENT NAME OPERATING PRINCIPLE 

Veeder-Root ILS-350, TLS-300 Series, TLS 350 Series, TLS-450 

Series, EMC Series, EMC Basic, Red Jacket ProMax 

and ProPlus with Position Sensitive Sensor 794380-

323 

float switch 

Veeder-Root TLS-300 Series, TLS-350 Series, TLS-450 Series, 

EMC Series, EMC Basic, Red Jacket ProMax and 

ProPlus with 

Float Sensor 794380-430, 

float switch 

Veeder-Root TLS-300 Series, TLS-350 Series, TLS-450 Series, 

EMC Series, EMC Basic, Red Jacket ProMax and 

ProPlus with 

Single Stage Hydrostatic Sensor 794380-301, 

Dual Stage Hydrostatic Sensors 794380-302, 303 

float switch 

Veeder-Root TLS-300, 300i, TLS-350 Series, TLS-450 Series, Red 

Jacket ProMax and ProPlus with 

Discriminating Dispenser Pan Sensor 794380-322, 

Discriminating Containment Sump Sensor 794380-

352 

product permeable, reed switch/float 

Veeder-Root TLS-350 Series, TLS-450 Series, EMC, EMC-PC, EMC 

Enhanced, EMC-PC Enhanced, and Red Jacket 

ProMax with 

Magnetostrictive Sump Sensor Series 857060-xxx 

and 857080-xxx 

magnetostrictive probe with dual floats 

Veeder-Root TLS-350 Series, TLS-450 Series, Red Jacket ProMax 

With 

Interstitial Liquid Sensor 794380-341, 

Dispenser Pan Sensor 794380-320, 

Discriminating Containment Sump Sensor 794380-

350, 

Discriminating Fibertrench Sensor 794380-360, 361, 

362 

capacitance change/ultrasonic (794380-341) 

electrical conductivity/ultrasonic (794380-320, 

350, 360, 361, 362) 

Veeder-Root TLS-350, 350R Series, TLS-450 Series, Red Jacket 

ProMax with 

Discriminating Interstitial Sensor 794380-343, 

Micro Sensor 794380-344 

optical sensor and conductivity (794380-343) 

optical sensor (794380-344) 

Veeder-Root TLS-350, 350R Series, TLS-450 Series, Red Jacket 

ProMax with 

Interstitial Sensor 794380-345 

optical sensor 

Veeder-Root 

(originally listed as 

Gilbarco Environmental 

Products and later as 

Marconi Commerce 

Systems) 

PA02590XXX000 (Same as Veeder-Root 794390-401, 

404, 407, 409), 

PA02591144000 (Same as Veeder-Root 794390-420, 

460), 

PA02592000010 (Same as Veeder-Root 794380-206) 

float switch 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

25

Revision Date: January 24, 2008

INTERSTITIAL TANK TIGHTNESS TEST METHOD 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Containment Solutions 

Inc. (originally listed as 

Fluid Containment and 

O/C Tanks) 

Hydrostatic Precision Tank Test for DWT-Type II 

Tanks 

0.1 gph/0.05 gph without dispensing/30,000 

gallons 

0.1gph/0.07 gph with dispensing/30,000 

gallons 

Steel Tank Institute Permatank Interstitial Vacuum Monitor Liquid Leaks 0.1 gph/A tank system should not be declared 

tight when the vacuum decreases (pressure 

increases) 5 inches or more of mercury over 

the test period specified for each tank 

size./20,000 gallons 

Steel Tank Institute Permatank Precision Interstitial Vacuum Monitor 0.1 gph/0.01 gph/50,000 gallons 

Xerxes Corp. Xerxes Trucheck Hydrostatic Monitoring System 0.1 gph/0.05 gph/30,000 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

26

Revision Date: November 18, 2010

LARGE DIAMETER LINE LEAK DETECTION METHOD 

(6 inches diameter or above) 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX PIPELINE CAPACITY 

Caldon, Inc. Caldon PF2000 Pipeline Leak Detection System for 

Bulk Pipelines 

10 gph/8 gph/212,000 gallons 

EFA Technologies, Inc. LeakNet 3.0 gph/2.2 gph/116,230 gallons 

HansaConsult 

Ingenieurgesellschaft 

mbH 

HansaConsult Pressure-Step Tightness Control 

System (TCS) Pipeline Leak Detection System 

0.004% of line volume (0.04 gph per 1000 

gallons of product)/0.002% of line volume in 

gph/175,110 gallons 

Hansa Consult of North 

America, LLC (HCNA) 

HCNA Pipeline Leak Detection System, Version 2.0 0.002% of line volume (0.02 gph per 1000 

gallons of product)/0.001% of line volume in 

gph/175,000 gallons 

Praxair Services, Inc. SeeperTraceTM 0.1 gph/A pipeline system should not be 

declared tight when a confirmable level of 

chemical tracer in the sample collected exceeds 

the background level./Not limited by capacity. 

Praxair Services, Inc. 

(originally listed as 

Tracer Research, Corp.) 

Tracer ALD 2000 Automated Line Tightness Test 0.1 gph/A pipeline system should not be 

declared tight when tracer chemical or 

hydrocarbon greater than the background level 

is detected outside of the pipeline./Not limited 

by capacity. 

Vista Research, Inc. Model HT-100 Monitoring Method and Line Tightness 

Test Method, 

Version 1.0, Version 1.1 

0.004% of line capacity (0.04 gph per 1000 

gallons of product) for Version 

1.0 /0.00282% of line volume in gph/612,954 

gallons 

0.00209% of line capacity (0.0209 gph per 

1000 gallons of product) for Version 1.1 

/0.000916% of line volume in gph/612,954 

gallons 

Vista Research, Inc. Model HT-100 Monitoring Method and Line Tightness 

Test Method, 

Version 2.1 

0.00189% of line capacity (0.0189 gph per 

1000 gallons of product)/0.000945% of line 

volume in gph/320,000 gallons 

Vista Research, Inc. Model HT-100-n Monitoring Method and Line 

Tightness Test Method, 

Version 1.0, Version 1.1 

0.004% ÷ √ ̄(n) of line capacity (for n=4, 0.02 

gph per 1000 gallons of product) for Version 

1.0 /0.00282% ÷ √ ̄(n) of line volume in gph; 

where n is the # of tests averaged 

together/612,954 gallons 

0.00209% ÷ √ ̄(n) of line capacity (for n=4, 

0.01045 gph per 1000 gallons of product) for 

Version 1.1 /0.000916% ÷ √ ̄(n) of line volume 

in gph; where n is the # of tests averaged 

together/612,954 gallons 

Vista Research, Inc. Model LT-100 Monthly Monitoring Method and Line 

Tightness Test Method, 

Version 1.0 (Manual Method) 

0.2 gph/0.177 gph/3,400 gallons 

0.1 gph/0.077 gph/3,400 gallons 

Vista Research, Inc. Model LT-100 Monthly Monitoring Method and Line 

Tightness Test Method, 

Version 1.0 (Primary Method) 

0.2 gph/0.148 gph/3,400 gallons 

0.1 gph/0.06 gph/3,400 gallons 

Vista Research, Inc. Model LT-100 Monthly Monitoring Method and Line 

Tightness Test Method, 

Version 1.0 (Segmented Method) 

0.2 gph/0.174 gph/3,400 gallons 

0.1 gph/0.074 gph/3,400 gallons 

Vista Research, Inc. Model LT-100a Monthly Monitoring Method and Line 

Tightness Test Method, 

Version 1.0 

0.2 gph at 50 psi/0.148 gph/3,400 gallons 

0.1 gph at 50 psi/0.06 gph/3,400 gallons 

Vista Research, Inc. Model LT-100a Monthly Monitoring Method and Line 

Tightness Test Method, 

Version 1.0 (Segmented Method) 

0.2 gph at 50 psi/0.174 gph/3,400 gallons 

0.1 gph at 50 psi/0.074 gph/3,400 gallons 

Vista Research, Inc. Model LT-100a Hourly and Monthly Monitoring 

Method and Line Tightness Test Method, 

Version 2.0 (Segmented Method) 

3.0 gph/2.936 gph/3,400 gallons 

0.2 gph/0.136 gph/3,400 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

27

Revision Date: November 23, 2010

LINE TIGHTNESS TEST METHOD 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX PIPELINE CAPACITY 

Estabrook EZY CHEK 

Systems (originally 

listed as Horner EZY 

CHEK) 

EZY-Chek Manual Line Leak Detector 0.1 gph/0.05 gph/426 gallons 

Estabrook EZY CHEK 

Systems (originally 

listed as Horner EZY 

CHEK) 

EZY-Chek Manual Line Leak Detector (for Flexible 

Pipelines) 

0.1 gph/0.05 gph/101 gallons 

Estabrook EZY CHEK 

Systems (originally 

listed as Horner EZY 

CHEK) 

EZY-Chek II Automatic Line Leak Detector 0.1 gph/0.05 gph/129 gallons 

Leighton O’Brien 

Technologies Ltd.

Quantitative Wet Line Test PM2 

(for Rigid and Flexible Pipelines)

0.1 gph/0.05 gph/371.22 gallons (Rigid), 

109.8 gallons (Flexible), 481 gallons 

(combination)

Leighton O’Brien 

Technologies Ltd.

Qualitative Dry Line Test PM2 

(for Rigid and Flexible Pipelines)

0.1 gph/0.05 gph/371.22 gallons (Rigid), 

109.8 gallons (Flexible), 481 gallons 

(combination)

MassTech International 

Ltd. 

ML3P Line Leak Detection System 0.1 gph/0.05 gph/172 gallons 

Praxair Services, Inc. 

(originally listed as 

Tracer Research, Corp.) 

Tracer Tight Line Test 0.1 gph and 0.005gph/A pipeline system should 

not be declared tight when tracer chemical 

greater than the background level is detected 

outside of the pipeline./Not limited by capacity. 

ProTank, Inc. LTH-5000 Line Tester 0.1 gph/0.05 gph/40 gallons 

ProTank, Inc. LTP-5000 Line Tester 0.1 gph/0.05 gph/41 gallons 

Purpora Engineering, 

LLC (originally listed as 

Heath Consultants, 

Inc.) 

Petro Tite Line Tester 0.1 gph/0.05 gph/129 gallons 

Purpora Engineering, 

LLC (originally listed as 

Heath Consultants, 

Inc.) 

Petro Tite Line Tester (for Flexible Pipelines) 0.1 gph/0.05 gph/49.6 gallons 

Tanknology Proline Test Series III, Version 1.0 0.1 gph/0.05 gph/41 gallons 

Tanknology PTK-88 0.1 gph/0.05 gph/40 gallons 

Tanknology TLD-1 0.1 gph/0.05 gph/172 gallons 

Tanknology TLD-1 (Flexible Pipelines) 0.1 gph/0.05 gph/119.4 gallons 

Training and Services 

Corp. (originally listed 

as Hasstech) 

AcuRite 

(for Rigid and Flexible Pipelines) 

0.1 gph/0.01 gph/150 gallons 

Triangle Environmental, 

Inc. 

TEI Model LT-3, Version 1.0 0.1 gph/0.05 gph/80 gallons 

Western Environmental 

Resources 

Model PLT-100R 0.1 gph/0.05 gph/80 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

28

Revision Date: February 24, 2009

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (TRACER) 

VENDOR EQUIPMENT NAME LEAK RATE/THRESHOLD 

MAX TANK CAPACITY 

CGRS, Inc. iota VaporTite - V005 

Enhanced Leak Detection (ELD) Method 

0.005 gph/ A tank system should not be 

declared tight when the change in helium 

concentration in the interstitial space over time 

exceeds the method’s preset threshold./Not 

limited by capacity. 

Leak Detection 

Technologies, LLC 

MDleak Enhanced Leak Detection Method 0.005 gph/ A tank system should not be 

declared tight when chemical marker is 

detected outside of the tank system./Not 

limited by capacity. 

Praxair Services, Inc. 

(originally listed as 

Tracer Research, Corp.) 

Tracer Tight 0.1 gph and 0.005 gph/A tank system should 

not be declared tight when tracer chemical 

greater than the background level is detected 

outside of the tank system./Not limited by 

capacity. 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

29

Revision Date: September 17, 2009

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE) 

VENDOR EQUIPMENT NAME LEAK RATE/THRESHOLD/ 

MAX ULLAGE CAPACITY 

Alert Technologies, Inc. Alert Ullage System Model 1050 

(Pressure and Vacuum Test) 

0.1 gph/A tank system should not be declared 

tight if the ratio of the ultrasonic signal (when 

the tank is under pressure or vacuum) to the 

background signal (prior to pressurization or 

evacuation) equals or exceeds 1.5 for either 12 

kHz or 25 kHz frequency band./6,000 gallons 

Alert Technologies, Inc. Alert Ullage System Model 1050 X 

(Vacuum Test) 

0.1 gph/A tank system should not be declared 

tight if the ratio of the ultrasonic signal (when 

the tank is under vacuum) to the background 

signal (prior to evacuation) equals or exceeds 

1.5 for either 12 kHz or 25 kHz frequency 

band./24,000 gallons 

MassTech International, 

Ltd. 

MassTech Analog Acoustic Vacuum Method 

(Vacuum Test) 

0.1 gph/Tank ullage should not be declared 

tight when the acoustic signal characteristic of 

a leak is detected./20,000 gallons 

MassTech International, 

Ltd. 

MassTech Remote Spectral Analysis Method 

(Vacuum Test) 

0.1 gph/Tank ullage should not be declared 

tight when the digital recording of the noise 

spectrum of tank under vacuum has a 

detectable difference from the digital recording 

of the noise spectrum of tank at zero 

pressure./20,000 gallons 

MassTech International, 

Ltd. 

MassTech 002 Ullage Test System 

(Pressure or Vacuum Test) 

0.1 gph/Tank ullage should not be declared 

tight when a predetermined threshold is 

exceeded. This threshold may be modified by 

the results of the static test./30,000 gallons 

ProTank, Inc. UTA-5000 Ullage Tester 

(Vacuum or Pressure Test) 

0.1 gph/A tank system should not be declared 

tight when the acoustic signal detected is 

different from the baseline. Baseline is the 

acoustic signal before tank is pressurized or 

evacuated./16,500 gallons 

ProTank, Inc. UTF-5000 Ullage Tester 

(Pressure Test) 

0.1 gph/A tank system should not be declared 

tight when the make-up gas flow rate into 

ullage equals or exceeds 0.275 cubic 

feet/hour./7,500 gallons 

ProTank, Inc. UTFP-5000 Ullage Tester 

(Pressure Test) 

0.1 gph/A tank system should not be declared 

tight when the pressure decay trend equals or 

exceeds ± 0.016 psi/hr./10,260 gallons 

Tanknology UST Ullage Test, Version U2 

(Pressure Test) 

0.1 gph/A tank system should not be declared 

tight when the pressure decay trend equals or 

exceeds ± 0.016 psi/hr./10,260 gallons 

Tanknology UTS-4T Ullage Test 

(Pressure Test) 

0.1 gph/A tank system should not be declared 

tight when the make-up gas flow rate into 

ullage equals or exceeds 0.275 cubic 

feet/hour./7,500 gallons 

Tanknology U3 Ullage Test 

(Vacuum or Pressure Test) 

0.1 gph/A tank system should not be declared 

tight when the acoustic signal detected is 

different from the baseline. Baseline is the 

acoustic signal before tank is pressurized or 

evacuated./16,500 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

30

Revision Date: April 4, 2007

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE) - Continued 

VENDOR EQUIPMENT NAME LEAK RATE/THRESHOLD/ 

MAX ULLAGE CAPACITY 

Triangle Environmental, 

Inc. 

TEI Ullage Test, Version 1.0 

(Vacuum Test) 

0.1 gph/A tank system should not be declared 

tight when an increase in the acoustic noise 

level (above background) of the tank under 

vacuum is detected due to air or water 

ingress./15,000 gallons 

USTest, Inc. (previously 

listed as Sound 

Products 

Manufacturing, Inc.) 

UST 2000/U 

(Pressure and Vacuum Test) 

0.1 gph/A tank system should not be declared 

tight when there is a substantial increase in the 

acoustic noise signal (when the tank is under 

pressure or vacuum) above the background 

signal (prior to pressurization or evacuation) in 

the frequency interval of 10 kHz to 20 

kHz/7,550 gallons (pressure test), 5,250 gallons 

(vacuum test). 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

31

Revision Date: September 17, 2009

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (VACUUM) 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Estabrook EZY CHEK 

Systems (originally 

listed as Horner EZY 

CHEK) 

EZY 3 0.1 gph/A tank system should not be declared 

tight when the vacuum decay is more than 1 

inch water column pressure for non-volatile 

products and 10% of the lower determined 

vapor pressure for volatile products, or when 

water ingress is detected by the water 

sensor./50,000 gallons 

Estabrook EZY CHEK 

Systems (originally 

listed as Horner EZY 

CHEK) 

EZY 3 Locator Plus 0.1 gph/A tank system should not be declared 

tight when the acoustic signal detected is 

different from the baseline signal before a 

vacuum is placed on the tank, or when water 

ingress is detected by the water 

sensor./30,000 gallons 

Mesa Engineering Mesa 2-D Method with ACT v1 Water Level Sensor 0.1 gph/A tank system should not be declared 

tight when an acoustic signal is detected above 

the background or baseline noise by a 

computer data acquisition system, or when 

water ingress is detected by the water 

sensor./30,000 gallons 

Protank, Inc. Fast Test 

(Underfill Test) 

0.1 gph/A tank system should not be declared 

tight when the acoustic signal detected is 

different from the baseline. Baseline is the 

acoustic signal before tank is 

evacuated./30,000 gallons 

Tanknology Quick Test 

(Underfill Test) 

0.1 gph/A tank system should not be declared 

tight when the acoustic signal detected is 

different than the baseline. Baseline is the 

acoustic signal before the tank is 

evacuated./30,000 gallons 

Tanknology VacuTect 0.1 gph/A tank system should not be declared 

tight when: 

sonic emission of air ingress is detected in 

ullage area and/or; sonic emission of bubbles 

formed by air ingress is detected in productfilled portion of the tank and/or; water ingress 

is detected at the bottom of the 

tank./75,000 gallons 

Triangle Environmental, 

Inc. 

TEI System 5000, Version 1.0, Version 1.0W 0.1 gph/A tank system should not be declared 

tight when the acoustic noise level of the tank 

under vacuum is greater than the calibrated 

background acoustic noise level (prior to 

evacuation)./20,000 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

32

Revision Date: June 20, 2008 

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE) 

VENDOR EQUIPMENT NAME OPERATING PRINCIPLE 

AT Monitors AMC 5100 or ATI-5100 Monitor with 

Leak Detection Cables: AMC-5007 or ATI-5007

electrical conductivity 

AT Monitors AMC 5100 or ATI-5100 Monitor with 

Cable Sensors: AMC 5016, AMC 5016A, or ATI-5016

electrical conductivity 

Advanced Tank 

Technology, Inc. 

Leak Tracer Dye (LTD) product solubility - color development 

Agar Corp. LEAKWISE Groundwater Monitor 

ID-220 Series Hydrocarbon on Water Detector 

System 

radio frequency (RF) attenuation 

Brooks KWK, Inc. Leak Detection Systems KW-140, KW-240 Monitors 

with Types 1, 2 Sensors 

product soluble 

EBW, Inc. AutoStik Discriminating Sensors LS-5, LS-10, LS-15, 

LS-20, LS-35 

product permeability 

FCI Environmental, Inc. Analog Hydrocarbon Probe AHP-100, 

Digital Hydrocarbon Probe DHP 100 

fiber optic chemical sensor 

Franklin Fueling 

Systems (originally 

listed as INCON 

Intelligent Controls, 

Inc.) 

Tank Sentinel TS-1000EFI, TS-1001/TS-2001, and 

TS-5xxx Series with TSP-DDS BriteSensor, 

TSP-DTS BriteSensor, TSP-MWS BriteSensor 

Groundwater Probe

magnetic switch and float (TSP-DDS 

BriteSensor, TSP-DTS BriteSensor) 

hydrocarbon sensitive polymer (all) 

Gems Sensors, Inc. 

(originally listed as IMO 

Industries, Inc.) 

Gems Smartwell Portable Monitor Model WPM-535 

with Groundwater Probe Model WP-535 

conductive polymer 

Mallory Controls Pollulert Probes MD221G/T, MD221G/TRA, MD241R, 

MD241RRA, MD241G, MD241GRA 

Mallory Controls no longer manufactures, 

services, or supports the use of this method.

electrical conductivity 

One Plus Corp. Leak Edge Models 100-3001, 100-4001 product permeable 

OPW Fuel Management 

Systems (originally 

listed as Petro Vend, 

Inc.) 

SiteSentinel Controller with 

Combination Sensors Part #30-3224 (Consists of 

Part #30-3221-1A, #30-3219-12), #30-3225 

(Consists of Part #30-3221-2, #30-3219-12) 

float switch (part #30-3221-1A, #30-3221-2) 

product permeable (part #30-3219-12) 

OPW Fuel Management 

Systems (originally 

listed as Petro Vend, 

Inc.) 

SiteSentinel Controller with 

Hydrocarbon Sensitive Polymer Cables 

Part #30-3206, #30-3207-nn, #30-3210-nn, 

#30-3219-12 

product permeable 

OPW Fuel Management 

Systems (originally 

listed as Petro Vend, 

Inc.) 

SiteSentinel Controller with 

Optical Sensor Part #30-3223 

optical (part #30-3223) 

OPW Fuel Management 

Systems (originally 

listed as Petro Vend, 

Inc.) 

SiteSentinel Controller with 

Single Float Switches Part #30-3221-1, 

#30-3221-1A, #30-2111-1B 

Brine Reservoir Sensor and Dual Float Sensor Part 

#30-3221-2 

float switch 

PermAlert PAL-AT Models AT20C, AT50C, AT40K with AGW 

Sensor Cable, TFH Hydrocarbon Sensor Cable 

impedance change 

PermAlert PAL-AT Models AT20C, AT50C, AT40K with 

PHFW Hydrocarbon Probe and Type 1 or Type 2 

Sensor 

product soluble 

Tidel Engineering, Inc. EMS-3500 with 

Monitoring Well Probe Part 301-0641, 

Sheen Probes Part 301-0687, 

Tidel Detector #301-0762 

conductivity via resistor ladder network (part 

301-0641) 

electrical conductivity/hydrocarbon sensitive 

polymer (part 301-0687, #301-0762) 

Tidel Engineering, Inc. Tidel Detector #301-0324-001, #301-0325-001, 

#301-0326-001, #301-0326-002 

electrical conductivity 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

33

Revision Date: June 20, 2008 

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE) - Continued 

VENDOR EQUIPMENT NAME OPERATING PRINCIPLE 

Tyco Thermal Controls 

LLC (originally listed as 

Raychem Corp.) 

TraceTek Alarm and Locator Modules with 

TT502, TT5000, TT3000 Fuel Sensing Cable 

electrical conductivity 

Tyco Thermal Controls 

LLC 

TraceTek Alarm and Locator Modules with 

TT-FFS Fast Fuel Sensor 

electrical conductivity 

Veeder-Root 350 Series, TLS-450 Series, Red Jacket ProMax 

UST Monitoring Systems 

Models ILS-350, TLS-350, 350R, 350PC, 350RPC 

with Groundwater Sensors 794380-621, 622, 624 

electrical conductivity 

Veeder-Root (originally 

listed as Gilbarco 

Environmental Products 

and later as Marconi 

Commerce Systems) 

EMC Environmental Management Console 

Groundwater Sensor 

Series PA02700XX0001 (Same as Veeder-Root 

794380-621, 622, 624) 

electrical conductivity 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

34

Revision Date: July 23, 2009

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE) 

VENDOR EQUIPMENT NAME OPERATING PRINCIPLE 

AT Monitors AMC 5100 or ATI-5100 Monitor with 

Vapor Sensors AMC F4000 or ATI-F4000

metal oxide semiconductor 

Chapman Engineering Fuel Finder Version IV adsorption sampling 

FCI Environmental, Inc. Analog Hydrocarbon Probe AHP-100, 

Digital Hydrocarbon Probe DHP-100 

fiber optic 

FDR Services, Inc. GasPak Vapor Monitoring System product permeable detector 

Gems Sensors, Inc. 

(originally listed as 

Warrick Controls, Inc.) 

Model 5700 Meter with PVP-2 Sensor adsistor 

Mallory Controls Pollulert Probes MD221V, MD221VRA, MD210V, 

MD210VRA 

Mallory Controls no longer manufactures, 

services, or supports the use of this method.

adsistor 

Mine Safety Appliances Tankgard, P/N 481532, and 

Tankgard VIII, P/N 488803 

metal oxide semiconductor 

OPW Fuel Management 

Systems (originally 

listed as Emco 

Electronics, Tuthill 

Transfer Systems) 

EECO 1500, 2000, 3000, Leak Sensor, 

Leak Sensor II, Leak Sensor Jr. with 

Q0002-001, Q0002-005 Sensors 

adsistor(Q0002-001), 

metal oxide semiconductor (Q0002-005) 

OPW Fuel Management 

Systems (originally 

listed as Petro Vend, 

Inc.) 

Petrosentry TLD III, SiteSentinel, Smart Module and 

Vapor Sensor 

metal oxide semiconductor 

PID Analyzers, LLC Model 102 Photoionizer photoionization detector 

PID Analyzers, LLC 

(originally listed as HNU 

Systems, Inc.) 

PI-101 with 11.7 EV Probe #101397; HW-101 with 

11.7 EV Probe #170214; ISPI-101 with 10.2 EV 

Probe #111100; DL-101 with 10.2 EV Probe 

#167085 

photoionization detector 

Praxair Services, Inc. 

(originally listed as 

Tracer Research, Corp.) 

Tracer Tight chromatographic (looks for chemical tracer) 

Summit Holdings, Inc. 

– Oklahoma 

Environmental, Inc. 

(originally listed as 

Arizona Instrument 

Corp., then NESCO, 

and then Phoenix 

Technologies Division 

of Phoenix Group) 

Soil Sentry Twelve-X metal oxide semiconductor 

Tidel Engineering, Inc. EMS-3000, 301-0328-001, 301-0330-001, and 

EMS-3500, Vapor Sensor Probe Part No. 301-0634 

adsistor 

Universal Sensors and 

Devices, Inc. 

Leak Alert System 

Models LAV-100, LA-01, LA-02, LA-04, LA-X4, 

LA-08, CATLAS with LAVS-1 MOS Vapor Sensor 

metal oxide semiconductor 

Veeder-Root ILS-350, TLS-350 Series, TLS-450 Series, Red Jacket 

ProMax 

with Adsistor Vapor Probe 794390-700 

adsistor 

Veeder-Root (originally 

listed as Gilbarco 

Environmental Products 

and later as Marconi 

Commerce Systems) 

PA02660000000 

(Same as Veeder-Root 794390-700) 

adsistor 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

35

Revision Date: March 3, 2009

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUALITATIVE) 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Horner Products, Inc. SIR PRO 1, Versions 1.0, 2.0 

Horner Products is no longer in business. 

Support for this method may not be available.

0.2 gph/0.1 gph/18,000 gallons (Version 1.0) 

0.1 gph/0.05 gph/18,000 gallons (Version 2.0) 

Syscorp, Inc. Store Vision, Version E.2 0.2 gph/0.0834 gph/12,000 gallons 

Veeder-Root (originally 

listed as Entropy 

Limited) 

Precision Tank Inventory Control System, Version 90 0.1 gph/0.04 gph/15,000 gallons 

Veeder-Root (originally 

listed as USTMAN 

Industries, Inc.) 

USTMAN YES SIR 90 0.2 gph/0.1 gph/15,000 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

36

Revision Date: November 23, 2010

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE) 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Advanced Telemetrics, 

Ltd. 

Tanknetics SIR, Version 2.1 0.2 gph/0.10 gph/45,000 gallons 

0.1 gph/0.05 gph/45,000 gallons 

Clearstone Engineering 

Ltd.

GreenScan SIR 3.0.1.2 0.2 gph/0.10 gph/30,000 gallons for single 

tanks and 45,000 gallons for manifolded tanks 

0.1 gph/0.05 gph/30,000 gallons for single 

tanks, and 45,000 gallons for manifolded tanks 

Computerizing, Inc. Computank, Version 3.0 0.1 gph/0.05 gph/18,000 gallons 

EviroSIR LLC EnviroSIR Version 1.0 0.2 gph/0.15 gph/45,000 gallons 

0.1 gph/0.05 gph/45,000 gallons 

Horner Products, Inc. SIR PRO 1 Version 3.0 

Horner Products is no longer in business. 

Support for this method may not be available.

0.2 gph/0.1 and 0.16 gph/45,000 gallons 

Horner Products, Inc. SIR PRO 1 Version 4.0 

Horner Products is no longer in business. 

Support for this method may not be available.

0.1 gph/0.05 gph/33,000 gallons 

Leighton O’Brien 

Technologies Ltd. 

Monitor / Redone 0.1 gph/0.05 gph/33,675 gallons for single 

tanks, and 60,000 gallons for manifolded tanks 

Simmons Corp. SIR 5.7 0.1 gph/0.05 gph/18,000 gallons 

Simmons Corp. SIR 5.7 LM 0.2 gph/0.10 gph/60,000 gallons 

0.1 gph/0.05 gph/60,000 gallons 

SIR International, Inc. Mitchell's SIR Program Versions 2.6, 2.7 0.2 gph/0.10 gph/45,000 gallons 

0.1 gph/0.05 gph/45,000 gallons 

SIR Monitor (originally 

listed as Environmental 

Management 

Technologies) 

SIR Monitor 0.1 gph/0.05 gph/18,000 gallons 

Sir Phoenix, Inc. SIR Phoenix 0.1 gph/0.05 gph/18,000 gallons 

Sir Phoenix, Inc. SIR Phoenix LEOMA V01.50 0.2 gph/0.01 gph/18,000 gallons for single 

tanks, and 45,000 gallons for manifolded tanks 

TeleData, Inc. TankMate, Versions 3.12, 3.20 0.1 gph/0.05 gph/60,000 gallons 

TotalSIR TotalSIR, Version 1.0 0.2 gph/0.1 and 0.16 gph/45,000 gallons 

TotalSIR TotalSIR, Version 2.0 0.2 gph/0.10 gph/45,000 gallons 

0.1 gph/0.05 gph/45,000 gallons 

Veeder-Root (originally 

listed as Entropy 

Limited) 

Precision Tank Inventory Control System 

Revision 90 

0.1 gph/0.05 gph/22,500 gallons 

Veeder-Root (originally 

listed as USTMAN 

Industries, Inc.) 

USTMAN SIR 1.91 0.1 gph/0.05 gph/18,000 gallons 

Veeder-Root (originally 

listed as USTMAN 

Industries, Inc.) 

USTMAN SIR, Version 94.1 0.1 gph/0.05 gph/30,000 gallons 

Veeder-Root (originally 

listed as USTMAN 

Industries, Inc.) 

USTMAN SIR, Versions 95.2, 95.2A, 95.2B 0.1 gph/0.05 gph/60,000 gallons (Version 95.2) 

0.2 gph/0.1 gph/60,000 gallons (Version 95.2A) 

0.2 gph/0.16 gph/60,000gallons(Version 95.2B) 

Veeder-Root (originally 

listed as Watson 

Systems, Inc. and later 

as EnviroQuest 

Technologies Limited) 

Watson SIRAS Software System Versions 2.0, 2.8.3 0.2 gph/0.1 gph/30,000 gallons 

0.1 gph/0.05 gph/30,000 gallons 

Warren Rogers 

Associates, Inc. 

WRA Statistical Inventory Analysis, Version 5.1 0.1 gph/0.05 gph/18,000 gallons 

Warren Rogers 

Associates, Inc. 

WRA Statistical Inventory Analysis, Version 5.2 0.1 gph/0.05 gph/36,000 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

37

Revision Date: May 23, 2007

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL) 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Absolute Precision 

Testing Systems 

APT/BKG 1000 0.05 gph/0.02587 gph/6,000 gallons 

Estabrook EZY CHEK 

Systems (originally 

listed as Horner EZY 

CHEK) 

EZY-Chek I 

Estabrook EZY CHEK Systems no longer 

manufactures or supports the use of this 

method.

0.1 gph/0.05 gph/12,000 gallons 

Estabrook EZY CHEK 

Systems (originally 

listed as Horner EZY 

CHEK) 

EZY-Chek II 0.1 gph/0.05 gph/12,000 gallons 

Hasstech Leak Computer Tank Test System 0.1 gph/0.05 gph/12,000 gallons 

Ibex Industries Ibex Precision Test System 0.1 gph/0.05 gph/18,000 gallons 

Leak Detection 

Systems, Inc. 

Tank Auditor, Version RTD V.2.16 0.1 gph/0.05 gph/15,000 gallons 

Purpora Engineering, 

LLC (originally listed as 

Heath Consultants, 

Inc.) 

Petro Comp 0.1 gph/0.05 gph/15,000 gallons 

Purpora Engineering, 

LLC (originally listed as 

Heath Consultants, 

Inc.) 

Petro Tite II 0.1 gph/0.05 gph/15,000 gallons 

Schuster Instruments Tel-A-Leak 1 0.1 gph/0.05 gph/15,000 gallons 

Soiltest, Inc. Soiltest Ainlay Tank 'Tegrity' Tester, S-3 0.1 gph/0.05 gph/15,000 gallons 

Tank Automation, Inc. Automated Precision Tank Testing System 

(APTT System), R-2 

0.1 gph/0.05 gph/15,000 gallons 

Western Environmental 

Resources 

AES System II 0.1 gph/0.05 gph/15,000 gallons 

Western Environmental 

Resources 

AES System II 

(Large Tanks) 

0.1 gph/0.05 gph/75,000 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

38

Revision Date: September 17, 2009

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL) 

VENDOR EQUIPMENT NAME 

LEAK RATE/THRESHOLD/ 

MAX TANK CAPACITY 

Alert Technologies, Inc. Alert Model 1000 0.1 gph/0.05 gph/30,000 gallons 

Estabrook EZY CHEK 

Systems (originally 

listed as Horner EZY 

CHEK) 

EZY-Chek II 

Estabrook EZY CHEK Systems no longer 

manufactures or supports the use of this 

method.

0.1 gph/0.05 gph/12,000 gallons 

Hasstech Leak Computer Tank Test System 0.1 gph/0.05 gph/15,000 gallons 

MassTech International, 

Ltd. 

MassTech 2 Wet Test 

(Mass Based) 

0.1 gph/0.05 gph/30,000 gallons 

ProTank, Inc. VU-5000 Underfill Tester 0.1 gph/0.05 gph/18,000 gallons 

ProTank, Inc. VUP-5000 Underfill Tester 0.1 gph/0.05 gph/18,000 gallons 

Tanknology Computerized VPLT Testing System 0.1 gph/0.05 gph/18,000 gallons 

Tanknology Sure Test - Assured Tight System, Series IV 0.1 gph/0.05 gph/18,000 gallons 

Triangle Environmental, 

Inc. 

TEI System 4000, Version 1.0 0.1 gph/0.05 gph/15,000 gallons 

USTest, Inc. UST 2000/LL 

USTest, Inc. no longer supports the use of this 

method. 

0.1 gph/0.05 gph/15,000 gallons 

USTest, Inc. UST 2000/P 

USTest, Inc. no longer supports the use of this 

method.

0.1 gph/0.05 gph/45,000 gallons 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

39

PART II 

LEAK DETECTION TEST METHODS 

AND EQUIPMENT/SYSTEMS 

ALPHABETICAL BY COMPANY, 

THEN BY TEST METHOD, 

NEXT BY EQUIPMENT MODEL, 

FINALLY BY LEAK RATE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

40

Issue Date: April 18, 1997 

Revision Date: November 14, 1997 

Absolute Precision Testing Systems

APT/BKG 1000

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL)

Certification Leak rate of 0.05 gph with PD = 99.2310% and PFA = 0.5451%.

Leak 

Threshold

0.02587 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 6,000 gallons. Tank must be minimum 100% full.

Waiting Time Minimum of 36 hours between delivery and testing. 

Minimum of 1.5 hours between "topping off" and testing. 

Total minimum waiting time is 36 hours. 

There must be no dispensing or delivery during waiting time.

Test Period Minimum of 1 hour, 48 minutes. 

Volume data is collected and recorded by a computer. 

Leak rate is calculated from 1 minute of test. 

There must be a minimum of 10 tests performed to conclusively declare a tank tight 

or declare a leak. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a resistance temperature sensor.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a 

height difference of 6 feet between product and water level.

Calibration Level sensors must be calibrated before each test. 

Temperature sensor must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Not evaluated using manifolded tank system.

Absolute Precision Testing Systems Evaluator: Dixon Consulting Inc. 

Manufacturer’s Previously Listed Contact Tel: (812) 332-4144 

Information is No Longer Valid. Date of Evaluation: 12/05/95 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

41

Issue Date: November 22, 1995 

Revision Date: April 18, 1997 

Advanced Tank Technology, Inc.

Leak Tracer Dye (LTD)

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

 Detector:

Output type: qualitative 

Sampling frequency: intermittent

Operating principle: product solubility - color development

 

Test Results:

unleaded gasoline synthetic gasoline

Detection time (sec) <1 <1 

Fall time N/A* N/A 

Lower detection limit (cm) <0.32 <0.32 

*See glossary. 

Specificity Results:

Activated: unleaded gasoline (above 23 ppm), synthetic gasoline (above 8 ppm), n-hexane, diesel, jetA fuel, JP-4 jet fuel, toluene, xylene(s). 

Manufacturer’s specifications: 

Leak Tracer Dye develops color in alcohols, ketones, solvents, and PCBs as well as petroleum products. 

Comments: 

Sensors are not reusable, and must be replaced after contact with hydrocarbons. 

Sensor is listed as “intermittent” 

Advanced Tank Technology, Inc. Evaluator: Scientific Information Services 

820 N. Sylvania Tel: Unavailable 

Fort Worth, TX 76111 Date of Evaluation: 02/02/93 

Tel: (800) 526-31446 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

42

Issue Date: March 3, 2000 

Revision Date: March 10, 2000 

Advanced Telemetrics, Ltd.

Model 1100LD Version 1.07

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 98.9% and PFA = 1.1%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation 

with the manufacturer. 

Tank Capacity Maximum of 30,000 gallons. 

Tanks less than 95% full may be tested. 

Minimum product level required is 10 inches. 

Waiting Time Determined automatically based on quality of tank data. 

Average during evaluation was 8 hours, 56 minutes between delivery and testing. 

Dispensing during waiting time may extend waiting time. 

There must be no delivery during waiting time. 

Test Period Determined automatically based on quality of tank data. 

Average during evaluation was 3 hours, 39 minutes. 

Test data are acquired and recorded by a microprocessor. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by probe containing 5 or more IC (solid state) temperature 

sensors. 

At least one IC temperature sensor must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. Minimum detectable water level in the tank is 0.5 inch. 

Minimum detectable change in water level is 0.03 inch. 

Calibration IC (solid state) temperature sensors and probe must be checked and, if necessary, calibrated in 

accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

Evaluated in automatic mode where a test is run whenever conditions in tank are quiet for a 

sufficient amount of time. 

If test is run manually, vendor recommends waiting at least 7 hours after delivery and allowing 

the automatic tank gauge to determine minimum test period to avoid inconclusive results. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

Advanced Telemetrics, Ltd. Evaluator: Ken Wilcox Associates 

PO Box 90413 Tel: (816) 443-2494 

San Antonio TX 78209 Date of Evaluation: 04/03/98 

Tel: (800)-382-1482 

E-Mail: drake@advancedtelemetrics.net 

Website: www.advancedtelemetrics.net 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

43

Issue Date: November 14, 1997 

Revision Date: September 11, 1998 

Advanced Telemetrics, Ltd.

Tanknetics SIR, Version 2.1

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1%. 

Leak rate of 0.1 gph with PD = 99.9% and PFA = 0.5%.

Leak 

Threshold

0.10 gph for leak rate of 0.2 gph. 0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 45,000 gallons for single tanks. 

Maximum of 45,000 gallons cumulative capacity for manifolded tank systems with no 

more than 4 tanks in system.

Data 

Requirement

Minimum of 28 days of product level and throughput data.

Comments 51% of data sets evaluated were from manifolded tank systems. 

Of 41 data sets submitted for evaluation, all were analyzed with conclusive results. 

Median monthly throughput of tanks evaluated was 18,897 gallons. 

Leak rates ranging from 0.043 to 0.234 gph were used in evaluation. Data sets 

evaluated were supplied by evaluator.

Advanced Telemetrics, Ltd Evaluator: Ken Wilcox Associates 

PO Box 90413 Tel: (816) 443-2494 

San Antonio TX 78209 Date of Evaluation: 01/28/97 

Tel: (800)-382-1482 

E-Mail: drake@advancedtelemetrics.net 

Website: www.advancedtelemetrics.net 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

44

Issue Date: November 22, 1995 

Revision Date: December 6, 2002 

Agar Corp.

LEAKWISE Groundwater Monitor 

ID-220 Series Hydrocarbon on Water Detector System

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: radio frequency (RF) attenuation 

Test Results:

unleaded gasoline synthetic gasoline

Detection time (sec) <1 <1 

Fall time (sec) <1 <1 

Lower detection limits (cm) 

 "Standard" setting 0.16 0.32 

 "Sensitive" setting 0.03 0.03 

Specificity Results (in addition to above): 

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s), water. 

Manufacturer’s Specifications: 

Operating Range: 

Resolution: 0.5 mm of hydrocarbon on water or brine 

Variation: groundwater fluctuation of +/- 1 meter standard (larger variations optional) 

Oil thickness: 0.3 - 25 mm optional (higher ranges available) 

Temperature: 0 - 70 degrees C (higher available) 

Comments: 

Sensors are reusable. 

Color coded signal lights indicate the presence of air, water, and hydrocarbon liquid when activated

(yellow, green, and red, respectively). 

Agar Corp. Evaluator: Ken Wilcox Associates 

5150Tacoma Drive Tel: (816) 443-2494 

Houston, TX 77401 Date of Evaluation: 11/15/91 

Tel: (832) 476-5100 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

45

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

Alert Technologies, Inc.

Alert Model 2000 In-Tank Mass Measurement Probe System 

(Mass Buoyancy Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.4% and PFA = 4.6% (calculated based on a 1-hour test). 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids with known coefficients of expansion and density may be tested after consultation 

with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 15 hours between delivery and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Product measurement not required. 

System measures product mass (which is not affected by temperature) instead of product 

volume. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.175 inch (0.27 inch for waste oil). 

Minimum detectable change in water level is 0.088 inch (0.031 inch for waste oil). 

Calibration Mass measurement probe and water sensor must be checked and, if necessary, calibrated in 

accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

System is battery operated and does not automatically generate a hard copy of the leak test 

result. However, a hard copy of the results can be obtained by transfer of data to another unit 

(see manufacturer's instructions for further details). 

System is not equipped with any alarms (e.g. high water alarm, or failed leak test alarm). 

Alert Technologies, Inc. Evaluator: Midwest Research Institute 

636 East 11th Street Tel: (816) 753-7600 

Indianapolis, IN 46202 Date of Evaluation: 03/11/91 

Tel: (317) 631-5580 

E-Mail: randyb@alerttechno.com 

Website: www.alerttechno.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

46

Issue Date: November 22, 1995 

Revision Date: December 6, 2002 

Alert Technologies, Inc.

Alert Ullage System Model 1050 

(Pressure and Vacuum Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

A tank system should not be declared tight if the ratio of the ultrasonic signal (when the tank 

is under pressure or vacuum) to the background signal (prior to pressurization or evacuation) 

equals or exceeds 1.5 for either 12 kHz or 25 kHz frequency band. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Maximum ullage volume is 6,000 gallons. 

Waiting time None between delivery and testing if test is conducted after an underfilled tank tightness 

test. 

Test Period Minimum of 5 minutes. 

Test data are acquired and recorded by system' computer. 

There must be no dispensing or delivery during test. 

Test Pressure Net pressure of 1.5 psi or vacuum of 1.0 psi must be maintained in ullage. 

Pressure or vacuum must be maintained in the tank with a loss of less than 0.4 psi. 

Temperature Ultrasonic and background signals are independent of product temperature. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is present outside ullage, vacuum test in ullage must not be used. 

Pressure test must be conducted using a net pressure of 1.5 psi in the ullage. 

Calibration System must be calibrated before each test. 

Comments Manifolded tank systems must be isolated prior to test. 

Evaluated using unleaded gasoline. 

Tests only ullage portion of tank. 

Product-filled portion of tank must be tested using an underfill test method. 

Vibration due to nearby equipment or dripping condensation may interfere with test. 

Microphone was located 25 feet away from leak source during evaluation. 

Vacuum test method may not be effective in some tank excavation backfill (such as clay) 

because it may plug holes in tank. 

If soil is saturated with product, air or water ingress may not be detected by vacuum test. A 

well point in the tank excavation backfill may help identify presence of this condition. 

Alert Technologies, Inc. Evaluator: Ken Wilcox Associates 

636 East 11th Street Tel: (816) 443-2494 

Indianapolis, IN 46202 Date of Evaluation: 03/15/92 

Tel: (317) 631-5580 

E-Mail: randyb@alerttechno.com 

Website: www.alerttechno.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

47

Issue Date: November 22, 1995 

Revision Date: December 6, 2002 

Alert Technologies, Inc.

Alert Ullage System Model 1050 X 

(Vacuum Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

A tank system should not be declared tight if the ratio of the ultrasonic signal (when 

the tank is under vacuum) to the background signal (prior to evacuation) equals or 

exceeds 1.5 for either 12 kHz or 25 kHz frequency band.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer.

Tank Capacity Maximum ullage volume is 24,000 gallons. 

Waiting time None between delivery and testing if test is conducted after an under filled tank 

tightness test. 

Test Period Minimum of 5 minutes. 

Test data are acquired and recorded by system's computer. 

There must be no dispensing or delivery during test.

Test Pressure Vacuum of 1.5 psi must be maintained in ullage. 

Vacuum must be maintained in the tank with a loss of less than 0.4 psi. 

Zero pressure (background) must produce a flat line response.

Temperature Ultrasonic and background signals are independent of product temperature.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is present outside ullage, test must not be used.

Calibration System must be calibrated before each test.

Comments Manifolded tank systems must be isolated prior to test. Evaluated using #4 fuel oil. 

Tests only ullage portion of tank. 

Product-filled portion of tank must be tested using an underfill test method. 

Vibration due to nearby equipment or dripping condensation may interfere with test. 

Microphone was located 25 feet away from leak source during evaluation. 

Vacuum test method may not be effective in some tank excavation backfill (such as 

clay) because it may plug holes in tank. 

If soil is saturated with product, air or water ingress may not be detected by vacuum 

test. A well point in the tank excavation backfill may help identify presence of this 

condition.

Alert Technologies, Inc. Evaluator: Ken Wilcox Associates 

636 East 11th Street Tel: (816) 443-2494 

Indianapolis, IN 46202 Date of Evaluation: 02/28/94 

Tel: (317) 631-5580 

E-Mail: randyb@alerttechno.com 

Website: www.alerttechno.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

48

Issue Date: November 22, 1995 

Revision Date: November 21, 2002 

Alert Technologies, Inc.

Alert Model 1000

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL)

Certification Leak rate of 0.1 gph with PD = 98.2% and PFA = 1.8% for 2 hour test. 

Leak rate of 0.1 gph with PD = 99.8% and PFA = 0.2% for 4 hour test.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer.

Tank Capacity Maximum of 30,000 gallons. 

Tank must be between 20 and 95% full.

Waiting time Minimum of 1 hour between delivery and testing. 

Minimum of 1 minute between dispensing and testing. 

There must be no delivery during waiting time.

Test Period Minimum of 2 hours to achieve PD = 98.2% and PFA = 1.8%. 

Minimum of 4 hours to achieve PD = 99.8% and PFA = 0.2%. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from the data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test.

Temperature System measures product mass (which is not affected by temperature) instead of 

product volume.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a 

minimum net pressure of 2 psi at bottom of tank during test. 

Calibration Load cell must be calibrated before each test.

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

Alert Technologies, Inc. Evaluator: Ken Wilcox Associates 

636 East 11th Street Tel: (816) 443-2494 

Indianapolis, IN 46202 Date of Evaluation: 02/28/94 

Tel: (317) 631-5580 

E-Mail: randyb@alerttechno.com 

Website: www.alerttechno.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

49

Issue Date: September 19, 2005 

Revision Date: February 10, 2010 

Ameron International 

Dualoy 3000/LCX and MCX Pipe Monitoring System 

Liquid Filled Interstitial Space 

CONTINUOUS INTERSTITIAL MONITORING METHOD (LIQUID FILLED)

Certification: 

Certified as a continuous, liquid-filled interstitial space leak detection system for use only with Ameron Dualoy 3000/LCX and 

MCX fiberglass double-wall pipe. Applicable liquids include water and aqueous solutions of brine (i.e., CaCl and NaCl) or 

glycols (e.g., propylene) in concentration sufficient to reduce evaporation and prevent liquid from freezing in any portion of 

the monitoring system under extremes of local temperature conditions. 

Maximum length is 344 feet. 

No restrictions on pipeline diameter. 

Operating Principle:

Similar to the methodology that has been applied to liquid-filled interstitial double-walled tanks. 

An applicable liquid is used to fill the pipeline interstice. 

A vacuum may be placed on the interstice to assist as applicable liquid is filled from the low point in the pipeline to minimize 

trapped air. 

The reservoir is the high point of the system and is open or vented at the top and contains a dual-point level sensor.

The dual-point level sensor system monitors the liquid level in the interstitial reservoir and provides an alarm if the liquid 

level is either too high (ingress of liquid) or too low (egress of liquid). 

The method must be used with a dual-point sensor system that will properly fit into the reservoir, is compatible with the 

interstitial liquid, and is on the NWGLDE list. The spacing between the high and low sensors must be at least 10 inches. 

Sensors can be used to shut down the turbine system and/or alert the operator that a potential problem exists. 

Alarm Conditions: 

For a leak rate of 0.10 gph in to or out of the interstice, the maximum time to alarm for a 10-inch sensor spacing with a 

reservoir diameter of 3.33 inches is 3.11 hours. 

This method declares a pipeline to be leaking when the loss or gain of applicable liquid in the 3.33 inch reservoir is 0.311 

gallons. 

The change in level in the reservoir is proportional to the volume of fluid flowing into or out of the interstice. It is 

cumulative and therefore not dependent on the rate of fluid gain or loss.

Time to alarm is based on evaluations conducted using a 30% CaCl2 (brine) solution and a leak (liquid egress) 341 feet from 

the reservoir. Equivalent results are expected for other applicable liquids. 

Time to alarm for a catastrophic primary pipe failure with a pressure of 38 psi is 8 seconds at a distance of 2.14 feet from 

the reservoir and 10.48 minutes at a distance of 341 feet. This is based on a liquid level change of 10” or 0.311 gallons in a 

reservoir that measures 12 inches in height and 3.33 inches in diameter.

Calibration: 

Equipment requires no calibration other than an annual inspection. 

The electronics must be calibrated and maintained in accordance with the sensor/monitoring equipment instructions. 

Comments:

System must be designed and installation done in accordance with the instructions provided by the manufacturer. 

Direct burial of pipeline fittings and reservoir is permitted provided the reservoir has an observation manway at grade level. 

The liquid level in the reservoir must be at least 12 inches above the water table. 

The interstice must be filled from the low point in the pipeline to minimize trapped air. 

The evaluation was conducted in an Ameron, double-wall, fiberglass pipeline with an interstitial capacity of 12.97 gallons, an 

inside diameter of 2.22 inches, and a length of 344 feet. 

The alarm conditions are based on a rise or fall of 10 inches of applicable liquid in a reservoir that is 3.33 inches in diameter 

and 12 inches in length. 

Installers must be certified by both the piping and sensor manufacturer. 

Ameron International Evaluator: Texoma Engineering Services, LLC 

1004 Ameron Rd. Tel: (940) 761-2284 

Burkburnett, TX 76354 Dates of Evaluation: 05/12/05, 05/01/07, 11/13/09 

Tel: (940)-569-1471 Evaluator: Ken Wilcox Associates 

E-Mail: marcom@ameronfpd.com Tel: (816) 443-2494 

URL: www.ameronfpd.com Date of Evaluation: 11/08/09 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

50

Issue Date: April 20, 2006 

Revision Date: February 10, 2010 

Ameron International 

Dualoy 3000/LCX and MCX Pipe Monitoring System 

Liquid Filled Pressurized Interstitial Space 

CONTINUOUS INTERSTITIAL MONITORING METHOD (LIQUID FILLED)

Certification: 

Certified as a continuous, liquid-filled interstitial space leak detection system for use only with Ameron 

Dualoy 3000/LCX and MCX fiberglass double-wall pipe. Applicable liquids include water and aqueous 

solutions of brine (i.e., CaCl and NaCl) or glycols (e.g., propylene) in concentration sufficient to reduce 

evaporation and prevent liquid from freezing in any portion of the monitoring system under extremes of 

local temperature conditions. 

Maximum length is 344 feet. 

No restrictions on pipeline diameter. 

Operating Principle:

Similar to the methodology that has been applied to liquid-filled interstitial double-walled tanks. 

An Applicable liquid is used to fill the pipeline interstice, which is pressurized using an air compressor or 

gas bottle. 

High and low level pressure switches are connected to the interstitial space to ensure that pressure 

remains within allowable limits. 

A vacuum may be placed on the interstice to assist as applicable liquid is filled from the low point in the 

pipeline to minimize trapped air. 

The reservoir can be located in any convenient place and does not have to be at the high point of the 

system. 

The dual-point level sensor system monitors the liquid level in the interstitial reservoir and provides an 

alarm if the liquid level is either too high (interstitial pressure is lost, allowing expansion of trapped vapor) 

or too low (loss of interstitial liquid). 

The method must be used with a dual-point sensor system that will properly fit into the reservoir, is 

compatible with the interstitial liquid, and is on the NWGLDE list. The spacing between the high and low 

sensors must be at least 10 inches. 

Sensors can be used to shut down the turbine system and/or alert the operator that a potential problem 

exists. 

Alarm Conditions: 

For a leak rate of 0.10 gph out of the interstice, the maximum time to alarm for a 10-inch sensor spacing 

with a reservoir diameter of 3.33 inches is 3.11 hours. 

This method declares a pipeline to be leaking when the loss of applicable liquid in the 3.33 inch reservoir 

is 0.311 gallons. 

The change in level in the reservoir is proportional to the volume of fluid flowing out of the interstice. It 

is cumulative and therefore not dependent on the rate of fluid loss.

Time to alarm is based on evaluations conducted using a 30% CaCl2 (brine) solution and a leak (liquid 

egress) 341 feet from the reservoir. Equivalent results are expected for other applicable liquids. 

Time to alarm for a catastrophic primary pipe failure with a pressure of 38 psi is 13 seconds at a distance 

of 2.14 feet from the reservoir and 19.76 minutes at a distance of 341 feet. This is based on a liquid level 

change of 10” or 0.311 gallons in a reservoir that measures 12 inches in height and 3.33 inches in 

diameter. 

A high level alarm indicates that the pressure in the interstice has been lost and needs to be restored.

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

51

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Ameron International., Models 404 and 

406 Liquid Level Sensors, Model DFR-1 Liquid Level Switch, Models EOS100, 510 and 516 

Discriminating Sensors with Models 500 and 500C Controllers, Model 522 Remote 

Monitoring System, Model 522T Monitoring System, and ESite Monitoring System 

Calibration: 

Equipment requires no calibration other than an annual inspection. 

The electronics must be calibrated and maintained in accordance with the sensor/monitoring equipment 

instructions.

Comments:

System must be designed and installed in accordance with the instructions provided by the manufacturer. 

Direct burial of pipeline fittings and reservoir is permitted provided the reservoir has an observation 

manway at grade level. 

The interstice must be filled from the low point in the pipeline to minimize trapped air. 

The evaluation was conducted in an Ameron, double-wall, fiberglass pipeline with an interstitial capacity 

of 12.97 gallons, an inside diameter of 2.22 inches, and a length of 344 feet. 

Alarm conditions are based on a fall of 10 inches of applicable liquid in a reservoir that is 3.33 inches in 

diameter and 12 inches in length. 

Installers must be certified by both the piping and sensor manufacturer. 

Evaluation was conducted with an interstitial pressure of 50 psig applied to the pipe and fittings. 

Care must be taken to avoid damaging the piping by applying excessive interstitial pressure. 

The third-party evaluation only addresses the method’s ability to detect leaks. It does not 

test the equipment for safety hazards.

 

Ameron International Evaluator: Texoma Engineering Services, LLC 

1004 Ameron Rd. Tel: (940) 761-2284 

Burkburnett, TX 76354 Dates of Evaluation: 05/12/05, 05/01/07, 11/13/09 

Tel: (940)-569-1471 Evaluator: Ken Wilcox Associates 

E-Mail: marcom@ameronfpd.com Tel: (816) 443-2494 

URL: www.ameronfpd.com Date of Evaluation: 11/08/09 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

52

Issue Date: November 14, 1997 

Revision Date: January 11, 2001

Andover Controls Corp.

Andover Infinity Versions CX9900, CX9400, CX9200, CX9000, CMX240 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.4% and PFA = 4.6%.

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 30,000 gallons. 

Tank must be between 50 and 95% full.

Waiting Time Minimum of 6 hours between delivery and testing. 

Minimum of 3 hours between dispensing and testing. 

There must be no delivery during waiting time.

Test Period Minimum of 6 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated as the average of subsets of all data collected. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a minimum of 3 resistance temperature 

detectors (RTDs).

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.35 inch. 

Minimum detectable change in water level is 0.0028 inch.

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

Andover Controls Corp. Evaluator: Ken Wilcox Associates 

300 Brickstone Square Tel: (816) 443-2494 

Andover, MA 01810 Date of Evaluation: 01/20/97 

Tel: (978) 470-0555 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

53

Issue Date: November 22, 1995 

Revision Date: March 10, 2000

Andover Controls Corp.

Andover Infinity 

Versions CX9000, CX9200, CMX240 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.9% and PFA < 0.1%. 

Leak rate of 0.1 gph with PD = 97.6% and PFA = 2.4%. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 6 hours between delivery and testing. 

Minimum of 3 hours between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 6 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated as the average of subsets of all data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 3 resistance temperature detectors 

(RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.35 inch. 

Minimum detectable change in water level is 0.003 inch. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Andover Controls Corp. Evaluator: Ken Wilcox Associates 

300 Brickstone Square Tel: (816) 443-2494 

Andover, MA 01810 Date of Evaluation: 05/24/93 

Tel: (978) 470-0555 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

54

Issue Date: November 22, 1995 

Revision Date: November 14, 1997

Andover Controls Corp.

Versions AC8+, AC256+ 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.5% and PFA = 0.5%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 6 hours between delivery and testing. 

Minimum of 4 hours between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 6 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated as the difference between first and last data collected, divided by 

elapsed time between first and last volume changes observed. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 3 resistance temperature detectors 

(RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.99 inch. 

Minimum detectable change in water level is 0.01 inch. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Andover Controls Corp. Evaluator: Ken Wilcox Associates 

300 Brickstone Square Tel: (816) 443-2494 

Andover, MA 01810 Date of Evaluation: 02/03/92 

Tel: (978) 470-0555 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

55

Issue Date: August 23, 1999 

ASTTest Services, Inc.

ASTTest Mass Balance Leak Detection System

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate is proportional to product surface area (PSA). 

For tank with PSA of 5,575 ft2, leak rate is 0.88 gph with PD = 95% and PFA = 5%. 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 5,575 ft2) x 0.88 gph]. 

Example: For a tank with PSA = 10,000 ft2; leak rate = [(10,000 ft2 ÷ 5,575 ft2) x 0.88 gph] 

= 1.578 gph. 

Leak rate may not be scaled below 0.2 gph.

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 5,575 ft2, leak threshold is 0.44 gph. 

For other tank sizes, leak threshold equals [(PSA in ft2 ÷ 5,575 ft2) x 0.44 gph]. 

Example: For a tank with PSA = 10,000 ft2; leak threshold = [(10,000 ft2 ÷ 5,575 ft2) x 0.44 

gph] = 0.789 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds the calculated leak threshold. 

Applicability Diesel, aviation fuel, fuel oil, kerosene. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single field-constructed vertical tanks larger than 50,000 gallons. 

Maximum product surface area (PSA) is 13,938 ft2 (approximately 133 ft diameter). 

Performance not sensitive to product level. 

Waiting Time Minimum of 48 hours after delivery or dispensing. 

Valve leaks and pump drain-back may mask a leak. 

Allow sufficient waiting time to minimize these effects. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 48 hours. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 10 thermistors. 

Water Sensor None. 

Water leaks are measured as changes in level inside tank. 

Calibration Level and temperature sensors must be checked regularly and, if necessary, calibrated in 

accordance with manufacturer's instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

Evaluated in a nominal 2,000,000 gallon, vertical aboveground tank with product surface 

area (PSA) of 5,575 ft2. 

Tests conducted in a vertical wall underground tank may achieve better results. 

ASTTest Services, Inc. Evaluator: Albert Machlin, P.E. 

2336 Hamlet Drive Tel: (212) 675-5868 

Melbourne, FL 32934 Date of Evaluation: 11/98 

Tel: (407) 242-1474 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

56

Issue Date: April 18, 1997 

Revision Date: December 26, 2007

AT Monitors 

(originally listed as Armstrong Monitoring, Corp. and then Sequence Controls, Inc.)

AMC 5100 or ATI-5100 Monitor with 

Leak Detection Cables: AMC-5007 or ATI-5007

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: electrical conductivity 

 

Test Results:*

unleaded gasoline

Detection time (sec) 35 

Fall time (min:sec) 02:30 

Lower detection limit (cm) 0.04 

*For tests conducted with 0.32 cm of floating product. 

Manufacturer’s specifications: 

Operating temperature: 32 degrees F to 104 degrees F (0 degrees C to 40 degrees C). 

Comments: 

Sensors are reusable. 

Armstrong Technologies Inc. Evaluator: Environment Canada 

14 Birch Drive Tel: (613) 991-4568 

Kemptville, Ontario K0G 1J0 Canada Date of Evaluation: 12/03/92 

Tel: (613) 258-5225 

E-mail: info@atmonitors.com 

URL www.atmonitors.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

57

Issue Date: November 11, 2004 

Revision Date: December 26, 2007

AT Monitors 

(originally listed as Armstrong Monitoring, Corp. and then Sequence Controls, Inc.)

AMC 5100 or ATI-5100 Monitor with 

Cable Sensors: AMC 5016, AMC 5016A, or ATI-5016

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: electrical conductivity 

 

Test Results:*

AMC-5016 diesel

Detection time (min:sec) 20:15 

Fall time (min:sec) Not Reported 

Lower detection limit (cm) 0.04 

AMC-5016A 

Detection time (min:sec) 9:25 

Fall time (min:sec) Not Reported 

Lower detection limit (cm) 0.04 

*For tests conducted with 0.32 cm of floating product. 

Comments: 

Detection times represent the mean of 5 test periods. 

Manufacturer indicates that the sensor cables will detect the presence of petroleum fuels ranging from 

refined naphtha to heavy crude in bunkers. 

The cables are designed to be reusable after being subjected to a petroleum product. 

If the sensor cable is subjected to trace amounts of diesel fuel, the cable can be removed and dried in 

the open air in a matter of hours. 

If the sensor cables become supersaturated, the manufacturer recommends and provides a procedure 

to wash the cables. 

The washing procedure is included in the AMC-5016 and 5016A manuals for customers that order diesel 

or heavy petroleum product detection systems. 

Armstrong Technologies Inc. Evaluator: Environment Canada 

14 Birch Drive Tel: (613) 991-4568 

Kemptville, Ontario K0G 1J0 Canada Date of Evaluation: 08/27/04 

Tel: (613) 258-5225 

E-mail: info@atmonitors.com 

URL www.atmonitors.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

58

Issue Date: April 18, 1997 

Revision Date: December 26, 2007

AT Monitors 

(originally listed as Armstrong Monitoring, Corp. and then Sequence Controls, Inc.)

AMC 5100 or ATI-5100 Monitor with 

Vapor Sensors AMC F4000 or ATI-F4000

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: metal oxide semiconductor 

Test Results:

benzene

Detection time (sec) 10 

Fall time (min:sec) 04:02 

Lower detection limit (ppm) 300 

Comments: 

Sensors are reusable. 

Armstrong Technologies Inc. Evaluator: Environment Canada 

14 Birch Drive Tel: (613) 991-4568 

Kemptville, Ontario K0G 1J0 Canada Date of Evaluation: 12/03/92 

Tel: (613) 258-5225 

E-mail: info@atmonitors.com 

URL www.atmonitors.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

59

Issue Date: July 2, 2001 

Barton Instrument Systems, LLC

Barton 3500 ATG

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.3% and PFA = 4.7%.

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 75,000 gallons. 

Tank must be between 50 and 95% full.

Waiting Time Minimum of 4 hours between delivery and testing. 

Minimum of 2 hours between dispensing and testing. 

There must be no delivery during waiting time.

Test Period Minimum of 24 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from the average of subsets of all data collected. 

There must be no dispensing or delivery during test.

Temperature Measurement of product temperature is not required by this system.

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.509 inch. 

Minimum detectable change in water level is 0.225 inch.

Calibration Probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

Barton Instrument Systems, LLC Evaluator: Ken Wilcox Associates 

900 S. Turnbull Canyon Road Tel: (816) 443-2494 

City of Industry, CA 91745 Date of Evaluation: 03/15/00 

Tel: (626) 961-2547 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

60

Issue Date: April 18, 1997 

Revision Date: August 18, 2010

Beaudreau Electric, Inc. 

Model DFR-1 Liquid Level Switch, Models EOS100, 510 and 516 Discriminating Sensors with 

Models 500 and 500C Controllers, Model 522 Remote Monitoring System, Model 522T 

Monitoring System, and ESite Monitoring System 

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative, discriminating 

Sampling frequency: continuous 

Operating principle: float switch (Model DFR-1), refractive index of liquids (Model EOS100), polymer strip, hydrocarbononly (Model 510), optical sensor and conductivity (Model 516) 

Test Results:

Model EOS100 Discriminating 

Sensor (5 sensing levels) 

unleaded 

gasoline diesel water brine 

Detection time (sec) <1 <1 <1 

Fall time manual reset manual reset automatic reset 

when water 

level drops 

Precision (in) 

 Level 1 (low level switch) 0.005 0.002 0.003 

 Level 2 0.006 0.002 not evaluated 

 Level 3 0.004 0.002 not evaluated 

 Level 4 0.004 0.002 not evaluated 

 Level 5 (high level switch) 0.004 0.002 0.004 

Lower detection limit (in) 

 Level 1 (low level switch) 0.536 0.551 0.550 

 Level 2 1.266 1.226 not evaluated 

 Level 3 2.097 2.074 not evaluated 

 Level 4 2.858 2.895 not evaluated 

 Level 5 (high level switch) 3.569 3.57 3.596 

Model 510 Discriminating Sensor 

Detection time 5-10 min 1-2 hr <1 sec 

Fall time (sec) Replaceable Replaceable <1 

Precision - standard deviation (in) <0.0001 <0.0001 0.0045 

Lower detection limit (in) 0.058 0.058 11.566 

Model 516 Discriminating Sensor unleaded 

gasoline diesel water brine 

Detection time (sec) <1 <1 <1 

Fall time <1 <1 <1 

Precision - standard deviation (in) 0.0038 0.0032 0.0020 

Lower detection limit (in) 0.340 0.369 0.389 

Model DFR-1 Liquid Level Switch 

Detection time (sec) 

low level switch 

<1 

Reset is 

Automatic 

Reset time (sec) low and high <1 

Detection time (sec) 

high level switch 

<1 

Precision- standard deviation (in) low 

and high level 

0.004 

Mean detection limit (in) 2.657 Low 

11.777 High 

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

61

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Beaudreau Electric, Inc., Model DFR-1 

Liquid Level Switch, Models EOS100, 510 and 516 Discriminating Sensors with Models 500 

and 500C Controllers, Model 522 Remote Monitoring System, Model 522T Monitoring 

System, and ESite Monitoring System 

 

Specificity Results:

Manufacturer and evaluator claim sensors will respond to any liquid. No additional materials tested. 

Manufacturer’s Specifications: 

Manufacturer states that systems require no calibration. 

Annual functional test required. 

Model 510 Discriminating Sensor and Model DFR-1 Liquid Level Switch are designed to work with Beaudreau Models 500, and 

500C Controllers. 

Model 516 Discriminating Sensor is designed to work with Beaudreau Models 500, 500C, and 512 Controllers. 

Model EOS100 Discriminating Sensor is designed to work with Beaudreau Model 522 Remote Monitoring System and Model 522T 

Monitoring System, and ESite Monitoring System. 

Comments: 

Model DFR-1 Liquid Level Switch, and Models EOS100 and 516 Discriminating Sensors are reusable. 

The polymer strip used in Model 510 Discriminating Sensor is designed to be replaceable if desired. This design allows the enduser to immediately reuse the sensor by replacing the polymer strip, instead of having to wait 24 to 48 hours for the polymer strip 

to dry out. Replacement lowers the risk of false alarms caused by the use of partially dried out polymer strips.

Model 516 Discriminating Sensor is designed to be placed in a sensor well in bottom of a containment sump with at least one 

other sensor mounted higher as a high-water cut-off. 

Both Models 510 and 516 Discriminating Sensors were not evaluated for the ability to detect a layer of hydrocarbon on water. 

Model EOS100 has 5 sensing points that can sense fuel or water over a 3.5-inch range. The highest sensor (level 5) acts as a 

high level switch. If water is detected at level 5, a fuel alarm will be triggered instead of a water alarm. If fuel is detected at any 

of the levels, a fuel alarm will be triggered. The output from the system can be used to shut down the turbines when fuel is 

present or when water reaches the high level switch. 

Model 522 Remote Monitoring System: 

Evaluation indicates that when threshold level of Models EOS100, 510 and 516 Discriminating Sensors was reached, Model 522 

Remote Monitoring System produced (1) an audible and visual alarm and (2) an output signal that was recognized by a VeederRoot TLS-350 Monitoring System. 

The TLS-350 Monitoring System produced an alarm within 10 seconds, and displayed and printed a notice of alarm and alarm 

time. 

Manufacturer states that the output signal produced by Model 522 Remote Monitoring System can be recognized by other 

monitoring systems designed to detect this output signal. 

Model 522 Remote Monitoring System was evaluated only using the Veeder-Root TLS-350 Monitoring System. 

Model 522T Monitoring System:

Evaluation indicates that when threshold level of Models EOS100, 510 and 516 Discriminating Sensors was reached, Model 522T 

Monitoring System will generate a visual (LCD readout and LED “alarm” lamp) and audible alarm and also open up to three 

normally closed relay contacts. 

By using a Model 522R Relay, the system can use these normally closed relay contacts to control power to turbine pumps. 

Alternatively, the normally closed relay contacts can be used to send fuel alarm information to a Veeder-Root TLS-350 for both 

positive shutdown and additional alarm notification (such as a printout showing the date and time that a release has occurred).

ESite Monitoring System:

Uses an array of EOS-100 fiber optic discriminating sensors to provide for continuous monitoring of interstitial spaces or sumps. 

Detection of liquid triggers audible and visual alarms on the ESite user interface screen. Alarm information can also be 

transmitted to remote locations through network or internet connections. The ESite Monitoring System provides for turbine pump

and dispenser shutdown via the ESite output controller in the event any amount of fuel is detected, or water level reaches a 

height of 3.5 inches on the sensor.

Beaudreau Electric, Inc. Evaluator: Ken Wilcox Associates 

100 Mechanic Street Tel: (816) 443-2494 

Pawcatuck, CT 06379 Date of Evaluation: 07/20/94 

Tel: (800) 739-4435 (Revised 03/02/01, 09/23/02, 12/23/02, 

E-mail: customerservice@beaudreauelectric.com 08/28/03, 12/01/03, 05/23/05, 05/23/07) 

URL: www.beaudreauelectric.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

62

Issue Date: July 27, 2004 

Revision Date: February 16, 2005

Beaudreau Electric, Inc. 

SystemOne 522T Monitor 

CONTINUOUS INTERSTITIAL TANK SYSTEM MONITORING METHOD (PRESSURE/VACUUM)

Certification: 

Certified as equivalent to European leak detection standard EN 13160-2, Part 2, as a Class I leak detection system. 

Operating Principle:

System uses an integral vacuum pump to continuously maintain a partial vacuum within the interstitial space of double-walled tanks 

and double-walled piping. 

System is designed to activate a visual and acoustic alarm, and optional turbine pump shutdown before stored product can escape

to the environment. 

System is capable of detecting breaches in both the inner and outer walls of double-walled tanks or double-walled piping. 

Alarm Condition: 

System alarms when liquid enters the interstitial space or an air leak occurs where the interstitial vacuum decreases (pressure

increases) to the appropriate “Alarm Activation” vacuum level (see table below). 

Applicability:

Underground double-walled tank, connected double-walled piping, and other connected interstitial spaces where tank and piping 

contain gasoline, gasohol, diesel, heating oil #2, kerosene, aviation fuel, or motor oil. 

Manufacturer’s Specifications: 

The interstitial volume shall not exceed 8 m3

 for tanks and 10 m3 for piping. 

The interstitial space shall be rated for the maximum operating vacuum level of the leak detector as indicated in the following table, 

regardless of temperature and groundwater level fluctuations. 

 Pressure 

Switch 

Number

Alarm Activation 

Vacuum Level

Maximum 

Operating 

Vacuum Level Restrictions

S1-522T-0.9 0.9” Hg (0.44 psi) 6” Hg (2.95 psi) Suction line must be installed at lowest point in the interstitial 

space. 

S1-522T-6 6” Hg (2.95 psi) 12” Hg (5.89 psi) Depth to interstitial space cannot exceed 6 ft unless the suction 

line is installed at lowest point in the interstitial space. 

S1-522T-8 8” Hg (3.93 psi) 14” Hg (6.88 psi) Depth to interstitial space cannot exceed 8 ft unless the suction 

line is installed at lowest point in the interstitial space. 

S1-522T-10 10” Hg (4.91 psi) 18” Hg (8.84 psi) Depth to interstitial space cannot exceed 10 ft unless the 

suction line is installed at lowest point in the interstitial space. 

Calibration: 

Functional and operational safety tests must be performed annually in accordance with manufacturer’s instructions. 

Comments:

Interstitial space is tested continuously. 

System is connected to the interstitial space by a suction line and a pressure measuring line. 

Vacuum is generated by an integral pump, and is measured and controlled by a pressure switch. 

Warning – Damage to the tank and piping may result if the pressure or vacuum generated by this leak detection equipment exceeds the 

UST system manufacturer’s warranty. 

This system may not be compatible with all secondarily contained tanks and/or piping. Always consult with the tank and/or piping 

manufacturer and the manufacturer’s applicable recommended installation practices before installing this system, or damage may be 

caused to the tank or piping by its use. 

Beaudreau Electric, Inc. Evaluator: Ken Wilcox Associates 

100 Mechanic Street Tel: (816) 443-2494 

Pawcatuck, CT 06379 Date of Evaluation: 04/08/04 

Tel: (800) 739-4435 

E-mail: customerservice@beaudreauelectric.com 

URL: www.beaudreauelectric.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

63

Issue Date: April 18, 1997 

Revision Date: February 16, 2005

Bell Avon, Inc.

VIGILANT Leak Detection System

CONTINUOUS INTERSTITIAL TANK SYSTEM MONITORING METHOD (PRESSURE/VACUUM)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

System alarms when changes in interstitial vacuum exceed a predetermined change in 

slope versus time curve.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested which are compatible with flexible liner after consultation 

with the manufacturer.

Tank Capacity Maximum of 15,000 gallons based on interstitial volume resulting when flexible liner is 

properly fitted and held in position against rigid tank wall. 

No minimum product level during test.

Waiting Time Minimum of 20 minutes between delivery and testing.

Test Period Minimum of 40 minutes.

Comments System is located within the interstitial space between a properly fitted and installed 

flexible liner inside a rigid tank. 

Flexible liner is held in position by maintaining a vacuum on interstitial space. 

Interstitial space is tested continuously. 

System allows for permeation of vapor from stored substance into interstitial space. 

Vapor discharged from vacuum pump must meet applicable air quality standards. 

Vapor recovery of product vapor from interstitial space is feasible when required. 

System detects breaches in either flexible internal liner or rigid tank walls. 

This system may not be compatible with all secondarily contained tanks and/or piping. 

Always consult with the tank and/or piping manufacturer and the manufacturer’s 

applicable recommended installation practices before installing this system, or damage 

may be caused to the tank or piping by its use. 

 

Bell Avon, Inc. Evaluator: Ken Wilcox Associates 

1200 Martin Luther King, Jr. Blvd. Tel: (816) 443-2494 

Picayune, MS 39466-5427 Date of Evaluation: 11/16/95 

Tel: (601) 799-1217 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

64

Issue Date: April 18, 1997 

Revision Date: November 14, 1997

Brooks KWK, Inc.

Leak Detection Systems 

KW-140, KW-240 Monitors with Types 1, 2 Sensors

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE) 

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: product soluble 

Test Results:

Type 1 Sensor unleaded gasoline synthetic gasoline

Detection time (sec) 24 9 

Fall time N/A* N/A 

Lower detection limit (cm) 0.01 0.01 

Type 2 Sensor 

Detection time (min:sec) 14:39 08:45 

Fall time N/A N/A 

Lower detection limit (cm) 0.01 0.01 

* See glossary. 

Specificity Results (in addition to above): 

Activated: n-hexane, diesel, jet-A jet fuel, toluene, xylene(s). 

Manufacturer’s specifications:

Type 1 sensor is recommended by manufacturer for detecting liquid and vapor gasoline, alcohol-blend 

fuels, and JP-4 jet fuel in wet or dry monitor wells. 

Type 2 sensor is recommended by manufacturer for detecting fuel oils #1 and #2, A2M, JP-4 jet fuel, 

JP-5 jet fuel, unleaded gasoline, and alcohol blend fuels in wet monitoring wells only. 

Comments: 

Sensors are not reusable, and must be replaced after contact with hydrocarbons. 

Formerly manufactured by In-Situ, Inc. 

Brooks KWK, Inc. Evaluator: Carnegie Mellon Research Institute 

RR 7, Box 141 Tel: (412) 268-3495 

Wellsboro, PA 16901 Date of Evaluation: 07/29/91 

Tel: (717) 724-6448 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

65

Issue Date: August 23, 1999 

Revision Date: December 4, 2002

Caldon, Inc.

Caldon PF2000 Pipeline Leak Detection System for Bulk Pipelines

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above)

Certification Leak rate of 10 gph at 100 psi with PD > 95% and PFA < 5%. 

(EPA defined equivalent 3.0 gph at 10 psi). 

The USEPA has not set a minimum detectable leak rate for large diameter 

pipeline systems (airport hydrant systems) at the time of this evaluation.

Leak 

Threshold

8 gph. 

A pipeline system should not be declared tight if pressure decay or change in rate of 

decay in protected segment indicates a leak that exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests fiberglass or steel piping up to 18 inches diameter. 

Tests are normally conducted at operating pressures of 50 to 150 psi, but system may 

not work at pressures less that 75 psi, and may need to be 100 psi or higher. 

System may be used on pipelines pressurized up to 400 psi

Pipeline 

Capacity

Maximum of 212,000 gallons. 

Evaluation conducted on straight piping runs with capacities to 106,000 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Variable up to 15 minutes.

System 

Features

Permanent installation on pipeline. 

Automatic testing under static conditions. 

Preset thresholds. 

Single test to determine if pipeline is leaking. 

Message display or printout, alarm activation if leak is declared. 

Test data acquisition and calculation by system's computer.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments According to vendor, system works in a complex piping network, can detect leaks 

developed between static test times, and is capable of detecting gradually increasing 

leaks once they reach the system's detection range. However, not all these features 

were demonstrated during this evaluation or other field demonstration testing.

Caldon, Inc. Evaluator: Ken Wilcox Associates 

1070 Banksville Ave. Tel: (816) 443-2494 

Pittsburgh, PA 15216 Date of Evaluation: 10/15/98 

Tel: (412) 341-9920 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

66

Issue Date: February 8, 2010 

Cambria Corporation

Models EOS80, EOS100, and EOS120 Discriminating Sensors 

with Beaudreau Electric, Inc.’s Models 522 Remote Monitoring System and 

Model 522T Monitoring System, and Cambria Mark I Monitoring System

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative, discriminating 

Sampling frequency: continuous 

Operating principle: Evanescent wave absorption / refractive index of liquids 

Test Results:

Model EOS80 

Liquid Level Sensor* 

(single sensing level)

0.05 inch of unleaded

gasoline on water water

Minimum alarm level (inch) <0.01 <0.01 

Maximum level (feet) ≤90 ≤90 

Models EOS100 and EOS120 

Liquid Level Sensors 

(5 sensing levels)

Detection time (sec) <1 <1 

Fall time <1 <1 

Lower detection limit (in) 

 Level 1 (low level switch) 0.562 0.561 

 Level 2 1.235 no data 

 Level 3 2.081 no data 

 Level 4 2.903 no data 

 Level 5 (high level switch) 3.580 3.614 

Specificity Results: 

Manufacturer and evaluator claim sensors will respond to any liquid after its threshold is exceeded.

Testing was specifically conducted for performance in water and water with a thin layer of fuel.

Manufacturer’s Specifications: 

Can be installed on any control device that accepts RS232 communication from the sensor. 

Models EOS100 and EOS120 sensors identify liquid in a range from nominal depth of 0.5 inch to 3.5 

inches at 0.75 inch increments. 

The Model EOS120 sensor is designed to be a drop-in replacement for the Model EOS100 sensor. 

Comments: 

*The position of the Model EOS80 sensor can be adjusted for any depth of liquid required. 

Cambria Corportation Evaluator: Ken Wilcox Associates 

1328 North 128th Street Tel: (816) 443-2494 

Seattle, WA 98133 Date of Evaluation: 09/08/09 

Tel: (206) 782-8330 

E-mail: sales@cambriasensors. 

URL: www.cambriasensors.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

67

Issue Date: November 22, 1995 

Revision Date: April 28, 2005

Campo/Miller, Inc.

LS300, LS300 N/C, LS300-120, LS300-120 XLC, LS300-120 PLUS, LS300-120 PLUS A/S

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 96.2% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol. 

Leak 

Threshold

2.36 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuels, fuel oil #4, waste oil, kerosene. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure.

Pipeline 

Capacity

Maximum of 35.36 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is 10 seconds for LS300, LS300 N/C. 

Response time is 10 seconds, but can be adjusted between 10 seconds and 2 minutes, 

30 seconds depending on the bulk modulus* of the piping system for LS300-120, 

LS300-120 XLC, LS300-120 PLUS, LS300-120 PLUS A/S. 

Test data are acquired and recorded by a microprocessor. 

*See glossary.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset leak threshold. 

Single leak test to determine if pipeline is leaking. 

Pump shutdown, indicator light and alarm activation if leak is declared.

Calibration Manufacturer recommends a weekly self check, activated by the operator, and a full 

functional test every 30 days, estimated to take 5 minutes to perform for LS300, LS300 

N/C, LS300-120, LS300-120 XLC. 

System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions for LS300-120 PLUS, LS300-120 PLUS A/S .

Campo/Miller, Inc. Evaluator: Jetronix Engineering Laboratories 

P. O. Box 1809 Tel: (213) 377-4668 

Porterville, CA 93258 Date of Evaluation: 06/01/91 

Tel: (209) 781-6862 Evaluator: Ken Wilcox Associates 

Tel: (816) 443-2494 

Date of Evaluation: 09/09/94 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

68

Issue Date: October 4, 2007 

Revision Date: February 24, 2009 

CGRS, Inc. 

Iota VaporTite - V005 

Enhanced Leak Detection (ELD) Method

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (TRACER)

Certification Leak rate of 0.005 gph as vapor with PD = 100% and PFA = 0%.

Leak 

Threshold

A tank system should not be declared tight when the change in helium concentration in the interstitial space over 

time exceeds the method’s preset threshold.

Applicability Method tests under pressure the primary containment of secondarily contained tanks, piping and other 

components. 

The primary and secondary components of the system under test must be dry, containing no liquid. 

Tank Capacity Not limited by capacity.

Test Period Minimum 10 minutes for piping and 20 minutes for tanks. 

Test period varies in accordance with iota software and test procedures, and is a function of several factors, 

including interstitial volume, flow rate, diffusion rate, and the concentration of helium in the component being 

tested.

Waiting Time No waiting period is required between adding helium to the primary containment and starting the test.

Dosage Helium dosage varies depending on the component being tested. 

In all cases, 100% industrial helium is used as prescribed in the manufacturer's test procedures.

Sampling 

Points

Sampling is performed by circulating air through the interstitial space between the primary and secondary walls 

of the component(s) being tested and measuring the He levels in the circulated air. 

Groundwater Groundwater level is not determined and does not impact the test. 

Flow meter is used to verify that the interstitial space is dry and has sufficient air movement.

Detector Helium is measured by the helium detector, which supplies data to the iota system for analysis and pass/fail 

determination. 

Third-party evaluation was conducted using the Varian models PHD-04 and 979 detectors, but evaluator indicates 

that any helium detector meeting at least the following performance standards can be used: 

Minimum Detectable Concentration 2 ppm 

Smallest Detectable Leak 5 x 10-6 atm-cc/sec 

Response Time < 2 seconds 

Background Suppression Automatic 

Calibration Helium detector performs an auto calibration on start up and must be checked monthly and, if necessary, 

calibrated in accordance with manufacturer’s instructions.

Comments This method is intended primarily for use on new installations before product has been added to the system. 

The interstitial volume of the components being tested must be entered manually, or the iota software can 

calculate volume based on piping type/length or sump dimensions entered by the tester. 

Third-party evaluation included tests to show that the method can find leaks on a variety of UST system 

components, including double-wall piping, double-wall USTs, and primary components contained within 

tanktop/under dispenser sumps. 

This method is only able to test double-walled tanks that have 2 interstitial access ports on opposite ends of the 

tank and have a dry primary and interstitial space. 

The method was evaluated on a 32 foot long tank with access ports spaced 28 feet apart. 

CGRS, Inc. Evaluator: Ken Wilcox Associates 

1301 Academy Court Tel: (816) 443-2494 

Fort Collins, CO 80524 Date of Evaluation: 07/25/07 

Tel: (800) 288-2657 

E-mail: info@iotaleakdetection.com 

URL: www.iotaleakdetection.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

69

Issue Date: November 22, 1995 

Revision Date: May 7, 2007 

Chapman Engineering 

(originally listed as Environmental Fuel Systems, Inc.)

Fuel Finder IV

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: quantitative 

Sampling frequency: intermittent 

Operating principle: adsorption sampling 

Test Results:

benzene 2-methylbutane

Accuracy (%) [Avg. Reading] 106.8 [1647 ppm] 122.7 [1380 ppm] 

Bias (%) 64.5 38.2 

Precision (%) 22.3 53.2 

Detection time N/A* N/A 

Fall time N/A N/A 

Lower detection limit (ppm) 77 116 

* See glossary. 

Specificity Results:

percentages

Benzene 147.7 

n-butane 90.7 

n-hexane 55.7 

Isobutane 51.1 

2-methylpentane 143.7 

Toluene 66.5 

Chapman Engineering Evaluator: Carnegie Mellon Research Institute 

P.O. Box 1305 Tel: (412) 268-3495 

213 Commerce Street Date of Evaluation: 04/20/93 

Boerne, TX 78066 

Tel: (800) 375-7747 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

70

Issue Date: July 16, 2008

Clearstone Engineering Ltd.

GreenScan SIR 3.0.1.2

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.2 gph with PD > 99% and PFA < 1% for both single and manifolded 

tank systems. 

Leak rate of 0.1 gph with PD > 98% and PFA < 2% for single tank systems. 

Leak rate of 0.1 gph with PD > 99% and PFA < 1% for manifolded tank systems.

Leak 

Threshold

0.10 gph for a leak rate of 0.2 gph 

0.05 gph for a leak rate of 0.1 gph. 

This leak threshold is for evaluation purposes only. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds the leak threshold calculated from the data set. This leak 

threshold may be different than the above leak threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 30,000 gallons for single tank. 

Maximum of 45,000 gallons cumulative capacity for manifolded tank systems with no 

more than 4 tanks in the system.

Data 

Requirement

Minimum of 26 days of data is required.

System 

Features

This system requires a detailed evaluation of daily inventory measurements by a 

trained technician located at the corporate office.

Comments The evaluation showed significant differences in results from manifolded tank systems 

and single tank systems resulting in different PA/PFA when used for leak rates of 0.1 

gph. 

51% of data sets evaluated were from manifolded tank systems. 

Of 41 data sets submitted for evaluation, all were analyzed with conclusive results. 

Median monthly throughput of tanks evaluated was 24,175 gallons. 

Variable leak rates ranging from .047 gph to .233 gph were used in the evaluation. 

Data sets evaluated were supplied by the evaluator. 

Gains (water ingress) are analyzed and evaluated on an individual basis. If found 

significant, an investigation flag will be triggered, indicating an action is required by 

the operator. 

This system is primarily designed as a service provided by the vendor.

Clearstone Engineering, Ltd. Evaluator: Ken Wilcox Associates 

700, 900-6 Avenue S.W. Tel: (816) 443-2494 

Calgary, Alberta, Canada T2P 3K2 Date of Evaluation: 4/14/2003 

Tel: (403) 266-8820 

E-Mail: goran.palibrk@clearstone.ca 

URL: www.greenscan.ca/sir/index.htm 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

71

Issue Date: November 22, 1995 

Revision Date: January 11, 2001

Computerizing, Inc.

Computank, Version 3.0

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.1 gph with PD = 99.5% and PFA = 2%. 

"If a method meets the requirement for detecting a leak rate of 0.1 gph, it will meet 

the requirement for 0.2 gph.", according to "Standard Test Procedures for Evaluating 

Leak Detection Methods: Statistical Inventory Reconciliation Methods", EPA/530/UST90/007, June 1990, Section 7.2.3, page 30.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel. Other more viscous liquids may be tested after consultation with the 

vendor.

Tank Capacity Maximum of 18,000 gallons.

Data 

Requirement

Minimum of 30 days of usable product level and throughput data are required.

Comments Not evaluated using data from manifolded tank systems. 

Of 41 data sets submitted for evaluation, 17 were not analyzed. 

Median monthly throughput of tanks evaluated was 2,340 gallons. 

Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation. 

Data sets evaluated were supplied by evaluator.

Computerizing, Inc. Evaluator: Ken Wilcox Associates 

P.O. Box 99 Tel: (816) 443-2494 

Scottsboro, AL 35768 Date of Evaluation: 09/17/92 

Tel: (256) 259-1805 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

72

Issue Date: August 23, 1999 

Revision Date: November 5, 2007

Containment Solutions, Inc. 

(originally listed as Fluid Containment and O/C Tanks)

FCI Liquid Filled Interstitial Monitor 

Tank Model DWT6 with Model FHRB 810 Level Sensor

CONTINUOUS INTERSTITIAL MONITORING METHOD (LIQUID-PHASE)

Certification: Certified as a continuous, liquid-filled interstitial space leak detection system for all size tanks 

manufactured by Containment Solutions, Inc. at time of evaluation. 

Operating Principle: A fluid reservoir is attached to the top of the tank and is open to the interstice 

through the bottom. The interstice is normally filled with a brine solution in freeze areas or water in nonfreeze areas. The fluid reservoir is equipped with a dual float sensor to provide for low level and high level 

alarms. 

The dual point-level sensor system monitors the liquid level in the interstitial reservoir and provides an alarm 

if the liquid level is either too high (ingress of liquid) or too low (egress of liquid). 

Test Results: 

System is capable of detecting leaks of 0.1 gph or smaller within one month for all size tanks manufactured 

by Containment Solutions, Inc. at time of evaluation. Estimated time to activate alarm, given a leak rate of 

0.1 gph and assuming initial reservoir is 2 inches below full, ranges from 4 hours for a 500 gallon tank to 267 

hours for a 50,000 gallon tank. Minimum detectable leak for alarm within one month ranges from 0.0047gph 

for a 500 gallon tank to 0.0185 gph for a 50,000 gallon tank, if initial reservoir level is 50%. Other test 

results listed below. 

Summary of Variable Ranges Measured in the Evaluation 

Evaluation variable Range of conditions

Estimated range of effect for 

gasoline on brine level (in)

Product level change in tank From 0% to 90% 2.0 

Water table changes 48 inches change 1.6 

Temperature changes From 40 to 100 degrees F. 1.8 

Vapor trapped in interstice 

(with temperature change) 

45 gallons air trapped 

(with temperature change 

from 40 to 100 degrees F.) 

<2 

Manufacturer’s Specifications:

Fluid in reservoir must be filled to proper level. 

When alarm condition exists, or annually, sensor must be removed and tested in a bucket of water, according 

to manufacturer's instructions. 

Comments: 

Evaluation conducted on DWT6 20,000 gallon tank with a R28 reservoir and FHRB 810 sensor. Other sensors 

can be used only if they are a dual-point, will properly fit into the reservoir, are compatible with the interstitial 

liquid, and are on the NWGLDE list. 

Evaluation parameters included: tank product level changes, water table changes, temperature changes, 

measurement of trapped vapor in the interstice, leak effects on the liquid-filled interstice, and scaling factors 

(application to various tank sizes). 

System was not evaluated for ability to detect layer of hydrocarbon on water. 

Containment Solutions, Inc. Evaluator: Ken Wilcox Associates 

5150 Jefferson Chemical Tel: (816) 443-2494 

Conroe, TX 77301-6834 Date of Evaluation: 06/15/98 

Tel: (800) 628-2657 

E-Mail: dheiman@csiproducts.com 

URL: www.containmentsolutions.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

73

Issue Date: January 11, 2001 

Containment Solutions, Inc. 

(originally listed as Fluid Containment and O/C Tanks)

DDAS 910 Discriminating Sensor for Dry Annular Spaces; 

DCBS 900 Discriminating Sensor for Collars, Bulkheads, Sumps

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: capacitance change 

Test Results:

DDAS 910 Discriminating Sensor for 

Dry Annular Spaces unleaded gasoline synthetic gasoline

Accuracy (%) 100 100 

Detection time (sec) <1 <1

Fall time (sec) manual reset manual reset 

Lower detection limit (in) 0.32 0.36 

DCBS 900 Discriminating Sensor for 

Collars, Bulkheads, Sumps

Accuracy (%) 100 100 

Detection time (sec) <1 <1

Fall time (sec) manual reset manual reset 

Lower detection limit (in) 0.76 0.74 

Specificity Results (in addition to above):

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s), water. 

Comments:

Control panel models: 

CPF 1, CPF 2, CPF 3, CPF 4 for liquid level sensors; 

CPI 1D, CPI 1H, CPI 1N inventory control for liquid level sensors and 1 tank; 

CPD 1, CPD 2, CPD 4 for discriminating liquid level sensors; 

CPI 4 inventory control for liquid level sensors and up to 4 tanks; 

BOMC battery operated control cap for liquid level sensors; 

CCF 1DA battery operated control cap for dry annulus monitoring; 

CCF 2 battery operated control cap for hydrostatic reservoir monitoring. 

Containment Solutions, Inc. Evaluator: Ken Wilcox Associates 

5150 Jefferson Chemical Tel: (816) 443-2494 

Conroe, TX 77301-6834 Date of Evaluation: 06/11/99 

Tel: (800) 628-2657 

E-Mail: dheiman@csiproducts.com 

URL: www.containmentsolutions.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

74

Issue Date: January 11, 2001 

Revision Date: December 21, 2010

Containment Solutions, Inc. 

(originally listed as Fluid Containment and O/C Tanks)

FOVF 600B, FOVF 600S Non-Discriminating Sensors for High Level Overfill (Brass, Steel); 

FCBS 700 Non-Discriminating Sensor for Collars, Bulkheads, Sumps; FDAS 710 NonDiscriminating Sensor for Dry Annular Spaces; FHRB 810 Non-Discriminating Sensor for 

Reservoirs

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch 

Test Results:

FOVF 600B, FOVF 600S NonDiscriminating Sensors for High 

Level Overfill (brass, steel) 

unleaded gasoline diesel* water

Lower detection limit (in) 3.32 3.26 3.18 

Precision-standard deviation (in) 0.0051 0.0025 0.0037 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

FCBS 700 Non-Discriminating 

Sensors for Collars, Bulkheads, 

Sumps 

Lower detection limit (in) 0.99 0.97 0.87 

Precision-standard deviation (in) 0.0040 0.0027 0.0043 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

FDAS 710 Non-Discriminating 

Sensors for Dry Annular Spaces 

Lower detection limit (in) 0.44 0.43 0.42 

Precision-standard deviation (in) 0.0025 0.0041 0.0031 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

FHRB 810 Non-Discriminating 

Sensors for Reservoirs - Low Level 

Float

Lower detection limit (in) 2.57 2.53 2.31 

Precision-standard deviation (in) 0.0042 0.111 0.0042 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

FHRB 810 Non-Discriminating 

Sensors for Reservoirs - High Level 

Float 

Lower detection limit (in) 13.31 13.24 13.01 

Precision-standard deviation (in) 0.0080 0.0061 0.0042 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

DATA SHEET CONTINUED ON NEXT PAGE
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

75

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Containment Solutions, Inc., FOVF 600B, 

FOVF 600S Non-Discriminating Sensors for High Level Overfill (Brass, Steel); FCBS 700 

Non-Discriminating Sensor for Collars, Bulkheads, Sumps; FDAS 710 Non-Discriminating 

Sensor for Dry Annular Spaces; FHRB 810 Non-Discriminating Sensor for Reservoirs 

*This evaluation determined the sensors’ responses to the liqiuids shown above. Biodiesel blends B6-

B20 meeting ASTM D7647 and biodiesel B100 meeting ASTM D6751 would also produce an alarm if the 

sensor threshold is exceeded. Responses to these fuels were not determined, but would be expected 

to be very similar to the diesel responses.

Comments: 

Control panel models: 

CPF 1, CPF 2, CPF 3, CPF 4 for liquid level sensors; 

CPI 1D, CPI 1H, CPI 1N inventory control for liquid level sensors and 1 tank; 

CPD 1, CPD 2, CPD 4 for discriminating liquid level sensors; 

CPI 4 inventory control for liquid level sensors and up to 4 tanks; 

BOMC battery operated control cap for liquid level sensors; 

CCF 1DA battery operated control cap for dry annulus monitoring; 

CCF 2 battery operated control cap for hydrostatic reservoir monitoring.

Containment Solutions, Inc. Evaluator: Ken Wilcox Associates 

5150 Jefferson Chemical Tel: (816) 443-2494 

Conroe, TX 77301-6834 Date of Evaluation: 06/11/99 

Tel: (800) 628-2657 

E-Mail: dheiman@csiproducts.com 

URL: www.containmentsolutions.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

76

Issue Date: November 22, 1995 

Revision Date: October 5, 2010 

Containment Solutions, Inc. 

(originally listed as Fluid Containment and O/C Tanks)

Hydrostatic Precision Tank Test for DWT-Type II Tanks

INTERSTITIAL TANK TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 99.9% and PFA = 1.2% without dispensing. 

Leak rate of 0.1 gph with PD = 95% and PFA = 5.0% with dispensing.

Leak 

Threshold

0.05 gph without dispensing and 0.07 gph with dispensing. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, motor oil, biodiesel blends B6-B20 meeting 

ASTM D7647, biodiesel B100 meeting ASTM D6751*. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

*NWGLDE Listings apply to leak detection functionality only and not material 

compatibility – see “Disclaimer” on page ii.

Tank Capacity Maximum of 30,000 gallons. 

Tank must be between 0 and 100% full. Maximum tank diameter is 10 feet.

Waiting Time Minimum of 24 hours between delivery and testing. 

Minimum of 3 hours between "topping off" the annular space with liquid and testing. 

There must be no delivery during waiting time.

Test Period Minimum of 4 hours. 

A leak is not declared unless the threshold is exceeded in two tests, separated by at 

least 8 hours which are performed without dispensing and with minimal changes in 

groundwater elevation above bottom of tank as described below.

Other 

Limitations

Volume of trapped vapor must not exceed 20 gallons. 

Change in barometric pressure must be less than 0.04 psia over the 4-hour test 

period. 

Annular space must be at least 100% full with either water or antifreeze. 

If groundwater is above bottom of tank, and no product is being dispensed during test, 

total change in groundwater elevation during test must be less than 1.5 inches per 

hour. 

If groundwater is below bottom of tank or not changing during test, total change in 

product level during test must be less than 0.75 inch per hour.

Containment Solutions, Inc. Evaluator: Vista Research 

5150 Jefferson Chemical Tel: (415) 966-1171 

Conroe, TX 77301-6834 Date of Evaluation: 05/15/91 

Tel: (800) 628-2657 

E-Mail: dheiman@csiproducts.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

77

URL: www.containmentsolutions.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

78

Issue Date: July 14, 2003

Dresser Wayne Europe

TIG 5000 0.2 gph Precision Test and Quick Test 

(Q0400-4xx Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.1% and PFA = 0.9% for Precision Test. 

Leak rate of 0.2 gph with PD = 95.4% and PFA = 4.6% for Quick Test. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 15,000 gallons. Tanks less than 95% full may be tested. Minimum product level required 

based on tank diameter as follows: 

48" dia/min 8.5"; 

64" dia/min 10.5"; 

72" dia/min 11.5"; 

96" dia/min 14"; 

126" dia/min 18". 

For other tank diameters, see evaluation report. 

Waiting Time Between delivery and testing ranges from 1 to 6 hours depending on tank conditions. 

None between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Average of 2 hours, 46 minutes during Precision Test evaluation. 

Average of 1 hour, 9 minutes during Quick Test evaluation. 

Test data are acquired and recorded by a microprocessor which automatically determines test time based 

on tank size and product level. 

There must be no dispensing or delivery during test. 

Temperature Probe contains 5 resistance temperature detectors (RTDs) to monitor average product temperature. 

At least one RTD must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.66 inches. 

Minimum detectable change in water level is 0.039 inches. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is 

a probe used in each tank and the siphon is broken during testing. 

Tests only the portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank which routinely contains product. 

Dresser Wayne AB Evaluator: Ken Wilcox Associates 

Limhamnsvagen 109, Box 30049 Tel: (816) 443-2494 

SE-200 61 Malmo, Sweden Dates of Evaluation: 12/23/93, 06/20/94 

Tel: Unavailable 08/17/95, 07/28/97, 11/17/99 
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performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

79

Issue Date: July 14, 2003

Dresser Wayne Europe

TIG 5000 0.1 gph Precision Test and Quick Test 

(Q0400-4xx Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD 

Certification Leak rate of 0.1 gph with PD = 99% and PFA = 1% for Precision Test. 

Leak rate of 0.1 gph with PD = 96% and PFA = 4% for Quick Test. 

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain which equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 15,000 gallons. Tanks less than 95% full may be tested. Minimum product level required based on 

tank diameter as follows: 

48" dia/min 8.5"; 

64" dia/min 10.5"; 

72" dia/min 11.5"; 

96" dia/min 14"; 

126" dia/min 18". 

For other tank diameters, see evaluation report. 

Waiting Time Minimum of 6 hours between delivery and testing. 

None between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 3 hours, 45 minutes for Precision Test. 

Average of 3 hours 45 minutes at 95% full and 5 hours 58 minutes at 50% full during Precision Test evaluation. 

Minimum of 1 hour, 49 minutes for Quick Test. 

Average of 1 hour 48 minutes at 95% full and 2 hours 48 minutes at 50% full during Quick Test evaluation. 

Test data are acquired and recorded by a microprocessor which automatically determines test time based on 

tank size and product level. 

There must be no dispensing or delivery during test. 

Temperature Probe contains 5 resistance temperature detectors (RTDs) to monitor average product temperature. 

At least one RTD must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.66 inches. 

Minimum detectable change in water level is 0.039 inches. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only the portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank which routinely contains product. 

Dresser Wayne AB Evaluator: Midwest Research Institute 

Limhamnsvagen 109, Box 30049 Tel: (816) 753-7600 

SE-200 61 Malmo, Sweden Dates of Evaluation: 02/08/94, 09/19/97 

Tel: Unavailable 01/04/00 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

80

Issue Date: July 14, 2003

Dresser Wayne Europe

TIG 1000 

(Model 924, 2 inch dia Floats, Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 97.8% and PFA = 2.2% for 30 minute test. 

Leak rate of 0.2 gph with PD = 99.4% and PFA = 0.6% for 1 hour test. 

Leak rate of 0.2 gph with PD = 99.7% and PFA = 0.3% for 2 hour test. 

Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1% for 3 hour test. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 20,000 gallons. 

Tank must be minimum 50% full for 1 hour test. 

Tank must be minimum 14% full for 30 minute, 2 hour and 3 hour test. 

Minimum product level required based on 14% full tank and tank diameter is as follows: 

48" dia/min 9.5"; 

120" dia/min 24.7". 

For other tank diameters, consult manufacturer. 

Waiting Time Minimum of 8 hours between delivery and testing. 

There must be no delivery during waiting time. 

Minimum of 30 minutes between dispensing and testing. 

Test Period Variable: 

Minimum of 30 minutes, 1, 2 or 3 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated as the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a probe containing 5 thermistors with the lowest thermistor located at the 

10% tank volume level above the bottom of the tank. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.75 inch. 

Minimum detectable change in water level is 0.08 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains product. 

Dresser Wayne AB Evaluator: Ken Wilcox Associates 

Limhamnsvagen 109, Box 30049 Tel: (816) 443-2494 

SE-200 61 Malmo, Sweden Date of Evaluation: 11/06/00 

Tel: Unavailable 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

81

Issue Date: July 14, 2003

Dresser Wayne Europe

TIG 1000 

(Model 924, 4 inch dia Floats, Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 97.8% and PFA = 2.2% for 30 minute test. 

Leak rate of 0.2 gph with PD = 98.7% and PFA = 1.3% for 1 hour test. 

Leak rate of 0.2 gph with PD = 99.2% and PFA = 0.8% for 2 hour test. 

Leak rate of 0.2 gph with PD = 99.5% and PFA = 0.5% for 3 hour test. 

Leak rate of 0.1 gph with PD = 96.9% and PFA = 1.9% for 2 hour test. 

Leak rate of 0.1 gph with PD = 98.2% and PFA = 1.0% for 3 hour test. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.053 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel. Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 20,000 gallons. 

Tank must be minimum 14% full for leak rate of 0.2 gph. 

Minimum product level required based on 14% full tank and tank diameter is as follows: 

48" dia/min 9.5"; 

120" dia/min 24.7". 

For other tank diameters, consult manufacturer. 

Tank must be minimum 90% full for leak rate of 0.1 gph. 

Waiting Time Minimum of 8 hours between delivery and testing for leak rate of 0.2 gph. 

Minimum of 12 hours between delivery and testing for leak rate of 0.1 gph. 

There must be no delivery during waiting time. 

Minimum of 30 minutes between dispensing and testing. 

Test Period Variable: 

Minimum of 30 minutes, 1, 2 or 3 hours for leak rate of 0.2 gph and minimum of 2 or 3 hours for leak rate of 0.1 

gph. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated as the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a probe containing 5 thermistors with the lowest thermistor located at the 

10% tank volume level above the bottom of the tank. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.848 inch. 

Minimum detectable change in water level is 0.043 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains product. 

Dresser Wayne AB Evaluator: Ken Wilcox Associates 

Limhamnsvagen 109, Box 30049 Tel: (816) 443-2494 

SE-200 61 Malmo, Sweden Date of Evaluation: 11/03/00 

Tel: Unavailable 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

82

Issue Date: July 14, 2003 

Revision Date: June 8, 2005

Dresser Wayne Europe

TIG 5000 ATG System 

(Q0400-4xx Magnetostrictive Probe)

CONTINUOUS IN-TANK LEAK DETECTION METHOD 

(CONTINUOUS AUTOMATIC TANK GAUGING)

Certification Leak rate of 0.2 gph with PD = 99.1% and PFA = 0.9%. 

Leak 

Threshold

0.1 gph for single and manifolded tank systems. 

A tank system should not be declared tight and a message printed for the operator, if the test results 

indicate a loss or gain that exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

The system is designed primarily for use with petroleum fuels. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 35,000 gallons for single tanks and for up to 2 tanks manifolded together. 

Throughput Monthly maximum of 130,000 gallons. 

Waiting Time Minimum of 6 hours stabilization time is allowed between delivery and data collection. 

Test Period Average data collection time is 12 days. 

During evaluation, data collection time ranged from 1 to 31 days. 

Data sampling frequency is at least once per minute. 

System collects data at naturally occurring product levels without interfering with normal tank operation 

and discards data from unstable periods when system performs test. 

Temperature Average for product is determined by a minimum of 5 sensors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.66 inch. 

Minimum detectable change in water level is 0.039 inch. 

Calibration Temperature sensors are factory calibrated. 

Probe must be checked and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments System reports a result of "pass" or "fail." 

Evaluated using both single and manifolded tank systems with probes in each tank. 

Data can be collected when the product level is between 9% and 94.9% of tank volume. 

System distinguishes large leak rates (> 1gph) from dispensing activities and reports those as "fail". 

For valid monthly testing, a conclusive test report must be produced for each tank every month. 

System warns operator if there are no "passing" tests completed during the month. 

For very active tanks, a tank shut down may become necessary in order for the syst!Unexpected End 

of Formulam to collect enough quiet-time data for a test. 

The 6-hour stabilization period after delivery may result in the system not testing the top portion of a 

very active tank. In this situation, a periodic test in the shut-down mode with a high product level 

should be used to test the entire portion of tank that routinely contains product. 

Because the database for evaluation of the system did not include sites with vapor recovery, 

certification is limited to sites with no vapor recovery. 

Evaluated using gasoline. 

Dresser Wayne AB Evaluator: Ken Wilcox Associates 

Limhamnsvagen 109, Box 30049 Tel: (816) 443-2494 

SE-200 61 Malmo, Sweden Dates of Evaluation: 03/13/00 

Tel: Unavailable 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

83

Issue Date: July 27, 2004 

Revision Date: July 6, 2006

EBW, Inc.

AS-LS300 Series 

(Originally listed as Campo/Miller LS300-120 PLUS AL, LS300-120 PLUS AL A/S, LS300-120 

PLUS AL LSI) 

(for Rigid and/or Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol. 

Leak 

Threshold

1.5 gph for leak rate of 3.0 gph. 

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuels, fuel oil #4, waste oil, kerosene. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized rigid or flexible pipelines for all leak rates. 

System tests pressurized combination rigid and flexible pipelines for 3.0 gph leak rate 

only. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

For 3.0 gph leak rate test: 

 Maximum of 396.6 gallons for rigid pipelines. 

 Maximum of 95.5 gallons for flexible pipelines. 

 Maximum of 492.1 gallons for combination of rigid and flexible pipelines 

 (rigid portion cannot exceed 396.6 gallons and flexible portion cannot exceed 95.5 

 gallons). 

For 0.2 leak rate and 0.1 gph leak rate tests: 

 Maximum of 163 gallons for rigid pipelines (Example: 350 feet of 

 3 3/8 inch line). 

 Maximum of 39.5 gallons for flexible pipelines (Example: 430 feet of 1 1⁄2 inch line). 

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 3 hours between dispensing and testing for leak rate of 0.2 gph. 

Minimum of 6 hours between dispensing and testing for leak rate of 0.1 gph. 

Test Period Response time is 10 minutes for leak rate of 3.0 gph. 

Minimum of 25 minutes for leak rate of 0.2 gph. 

Minimum of 34 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

DATA SHEET CONTINUED ON NEXT PAGE
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

84

DATA SHEET CONTINUED FROM PREVIOUS PAGE: EBW, Inc., AS-LS300 Series 

(Originally listed as Campo/Miller LS300-120 PLUS AL, LS300-120 PLUS AL A/S, LS300-120 

PLUS AL LSI) (for Rigid and/or Flexible Pipelines)

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline every 45 minutes for leak rate of 3.0 gph. 

Automatic testing of pipeline when pump has been idle for 3 hours for leak rate of 0.2 

gph. 

Automatic testing of pipeline when pump has been idle for 6 hours for leak rate of 0.1 

gph. 

Preset threshold. 

Triplicate testing to determine if pipeline is leaking. 

Pump shutdown, indicator light and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

EBW, Inc. Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 06/23/95, 09/10/98, 05/26/06 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.ebw.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

85

Issue Date: July 27, 2004 

Revision Date: June 8, 2005 

EBW, Inc.

AutoStik II, AutoStik Jr., with SCALD 2.0 

(INCON TSP-LL2 Magnetostrictive Probe)

CONTINUOUS IN-TANK LEAK DETECTION METHOD 

(CONTINUOUS AUTOMATIC TANK GAUGING)

Certification Applies only to EBW, Inc. AutoStik II and AutoStik Jr., with SCALD 2.0 models sold on or after March 1, 

2004. 

Leak rate of 0.2 gph with PD > 99% and PFA < 1%. 

Leak 

Threshold

0.10 gph for single and manifolded tank systems. 

A tank system should not be declared tight and a message printed for the operator, if the test results 

indicate a loss or gain that exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 49,336 gallons for single tanks and for all tanks manifolded together. 

Tank must be between 14 and 93.5% full. 

Contact manufacturer for tank system applications if total tank capacity exceeds 30,000 gallons. 

Throughput Monthly maximum of 257,818 gallons. 

Waiting Time None between delivery and data collection when difference between product in tank and product 

delivered is 6.0 degrees F or less. 

Test Period Data collection time ranges from 5 to 28 days. Data sampling frequency is > 1 per second. 

System collects data at naturally occurring product levels without interfering with normal tank operation, 

and discards data from unstable periods when system performs test. 

Temperature Average for product is determined by a minimum of 5 thermistors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.208 inch. 

Minimum detectable change in water level is 0.011 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments System reports a result of “pass” or “fail”. 

Evaluated using both single and manifolded tank systems with probes in each tank. 

Tests only the portion of the tank containing product. 

As product level is lowered, the leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains 

product. 

AutoStik Jr. can support up to 4 tanks. 

AutoStik II can support up to 8 tanks. 

The database for evaluation of the system includes sites with vapor recovery and blending dispensers. 

EBW, Inc. Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 07/11/2003 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.ebw.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

86

Issue Date: April 18, 1997 

Revision Date: March 10, 2000 

EBW, Inc.

AutoStik Sensors 

LS-5, LS-7, LS-10, LS-15, LS-20, LS-35, LS-3A, LS-30A

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch 

Test Results: 

LS-5, LS-35 (float switches) unleaded gasoline diesel water

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (cm) 1.317 1.23 1.156 

LS-10, LS-15, LS-20 (float switches) 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 2.870 2.822 2.667 

LS-3A (N.C. and N.O.) 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (cm) 2.59 2.38 2.08 

LS-30A (low level) 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (cm) 8.79 8.48 8.15 

LS-30A (high level) 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (cm) 23.65 23.04 22.78 

LS-7 

Detection time (sec) <1 N/A* <1 

Fall time (sec) <1 N/A <1 

Lower detection limit (cm) 1.09 N/A 0.81 

*See glossary. 

Specificity Results:

Manufacturer and evaluator claim that sensors will respond to any liquid. 

Manufacturer’s Specifications: 

There is no manufacturer’s recommended maintenance schedule. 

Comments:

Sensors are reusable.

EBW, Inc. Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Dates of Evaluation: 04/20/93, 07/05/94 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.ebw.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

87

Issue Date: April 18, 1997 

Revision Date: March 10, 2000 

EBW, Inc.

AutoStik Discriminating Sensors 

LS-5, LS-10, LS-15, LS-20, LS-35

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: product permeability 

Test Results:

LS-5, LS-35 (polymer strips) unleaded gasoline diesel water

Detection time (min) ~7 ~60 N/A* 

Fall time (sec) N/A N/A N/A 

Lower detection limit (cm) <0.014 <0.014 N/A 

LS-10, LS-15, LS-20 (polymer strips) 

Detection time (min) ~7 ~60 N/A* 

Fall time (sec) N/A N/A N/A 

Lower detection limit (in) <0.014 <0.014 N/A 

*See glossary. 

Specificity Results:

Manufacturer and evaluator claim sensors will respond to any liquid, except water. 

Manufacturer’s specifications: 

Operating temperature: -20 degrees F to 150 degrees F (-28.9 degrees C to 65.5 degrees C). 

There is no manufacturer’s recommended maintenance schedule. 

Comments: 

Sensors can be reset by exposing them to air. 

Sensors are reusable. 

EBW, Inc. Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 07/05/94 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.ebw.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

88

Issue Date: June 19, 1996 

Revision Date: December 4, 2002 

EFA Technologies, Inc.

LeakNet

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above)

Certification Leak rate of 3.0 gph at 10 psi with PD = 100% and PFA = 0%. 

The USEPA has not set a minimum detectable leak rate for large diameter pipeline systems 

(airport hydrant systems) at the time of this evaluation.

Leak 

Threshold

2.2 gph. 

A pipeline system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuels, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized bulk material transfer pipelines. 

Suitable for all pressurized steel, plastic, fiberglass, or concrete pipelines. 

System is used as an equivalent 3 gph line leak detector. 

Leak detection flow rates are proportional to pressure in pipeline. 

Testing is conducted while the product is not flowing in the pipeline. 

Pipeline must be full and under pressure. 

Gravity feed pipelines under constant static head pressure may be tested with system. 

Pipeline 

Capacity

Maximum of 116,230 gallons. 

System tested on 58,115 gallon pipeline. 

Use of pipeline test protocol allows system to be used on pipelines twice the volume of test pipeline. 

Contact manufacturer prior to using on pipelines exceeding 58,115 gallons through 116,230 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Response time is 2 to 5 minutes. 

Test data are acquired and recorded by system's computer. 

Calculations are automatically performed by system's computer. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline at least once per hour under static conditions. 

Continuous operation during flowing conditions (however, thresholds are higher due to hydraulic noise in 

pipeline). 

Declaration of leak if current changes in pressure exceed tuning parameters, or if pressure fluctuates in 

a manner that is characteristic of a leak. Pump shutdown, indicator light and alarm activation if leak is 

declared. 

Calibration System must be checked annually. 

Standard electronic field instruments used by the system require normal annual inspection and 

calibration checks. 

Comments Designed to replace a mechanical line leak detector to detect equivalent 3 gph releases at 10 psi on 

large pipelines at pressures higher than those found at typical service station. 

EFA Technologies, Inc. Evaluator: Ms. Terri Regan - 

116 20th St. Naval Facilities Engineering Service Center 

Sacramento, CA 95814 Tel: (202) 433-5196 

Tel: (916) 443-8842 Date of Evaluation: 09/26/95 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

89

Issue Date: November 22, 1995 

Revision Date: March 16, 1998 

Egemin Naamloze Vennootschap

E'SPI III (Mass Buoyancy Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 97.9% and PFA = 1.1%.

Leak 

Threshold

0.075 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full.

Waiting Time Minimum of 7 hours between delivery and testing. 

There must be no dispensing or delivery during waiting time.

Test Period Minimum of 5 hours, 30 minutes. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from average of subsets of all collected data. 

There must be no dispensing or delivery during test.

Temperature Average for product is obtained by a single moving quartz crystal temperature sensor.

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.253 inch. 

Minimum detectable change in water level is 0.029 inch.

Calibration Temperature sensor and probe must be checked and, if necessary, calibrated in 

accordance with manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

Egemin Naamloze Vennootschap Evaluator: Midwest Research Institute 

Bredabaan 1201 - 2900 Tel: (816) 753-7600 

Schoten, Belgium Date of Evaluation: 12/21/90 

Tel: 011-32-3-03/645 27 90 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

90

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

Egemin Naamloze Vennootschap

E'SPI IV (Mass Buoyancy Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 97.2% and PFA = 0.3%.

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 15,000 gallons. Tank must be between 50 and 95% full.

Waiting Time Minimum of 6 hours between delivery and testing. 

There must be no dispensing or delivery during waiting time.

Test Period Minimum of 2 hours, 15 minutes. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from average of subsets of all collected data. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a minimum of 5 thermistors.

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.253 inch. 

Minimum detectable change in water level is 0.029 inch.

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

Egemin Naamloze Vennootschap Evaluator: Midwest Research Institute 

Bredabaan 1201 - 2900 Tel: (816) 753-7600 

Schoten, Belgium 

Tel: 011-32-3-03/645 2790 Date of Evaluation: 12/21/90 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

91

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

Engineered Systems, Inc.

Image II 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 96.6% and PFA = 3.4%.

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 15,000 gallons. 

Tank must be minimum 90% full.

Waiting Time Minimum of 8 hours between delivery and testing. 

There must be no dispensing or delivery during waiting time.

Test Period Minimum of 6 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from average of subsets of all collected data. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a minimum of 5 resistance temperature 

detectors (RTDs).

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.83 inch. 

Minimum detectable water level change is 0.0116 inch.

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

Engineered Systems Inc. Evaluator: Ken Wilcox Associates 

2001 W. Campus Dr. Tel: (816) 443-2494 

Tempe, AZ 85282 Date of Evaluation: 08/20/93 

Tel: (602) 438-1362 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

92

Issue Date: December 5, 2002

Engineering Design Group, Inc.

EDG XLD 2000 Plus (Revision 1.02) Leak Detection System 

(MTS DDA Magnetostrictive Probe)

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 12,074 ft2, leak rate is 1.92 gph with PD = 95% and PFA = 5%. 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 12,074 ft2) x 1.92 gph]. 

Example: For a tank with PSA = 1,260 ft2; leak rate = [(1,260 ft2 ÷ 12,074 ft2) x 1.92 gph] = 0.2 

gph. 

Leak rate may not be scaled below 0.2 gph. 

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 12,074 ft2, leak threshold is 0.96 gph 

For other tank sizes, leak threshold equals [(PSA in ft2 ÷ 12,074 ft2) x 0.96 gph]. 

Example: For a tank with PSA = 1,260 ft2; leak threshold = [(1,260 ft2 ÷ 12,074 ft2) x 0.96 gph] 

= 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds the calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single, field-constructed, vertical-walled tanks having a capacity of 50,000 to 

2,100,000 gallons. 

Minimum product surface area (PSA) is 1260 ft2. 

Maximum product surface area (PSA) is 12,076 ft2. 

Performance not sensitive to product level. 

Waiting Time Minimum of 30 hours, 18 minutes after delivery or transfer. 

Test Period Minimum of 40 hours, 12 minutes. 

There must be no delivery, transfer, or dispensing during test. 

Temperature Average for product is determined by five resistance temperature detectors (RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 2.655 inches. 

For tanks with a PSA of 12,076 ft2 and containing 2.665 inches of water, system takes 52.7 hours 

to detect a 0.20 gph water ingress rate. 

Calibration System must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. Evaluated in nominal 

2,100,000 gallon tank with PSA of 12,076 ft2 (124 feet in diameter). 

If product temperature change exceeds 1.8 degrees F during test, test will abort. 

Engineering Design Group, Inc. Evaluator: Ken Wilcox Associates 

Manufacturer’s Previously Listed Contact Tel: (816) 443-2494 

Information is No Longer Valid. Date of Evaluation: 11/16/01 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

93

Issue Date: December 5, 2002

Engineering Design Group, Inc.

Ronan X-76 CTM Automatic Tank Gauging System 

(MTS Level Plus UST Probe)

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 564 ft2, leak rate is 0.2 gph with PD > 99.9% and PFA < 0.1%. 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 564 ft2) x 0.2 gph]. 

Example: For a tank with PSA = 846 ft2; leak rate = [(846 ft2 ÷ 564 ft2) x 0.2 gph] = 0.3 gph. 

Leak rate may not be scaled below 0.2 gph. 

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 564 ft2, leak threshold is 0.1 gph. 

For other tank sizes, leak threshold equals [(PSA in ft2 ÷ 564 ft2) x 0.96 gph]. 

Example: For a tank with PSA = 846 ft2; leak threshold = [(846 ft2 ÷ 564 ft2) x 0.1 gph] = 0.15 

gph. 

Leak threshold may not be scaled below 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds the calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single, field-constructed, vertical-walled tanks having a capacity of 50,000 to 75,000 

gallons. 

Maximum product surface area (PSA) is 846 ft2. 

Waiting Time Minimum of 4 hours, 48 minutes after delivery or transfer. 

Test Period Minimum of 6 hours. There must be no delivery, transfer, or dispensing during test. 

Temperature Average for product is determined by five resistance temperature detectors (RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.874 inch. 

Minimum detectable change in water level is 0.011 inch. 

For tanks with a product surface area (PSA) of 564 ft2 and containing 0.874 inches of water, 

system takes more than 64 days to detect a 0.20 gph water ingress rate. 

Calibration System must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

Evaluated in nominal 50,000 gallon tank with PSA of 564 ft2. 

Engineering Design Group, Inc. Evaluator: Ken Wilcox Associates 

Manufacturer’s Previously Listed Contact Tel: (816) 443-2494 

Information is No Longer Valid. Date of Evaluation: 11/16/01 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

94

Issue Date: November 22, 1995 

Revision Date: December 4, 1997 

Environment and Safety

EASI Level-Tru 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.4% and PFA = 4.6%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 4 hours, 6 minutes between delivery and testing. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 3 hours, 36 minutes. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data collected over the entire range of test period. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 resistance temperature detectors 

(RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.896 inch. 

Minimum detectable change in water level is 0.023 inch. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Environment and Safety, Inc. Evaluator: Midwest Research Institute 

252 Welsh Pool Rd. Tel: (816) 753-7600 

Exton, PA 19341-1313 Date of Evaluation: 04/11/91 

Tel: Unavailable 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

95

Issue Date: August 23, 1999 

Revision Date: March 10, 2000 

EnviroSIR LLC

EnviroSIR Version 1.0

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.2 gph with PD = 97.4% and PFA = 0.1% 

Leak rate of 0.1 gph with PD = 97.4% and PFA = 2.6%

Leak 

Threshold

0.15 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 45,000 gallons for single tanks. 

Maximum of 45,000 gallons cumulative capacity for manifolded tank systems with no 

more than 4 tanks in the system.

Data 

Requirement

Minimum of 28 days of usable product level and throughput data.

System 

Features

Method of data analysis that system employs, and was used during evaluation process, 

is exclusive of any external control by vendor. 

System consists of a fully automated software package with embedded algorithms for 

conducting leak detection testing. Consequently, third party evaluation procedure 

demonstrated that system can be used in-house with no requirement for direct vendor 

participation, except in certain rare cases when system generates a flag that requires a 

vendor trained and certified specialist to analyze data and make the final decision. 

System incorporates context-sensitive "Help" information.

Evaluation 

Features

Evaluator tested this system for in-house use. Computer program disk along with 

instructional documentation was supplied by vendor to evaluator. Evaluator, without 

vendor involvement, analyzed required data and performed evaluation using program 

disk and accompanying documentation. Vendor was not present during evaluation. 

This system was also evaluated using a leak threshold of 0.1gph for leak rate of 0.2 

gph and is available at the user's request.

Comments 53% of data sets evaluated were from manifolded tank systems. 

Of 43 data sets submitted for evaluation, all were analyzed with conclusive results. 

Median monthly throughput for tanks evaluated was 18,897 gallons. 

Leak rates of 0.05, 0.10, and 0.20 gph were used in evaluation. Data sets evaluated 

were supplied by evaluator.

EnviroSIR LLC Evaluator: Ken Wilcox Associates 

1003 East Saint Mary Blvd., P.O. Box 52565 Tel: (816) 443-2494 

Lafayette, LA 70505 Date of Evaluation: 10/20/98 

Tel: (337) 935-0205 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

96

Issue Date: November 22, 1995 

Revision Date: September 2, 2008 

Estabrook EZY CHEK Systems 

(originally listed as Horner EZY CHEK)

EZY-Chek Manual Line Leak Detector 

(for Rigid Pipelines)

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 98.0% and PFA = 1%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests fiberglass and steel pipelines. 

Tests are conducted at 150% operating pressure. 

Mechanical line leak detector must be removed or manually isolated from pipeline for 

duration of test, or if testing is to be conducted with mechanical line leak detector in 

place, check valve in pump must be manually closed.

Pipeline 

Capacity

Maximum of 426 gallons.

Waiting Time None between delivery and testing. None between dispensing and testing.

Test Period Under ideal conditions, 30 minutes; actual test time will depend on line size and 

temperature conditions at the site. 

Data are collected every 15 minutes. 

Three consecutive consistent readings are required for a valid test, with the first 

reading taken at zero time. 

Test data are acquired and recorded manually. 

Manual calculations performed by the operator on site.

Calibration No temperature sensors used. 

No calibration required. 

System must be checked annually in accordance with manufacturer's instructions. 

Technicians must be certified by the manufacturer prior to using this equipment, and 

recertified every two years.

Estabrook EZY CHEK Systems Evaluator: Ken Wilcox Associates 

1505 Woodside Ave. Tel: (816) 443-2494 

Essexville, MI 48732 Dates of Evaluation: 07/09/92, 05/21/08 

Tel: (989) 891-9868 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

97

Issue Date: October 13, 2006 

Revision Date: September 2, 2008 

Estabrook EZY CHEK Systems 

(originally listed as Horner EZY CHEK)

EZY-Chek Manual Line Leak Detector 

(for Flexible Pipelines)

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 99.8% and PFA = 0.2%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests flexible pipelines. 

Tests are conducted at 150% operating pressure. 

Mechanical line leak detector must be removed or manually isolated from pipeline for 

duration of test, or if testing is to be conducted with mechanical line leak detector in 

place, check valve in pump must be manually closed.

Pipeline 

Capacity

Maximum of 101 gallons (example: 275 feet of 3 inch line).

Waiting Time None between delivery and testing. None between dispensing and testing.

Test Period Under ideal conditions 30 minutes; actual test time will depend on line size and 

temperature conditions at the site. 

Data are collected every 15 minutes. 

Three consecutive consistent readings are required for a valid test. 

Data from the evaluation suggests that the actual minimum test time for a line this 

size is 2 hours. 

Test data are acquired and recorded manually. 

Manual calculations performed by the operator on site.

Calibration No temperature sensors used. 

No calibration required. 

System must be checked annually in accordance with manufacturer's instructions. 

Technicians must be certified by the manufacturer prior to using this equipment, and 

recertified every two years. 

Estabrook EZY CHEK Systems Evaluator: Ken Wilcox Associates 

1505 Woodside Ave. Tel: (816) 443-2494 

Essexville, MI 48732 Date of Evaluation: 07/09/92, 09/05/06 

Tel: (989) 891-9868 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

98

Issue Date: November 22, 1995 

Revision Date: May 23, 2007 

Estabrook EZY CHEK Systems 

(originally listed as Horner EZY CHEK)

EZY-Chek II Automatic Line Leak Detector

LINE TIGHTNESS TEST METHOD 

Certification Leak rate of 0.1 gph with PD = 99.0% and PFA = 1%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests fiberglass and steel pipelines. 

Tests are conducted at 150% operating pressure.

Pipeline 

Capacity

Maximum of 129 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Minimum of 2 hours. 

Data are collected every 30 seconds. 

Testing period consists of a monitor mode and test mode. 

Data are collected in monitor mode until two consecutive 15 minute records are within 

0.01 gallon of each other. Then an additional 15 minutes is required in monitor mode 

before start of test mode. 

Data are collected in test mode for 1 hour, 7 minutes. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor.

Calibration Sensors must be calibrated in accordance with manufacturer's instructions before each 

test.

Estabrook EZY CHEK Systems Evaluator: Ken Wilcox Associates 

1505 Woodside Ave. Tel: (816) 443-2494 

Essexville, MI 48732 Date of Evaluation: 07/13/92 

Tel: (989) 891-9868 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

99

Issue Date: November 22, 1995 

Revision Date: May 23, 2007 

Estabrook EZY CHEK Systems 

(originally listed as Horner EZY CHEK)

EZY 3

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (VACUUM) 

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

A tank system should not be declared tight when the vacuum decay is more than 1 inch water column 

pressure for non-volatile products and 10% of the lower determined vapor pressure for volatile products, 

or when water ingress is detected by the water sensor. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer. 

Tank 

Capacity

Maximum of 12,000 gallons if groundwater is not present. 

Maximum of 50,000 gallons if groundwater is present and a vacuum of 1.0 to 1.7 psi can be maintained. 

For gasoline, ullage volume must be between 800 and 2,500 gallons. 

For diesel, ullage volume must be between 500 and 1,500 gallons. 

Waiting Time None between delivery and testing. 

Test Period Minimum of 2 hours, 30 minutes for gasoline (1 hour, 30 minutes vapor equilibrium recirculation time* 

plus 1 hour test period) when groundwater is below bottom of tank. 

Minimum of 1 hour, 30 minutes for diesel and less volatile products (30 minutes vapor equilibrium 

recirculation time* plus 1 hour test period) when groundwater is below bottom of tank. 

Minimum of 1 hour when groundwater is above bottom of tank. 

Test period based on water ingress depends on tank size and must be calculated in accordance with 

manufacturer's instructions. 

Test data are acquired and recorded manually. 

*The vapor equilibrium recirculation time is the time required to apply a vacuum and to saturate ullage 

with vapors. 

There must be no dispensing or delivery during test. 

Test Pressure Vacuum must be maintained between 1.0 to 1.7 psi at bottom of tank. 

Vacuum must not be greater than 4.0 psi in ullage. 

Temperature Vacuum decay is independent of product temperature. 

Water Sensor Conductivity water sensor must be used to detect water ingress and must be calibrated for every test. 

Minimum detectable water level is 0.014 inch. Minimum detectable change in water level is 0.0095 inch. 

Minimum water level in tank must be adjusted to 0.014 inch before calibrating the sensor. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, water sensor must be used and test time extended to ensure 

water ingress detection during test. 

Comments Not evaluated using manifolded tank systems. 

Evaluated using gasoline and diesel. 

Test may not be effective in some tank excavation backfill (such as clay) because it may plug holes in 

tank. 

If soil is saturated with product, air or water ingress may not be detected by vacuum test. 

A well point in tank excavation backfill may help identify presence of this condition. 

Estabrook EZY CHEK Systems Evaluator: Ken Wilcox Associates 

1505 Woodside Ave. Tel: (816) 443-2494 

Essexville, MI 48732 Dates of Evaluation: 08/23/94, 02/08/95 

Tel: (989) 891-9868 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

100

Issue Date: January 11, 2001 

Revision Date: December 31, 2009 

Estabrook EZY CHEK Systems 

(originally listed as Horner EZY CHEK)

EZY 3 Locator Plus 

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (VACUUM)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 1.6%.

Leak 

Threshold

A tank system should not be declared tight when the acoustic signal detected is 

different from the baseline signal before a vacuum is placed on the tank, or when 

water ingress is detected by the water sensor.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer.

Tank Capacity Maximum of 30,000 gallons. 

Ullage volume must exceed the greater of 1% of tank volume or 50 gallons. 

Maximum of 30,000 gallons per tank for manifolded tank systems with microphone, 

water sensor and pressure monitoring gauges in each tank.

Waiting Time None between delivery and testing.

Test Period When groundwater level in tank excavation backfill is below bottom of tank: 

A few minutes to determine background noise and at least 2 minutes to run the test 

after desired vacuum is reached. 

When groundwater level in tank excavation backfill is above bottom of tank or when 

the groundwater level in the tank excavation backfill has not been determined: 

The time it takes for water ingress to increase the water level in the tank to allow the 

water sensor to detect the "minimum detectable change in water level" (see "Water 

Sensor" section below). 

Test period based on water ingress is dependent on tank size. For example, the test 

period is 36 minutes for a 10,000 gallon (96" dia x324" long) tank. 

Before starting test, water sensor must be calibrated to "minimum detectable water 

level" (see "Water Sensor" section below) according to manufacturer's instructions. 

There must be no dispensing or delivery during test.

Test Pressure Pressure differential across tank wall at bottom of tank must be at least 0.5 psig. 

Pressure differential across tank wall is equal to the absolute value of vacuum applied 

to tank, plus pressure of tank excavation backfill on tank, plus groundwater pressure 

on tank, minus pressure of liquid in tank.

Temperature Acoustic signal is independent of product temperature.

DATA SHEET CONTINUED ON NEXT PAGE
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

101

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Estabrook EZY CHEK Systems 

EZY 3 Locator Plus

Water Sensor Conductivity water sensor must be used to detect water ingress and must be 

calibrated for every test when groundwater level in tank excavation backfill is above 

bottom of tank or when the groundwater level in the tank excavation backfill has not 

been determined. 

Minimum detectable water level is 0.014 inch. 

Minimum detectable change in water level is 0.0095 inch. 

Minimum water level in tank must be adjusted to at least 0.014 inch (sensor's 

minimum detectable water level) before calibrating sensor and starting test.

Groundwater Groundwater level in tank excavation backfill must be determined by observation well 

or soil probe in tank excavation backfill. 

If groundwater level in tank excavation backfill is above bottom of tank or the 

groundwater level in the tank excavation backfill has not been determined, water 

sensor must be used and test time extended to ensure water ingress detection during 

test.

Comments Microphone was 25 ft away from leak source during evaluation. 

Although not tested on empty tanks, a third party acoustics specialist has certified the 

device is equally effective when tanks are empty as when tanks contain product. 

Test may be inconclusive if there is high background noise. 

Vacuum test method may not be effective in some tank excavation backfill (such as 

clay) because it may plug holes in tank. 

If free product is present in tank excavation backfill, a leak in the free product zone 

may not be detected by a vacuum test method. 

An observation well or soil probe in tank excavation backfill may help determine 

backfill material, water level in tank excavation backfill, and free product. 

Manufacturer must certify operator at least every 2 years. 

More than 4 psi pressure differential across the tank wall at any location in the tank 

could damage tank.

Estabrook EZY CHEK Systems Evaluator: Ken Wilcox Associates 

1505 Woodside Ave. Tel: (816) 443-2494 

Essexville, MI 48732 Date of Evaluation: 07/28/00 

Tel: (989) 891-9868 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

102

Issue Date: November 22, 1995 

Revision Date: September 10, 2004 

Estabrook EZY CHEK Systems 

(originally listed as Horner EZY CHEK)

EZY-Chek I

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL) 

Estabrook EZ Chek Systems no longer manufactures or supports the use of 

this method.

Certification Leak rate of 0.1 gph with PD = 99% and PFA = 1%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 12,000 gallons. 

Tank must be minimum 100% full.

Waiting Time Minimum of 6 hours between delivery and testing. Minimum of 3 hours between 

"topping off" and testing. 

Total minimum waiting time is 6 hours. 

There must be no product dispensing or delivery during waiting time.

Test Period Minimum of 1 hour, 30 minutes (30 minute monitor period, plus 1 hour test period). 

Testing must continue until data meets manufacturer's stop test criteria. 

Volume data are collected and recorded by a strip chart recorder. Leak rate is 

calculated from data of last 1 hour of test period. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a resistance temperature detector (RTD) and 

displayed on a LCD readout.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide net 

pressure of 2-4 psi at bottom of tank. 

Groundwater level must be stable prior to and during test.

Calibration Level sensors must be calibrated in accordance with manufacturer's instructions before 

each test.

Comments Not evaluated using manifolded tank systems.

Estabrook EZY CHEK Systems Evaluator: W. A. Kibbe and Associates 

1505 Woodside Ave. Tel: (517) 797-2425 

Essexville, MI 48732 Date of Evaluation: 10/03/90 

Tel: (989) 891-9868 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

103

Issue Date: November 22, 1995 

Revision Date: May 23, 2007 

Estabrook EZY CHEK Systems 

(originally listed as Horner EZY CHEK)

EZY-Chek II

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL) 

Certification Leak rate of 0.1 gph with PD = 99.95% and PFA = 0.05%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 12,000 gallons. 

Tank must be minimum 100% full.

Waiting Time Minimum of 6 hours between delivery and testing. Minimum of 3 hours between 

"topping off" and testing. 

Total minimum waiting time is 6 hours. 

There must be no delivery or dispensing during waiting time.

Test Period Minimum of 1 hour, 40 minutes (33 minutes monitor mode and 1 hour, 7 minutes test 

mode). 

At the conclusion of test mode, data are checked for the manufacturer's stop test 

criteria. 

If data do not meet the criteria, testing must continue. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from last 1 hour, 7 minutes of test period data. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a resistance temperature detector (RTD).

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide net 

pressure of 2-4 psi at bottom of tank. 

Groundwater level must be stable prior to and during test.

Calibration Load cell must be calibrated in accordance with manufaturer's instructions before each 

use.

Comments Not evaluated using manifolded tank systems.

Estabrook EZY CHEK Systems Evaluator: W. A. Kibbe and Associates 

1505 Woodside Ave. Tel: (517) 797-2425 

Essexville, MI 48732 Date of Evaluation: 09/18/90 

Tel: (989) 891-9868 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

104

Issue Date: November 22, 1995 

Revision Date: September 2, 2008 

Estabrook EZY CHEK Systems 

(originally listed as Horner EZY CHEK)

EZY-Chek II

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL) 

Estabrook EZ Chek Systems no longer manufactures or supports the use of 

this method. 

Certification Leak rate of 0.1 gph with PD = 95.79% and PFA = 4.21%. 

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 12,000 gallons. 

Tank must be between 98 and 100% full. 

Waiting Time Minimum of 8 hours between delivery and testing. 

There must be no product dispensing or delivery during waiting time. 

Test Period Minimum of 1 hour, 40 minutes (33 minutes monitor mode and 1 hour, 7 minutes test 

mode). 

At the conclusion of test mode, data are checked for the manufacturer's stop test criteria. 

If data do not meet the criteria, testing must continue. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from last 1 hour, 7 minutes of test period data. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a resistance temperature detector (RTD). 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a 

minimum net pressure of 1 psi at bottom of tank during test. If this cannot be accomplished, 

then the tank cannot be tested using this system. 

Calibration Load cell must be calibrated in accordance with manufacturer's instructions before each use. 

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Estabrook EZY CHEK Systems Evaluator: W. A. Kibbe and Associates 

1505 Woodside Ave. Tel: (517) 797-2425 

Essexville, MI 48732 Date of Evaluation: 06/25/90 

Tel: (989) 891-9868 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

105

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

FCI Environmental, Inc.

Analog Hydrocarbon Probe AHP-100, Digital Hydrocarbon Probe DHP-100

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: fiber optic chemical sensor 

Test Results:

unleaded gasoline synthetic gasoline

Detection time (min) <8 <8 

Fall time (min) <5 <5 

Lower detection limit (cm) <0.01 <0.01 

Specificity Results (in addition to above):

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s). 

Comments: 

Sensors are reusable. 

FCI Environmental, Inc. Evaluator: Ken Wilcox Associates 

3250 Grant Street Tel: (816) 443-2494 

Signal Hill, CA 90804 Date of Evaluation: 01/15/94 

Tel: (800) 696-1331 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

106

Issue Date: November 22, 1995 

Revision Date: March 10, 2000

FCI Environmental, Inc.

Analog Hydrocarbon Probe AHP-100, Digital Hydrocarbon Probe DHP-100

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector:

Output type: quantitative 

Sampling frequency: continuous 

Operating principle: fiber optic 

Test Results (for tests conducted with 1000 ppm test gas): 

AHP-100 

unleaded 

gasoline

synthetic 

gasoline xylene benzene 2-methylbutane

Relative accuracy*

 (%) 12 22 2 35 N/R*

Bias (%) -7 -2 1 -23 N/R 

Precision (%) 4 15 1 11 N/R 

Detection time (min) <1 <1 <1 <1 N/R 

Fall time (min) <1 <1 <1 <1 N/R 

Lower Detection Limit (ppm) 137 220 84 519 N/R 

DHP-100 

Relative accuracy*

 (%) 18 29 0 17 N/R 

Bias (%) 1 -12 0 -9 N/R 

Precision (%) 9 10 0 11 N/R 

Detection time (min) <1 <1 <1 <1 N/R 

Fall time (min) <1 <1 <1 <1 N/R 

Lower Detection Limit (ppm) 73 118 45 280 N/R 

* See glossary. 

Test Results (for tests conducted with 10 ppm test gas):

AHP-100

unleaded 

gasoline

synthetic 

gasoline diesel

JP-4 

jet fuel

JP-8 

jet fuel p-xylene

kerosene

Lower Detection 

Limit (ppm) 9.25 13.26 5.79 5.26 10.89 12.94 14.65 

Specificity Results (%) (corrected for sensitivity differences):

AHP-100 DHP-100 AHP-100 DHP-100

unleaded gasoline 93 101 xylene 103 N/R 

synthetic gasoline** 100 92 toluene 96 97 

synthetic gasoline*** 98 88 pentane N/R N/R 

JP-4 jet fuel 105 109 methane N/R N/R 

benzene 76 89 butane N/R N/R 

trimethylbenzene 107 104 2-methylbutane N/R N/R 

p-xylene 101 100 n-hexane N/R 108 

** EPA March 1990 protocol 

*** Radian June 1990 protocol 

Comments: 

1000 ppm tests used a certified blend of concentrated gas to simulate a leak. 10 ppm test used a measured 

quantity of liquid product to simulate a leak. 

FCI Environmental, Inc. Evaluator: Ken Wilcox Associates 

3250 Grant Street Tel: (816) 443-2494 

Signal Hill, CA 90804 Dates of Evaluation: 03/07/94, 12/05/94 

Tel: (800) 696-1331 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

107

Issue Date: November 22, 1995 

Revision Date: April 18, 1997 

FDR Services, Inc.

GasPak Vapor Monitoring System

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: quantitative 

Sampling frequency: intermittent 

Operating principle: product permeable detector 

Test Results (averages of multiple concentrations):

benzene

heptane, 

3-methyl hexane Iso-octane

Accuracy (%) 103 102 107 103 

Bias (%) -1 1 2 1 

Precision (%) 2 2 4 2 

Lower detection limit (ppm) 1 1 1 1 

Specificity (%) 100 100 102 101 

pentane, 

2,4-dimethyl

pentane, 

2,3,4-trimethyl toluene m-xylene

Accuracy (%) 105 104 104 99 

Bias (%) 1 1 1 -6 

Precision (%) 3 3 3 4 

Lower detection limit (ppm) 3 1 1 4 

Specificity (%) 101 100 100 94 

Specificity Results:

See results above. 

Comments: 

Detection times were not directly measured. However, evaluator states, “experiential evidence predicts 

that the detector response will reach ‘alarm’ conditions (30% of maximum fresh fuel response) at a 

distance of 5 meters in slightly over one day.” 

Each cartridge is used once, then replaced by another. 

GasPak is produced and analyzed by Fayette Environmental Services, Inc., with exclusive marketing 

and implementation rights assigned to FDR Services, Inc. 

FDR Services, Inc. Evaluator: David G. Bray, Ph.D. 

Manufacturer’s Previously Listed Contact University of Missouri - Columbia 

Information is No Longer Valid. Tel: (573) 882-2439 

Date of Evaluation: 07/27/94 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

108

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

FE Petro, Inc.

STP-MLD Pipeline Leak Detector

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests fiberglass and steel pipelines. 

Tests are conducted at operating pressure.

Pipeline 

Capacity

Maximum of 129.14 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is less than 30 seconds.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

FE Petro, Inc. Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 07/01/92 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.fepetro.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

109

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

FE Petro, Inc.

STP-MLD-D Pipeline Leak Detector

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Diesel

Specification System tests steel and fiberglass pipelines. 

Tests are conducted at operating pressure.

Pipeline 

Capacity

Maximum for rigid system is 341 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Average response time is 1 minute.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

FE Petro, Inc. Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 04/30/94 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.fepetro.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

110

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

FE Petro, Inc.

STP-MLD-E Flexline Line Leak Detector 

(for Flexible Pipelines)

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel. Other liquids may be tested after consultation with the 

manufacturer.

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure.

Pipeline 

Capacity

Maximum of 49.6 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Average response time is 3 minutes.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Enviroflex pipeline with a bulk modulus* of 1,280 was used during evaluation. 

*See glossary.

FE Petro, Inc. Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 03/24/94 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.fepetro.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

111

Issue Date: April 19, 2001 

Revision Date: July 6, 2006

FE Petro, Inc.

STP-MLD-HC and STP-MLD-HCD Pipeline Leak Detectors 

(for Rigid and/or Flexible Pipelines)

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel for STP-MLD-HC. 

Diesel, kerosene for STP-MLD-HCD. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests pressurized rigid, flexible, and combination of rigid and flexible 

pipelines. 

Tests are conducted at operating pressure.

Pipeline 

Capacity

Maximum of 396.6 gallons for rigid pipelines. 

Maximum of 95.5 gallons for flexible pipelines. 

Maximum of 492.1 gallons for combination of rigid and flexible pipelines (rigid portion 

cannot exceed 396.6 gallons and flexible portion cannot exceed 95.5 gallons).

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is less than 30 seconds.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments STP-MLD-HC test conducted using gasoline in 200 feet of 3.25 inch fiberglass pipe. 

STP-MLD-HCD test conducted using diesel in 200 feet of 3.25 inch fiberglass pipe.

FE Petro, Inc. Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 11/07/00, 05/19/06 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.fepetro.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

112

Issue Date: June 24, 1996 

Revision Date: May 21, 2008

Franklin Fueling Systems 

(originally listed as INCON Intelligent Controls, Inc.)

TS-LLD Line Leak Detector

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified using an equivalent 

leak rate and pressure, in accordance with an acceptable protocol. 

Leak 

Threshold

1.5 gph for leak rate of 3.0 gph. 

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuels, fuel oil #4. 

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 163 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph and 0.2 gph. 

Minimum of 8 hours between dispensing and testing for leak rate of 0.1 gph. 

Test Period Response time is 3 minutes for leak rate of 3.0 gph. 

Response time is 50 minutes to 8 hours for leak rate of 0.2 gph. 

Response time is 40 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown, numerical "fail" code display and LED alarm light activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments For test using leak rate of 0.2 gph only: 

After 28 days have elapsed since the last passing monthly line leak test, system shuts off the submersible pump.

System display will flash number of days since the last passing test. Operator may reset button to enable 

dispensing for a 24 hour period. 

This procedure may be used for a maximum of 4 days. 

After 32 days have elapsed since last monthly test, system will disable dispensing and automatically initiate a 

test, and system will not authorize dispensing until a test is passed or system is serviced. 

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 07/06/95 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

113

Issue Date: June 24, 1996 

Revision Date: May 21, 2008

Franklin Fueling Systems 

(originally listed as INCON Intelligent Controls, Inc.)

TS-LLD Line Leak Detector 

(for Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified using an equivalent 

leak rate and pressure, in accordance with an acceptable protocol. 

Leak 

Threshold

1.5 gph for leak rate of 3.0 gph. 

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuels, fuel oil #4. 

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 49.6 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph and 0.2 gph. 

Minimum of 8 hours between dispensing and testing for leak rate of 0.1 gph. 

Test Period Response time is 3 minutes for leak rate of 3.0 gph. 

Response time is 2 hours, 21 minutes for leak rate of 0.2 gph. 

Response time is 50 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. Single test to determine if pipeline is leaking. 

Pump shutdown, numerical "fail" code display and LED alarm light activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments For test using leak rate of 0.2 gph only: 

After 28 days have elapsed since the last passing monthly line leak test, system shuts off the submersible 

pump. 

System display will flash number of days since the last passing test. 

Operator may reset button to enable dispensing for a 24 hour period. 

This procedure may be used for a maximum of 4 days. 

After 32 days have elapsed since last monthly test, system will disable dispensing and automatically initiate a 

test, and system will not authorize dispensing until a test is passed or system is serviced. 

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 07/06/95 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

114

Issue Date: October 2, 2003 

Revision Date: July 6, 2006 

Franklin Fueling Systems

TS-LS300 Series 

(Originally listed as Campo/Miller LS300-120 PLUS AL, LS300-120 PLUS AL A/S, LS300-120 

PLUS AL LSI) 

(for Rigid and/or Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol. 

Leak 

Threshold

1.5 gph for leak rate of 3.0 gph. 

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuels, fuel oil #4, waste oil, kerosene. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized rigid or flexible pipelines for all leak rates. 

System tests pressurized combination rigid and flexible pipelines for 3.0 gph leak rate 

only. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

For 3.0 gph leak rate test: 

 Maximum of 396.6 gallons for rigid pipelines. 

 Maximum of 95.5 gallons for flexible pipelines. 

 Maximum of 492.1 gallons for combination of rigid and flexible pipelines 

 (rigid portion cannot exceed 396.6 gallons and flexible portion cannot exceed 95.5 

 gallons). 

For 0.2 leak rate and 0.1 gph leak rate tests: 

 Maximum of 163 gallons for rigid pipelines (Example: 350 feet of 

 3 3/8 inch line). 

 Maximum of 39.5 gallons for flexible pipelines (Example: 430 feet of 1 1⁄2 inch line). 

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 3 hours between dispensing and testing for leak rate of 0.2 gph. 

Minimum of 6 hours between dispensing and testing for leak rate of 0.1 gph. 

Test Period Response time is 10 minutes for leak rate of 3.0 gph. 

Minimum of 25 minutes for leak rate of 0.2 gph. 

Minimum of 34 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

DATA SHEET CONTINUED ON NEXT PAGE
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

115

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Franklin Fueling Systems, TS-LS300 

Series (Originally listed as Campo/Miller LS300-120 PLUS AL, LS300-120 PLUS AL A/S, 

LS300-120 PLUS AL LSI) (for Rigid and/or Flexible Pipelines)

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline every 45 minutes for leak rate of 3.0 gph. 

Automatic testing of pipeline when pump has been idle for 3 hours for leak rate of 0.2 

gph. 

Automatic testing of pipeline when pump has been idle for 6 hours for leak rate of 0.1 

gph. 

Preset threshold. 

Triplicate testing to determine if pipeline is leaking. 

Pump shutdown, indicator light and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Dates of Evaluation: 06/23/95, 09/10/98, 05/26/06 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

116

Issue Date: September 1, 2006 

Revision Date: November 23, 2010

Franklin Fueling Systems

TS-LS500, TS-LS500E Series 

(For Rigid and/or Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified using an equivalent 

leak rate and pressure, in accordance with an acceptable protocol. 

Leak Threshold 1.5 gph for leak rate of 3.0 gph. 

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuels, fuel oil #4, waste oil, kerosene, biodiesel B6-B20 meeting ASTM D7647, 

biodiesel B100 meeting ASTM D6751*. Other liquids may be tested after consultation with the manufacturer. 

*NWGLDE Listings apply to leak detection functionality only and not material compatibility – see “Disclaimer” 

on page ii. 

Specification On pressurized rigid, flexible, or combination rigid and flexible pipelines, system can perform 

3.0 gph, 0.2 gph, and 0.1 gph tests. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 312.2 gallons for steel and fiberglass pipelines (examples: 480 feet of 4 inch line; 671 feet of 3 

3/8 inch line). 

Maximum of 95.4 gallons for flexible pipelines (examples: 260 feet of 3 inch line; 1040 feet of 1 1⁄2 inch line). 

Maximum of 415.8 gallons for combination rigid and flexible pipelines (the capacity of the flexible component 

cannot exceed 95.4 gallons). 

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph. 

Depending on temperature stability, 11⁄2 to 10 hours between dispensing and testing for leak rates of 0.2 gph 

and 0.1 gph. 

Test Period Response time is 1 to 2 minutes for leak rate of 3.0 gph. 

Minimum of 25 minutes for leak rate of 0.2 gph. 

Minimum of 34 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

System Features Permanent installation on pipeline. 

Automatic testing of pipeline every 45 minutes for leak rate of 3.0 gph. 

Automatic testing of pipeline when pump has been idle for 2 hours for leak rate of 0.2 gph. 

Automatic testing of pipeline when pump has been idle for 31⁄2 hours for leak rate of 0.1 gph. 

Pump shutdown, indicator light and alarm activation if leak is declared for 3.0 gph and 0.2 gph tests. 

The TS-LS500E series is an explosion proof version of the original TS-LS500 series. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with manufacturer's instructions. 

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Dates of Evaluation: 06/23/95, 09/10/98, 02/28/06, 

Tel: (800) 225-9787 08/28/06, 01/10/08 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

117

Issue Date: April 6, 2010

Franklin Fueling Systems 

(originally evaluated under EBW, Inc.)

AutoStik 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD 

As of April 1, 2009, Franklin Fueling Systems no longer manufactures this 

method.

Certification Leak rate of 0.2 gph with PD = 99.96% and PFA = 0.44%. 

Leak rate of 0.1 gph with PD = 95.34% and PFA = 4.66%. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 2 hours between delivery and testing for leak of 0.2 gph. 

Minimum of 8 hours between delivery and testing for leak of 0.1 gph. 

Minimum of 2 hours between dispensing and testing for leak of 0.2 gph. 

Minimum of 8 hours between dispensing and testing for leak of 0.1 gph. 

There must be no delivery during waiting time for leak of 0.2 gph. 

There must be no dispensing or delivery during waiting time for leak of 0.1 gph. 

Test Period Minimum of 4 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from average of subsets of all data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a single thermistor RTD. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.91 inch. 

Minimum detectable water level change is 0.025 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains product. 

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 02/07/1991 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

118

Issue Date: November 22, 1995 

Revision Date: April 6, 2010

Franklin Fueling Systems 

(originally listed as EBW, Inc.)

AutoStik II, AutoStik Jr. 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD 

As of April 1, 2009, Franklin Fueling Systems no longer manufactures this 

method.

Certification Applies only to AutoStik II and AutoStik Jr. models sold before March 1, 2004. 

Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1%. 

Leak rate of 0.1 gph with PD = 98.3% and PFA = 1.7%. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 6 hours between delivery and testing. 

Minimum of 6 hours between dispensing and testing for leak of 0.2 gph. 

Minimum of 2 hours between dispensing and testing for leak of 0.1 gph. 

There must be no delivery during waiting time for leak of 0.2 gph. 

There must be no dispensing or delivery during waiting time for leak of 0.1 gph. 

Test Period Minimum of 4 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from average of subsets of all data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 thermistors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.49 inch. 

Minimum detectable water level change is 0.0052 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of tank system which routinely contains product. 

Auto Stik Jr. is used with up to 4 magnetostrictive probes and can handle up to 8 input sensors. 

Auto Stik II is used with up to 16 magnetostrictive probes and can handle up to 64 input sensors. 

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 08/20/93 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

119

Issue Date: July 27, 2004 

Revision Date: April 6, 2010 

Franklin Fueling Systems 

(originally listed as EBW, Inc.)

AutoStik II, AutoStik Jr. 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD 

As of April 1, 2009, Franklin Fueling Systems no longer manufactures this 

method.

Certification Applies only to AutoStik II and AutoStik Jr. models sold on March 1, 2004 to April 1, 

2009. 

Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1%. 

Leak rate of 0.1 gph with PD = 99.9% and PFA = 0.1%.

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 15,000 gallons. 

Tanks less than 95% full may be tested. 

Minimum product level required based on tank diameter is as follows: 

48" dia/min 12"; 

64" dia/min 14"; 

72"dia/min 15"; 

96" dia/min 17.5"; 

126"dia/min 21.5". 

For other tank diameters, see evaluation report.

Waiting Time Minimum of 6 hours 1 minute between delivery and testing for leak rate of 0.2 gph. 

Minimum of 5 hours 18 minutes between delivery and testing for leak rate of 0.1 

gph. 

None between dispensing and testing. 

There must be no delivery during waiting time

Test Period Length of the test is determined automatically based on quality of test data. 

Average data collection time during evaluation was 5 hours 10 minutes for leak rate 

of 0.2 gph. 

Average data collection time during evaluation was 5 hours 44 minutes for leak rate 

of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during the test.

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

120

DATA SHEET CONTINUED FROM PREVIOUS PAGE: EBW, Inc., AutoStik II, AutoStik Jr. 

(Magnetostrictive Probe)

Temperature Probe contains 5 thermistors to monitor product temperature. 

At least one thermistor must be submerged in product during testing.

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.208 inch. 

Minimum detectable water level change is 0.011 inch.

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

AutoStik Jr. can support up to 4 tanks. 

AutoStik II can support up to 8 tanks.

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Dates of Evaluation: 08/05/92, 09/05/97, 

Tel: (800) 225-9787 08/21/02 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

121

Issue Date: July 27, 2004 

Revision Date: April 6, 2010

Franklin Fueling Systems 

(originally listed as EBW, Inc.)

AutoStik II, AutoStik Jr. 

(INCON, EBW LL2 Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD 

As of April 1, 2009, Franklin Fueling Systems no longer manufactures this 

method.

Certification Applies only to AutoStik II and AutoStik Jr. models sold on March 1, 2004 to April 1, 

2009. 

Leak rate of 0.2 gph with PD = 95.7% and PFA = 4.3%.

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 30,000 gallons. 

Tanks less than 95% full may be tested. 

Minimum product level required based on tank diameter as follows: 

48" dia/min 12"; 

64" dia/min 14"; 

72"dia/min 15"; 

96" dia/min 17.5"; 

126"dia/min 21.5". 

For other diameters, see evaluation report.

Waiting Time Minimum of 4 hours 9 minute between delivery and testing. 

Minimum of 2 hours between dispensing and testing. 

There must be no delivery during waiting time.

Test Period The length of the test is determined automatically based on quality of test data. 

Average data collection time during the evaluation was 6 hours, 51 minutes. 

Test data is acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during the test.

Temperature Probe contains 5 thermistors to monitor product temperature. 

At least one thermistor must be submerged in product during testing.

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.208 inches. 

Minimum detectable water level change is 0.011 inch.

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

122

DATA SHEET CONTINUED FROM PREVIOUS PAGE: EBW, Inc., AutoStik II, AutoStik Jr. 

(INCON, EBW LL2 Magnetostrictive Probe)

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

This equipment was not evaluated using manifolded tanks. 

Tests only the portion of the tank containing product. 

As product level is lowered, the leak rate in a leaking tank decreases (due to lower 

head pressure). Consistent testing at low levels could allow a leak to remain 

undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

AutoStik Jr. can support up to 4 tanks. 

AutoStik II can support up to 8 tanks.

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Dates of Evaluation: 05/14/98, 08/21/02 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

123

Issue Date: November 22, 1995 

Revision Date: November 9, 2010

Franklin Fueling Systems

INCON T1 Series TS-750, TS-1000, TS-1001, TS-2000, TS-2001, 

INCON T5 Series, TS-5, TS-608, TS-550, TS-5000, 

Franklin Colibri CL6 & TS-CL6 Series 

(INCON Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.7% and PFA = 4.3%. 

Leak rate of 0.1 gph with PD = 99.9% and PFA = 0.1%.

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, biodiesel blends B6-B20 meeting ASTM 

D7647, biodiesel B100 meeting ASTM D6751*. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

*NWGLDE Listings apply to leak detection functionality only and not material 

compatibility – see “Disclaimer” on page ii. 

Tank Capacity Maximum of 30,000 gallons for leak rate of 0.2 gph. 

Maximum of 15,000 gallons for leak rate of 0.1 gph. 

Tanks less than 95% full may be tested. 

Minimum product level required based on tank diameter is as follows: 

48" dia/min 12"; 

64" dia/min 14"; 

72"dia/min 15"; 

96" dia/min 17.5"; 

126"dia/min 21.5". 

For other tank diameters, see evaluation report. 

Waiting Time Minimum of 4 hours 9 minutes between delivery and testing for leak rate of 0.2 gph. 

Minimum of 5 hours 18 minutes between delivery and testing for leak rate of 0.1 

gph. 

None between dispensing and testing. 

There must be no delivery during waiting time

Test Period Length of the test is determined automatically based on quality of test data. 

Average data collection time during evaluation was 6 hours, 51 minutes for leak rate 

of 0.2 gph. 

Average data collection time during evaluation was 5 hours 44 minutes for leak rate 

of 0.1 gph. 

Test data is acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during the test.

Temperature Probe contains 5 thermistors to monitor product temperature. 

At least one thermistor must be submerged in product during testing.
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

124

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

125

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Franklin Fueling Systems, INCON T1 

Series TS-750, TS-1000, TS-1001, TS 2000, TS-2001, INCON T5 Series, TS-5, TS-608, TS-550, 

TS-5000, Franklin Colibri CL6 & TS-CL6 Series (INCON Magnetostrictive Probe) 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.208 inch. 

Minimum detectable water level change is 0.011 inch.

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

TS-1000 and TS-1001 can support up to 4 tanks. 

TS-2001 can support up to 8 tanks. 

TS-5 can support up to 12 tanks. 

TS-608 can support up to 8 tanks. 

TS-550 and TS-5000 can support up to 72 tanks. 

Colbri CL6 and TS-CL6 can support up to 6 tanks. 

TS-750 can support up to 4 tanks, but does not provide fuel logistics, remote 

monitoring and other business management options available with TS-1000, TS-1001 

and TS-2001.

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Dates of Evaluation: 08/05/92, 09/05/97, 05/14/98 

Tel: (800) 225-9787 08/21/02, 01/18/06, 08/18/09 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

126

Issue Date: November 22, 1995 

Revision Date: May 21, 2008

Franklin Fueling Systems 

(originally listed as INCON Intelligent Controls, Inc.)

TS 2000 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.5%. 

Leak 

Threshold

0.058 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 6 hours between delivery and testing. Minimum of 2 hours between dispensing 

and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 3 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 resistance temperature detectors 

(RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.04 inches. 

Minimum detectable water level change is 0.011 inch. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

TS 2000 can support up to 4 tanks. 

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 05/10/91 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

127

Issue Date: July 22, 2003 

Revision Date: November 9, 2010

Franklin Fueling Systems 

INCON T1 Series TS-750, TS-1000, TS-1001, TS-2000, TS-2001, 

INCON T5 Series TS-5 , TS-608, TS-550, TS-5000, 

Colibri CL6 & TS-CL6 Series with SCALD 2.0

(INCON TSP-LL2 Magnetostrictive Probe)

CONTINUOUS IN-TANK LEAK DETECTION METHOD 

(CONTINUOUS AUTOMATIC TANK GAUGING)

Certification Leak rate of 0.2 gph with PD > 99% and PFA < 1%. 

Leak 

Threshold

0.10 gph for single and manifolded tank systems. 

A tank system should not be declared tight and a message printed for the operator, if 

the test results indicate a loss or gain that exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, biodiesel blends B6-B20 meeting ASTM 

D7647, biodiesel B100 meeting ASTM D6751*. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

*NWGLDE Listings apply to leak detection functionality only and not material 

compatibility – see “Disclaimer” on page ii. 

Tank 

Capacity

Maximum of 49,336 gallons for single tanks and for all tanks manifolded together. 

Tank must be between 14 and 93.5% full. 

Throughput Monthly maximum of 257,818 gallons. 

Waiting Time None between delivery and data collection when difference between product in tank 

and product delivered is 6.0 degrees F or less. 

Test Period Data collection time ranges from 5 to 28 days. Data sampling frequency is > 1 per 

second. 

System collects data at naturally occurring product levels without interfering with 

normal tank operation, and discards data from unstable periods when system performs 

test. 

Temperature Average for product is determined by a minimum of 5 thermistors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.208 inch. 

Minimum detectable change in water level is 0.011 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions. 

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

128

DATA SHEET CONTINUED FROM PREVIOUS PAGE: INCON T1 Series TS-750, TS-1000, TS1001, TS-2000, TS-2001, INCON T5 Series TS-5 , TS-608, TS-550, TS-5000, Colibri CL6 & TSCL6 Series with SCALD 2.0 (INCON TSP-LL2 Magnetostrictive Probe) 

Comments System reports a result of “pass” or “fail”. 

Evaluated using both single and manifolded tank systems with probes in each tank. 

Tests only the portion of the tank containing product. 

As product level is lowered, the leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

TS 750, 1000 and 1001 can support up to 4 tanks. 

TS 2000 and 2001 can support up to 8 tanks. 

TS 5 can support up to 12 tanks. 

TS 608 can support up to 8 tanks. 

TS 550 and 5000 can support up to 48 tanks. 

Colibri CL6 and TS-CL6 can support up to 6 tanks 

TS 750 and 2000 do not provide fuel logistics, remote monitoring and other business 

management options available with TS 1000, 1001, and 2001. 

The database for evaluation of the system includes sites with vapor recovery and blending 

dispensers. 

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Dates of Evaluation: 07/11/2003, 03/18/06, 08/18/09 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

129
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

130

Issue Date: November 17, 2005 

Franklin Fueling Systems

Secondary Containment Monitoring (SCM) 

Incon TS-SCM and EBW AS-SCM

CONTINUOUS INTERSTITIAL TANK SYSTEM MONITORING METHOD (PRESSURE/VACUUM)

Certification: 

Certified as equivalent to European leak detection standard EN 13160-2, Part 2, as a Class I leak detection system. 

Operating Principle:

System uses vacuum generated by the turbine pump to continuously maintain a partial vacuum within the interstitial space 

of double-walled tanks and double-walled piping. 

System is designed to activate a visual and acoustic alarm, and optional turbine pump shutdown before stored product can 

escape to the environment. 

System is capable of detecting breaches in both the inner and outer walls of double-walled tanks and double-walled piping. 

Alarm Condition: 

System alarms when a liquid or air leak occurs which causes the interstitial vacuum to decrease (pressure to increase) and 

the system is unable to maintain minimum vacuum. 

System will also alarm if the interstitial vacuum level decreases at a rate exceeding manufacturer’s allowable values. 

Allowable values are based on an “AutoLearn line leak algorithm.” The unit will record two curves (up curve and down 

curve) while a calibrated leak orifice is connected to the interstitial space being monitored. The “up” curve is learned while 

the vacuum pump is on and evacuating the interstice. The “down” curve is learned when the vacuum pump is off and 

interstitial vacuum is decaying. During normal operation when the vacuum level is between the upper and lower limits, the 

system is continuously comparing vacuum decay rates to the learned curves stored in memory. 

Applicability:

Underground double-walled tank, connected double-walled piping, and other connected interstitial spaces storing gasoline, 

gasohol, diesel, heating oil #2, kerosene, aviation fuel, motor oil, water. 

EN13160-2 requires the use of separate monitoring systems for separate USTs. 

Manufacturer’s Specifications: 

Alarm will activate when interstitial vacuum decreases to approximately 1 psi vacuum (approx. 2”Hg). 

Normal operating vacuum for the system is between 2”Hg and 6”Hg. 

System does not restrict the vacuum source to 85±15 liters/hour flow rate at the “Alarm On” vacuum level. 

Volume of monitored interstitial space must not exceed 8 m3

 (2114 gal) for tanks and 10 m3 (2642 gal) for piping. 

When monitoring double-walled tanks, the system does not require a liquid stop valve, a condensate trap or liquid 

sensors. Since the vacuum line is connected to the pump siphon port, any liquid in the vacuum line will be returned to 

the tank. Suction line must be located at lowest point of interstitial space. 

Calibration: 

Functional and operational safety tests should be performed in accordance with manufacturer’s instructions. 

Initial calibration with known leak is performed at system installation, using an orifice supplied by the manufacturer. 

Comments:

Interstitial space is tested continuously. 

Vacuum source is the submerged turbine pump siphon port. 

Presence of a water table above the leak point will allow water to enter the interstice rather than air or vapor. The water 

would be detected in the same manner as fuel. 

This system may not be compatible with all secondarily contained tanks and/or piping. Always consult with the tank and/or 

piping manufacturer and the manufacturer’s applicable recommended installation practices before installing this system, or 

damage may be caused to the tank or piping by its use.

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 11/11/04 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

131

Issue Date: September 29, 2010 

Revision Date: November 23, 2010

Franklin Fueling Systems

TS-LS500, TS-LS500E Series with ST and LT SLLD

(for Rigid and/or Flexible Pipelines)

CONTINUOUS PRESSURIZED PIPING LEAK DETECTION METHOD

Certification Leak rate of 0.2 gph at operating pressure with PD = 99.9% and PFA = <0.1%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified using an 

equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak Threshold 0.08 gph for leak rate of 0.2 gph. 

Although the system reports a quantitative leak rate internally, it only reports a pass or fail to the tank 

system operator. 

Applicability Gasoline, diesel, aviation fuel, biodiesel B6-B20 meeting ASTM D7647, biodiesel B100 meeting ASTM 

D6751*. Other liquids may be tested after consultation with the manufacturer. 

*NWGLDE Listings apply to leak detection functionality only and not material compatibility – see “Disclaimer” 

on page ii.

Specification System tests pressurized rigid, flexible, or combination rigid and flexible pipelines. 

Tests are conducted at operating pressure by statistically adding increments of stable testing until a test 

has enough data to be completed. 

Pipeline 

Capacity

Maximum of 312.2 gallons for steel and fiberglass pipelines (examples: 480 feet of 4 inch line; 671 feet 

of 3 3/8 inch line ). 

Maximum of 95.4 gallons for flexible pipelines (examples: 260 feet of 3 inch line; 1040 feet of 1 1⁄2 inch 

line). 

Maximum of 415.8 gallons for combination rigid and flexible pipelines (the capacity of the flexible 

component cannot exceed 95.4 gallons). 

Throughput Monthly maximum of 391,250 gallons. 

Waiting Time Less than 3 hours to begin data collection. 

Test Period Test data records may cover 10 days for ST(short term) CPPLDS to 30 days for LT(long term) 

CPPLDS dependent on dispensing, with an average of 16.22 days. 

The ST array continuously contains 10 days of data, and the LT array continuously contains 30 days of 

data that are rolled over as additional data is acquired. 

Precedence is given to the ALLD test, if present. If not present, it defaults to SLLD and 

prints the ST result. 

It will only print the LT report if there is no ST test available for the month. 

Test data are acquired and recorded by a microprocessor. 

System 

Features

Permanent installation of leak detector on pipeline and software upgrade to the monitor. 

The SLLD (Statistical Line Leak Detection) is an added capability for the TS-LS500 and TSLS500E Automatic Line Leak Detector (ALLD). The ALLD still performs the 3.0 gph tests, 

and with enough quiet time, the 0.2 gph and 0.1 gph tests; the SLLD is only used for 0.2 

gph leak detection if the ALLD did not have enough quiet time to perform that test. 

Pump shutdown, indicator light and alarm activation if leak is declared for 3.0 gph and 0.2 gph tests. 

The TS-LS500E series is an explosion proof version of the original TS-LS500 series. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 05/10/10 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

132

Issue Date: April 18, 1997 

Revision Date: November 3, 2010

Franklin Fueling Systems 

(originally listed as Beaudreau Electric, Inc.)

Model FFS 404-4 Controller with Models S404 and S406 Liquid Level Sensors 

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch (Model S404) 

refractive index of liquids (Model S406) 

Test Results:

Model S404 Liquid Level 

Sensor 

unleaded 

gasoline diesel water

Detection time (sec) <1 <1 <1 

Fall time manual reset manual reset manual reset 

Precision (in) 0.0124 0.0167 0.0067 

Lower detection limit (in) 0.89 0.72 0.68 

Model S406 Liquid Level 

Sensor 

Detection time (sec) <1 <1 <1 

Fall time manual reset manual reset manual reset 

Precision - standard deviation (in) 0.003474 0.001923 0.005329 

Lower detection limit (in) 0.357 0.321 0.369 

Specificity Results:

Manufacturer and evaluator claim sensors will respond to any liquid. No additional materials tested. 

Manufacturer’s Specifications: 

Manufacturer states that systems require no calibration. 

Annual functional test required. 

Comments: 

Sensors are reusable. 

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 07/20/94 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

133

Issue Date: April 18, 1997 

Revision Date: June 20, 2008

Franklin Fueling Systems 

(originally listed as INCON Intelligent Controls, Inc.)

Tank Sentinel TS-1000EFI, TS-1001/TS-2001, and TS-5xxx Series with TSP-DIS 

BriteSensor; Tank Sentinel TS-1000/TS-2000, TS-1001/TS-2001, and TS-5xxx Series with 

TSP-EIS Standard Sensor; Tank Sentinel TS-1000/TS-2000 with TSP-PS Liquid Contact 

Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: opto-electric 

Test Results:

unleaded synthetic diesel heating 

TSP-DIS BriteSensor gasoline gasoline fuel oil #2 water

Detection time (min:sec) 03:13 03:17 3:00 3:02 03:18 

Fall time (min) <1 <1 <1 <1 <1 

Product activation height (cm) 1.60 N/D* N/D N/D 1.92 

Lower Detection Limit (cm) 1.60 1.60 1.50 1.50 1.62 

TSP-EIS Standard Sensor 

Detection time (min:sec) 03:01 03:17 3:00 3:02 03:07 

Fall time (min) <1 <1 <1 <1 <1 

Product activation height (cm) 1.50 N/D N/D N/D N/D 

Lower Detection Limit (cm) 1.50 1.60 1.50 1.50 1.50 

TSP-PS Liquid Contact Sensor 

Detection time (min:sec) 01:14 01:13 01:10 01:16 01:25 

Fall time (min) <1 <1 <1 <1 <1 

Product activation height (cm) 1.37 N/D N/D N/D N/D 

Lower Detection Limit (cm) 1.22 1.21 1.20 1.24 1.32 

* See glossary. 

Comments: 

Comparison of Tank Sentinel TS-1001/TS-2001 and TS-5xxx series consoles with Tank Sentinel 

TS-1000(including EFI)/TS-2000 series consoles showed comparable results when evaluated with 

representative sensors.

Sensors are reusable. 

Franklin Fueling Systems Evaluator: Carnegie Mellon Research Institute 

3760 Marsh Road Tel: (412) 268-3495 

Madison, WI 53718 Dates of Evaluation: 12/09/94, 01/30/96, 

Tel: (800) 225-9787 07/02/93 

E-mail: info@franklinfueling.com Evaluator: Ken Wilcox Associates 

URL: www.franklinfueling.com Tel: (816) 443-2494 

Date of Evaluation: 4/1/08 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

134

Issue Date: April 18, 1997 

Revision Date: December 30, 2010

Franklin Fueling Systems 

(originally listed as INCON Intelligent Controls, Inc.)

Tank Sentinel TS-1000EFI , TS-1001/TS-2001, and TS-5xxx Series with TSP-HIS 

BriteSensor; Tank Sentinel TS-1000/TS-2000, TS-1001/TS-2001, and TS-5xxx Series with 

TSP-HLS Standard Sensor, TSP-ULS, and TSP-UHS Standard Sensors 

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: magnetic switch 

Test Results: 

TSP-HIS BriteSensor 

50% by weight 

ethylene glycol in water

30% by weight 

calcium chloride in water

high* low* high low

Response time (min:sec) 17:41 16:47 17:28 16:56 

Recovery time (min) <1 <1 <1 <1 

Product activation height (cm) 19.56 2.53 19.40 2.50 

TSP-HLS Standard Sensor 

unleaded 

gasoline

synthetic 

gasoline diesel***

heating oil 

#2 water

Detection time (min:sec) 10:09 10:14 09:55 10:25 09:25 

Fall time (min) <1 <1 <1 <1 <1 

Product activation height (cm) 5.64 N/D** N/D N/D N/D 

Lower detection limit (cm) 5.03 5.03 4.93 5.17 4.77 

TSP-ULS Standard Sensor 

Detection time (min:sec) 03:50 03:49 03:50 03:41 03:34 

Fall time (min) <1 <1 <1 <1 <1 

Product activation height (cm) 2.70 N/D N/D N/D N/D 

Lower detection limit (cm) 1.93 1.97 1.93 1.80 1.80 

TSP-UHS Standard Sensor 

Detection time (min:sec) 03:50 03:49 03:50 03:41 03:34 

Fall time (min) <1 <1 <1 <1 <1 

Product activation height (cm) 2.70 N/D N/D N/D N/D 

Lower detection limit (cm) 1.93 1.97 1.93 1.80 1.80 

*The "high" and "low" refer to high and low level alarm points of hydrostatic sensors. 

** See glossary. 

***This evaluation determined the sensor’s responses to the liquids shown above. Biodiesel blends B6-B20 meeting ASTM D7647 

and biodiesel B100 meeting ASTM D6751 would also produce an alarm if the sensor threshold is exceeded. Responses to these 

fuels were not determined, but would be expected to be very similar to the diesel responses. 

Comments: 

TSP-HIS BriteSensor is intended to monitor level of either ethylene glycol or calcium chloride solutions in interstitial or annular 

space of a double-walled tank. Activates if any significant gain or loss of solution occurs. 

Comparison of Tank Sentinel TS-1001/TS-2001 and TS-5xxx series consoles with Tank Sentinel TS-1000 

(including EFI)/TS-2000 series consoles showed comparable results when evaluated with representative sensors. 

TSP-UHS is the same as the TSP-ULS sensor except that the float has been inverted so that it may be used to monitor the brine 

reservoir of containment sumps. An alarm condition will occur when the fluid level drops below the end of the sensor. 

Sensors are reusable. 

Franklin Fueling Systems Evaluator: Carnegie Mellon Research Institute 

3760 Marsh Road Tel: (412) 268-3495 

Madison, WI 53718 Date of Evaluations: 03/20/95, 01/30/96 

Tel: (800) 225-9787 Evaluator: Ken Wilcox Associates 

E-mail: info@franklinfueling.com Tel: (816) 443-2494 

URL: www.franklinfueling.com Date of Evaluation: 4/1/08 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

135

Issue Date: February 11, 2009 

Revision Date: December 30, 2010

Franklin Fueling Systems

Tank Sentinel TS-5xxx Series with TSP-DMS 12 and 24 Inch Discriminating 

Magnetostrictive Sensors

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: Magnetostrictive probe with dual floats 

Test Results: 

TSP-DMS 12 Inch and 24 Inch 

Discriminating Sensor 

unleaded 

gasoline diesel* water

Detection time (min) <1 <1 <1 

Fall time (min) <1 <1 <1 

Average product activation height (in) 1.97 1.86 1.54 

Minimum detectable level (in) 1.98 1.87 1.55 

*This evaluation determined the sensor’s responses to the liquids shown above. Biodiesel blends B6-

B20 meeting ASTM D7647 and biodiesel B100 meeting ASTM D6751 would also produce an alarm if the 

sensor threshold is exceeded. Responses to these fuels were not determined, but would be expected 

to be very similar to the diesel responses.

Comments: 

These sensors were evaluated for use with the TS-5xxx series consoles only. 

Sensors are reusable. 

Franklin Fueling Systems Evaluator: Ken Wilcox Associates 

3760 Marsh Road Tel: (816) 443-2494 

Madison, WI 53718 Date of Evaluation: 7/16/08 

Tel: (800) 225-9787 

E-mail: info@franklinfueling.com 

URL: www.franklinfueling.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

136

Issue Date: April 18, 1997 

Revision Date: June 20, 2008

Franklin Fueling Systems 

(originally listed as INCON Intelligent Controls, Inc.)

Tank Sentinel TS-1000EFI, TS-1001/TS-2001, and TS-5xxx Series with 

TSP-DDS BriteSensor, TSP-DTS BriteSensor, TSP-MWS BriteSensor Groundwater Probe

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: magnetic switch and float (TSP-DDS, TSP-DTS BriteSensor), and hydrocarbon 

sensitive polymer (all) 

Test Results:

TSP-DDS BriteSensor 

unleaded 

gasoline

synthetic 

gasoline diesel

heating 

oil #2

water 

low level

water 

high level

Detection time (min:sec) 05:35 06:00 38:43 38:16 06:02 06:09 

Fall time (min:sec) 34:27 28:53 > 60:00 > 60:00 <01:00 <01:00 

Lower detection limits (cm) 

 Product activation height 0.50 N/D* 3.16 N/D N/D N/D 

 Product thickness on water 0.04 N/D N/D N/D N/D N/D 

TSP-DTS BriteSensor 

Detection time (min:sec) 06:02 05:59 38:43 38:16 06:02 06:13 

Fall time (min:sec) 22:28 28:53 <01:00 <01:00 > 60:00 > 60:00 

Lower detection limits (cm) 

 Product activation height 0.50 N/D 3.16 N/D N/D N/D 

 Product thickness on water 0.04 N/D N/D N/D N/D N/D 

TSP-MWS BriteSensor 

Groundwater Probe 

Detection time (min:sec) 10:13 06:42 

Fall time (min:sec) 26:52 14:43 

Lower detection limit (cm) 

 Product thickness on water 0.04 0.04 

* See glossary. 

Specificity Results (additional for TSP-MWS BriteSensor Groundwater Probe): 

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s). 

Comments: 

Comparison of Tank Sentinel TS-1001/TS-2001 and TS-5xxx series consoles with Tank Sentinel 

TS-1000(including EFI)//TS-2000 series consoles showed comparable results when evaluated with 

representative sensors. 

Sensors are reusable. 

Franklin Fueling Systems Evaluator: Carnegie Mellon Research Institute 

3760 Marsh Road Tel: (412) 268-3495 

Madison, WI 53718 Dates of Evaluations: 12/09/94, 02/19/96 

Tel: (800) 225-9787 Evaluator: Ken Wilcox Associates 

E-mail: info@franklinfueling.com Tel: (816) 443-2494 

URL: www.franklinfueling.com Date of Evaluation: 4/1/08 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

137

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

Gasboy International 

(originally evaluated under William M. Wilson's Sons)

Gasboy TMS 500 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.1% and PFA = 0.09%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 6 hours between delivery and testing. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 3 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 resistance sensors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.04 inch. 

Minimum detectable change in water level is 0.011 inch. 

Calibration Temperature sensors and probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

System is no longer being manufactured although product support is still available. 

Gasboy International Evaluator: Ken Wilcox Associates 

P.O. Box 22087 Tel: (816) 443-2494 

7300 West Friendly Avenue Date of Evaluation: 05/10/91 

Greensboro, NC 27420 

Tel: (336) 547-5000 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

138

Issue Date: September 11, 1998 

Revision Date: June 5, 2002 

Gems Sensors, Inc. 

(originally listed as Warrick Controls, Inc.)

DMS-47X-X-X(-X), DMS-57X-X-X(-X) Monitoring Panels with 

Models DLP-1-NC, DLP-2-NC, DLP-2-NO Sensors

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch 

Test Results:

unleaded gasoline diesel water

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Threshold (in)* ≤1.54 ≤1.50 ≤1.43 

 Precision (in)* ≤0.004 ≤0.005 ≤0.007 

*Results for threshold and precision varied slightly for each sensor; see evaluation for details. 

Comments:

Sensors are reuseable. 

Gems Sensors Inc. Evaluator: Ken Wilcox Associates 

1 Cowles Rd. Tel: (816) 443-2494 

Plainville, CT 06062-1198 Date of Evaluation: 12/01/97 

Tel: (800) 378-1600 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

139

Issue Date: April 18, 1997 

Revision Date: June 5, 2002 

Gems Sensors, Inc. 

(originally listed as Warrick Controls, Inc.)

Model DFP-25 Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: product solubility 

Test Results:

unleaded gasoline diesel water

Detection time (hr:min:sec) 0:06:50 4:14:40 N/A 

Fall time** N/A* N/A N/A 

Lower detection limit (cm) ≤2.54 ≤2.54 N/A 

* See glossary. 

**Fall time is not applicable, since sensor must be replaced after activating. 

Specificity Results:

Activated: Evaluator claims that this sensor will respond to any material that is capable of dissolving 

the hydrocarbon-sensitive wax.

Not Activated: Water. 

Comments:

Sensor is activated when hydrocarbon-sensitive wax is dissolved, releasing a spring that activates an 

alarm. 

Sensor is not reusable, and must be replaced after contact with hydrocarbons. 

Liquid level was set at 1 inch (2.54 cm) during test. 

Gems Sensors Inc. Evaluator: Ken Wilcox Associates 

1 Cowles Rd. Tel: (816) 443-2494 

Plainville, CT 06062-1198 Date of Evaluation: 11/18/96 

Tel: (800) 378-1600 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

140

Issue Date: November 22, 1995 

Revision Date: November 14, 1997

Gems Sensors, Inc. 

(originally listed as IMO Industries, Inc.)

Gems Smartwell Portable Monitor Model WPM-535 with Groundwater Probe Model WP-535

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector:

Output type: qualitative 

Sampling frequency: intermittent 

Operating principle: conductive polymer 

Test Results:

unleaded gasoline synthetic gasoline

Detection time (min:sec) 09:31 07:05 

Fall time (min:sec) 55:42 17:04 

Lower detection limit (cm) 0.04 0.08 

Specificity Results (in addition to above):

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s). 

Comments: 

Sampling frequency is designated as "intermittent" because polymer strip is permanently mounted in 

monitoring well, while monitor is a hand held unit which is periodically connected to sensor. 

Sensors are reusable. 

Gems Sensors Inc. Evaluator: Carnegie Mellon Research Institute 

1 Cowles Rd. Tel: (412) 268-3495 

Plainville, CT 06062-1198 Date of Evaluation: 04/22/93 

Tel: (800) 378-1600 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

141

Issue Date: November 22, 1995 

Revision Date: June 5, 2002 

Gems Sensors, Inc. 

(originally listed as Warrick Controls, Inc.)

Model 5700 Meter with PVP-2 Sensor

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: quantitative 

Sampling frequency: continuous 

Operating principle: adsistor 

Test Results: 

unleaded gasoline synthetic gasoline JP-4 jet fuel

Accuracy (%) 25.4 -100.0 157.1 

Bias (%) 14.4 -100.0 108.3 

Precision (%) 7.6 N/D* 20.4 

Detection time (min) >60 N/A* >60 

Fall time (min) 38 N/A >60 

Lower detection limit 

(ppm) 

1353.3 N/D N/D 

* See glossary. 

Specificity Results:

Not Activated: n-hexane, toluene, xylene(s). 

Gems Sensors Inc. Evaluator: Carnegie Mellon Research Institute 

1 Cowles Rd. Tel: (412) 268-3495 

Plainville, CT 06062-1198 Date of Evaluation: 09/10/91 

Tel: (800) 378-1600 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

142

Issue Date: December 4, 2002 

Revision Date: March 7, 2006 

HansaConsult Ingenieurgesellschaft mbH

HansaConsult Pressure-Step Tightness Control System (TCS) Pipeline Leak Detection System 

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above)

Certification Leak rate of 0.004% of line volume (0.04 gph per 1000 gallons of product) in the pipeline 

segment being tested with PD > 95% and PFA < 5%. 

The USEPA has not set a minimum detectable leak rate for large diameter pipeline 

systems (airport hydrant systems) at the time of this evaluation. 

Leak 

Threshold

0.002% of line volume in gph. 

A pipeline system should not be declared tight if the test results indicate a loss that equals or 

exceeds the threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, solvents, waste oil. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests either single or double-walled fiberglass or steel piping. 

Pipeline 

Capacity

Minimum of 22,700 gallons, maximum of 175,110 gallons (range of pipelines evaluated). 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Minimum of 45 minutes after setup. 

Piping must be isolated and blocked during test. 

System 

Features

System may be permanently installed on pipeline to perform monitoring, or may be transported 

and set up to perform line tightness testing. 

A single 45 minute test is required to simultaneously test as many sections as required consisting 

of typically two 15-minute monitoring periods at operating pressure, and one 15-minute 

monitoring period at a lower pressure level. 

System measures change in pressure gradients and reports output quantity in gph, while 

compensating for thermal and pipeline “creeping” effects. 

If leak is declared, message is printed and alarm is automatically activated immediately after 

completion of test. 

Pipeline segment being tested must be completely isolated and have pressure controlled and 

maintained using a pressure relief valve. 

Calibration System must be calibrated in accordance with manufacturer’s instructions. 

Comments System may be used on large underground bulk pipelines such as airport hydrant fueling systems. 

Manufacturer claims system is applicable to any size of underground pressurized piping, typically 

between 3,000 and 500,000 gallons, especially underground pipelines and airport hydrant fueling 

systems. 

The third-party evaluation utilized a total of 306 tests. 16 of these tests were conducted on two 

lines with various induced leak rates. 

HC Fuel Systems LLC Evaluator: Ken Wilcox Associates 

P.O. Box 309 Tel: (816) 443-2494 

176 Places Mill Road Date of Evaluation: 08/11/00 

Alton, NH 03809 

Tel: (603) 879-0388 

jbirnie@hansaconsult.com 

www.hansaconsult.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

143

Issue Date: March 7, 2006

Hansa Consult of North America, LLC

HCNA Pipeline Leak Detection System, Version 2.0 

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above)

Certification Leak rate of 0.002% of line volume (0.02 gph per 1000 gallons of product) in the pipeline 

segment being tested with PD > 95% and PFA < 5%. 

The USEPA has not set a minimum detectable leak rate for large diameter 

pipeline systems (airport hydrant systems) at the time of this evaluation. 

Leak 

Threshold

0.001% of line volume in gph. 

A pipeline system should not be declared tight if the test results indicate a loss that equals 

or exceeds the threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, solvents, waste oil. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests either single or double-walled fiberglass or steel piping. 

Pipeline 

Capacity

Minimum of 3,000 gallons, maximum of 175,000 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Minimum of 45 minutes after setup. 

Piping must be isolated and blocked during test. 

System 

Features

System may be permanently installed on pipeline to perform monitoring, or may be 

transported and set up to perform line tightness testing. 

A single 45 minute test is required to simultaneously test as many sections as required 

consisting of typically two 15-minute monitoring periods at operating pressure, and one 15-

minute monitoring period at a lower pressure level. 

System measures change in pressure gradients and reports output quantity in gph, while 

compensating for thermal and pipeline “creeping” effects. 

If leak is declared, message is printed and alarm is automatically activated immediately after 

completion of test. 

Pipeline segment being tested must be completely isolated and have pressure controlled and 

maintained using a pressure relief valve. 

Calibration System must be calibrated in accordance with manufacturer’s instructions. 

Comments System may be used on large underground bulk pipelines such as airport hydrant fueling 

systems. 

Manufacturer claims system is applicable to any size of underground pressurized piping, 

typically between 3,000 and 500,000 gallons. 

The third-party evaluation utilized a total of 60 tests. 30 of these tests were conducted with 

various induced leak rates. 

Hansa Consult of North America, LLC (HCNA) Evaluator: Ken Wilcox Associates 

200 International Drive, Bldg. 120 Tel: (816) 443-2494 

Portsmouth, NH 03801 Date of Evaluation: 12/15/05 

Tel: (603) 422-8833 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

144

Issue Date: April 18, 1997 

Revision Date: January 11, 2001 

Hasstech

Tank Compliance Center, Model 700 

(7100 Series Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1%. 

Leak rate of 0.1 gph with PD = 99.6% and PFA = 0.4%. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density and where specific gravity is 

> 0.6 and viscosity is < 1500 cp may be tested after consultation with manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 2 hours between delivery and testing. Minimum of 2 hours between dispensing 

and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours for leak rate of 0.2 gph. 

Minimum of 6 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 thermistors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.186 inch. 

Minimum detectable change in water level is 0.0048 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

System no longer being manufactured and no support is available. 

Hasstech Evaluator: Ken Wilcox Associates 

out of business Tel: (816) 443-2494 

Date of Evaluation: 03/14/95 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

145

Issue Date: November 22, 1995 

Revision Date: January 11, 2001 

Hasstech

Leak Computer Tank Test System

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL)

Certification Leak rate of 0.1 gph with PD = 95% and PFA = 5%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 12,000 gallons. 

Tank must be minimum 100% full.

Waiting Time Test data are acquired and recorded by system's computer that calculates a leak rate 

every minute, and determines waiting time for satisfactory data (test is finished when 

the standard deviation of 30 sequential leak rates is less than half of the last leak rate 

determined). 

There must be no dispensing or delivery during waiting time.

Test Period Minimum of 1 hour, 10 minutes. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery of product during test.

Temperature Average for product is determined by a minimum of 7 thermistors.

Groundwater If depth to groundwater in tank excavation backfill cannot be determined, tank must 

pass a two level test with at least a 3 foot difference in product level. 

If depth to groundwater in tank excavation backfill can be determined, a single level 

test can be conducted provided a minimum net pressure of 1 psi exists at bottom of 

tank during test.

Calibration Level sensor must be calibrated before each test. 

Thermistors must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. 

Evaluated at EPA Edison Risk Reduction Engineering Laboratory prior to the EPA 

standard protocols being written. 

System no longer being manufactured and no support is available.

Hasstech Evaluator: U.S. EPA Risk Reduction 

out of business Engineering Laboratory 

Tel: (201) 321-6631 

Date of Evaluation: 11/88 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

146

Issue Date: November 22, 1995 

Revision Date: January 11, 2001 

Hasstech

Leak Computer Tank Test System

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL)

Certification Leak rate of 0.1 gph with PD > 99% and PFA < 1.0%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 15,000 gallons. 

Tank must be minimum 90% full.

Waiting Time Test data are acquired and recorded by system's computer that calculates a leak rate 

every minute, and determines waiting time for satisfactory data (test is finished when 

the standard deviation of 30 sequential leak rates is less than half of the last leak rate 

determined). 

There must be no dispensing or delivery during waiting time.

Test Period Minimum of 1 hour, 10 minutes. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a minimum of 7 thermistors.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a 

minimum net pressure of 1 psi at bottom of tank during test.

Calibration Level sensor must be calibrated before each test. 

Thermistors must be checked annually and, if necessary, calibrated in accordance 

with manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

System no longer being manufactured and no support is available. 

Hasstech Evaluator: Law Engineering Industrial Services 

out of business Tel: (800) 672-6601 

Date of Evaluation: 04/17/91 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

147

Issue Date: May 10, 2004 

Revision Date: September 7, 2006 

Hectronic GmbH 

Optilevel Electronic Level Gauge HLS 3010 HF 

(Capacitance Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.0% and PFA = 5.0%. 

Leak Threshold 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds 

this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Maximum of 20,000 gallons. 

Minimum product level required is 25% of the tank diameter. 

Waiting Time Minimum of 2 hours between delivery and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 20 hours. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a temperature-averaging probe. 

Temperature is measured by a resistance temperature detector (RTD). 

The RTD is mounted in a metal pipe that runs the length* of the probe allowing for temperature averaging. 

(*starts about 1 inch above the tip of the probe) 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.298 inch. 

Minimum detectable change in water level is 0.046 inch. 

Calibration The probe features 10 measurement segments (10 capacitance segments) and uses a comparison method 

(self calibration process) which allows the sensor to run without any external calibration. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

System consists of a capacitance probe, a micro processing unit inside the head of the probe, and a 

separate control panel to record and display test data. 

Probe was not tested with oxygenated fuels. However, manufacturer states that probe will work with these 

types of blended products. 

Probe is based on the capacitive comparison method. 

Product Level measurements taken by probe are not affected by liquid properties such as density or 

dielectric constant, electrical resistance, or surface turbulence. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains 

product. 

Hectronic GmbH Evaluator: Ken Wilcox Associates 

Tank und Parksysteme Tel: (816) 443-2494 

Allmendstrasse 15 Date of Evaluation: 04/06/04 

D-79848 Bonndorf, Germany 

Tel: +49 (0)7703 93 88 0 

E-mail: mail@hectronic.com 

URL: www.hectronic.com/en/ 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

148

Issue Date: September 7, 2006 

Hectronic GmbH

Hectronic Optilevel Dynamic Leak Detection System, Optilevel CITLDS 

(Capacitance Probe)

CONTINUOUS IN-TANK LEAK DETECTION METHOD

Certification Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1% for single tank systems. 

Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1% for manifolded tank systems. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Maximum of 11,869 gallons for single tank systems. 

Maximum of 23,778 gallons for manifolded tank systems. 

Minimum product level required is 14% of the tank diameter. 

Throughput Monthly Maximum of 126,923 gallons. Applies to single and manifolded tank systems. 

Waiting Time Minimum of 2 hours stabilization time is allowed between delivery and data collection. 

Test Period Average is 5.95 days. 

Data sampling frequency depends on tank activity. 

Temperature Average for product is determined by a temperature-averaging probe. 

Temperature is measured by a resistance temperature detector (RTD). 

The RTD is mounted in a metal pipe that runs the length* of the probe allowing for 

temperature averaging. 

(*starts about 1 inch above the tip of the probe) 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.298 inch. 

Minimum detectable change in water level is 0.046 inch. 

Calibration The probe features 10 measurement segments (10 capacitance segments) and uses a 

comparison method (self calibration process) which allows the sensor to run without 

any external calibration. 

Comments System consists of a capacitance probe, a micro processing unit inside the head of the 

probe, and a separate control panel to record and display test data. 

Probe was not tested with oxygenated fuels. However, manufacturer states that 

probe will work with these types of blended products. 

Tests only portion of tank containing product. 

Hectronic GmbH Evaluator: Ken Wilcox Associates 

Tank und Parksysteme Tel: (816) 443-2494 

Allmendstrasse 15 Date of Evaluation: 07/13/06 

D-79848 Bonndorf, Germany 

Tel: +49 (0)7703 93 88 0 

E-mail: mail@hectronic.com 

URL: www.hectronic.com/en/ 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

149

Issue Date: November 22, 1995 

Revision Date: March 3, 2009 

Horner Products, Inc.

SIR PRO 1 Versions 1.0, 2.0 

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUALITATIVE)

Horner Products is no longer in business. Support for this method may not be available.

Certification Leak rate of 0.2 gph with PD = 100% and PFA = 0% for Version 1.0. 

Leak rate of 0.1 gph with PD = 100% and PFA = 0% for Version 2.0.

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 18,000 gallons.

Data 

Requirement

Minimum of 30 days of product level and throughput data.

System 

Features

Method of data analysis that system employs, and was used during evaluation 

process, is exclusive of any external control by vendor. 

System consists of a fully automated software package with embedded algorithms for 

conducting leak detection testing. Consequently, third party evaluation procedure 

demonstrated that system can be used in-house with no requirement for direct vendor 

participation.

Evaluation 

Features

Evaluator tested this system for in-house use. 

Computer program disk along with instructional documentation was supplied by 

vendor to evaluator. 

Evaluator, without vendor involvement, analyzed required data and performed 

evaluation using program disk and accompanying documentation. 

Vendor was present as an observer during evaluation.

Comments Not evaluated using data from manifolded tanks. 

Of 120 data sets submitted for evaluation, 10 were inconclusive for Version 1. 

Of 120 data sets submitted for evaluation, 9 were inconclusive for Version 2. 

Median monthly throughput of tanks evaluated was 13,640 gallons for Version 1. 

Median monthly throughput of tanks evaluated was 11,828 gallons for Version 2. 

Leak rate of 0.2 gph was used in evaluation for Version 1. 

Leak rate of 0.1 gph was used in evaluation for Version 2. 

Data sets evaluated were supplied by evaluator.

Manufacturer’s Previously Listed Contact Evaluator: Petro Works 

Information is No Longer Valid. Tel: (913) 681-9379 

Date of Evaluation: 04/07/93 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

150

Issue Date: April 18, 1997 

Revision Date: March 3, 2009 

Horner Products, Inc.

SIR PRO 1 Versions 3.0 

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Horner Products is no longer in business. Support for this method may not be available.

Certification Leak rate of 0.2 gph with PD > 99.9% and PFA < 0.1% for leak threshold of 0.1 gph. 

Leak rate of 0.2 gph with PD > 97.2% and PFA < 0.1% for leak threshold of 0.16 

gph.

Leak 

Threshold

0.1 and 0.16 gph for leak rate of 0.2 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 45,000 gallons for single tanks. 

Maximum of 45,000 gallons cumulative capacity for manifolded tank systems with no 

more than 4 tanks in system.

Data 

Requirement

Minimum of 23 days of product level and throughput data.

System 

Features

Method of data analysis that system employs, and was used during evaluation 

process, is exclusive of any external control by vendor. 

System consists of a fully automated software package with embedded algorithms for 

conducting leak detection testing. Consequently, third party evaluation procedure 

demonstrated that system can be used in-house with no requirement for direct vendor 

participation.

Evaluation 

Features

This system was tested for in-house use. Vendor, with evaluator present, analyzed 

required data and performed evaluation using program disk only. 

Results were presented to evaluator directly from the computer without additional 

vendor involvement.

Comments 73% of data sets were from manifolded tank systems. 

Of 41 data sets submitted for evaluation, 4 were inconclusive. 

Median monthly throughput of tanks evaluated was 22,370 gallons. 

Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation. 

Data sets evaluated were supplied by evaluator.

Manufacturer’s Previously Listed Contact Evaluator: Ken Wilcox Associates 

Information is No Longer Valid. Tel: (816) 443-2494 

Date of Evaluation: 04/07/93, 07/18/95, 

06/16/00 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

151

Issue Date: April 18, 1997 

Revision Date: March 3, 2009 

Horner Products, Inc.

SIR PRO 1 Versions 4.0 

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Horner Products is no longer in business. Support for this method may not be available.

Certification Leak rate of 0.1 gph with PD = 98% and PFA = 2%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 33,000 gallons for single tanks. 

Size limits using an acceptable protocol for manifolded tank systems have not been 

determined.

Data 

Requirement

Minimum of 30 days of product level and throughput data.

Comments Not evaluated for manifolded tank systems using an acceptable protocol. 

73% of data sets were from manifolded tank systems. 

Of 41 data sets submitted for evaluation, 4 were inconclusive. 

Median monthly throughput of tanks evaluated was 22,370 gallons. 

Leak rates ranging from 0.05 to 0.216 gph were used in evaluation. 

Data sets evaluated were supplied by evaluator.

Manufacturer’s Previously Listed Contact Evaluator: Ken Wilcox Associates 

Information is No Longer Valid. Tel: (816) 443-2494 

Date of Evaluation: 07/18/95 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

152

Issue Date: September 11, 1998 

Revision Date: February 16, 2005 

HT Technologies, Inc.

Vakumatik Models V 60, V 70 Ex

CONTINUOUS INTERSTITIAL TANK SYSTEM MONITORING METHOD (PRESSURE/VACUUM)

Certification Leak rate of 0.1 gph with PD =100% and PFA =0%.

Leak 

Threshold

System alarms when liquid enters interstitial space and vacuum decreases (pressure 

increases) above 34 millibars.

Applicability Gasoline, diesel. 

Other liquids may be tested, which are compatible with flexible liner, after 

consultation with the manufacturer.

Tank Capacity Maximum of 20,000 gallons based on interstitial volume resulting when flexible liner is 

properly fitted and held in position against rigid tank wall. No minimum product level 

during test.

Waiting Time None between delivery and testing.

Test Period Minimum of 120 hours.

Comments System tests the interstitial space between a properly fitted and installed flexible liner 

inside a rigid tank, or between the rigid walls of a double-walled tank. 

Flexible liner is held in position by maintaining a vacuum on interstitial space. 

Interstitial space is tested continuously. 

System allows for permeation of vapor from stored substance into interstitial space. 

Vapor discharged from vacuum pump must meet applicable air quality standards. 

System detects breaches in either flexible internal liner or rigid tank walls. 

Reasonable temperature variations will not cause an alarm or missed detection. 

This system may not be compatible with all secondarily contained tanks and/or piping. 

Always consult with the tank and/or piping manufacturer and the manufacturer’s 

applicable recommended installation practices before installing this system, or 

damage may be caused to the tank or piping by its use.

HT Technologies Evaluator: Ken Wilcox Associates 

4360 Brownsboro Rd. Tel: (816) 443-2494 

Louisville, KY 40207 Dates of Evaluation: 08/17/97, 01/28/98 

Tel: (888) 287-9595 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

153

Issue Date: November 22, 1995 

Revision Date: November 6, 1997 

Ibex Industries

Ibex Precision Test System

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL)

Certification Leak rate of 0.1 gph with PD = 99.5% and PFA = 0.5%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 18,000 gallons. 

Tank must be between 92 and 100% full.

Waiting Time Minimum of 12 hours between delivery and testing. 

Minimum of 3 hours between "topping off" and testing. 

There must be no product dispensing or delivery during waiting time.

Test Period Minimum of 1 hour. 

Test data are acquired and recorded by system's computer. Leak rate is calculated 

from data determined valid by statistical analysis. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a minimum of 6 temperature sensors.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide 

net pressure of 2-4 psi on bottom of tank during test.

Calibration Level sensors must be calibrated in accordance with manufacturer's instructions 

before each test. Temperature sensors must be calibrated in accordance with 

manufacturer's instructions semi-annually.

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product.

Ibex Industries Evaluator: Applied Research Center 

Moved and left no forwarding address Tel: (805) 664-2173 

or phone number. Date of Evaluation: 01/18/91 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

154

Issue Date: November 22, 1995 

Revision Date: September 11, 1998 

Keekor Environmental Products

TankTite Leak Detection Kernel Version 1.0 with Keeprobe K7 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.4% and PFA = 4.6%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation 

with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 90% full. 

Waiting Time Minimum of 8 hours, 6 minutes between delivery and testing. 

Minimum of 15 minutes after a maximum dispensing rate of 50 gallons per minute. 

There must be no delivery during waiting time. 

Test Period Minimum of 3 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated as the average of subsets of all data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 resistance temperature detectors (RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.41 inch. 

Minimum detectable water level change is 0.0013 inch. 

Calibration Execution of Probe 

Check diagnostic routine is recommended prior to leak detect tests to ensure sensor is fully 

operational and in calibration. 

Annual preventative maintenance should be performed in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

Keekor Environmental Products Evaluator: Arizona State University 

P.O. Box 14830 Tel: (602) 965-3185 

Scottsdale, AZ 85267 Date of Evaluation: 10/25/94 

Tel: (602) 443-0001 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

155

Issue Date: April 27, 2006 

L & J Engineering, Inc. 

MCG 1100/MCG 8100 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.5% and PFA < 0.5%. 

Leak rate of 0.1 gph with PD = 96.9% and PFA = 3.1%. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph.

A tank system should not be declared tight if the test result indicates a loss or gain which equals 

or exceeds the applicable threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficient of expansion and density may be tested after consultation 

with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 4 hours between delivery and testing. 

Test Period Minimum of 5 hours 

Test data are acquired by and recorded by system’s computer. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 resistance temperature detectors (RTD’s). 

Sensors located above the liquid level are electronically removed from the data analysis. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.1 inches. 

Minimum detectable water level change is 0.015 inch. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with manufacturer’s 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank which routinely contains 

product. 

L & J Engineering Evaluator: Ken Wilcox Associates 

5911 Butterfield Road Tel: (816) 443-2494 

Hillside, IL 60162 Date of Evaluation: 09/01/92 

Tel: (708) 236-6000. 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

156

Issue Date: November 22, 1995 

Revision Date: November 6, 1997 

Leak Detection Systems, Inc.

Tank Auditor, Version RTD V.2.16

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL)

Certification Leak rate of 0.1 gph with PD = 99.98% and PFA = 0.02%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold, except as noted below. 

If using two level testing, the level is changed by 3 feet between the two tests and a 

tank system should not be declared tight if the net change between the two tests is 

greater than 0.02 gph.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 15,000 gallons. 

Tank must be minimum 100% full.

Waiting Time Minimum is variable depending on site conditions, but not be less than 6 hours 

between delivery and testing. 

Minimum of 1 hour between "topping off" and testing. 

There must be no dispensing or delivery during waiting time.

Test Period Minimum of 1 hour. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a temperature averaging probe.

Groundwater If depth to groundwater cannot be determined, two tests must be performed with a 

level change of at least 3 feet between tests. 

If depth to groundwater in tank excavation backfill can be determined and it is above 

bottom of the tank, product level must be adjusted to provide height differential of 3 

feet between product and groundwater in tank excavation backfill during test.

Calibration Temperature averaging probe and level sensors must be calibrated in accordance with 

manufacturer's instructions before each test.

Comments Not evaluated using manifolded tank systems. 

Evaluation of system did not include a field evaluation of groundwater compensation 

by two level testing.

Leak Detection Systems, Inc. Evaluator: Ken Wilcox Associates 

106 Longwater Dr. Tel: (816) 443-2494 

Norwell, MA 02061 Date of Evaluation: 11/29/91 

Tel: (617) 878-7766 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

157

Issue Date: March 11, 2008 

Revision Date: October 17, 2008 

Leak Detection Technologies, LLC 

MDleak Enhanced Leak Detection Method

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (TRACER)

Certification Leak rate of 0.005 gph with PD = 97.6% and PFA = 0%

Leak 

Threshold

A tank system should not be declared tight when chemical marker is detected outside of 

the tank system.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, fuel oil #6, solvents, waste oil, liquefied 

petroleum gas, natural gas. 

Other fluids may be tested after completion of a compatibility evaluation by the 

manufacturer.

Tank 

Capacity

Not limited by capacity.

Waiting 

Time

Ranges from 5 to 31 days after chemical marker is added to the tank, when “Controlled 

Leak Points” are not used. 

The waiting period may be adjusted below this range when supported by “Controlled 

Leak Points” as described below.

Controlled 

Leak Points

A “Controlled Leak Point” is a port where chemical marker is injected directly into the soil 

surrounding the UST to determine the rate at which chemical marker moves. It can be 

used to demonstrate that the chemical marker will migrate through the soil to a detection 

point in a documented amount of time, as described in manufacturer’s procedures.

Chemical 

Marker 

Dosage

Dosage of chemical marker of either vapor, liquid or both, is based on factors including 

tank size, tank volume, frequency and volume of tank refills, and is determined according 

to manufacturer's procedures.

Soil 

Permeability

Soil present during the evaluation was sandy in texture, with water table 200 feet below 

the surface. 

Type of soil may have an impact on the migration of vapors. 

Whenever the chemical marker is used outside of the parameters of the evaluation, such 

as in frozen soil or tanks buried in clay where the clay could plug holes in the tank, 

“Controlled Leak Point(s)” must be used.

Sampling When sampling in backfill, radius of influence of each sampling port is a maximum 16 

feet. All tank surfaces must be within the zone of influence of a sampling port. 

Sampling can be taken within a vertical or horizontal sampling port. 

Sampling port installation and sample collection are conducted per EPA soil gas sampling 

guidance document SOP#2042.

Sample 

Analysis 

Two detectors were used during the evaluation: a helium detector with minimum 

detection level of 2 ppm He, and a gas chromatograph with minimum detection level of 

1-10 picograms. Other analytical equipment with equivalent performance capabilities 

may also be used. 

DATA SHEET CONTINUED ON NEXT PAGE
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

158

DATA SHEET CONTINUED FROM PREVIOUS PAGE: MDleak Enhanced Leak Detection 

Method 

Groundwater The method was not evaluated with groundwater above the bottom of the tank. 

Depth to groundwater in tank excavation backfill must be determined. 

When the interior hydrostatic pressure of the component* being tested is less than the 

exterior hydrostatic pressure, the use of other test method(s) such as water ingress 

measurements must be incorporated. 

At the discretion of the regulatory agency, water ingress measuring devices may be 

used to supplement test method in high groundwater conditions. 

When the regulatory agency allows testing to be performed with groundwater above the 

bottom of tanks containing water based or water soluble products, the product must be 

removed from the tank prior to testing.

Comments *This method can be used to test single-walled components by sampling in backfill or to 

test the primary containment inside of secondary containment by sampling in the 

interstitial space. 

Samples are either analyzed on-site with a mobile laboratory or collected on-site and 

transported to the MDLeak laboratory for analysis. 

Evaluator indicates that the detectable leak rate can be adjusted by controlling test 

variables such as chemical marker concentration and test duration. 

Calibration of analytical instrumentation is verified daily per EPA published document 

SW-846, as referenced in the laboratory guidance document. 

Leak Detection Technologies, LLC Evaluator: Ken Wilcox Associates 

1400 East Paseo Pavon Tel: (816) 443-2494 

Tucson, AZ 85718 Date of Evaluation: 1/7/08 

Phone: (520) 207-4878 

E-mail: info@LeakDetect.net 

URL: www.leakdetect.net 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

159

Issue Date: January 19, 2006 

Leighton O’Brien Technologies Ltd. 

Monitor / Redone

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.1 gph with PD > 99.6% and PFA < 0.4% for both single and manifolded 

tank systems. 

"If a method meets the requirement for detecting a leak rate of 0.1 gph, it will meet 

the requirement for 0.2 gph.", according to "Standard Test Procedures for Evaluating 

Leak Detection Methods: Statistical Inventory Reconciliation Methods", EPA/530/UST90/007, June 1990, Section 7.2.3, page 30. 

Leak 

Threshold

0.05 gph. 

This leak threshold is for evaluation purposes only. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds the leak threshold calculated from the data set. This leak 

threshold may be different than the above leak thresholds. 

Applicability Gasoline, diesel, kerosene. 

Other more viscous liquids may be tested after consultation with the vendor. 

Tank Capacity Maximum of 33,675 gallons for single tanks. 

Maximum of 60,000 gallons cumulative capacity for manifolded tank systems with no 

more than 5 tanks in system. 

Data 

Requirement

Minimum of 26 days of product level and throughput data. 

Comments Inventory data for manifolded tank systems was prepared according to the EPA 

protocol and submitted to vendor for analysis. Single tank system inventory data was 

submitted by vendor to evaluator who adjusted data and returned to vendor for 

analysis. 

Water ingress or gains are evaluated on an individual basis by a certified SIR analyst. 

73% of data sets were from manifolded tank systems. 

Of 56 data sets submitted for evaluation, all were analyzed with conclusive results. 

Median monthly throughput of tanks evaluated was 18,459 gallons. 

Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation. 

Data is sent to a central location and analyzed by a certified SIR analyst. 

Leighton O’Brien Technologies Ltd. Evaluator: Ken Wilcox Associates 

Suite 1/96 Camberwell Rd. Tel: (816) 443-2494 

Hawthorn East, Victoria, Autralia 3123 Dates of Evaluation: 12/13/95, 12/15/05 

Tel: +61(03) 9813 5122 

E-mail: enquiry@leightonobrien.com 

URL: http://www.leightonobrien.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

160

Issue Date: November 23, 2010 

Leighton O’Brien Technologies Ltd. 

Quantitative Wet Line Test PM2 (for Rigid and Flexible Pipelines)

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 99.6% and PFA = 0.4%. 

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, biodiesel B6-B20 meeting ASTM D7647, 

biodiesel B100 meeting ASTM D6751*. 

Pipelines containing other liquids may be tested after approval from the manufacturer. 

*NWGLDE Listings apply to leak detection functionality only and not material 

compatibility – see “Disclaimer” on page ii. 

Specification System tests fiberglass, steel, and flexible pipelines. 

Wet Tests are conducted at 45 psi or 150% of operating pressure. 

Mechanical line leak detector must be removed or manually isolated from pipeline for 

duration of test, or if testing is to be conducted with mechanical line leak detector in 

place, check valve in pump must be manually closed. 

Pipeline 

Capacity

Maximum of 371.22 gallons in rigid piping. 

Maximum of 109.8 gallons in flexible piping. 

Maximum total of 481 gallons in combination rigid and flexible (the capacity of the 

flexible component cannot exceed 109.8 gallons). 

Manifolded piping may be tested as long as the total length of piping is within the 

capacity and configuration limitations. 

Waiting Time None between delivery and testing. 

Minimum of 27.5 minutes between dispensing and testing. 

Test Period Under ideal conditions, 17.25 minutes after installing in line. 

Test data is collected continuously and recorded by computer. 

Data is analyzed at the Leighton O’Brien analysis center with telemetry. 

Calibration No temperature sensors used. 

System must be calibrated yearly in accordance with manufacturer's instructions. 

Comments Groundwater is overcome with pressure on the system during the wet test. 

Leighton O’Brien Technologies Ltd. Evaluator: Ken Wilcox Associates 

Suite 1/96 Camberwell Rd. Tel: (816) 443-2494 

Hawthorn East, Victoria, Australia 3123 Dates of Evaluation: 10/11/10 

Tel: +61(03) 9813 5122 

E-mail: enquiry@leightonobrien.com 

URL: http://www.leightonobrien.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

161

Issue Date: November 23, 2010 

Leighton O’Brien Technologies Ltd. 

Qualitative Dry Line Test PM2 (for Rigid and Flexible Pipelines)

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

< 0.05 gph. Proprietary for dry test mode. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, Biodiesel B6-B20 biodiesel B6-B20 meeting 

ASTM D7647, biodiesel B100 meeting ASTM D6751*. 

Pipelines containing other liquids may be tested after approval from the manufacturer. 

Lines can be tested either empty or partially filled with liquid. 

*NWGLDE Listings apply to leak detection functionality only and not material 

compatibility – see “Disclaimer” on page ii. 

Specification System tests fiberglass, steel, and flexible pipelines. 

Dry Tests are conducted at 45 psi or 150% of operating pressure using the system as 

a digital manometer against the fluid and trapped vapor in the pipeline. 

Mechanical line leak detector must be removed or manually isolated from pipeline for 

duration of test, or if testing is to be conducted with mechanical line leak detector in 

place, check valve in pump must be manually closed. 

Pipeline 

Capacity

Maximum of 371.22 gallons in rigid piping. 

Maximum of 109.8 gallons in flexible piping. 

Maximum total of 481 gallons in combination rigid and flexible (the capacity of the 

flexible component cannot exceed 109.8 gallons). 

Manifolded piping may be tested as long as the total length of piping is within capacity 

and configuration limitations. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Under ideal conditions, 3 minutes after installing in line. 

Test data is collected continuously and recorded by computer. 

Data is analyzed at the Leighton O’Brien analysis center with telemetry. 

Calibration No temperature sensors used. 

System must be calibrated yearly in accordance with manufacturer's instructions. 

Comments Groundwater is overcome with pressure on the top of the fluid test system apparatus 

during the dry test. 

Leighton O’Brien Technologies Ltd. Evaluator: Ken Wilcox Associates 

Suite 1/96 Camberwell Rd. Tel: (816) 443-2494 

Hawthorn East, Victoria, Australia 3123 Dates of Evaluation: 10/11/10 

Tel: +61(03) 9813 5122 

E-mail: enquiry@leightonobrien.com 

URL: http://www.leightonobrien.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

162

Issue Date: November 22, 1995 

Revision Date: August 23, 1999 

Mallory Controls

Pollulert Probes MD221G/T, MD221G/TRA, MD241R, MD241RRA, MD241G, MD241GRA

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE) 

Mallory Controls no longer manufactures, services, or supports the use of this 

method.

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: electrical conductivity 

Test Results:

MD221G/T, 

MD221G/TRA* 

unleaded gasoline synthetic gasoline JP-4 jet fuel

Detection time (sec) 4 7 2 

Fall time (sec) 3 4 4 

Lower detection limit (cm) 0.08-0.32 0.08-0.32 0.08-0.32 

MD241R, MD241RRA, 

MD241G, MD241GRA** 

Detection time (sec) 2 2 1 

Fall time (sec) 1 2 2 

Lower detection limit (cm) 0.16-0.32 0.16-0.32 0.16-0.32 

*Evaluation was conducted using probe FD221G/TRA. 

**Evaluation was conducted using probe FD241R. 

Specificity Results (in addition to above): 

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s). 

Comments: 

According to manufacturer, probes beginning with "MD" have identical performance as older probes 

beginning with "FD." 

Sensors are reusable. 

Manufacturer’s Previously Listed Contact Evaluator: Radian Corp. 

Information is No Longer Valid. Tel: (512) 454-4797 

Date of Evaluation: 07/08/91 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

163

Issue Date: November 22, 1995 

Revision Date: April 18, 1997 

Mallory Controls

Pollulert Probes MD221V, MD221VRA, MD210V, MD210VRA

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE) 

Mallory Controls no longer manufactures, services, or supports the use of 

this method.

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: adsistor 

Test Results:

unleaded gasoline synthetic gasoline JP-4 jet fuel

Detection time (sec) 91 65 86 

Fall time (min:sec) 5:39 4:23 9:38 

Lower detection limit (ppm) 10 to 100 10 to 500 10 to 50 

Specificity Results (in addition to above):

Activated: toluene, xylene(s). 

Not Activated: n-hexane. 

Comments: 

Evaluation was conducted using probe FD221V. 

According to manufacturer, probes beginning with “MD” have identical performance as older probes 

beginning with “FD.” 

Manufacturer’s Previously Listed Contact Evaluator: Radian Corp. 

Information is No Longer Valid. Tel: (512) 454-4797 

Date of Evaluation: 07/08/91 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

164

Issue Date: April 22, 2008 

MassTech International, Ltd.

ML3P Line Leak Detection System

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. Other liquids may be tested after 

consultation with the manufacturer. 

Specification System tests fiberglass and steel pipelines. 

Where an electronic or mechanical line leak detector is installed in the system, a 

complete test includes but is not limited to data collection at ambient pressure and at 

pressures of 7.5, 15, and 22.5 psi. Where the line leak detector is removed from the 

system, a complete test includes but is not limited to data collection at ambient 

pressure and at a pressure of 22.5 psi. Additional data can be collected at pressures 

higher than 22.5 psi. 

Tests can be performed with trapped vapor in pipeline. 

Pipeline may be empty, partially full or full of product during testing. 

Pipeline 

Capacity

Maximum of 172 gallons. For testing lines greater than 3-inch diameter, contact 

MassTech. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Test times varied from 29 to 77 minutes during the evaluation. 

Calibration System is checked biennially and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Leak rate during testing was adjusted to an equivalent of 0.1 gph at 45 psi. 

System monitors for pressure changes which exceed the predicted environmentally 

compensated pressure changes. 

Test data are acquired and recorded automatically. 

Data collected by technicians at the test site are analyzed by trained personnel 

located off-site who notify owner of their pass/fail determination. 

MassTech International, Ltd. Evaluator: Ken Wilcox Associates, Inc. 

102 Basile Road Tel: (816) 443-2494 

Scott, LA 70583 Date of Evaluation: 08/23/07 

Tel: (337) 896-8230 

E-mail: masstech1@compuserve.com 

URL: http://masstechinternational.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

165

Issue Date: June 4, 2003 

Revision Date: April 28, 2005 

MassTech International, Ltd.

MassTech Analog Acoustic Vacuum Method 

(Vacuum Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 96.2% and PFA = 0%. 

Leak 

Threshold

Tank ullage should not be declared tight when the acoustic signal characteristic of a 

leak is detected. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. Empty tanks may also be tested. 

Tanks containing other liquids may be tested after consultation with the 

manufacturer. 

Tests only ullage portion of the tank. 

Product-filled portion of the tank must be tested using an underfill test method. 

Tank Capacity Maximum ullage volume is 20,000 gallons. 

Waiting Time None between delivery and testing. 

Test Period Minimum of 2 minutes. 

There must be no dispensing or delivery during test. 

Test Pressure A nominal vacuum of 1.5 psig must be maintained in the ullage. 

Temperature Acoustic signal is independent of product temperature. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater or other liquid is present outside tank ullage, test must not be used. 

Comments Microphone (hydrophone) should be located within 25 feet of any possible leak 

source. 

Noise signals are tape recorded (not digitally recorded) so that test data can be 

reviewed by the test operator or other qualified individuals. 

Since the method depends on an audible interpretation of the signal, the test must be 

conducted under reasonably quiet conditions. Vibrations due to heavy traffic, nearby 

trains, or construction activities could produce sound levels that could compromise 

the test. 

Vacuum test method may not be effective in some tank excavation backfill (such as 

clay) because it may plug holes in tank. 

If free product is present in tank excavation backfill, a leak in the free product zone 

may not be detected by a vacuum test method. 

A well point or observation well in the tank excavation backfill may help determine 

backfill material, water level in tank excavation backfill, and free product. 

Operators must be trained and certified by the manufacturer. 

MassTech International, Ltd. Evaluator: Ken Wilcox Associates, Inc. 

102 Basile Road Tel: (816) 443-2494 

Scott, LA 70583 Date of Evaluation: 01/02/01 

Tel: (337) 896-8230 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

166

Issue Date: June 4, 2003 

Revision Date: April 28, 2005 

MassTech International, Ltd.

MassTech Remote Spectral Analysis Method 

(Vacuum Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

Tank ullage should not be declared tight when the digital recording of the noise 

spectrum of tank under vacuum has a detectable difference from the digital recording 

of the noise spectrum of tank at zero pressure. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. Empty tanks may also be tested. 

Tanks containing other liquids may be tested after consultation with the 

manufacturer. 

Tests only ullage portion of the tank. 

Product-filled portion of the tank must be tested using an underfill test method. 

Tank Capacity Maximum ullage volume is 20,000 gallons. 

Waiting Time None between delivery and testing. 

Test Period A nominal vacuum of 1.5 psig must be maintained in the ullage. 

Test Pressure A nominal vacuum of 1.5 psig must be maintained in the ullage. 

Temperature Acoustic signal is independent of product temperature. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater or other liquid is present outside tank ullage, test must not be used. 

Comments Microphone (hydrophone) should be located within 25 feet of any possible leak 

source. 

Data are digitally recorded so that it can be reviewed by the test operator or other 

qualified individuals. 

Since the method depends on an audible interpretation of the signal, the test must be 

conducted under reasonably quiet conditions. Vibrations due to heavy traffic, nearby 

trains, or construction activities could produce sound levels that could compromise 

the test. 

Vacuum test method may not be effective in some tank excavation backfill (such as 

clay) because it may plug holes in tank. 

If free product is present in tank excavation backfill, a leak in the free product zone 

may not be detected by a vacuum test method. 

A well point or observation well in the tank excavation backfill may help determine 

backfill material, water level in tank excavation backfill, and free product. 

Operators must be trained and certified by the manufacturer. 

MassTech International, Ltd. Evaluator: Ken Wilcox Associates, Inc. 

102 Basile Road Tel: (816) 443-2494 

Scott, LA 70583 Date of Evaluation: 01/02/01 

Tel: (337) 896-8230 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

167

Issue Date: April 28, 2005 

MassTech International, Ltd.

MassTech 002 Ullage Test System (Pressure or Vacuum Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

Tank ullage should not be declared tight when a predetermined threshold is 

exceeded. This threshold may be modified by the results of the static test. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. Empty tanks may also be tested. 

Tanks containing other liquids may be tested after consultation with the 

manufacturer. 

Tests only ullage portion of the tank. 

Product-filled portion of the tank must be tested using an underfill test method. 

Tank Capacity Maximum ullage volume is 30,000 gallons. 

Waiting Time 2.38 hours with tank filled to 5% 

1.5 hours with tank filled to 50% 

0.27 hours with tank filled to 95% 

The wait time may be shortened by the technician when steady state conditions are 

reached earlier. 

Test Period Total collection time is 2.63 hours with tank filled to 5% 

Total collection time is 1.75 hours with tank filled to 50% 

Total collection time is 0.52 hours with tank filled to 95% 

The 25-minute static test in which the tank is sealed but not pressurized may be 

shortened by the technician when steady state conditions are reached earlier. 

Test data is acquired by computer and forwarded electronically to an analysis center 

where proprietary software is used to assist in the determination of the tank 

condition. 

Test Pressure A nominal pressure or vacuum of 1.5 psig must be maintained in the ullage. 

Temperature Method is sensitive to temperature, atmospheric pressure and other environmental 

fluctuations. These are empirically modeled during the static test. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above tank bottom, a water sensor must be located at the bottom 

of the tank or the test must be conducted in conjunction with the standard MassTech 

wet test. 

Comments Vacuum test method may not be effective in some tank excavation backfill (such as 

clay) because it may plug holes in tank. 

If free product is present in tank excavation backfill, a leak in the free product zone 

may not be detected by a vacuum test method. 

A well point or observation well in the tank excavation backfill may help determine 

backfill material, water level in tank excavation backfill, and free product. 

Operators must be trained and certified by the manufacturer. 

MassTech International, Ltd. Evaluator: Ken Wilcox Associates, Inc. 

102 Basile Road Tel: (816) 443-2494 

Scott, LA 70583 Date of Evaluation: 02/21/05 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

168

Tel: (337) 896-8230 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

169

Issue Date: April 28, 2005 

MassTech International, Ltd.

MassTech 2 Wet Test (Mass Based)

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL)

Certification Leak rate of 0.1 gph with PD > 100% and PFA < 0%. 

Leak 

Threshold

0.05 gph 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Tanks containing other liquids may be tested after consultation with the 

manufacturer. 

Ullage portion of the tank must be tested using an ullage test method. 

Tank Capacity Maximum product volume of 30,000 gallons with ullage volume greater than 5% of 

total tank volume. 

Waiting Time Minimum of 15 minutes. 

Test Period Minimum of 30 minutes. 

Test data is acquired by computer and forwarded electronically to an analysis center 

where proprietary software is used to assist in the determination of the tank 

condition. 

Atmospheric conditions should not be subject to violent change during data collection 

process. 

Temperature System measures product mass (which is not affected by temperature) instead of 

product volume. 

The temperature of added product should not differ more than 9.9 degrees 

Fahrenheit from that already in the tank to minimize ullage or product expansion or 

contraction due to temperature fluctuation. 

Groundwater If groundwater is above tank bottom or if depth to groundwater is not determined, 

the test must be conducted at two different ullage pressures (nominal 1.5 psi 

difference) to eliminate leak masking. 

Comments A well point or observation well in the tank excavation backfill may help determine 

backfill material, water level in tank excavation backfill, and free product. 

Operators must be trained and certified by the manufacturer. 

MassTech International, Ltd. Evaluator: Ken Wilcox Associates, Inc. 

102 Basile Road Tel: (816) 443-2494 

Scott, LA 70583 Date of Evaluation: 11/26/04 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

170

Tel: (337) 896-8230 

E-mail: masstech1@compuserve.com 

URL: http://masstechinternational.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

171

Issue Date: July 13, 2007

Mass Technology Corporation

CBU-1000 AST Leak Detection System 

ABOVEGROUND STORAGE TANK LEAK DETECTION METHOD

Certification Leak rate of 1.717 gph with PD = 95% and PFA = 5%. 

The US EPA has not set a minimum detectable leak rate for aboveground storage 

tank systems at the time of this evaluation. 

Leak 

Threshold

0.859 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals 

or exceeds this threshold. 

Applicability Gasoline, diesel, jet fuel, fuel oil up to #6. 

Other liquids may be tested after consultation with the manufacturer. 

Tank 

Capacity

AST’s with surface areas from 7,854 to 30,172 sq. ft. and diameter’s from 100 to 196 feet. 

Tank must be 20% full. 

Waiting 

Time

Minimum of 20 minutes. 

Test Period Minimum of 20 hours. 

There must be no delivery, transfer, or dispensing during test. 

Temperature One Resistance Temperature Detector (RDT) attached to the bubbler unit. 

System 

Features 

This system uses nitrogen under pressure conveyed to the bottom of the tank via a hose to 

generate (bubbler unit) and release small bubbles at the tank bottom. 

The pressure required to produce the bubbles is equal to the hydrostatic head pressure 

produced by the fluid in the tank plus one atmosphere. This pressure is measured by a 

pressure transducer. 

The measured differential pressure is a direct measurement of the mass of the fluid in the 

tank. 

Calibration The differential pressure transducer is benchmark calibrated by the manufacturer. 

Annual calibration is performed by the CBU unit and returned to the manufacturer if results 

fall outside the benchmark calibration values. 

RTDs are calibrated annually. 

Barometer is replaced every five years. 

Comments Data set is filtered to extract only night time data to eliminate the effects of radiant solar 

heating. 

The CBU control unit is not rated for installation in areas where an explosive ignition risk may 

exist. 

Method may be applied to steel, concrete, aluminum, or fiberglass tanks with either fixed or 

floating roofs. 

Bubbler test pressure must not exceed 18 psig. 

Mass Technology Corporation Evaluator: Ken Wilcox Associates 

P. O. Box 1578 Tel: (816) 443-2494 

Kilgore, TX 75663 Date of Evaluation: 07/31/06 

Tel: (903) 986-3564 

E-mail: info@mtctesting.com 

URL: www.mtctesting.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

172

Issue Date: August 23, 1999 

Mass Technology Corp.

Precision Mass Measurement System (24 hour test)

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 1,257 ft2 or less, leak rate is 0.1 gph with PD = 97.9% and PFA = 2.1%. 

For tanks with larger PSA, leak rate equals [(PSA in ft2 ÷ 1,257 ft2) x 0.1 gph]. 

Example: 

For a tank with PSA = 2,000 ft2; leak rate = [(2,000 ft2 ÷ 1,257 ft2) x 0.1 gph] = 0.16 gph. 

Calculated minimum detectable leak rate is 0.078 gph with PD = 95% and PFA = 5%. 

Leak rate may not be scaled below 0.1 gph. 

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 1,257 ft2 or less, leak threshold is 0.05 gph. 

For tanks with larger PSA, leak threshold equals [(PSA in ft2 ÷ 1,257 ft2) x 0.05 gph]. 

Example: 

For a tank with PSA = 2,000 ft2; leak threshold = [(2,000 ft2 ÷ 1,257 ft2) x 0.05 gph] = 0.08 

gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds the calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single field-constructed vertical tanks. 

Maximum product surface area (PSA) is 3,143 ft2 (approximately 63 ft diameter). 

Performance not sensitive to product level. 

Waiting Time Minimum of 1 hour, 6 minutes after delivery or dispensing. 

Valve leaks and pump drain-back may mask a leak. 

Allow sufficient waiting time to minimize these effects. 

Waiting times during evaluation ranged from 62 minutes to 31 hours. 

Test Period Minimum of 24 hours. 

There must be no dispensing or delivery during test. 

Temperature Measurement not required by this system. 

Water Sensor None. 

Water leaks are measured as increase in mass inside tank. 

Calibration Differential pressure sensor must be checked regularly in accordance with manufacturer's 

instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

Evaluated in a nominal 120,000 gallon, vertical underground tank with product surface area (PSA) 

of 1,257 ft2. 

Mass Technology Corp. Evaluator: Ken Wilcox Associates 

7 Cox Drive Tel: (816) 443-2494 

Kilgore, TX 75662 Date of Evaluation: 03/25/98 

Tel: (903) 986-3564 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

173

Issue Date: August 23, 1999 

Mass Technology Corp.

Precision Mass Measurement System (48 hour test)

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 6,082 ft2, leak rate is 0.294 gph with PD = 95% and PFA = 5%. 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 6,082 ft2) x 0.294 gph]. 

Example: 

For a tank with PSA = 4,000 ft2; leak rate = [(4,000 ft2 ÷ 6,082 ft2) x 0.294 gph] = 0.19 

gph. 

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 6,082 ft2, leak threshold is 0.147 gph. 

For other tank sizes, leak threshold equals [(PSA in ft2 ÷ 6,082 ft2) x 0.147 gph]. 

Example: 

For a tank with PSA = 4,000 ft2; leak threshold = [(4,000 ft2 ÷ 6,082 ft2) x 0.147 gph] = 

0.1gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds the calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single field-constructed vertical tanks. 

Maximum product surface area (PSA) is 6,082 ft2 (approximately 88 ft diameter). 

Performance not sensitive to product level. 

Waiting Time Minimum of 1 hour, 6 minutes after delivery or dispensing. 

Valve leaks and pump drain-back may mask a leak. 

Allow sufficient waiting time to minimize these effects. 

Waiting times during evaluation ranged from 62 minutes to 31 hours. 

Test Period Minimum of 48 hours. 

There must be no dispensing or delivery during test. 

Temperature Measurement not required by this system. 

Water Sensor None. Water leaks are measured as increase in mass inside tank. 

Calibration Differential pressure sensor must be checked regularly in accordance with manufacturer's 

instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

Evaluated in a nominal 600,000 gallon, vertical underground tank with product surface area 

(PSA) of 6,082 ft2. 

Mass Technology Corp. Evaluator: Ken Wilcox Associates 

7 Cox Drive Tel: (816) 443-2494 

Kilgore, TX 75662 Date of Evaluation: 03/25/98 

Tel: (903) 986-3564 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

174

Issue: August 23, 1999 

Mass Technology Corp.

Precision Mass Measurement System (72 hour test)

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 14,200 ft2, leak rate is 0.638 gph with PD = 95% and PFA = 5%. 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 14,200 ft2) x 0.638 gph]. 

Example: 

For a tank with PSA = 20,000 ft2; leak rate = [(20,000 ft2 ÷ 14,200 ft2) x 0.638 gph] = 

0.898 gph. Leak rate may not be scaled below 0.2 gph. 

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 14,200 ft2, leak threshold is 0.319 gph. 

For other tank sizes, leak threshold equals [(PSA in ft2 ÷ 14,200 ft2) x 0.319 gph]. 

Example: 

For a tank with PSA = 20,000 ft2; leak threshold = [(20,000 ft2 ÷ 14,200 ft2) x 0.319 gph] = 

0.449 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds the calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single field-constructed vertical tanks larger than 50,000 gallons. 

Maximum product surface area (PSA) is 35,500 ft2 (approximately 213 ft diameter). 

Performance not sensitive to product level. 

Waiting Time Minimum of 1 hour, 6 minutes after delivery or dispensing. 

Valve leaks and pump drain-back may mask a leak. 

Allow sufficient waiting time to minimize these effects. 

Waiting times during evaluation ranged from 8 minutes to 42.5 hours. 

Test Period Minimum of 72 hours. There must be no dispensing or delivery during test. 

Temperature Measurement not required by this system. 

Water Sensor None. Water leaks are measured as increase in mass inside tank. 

Calibration Differential pressure sensor must be checked regularly in accordance with manufacturer's 

instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

Evaluated in a nominal 2,000,000 gallon, vertical underground tank with product surface 

area (PSA) of 14,200 ft2. 

Mass Technology Corp. Evaluator: Ken Wilcox Associates 

7 Cox Drive Tel: (816) 443-2494 

Kilgore, TX 75662 Date of Evaluation: 03/25/98 

Tel: (903) 986-3564 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

175

Issue Date: February 22, 2008 

Mesa Engineering

Mesa 2-D Method with ACT v1 Water Level Sensor

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (VACUUM)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 1.6%.

Leak 

Threshold

A tank system should not be declared tight when an acoustic signal is detected above 

the background or baseline noise by a computer data acquisition system, or when water 

ingress is detected by the water sensor.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, fuel oil #6, solvents, and waste oil. 

Other liquids may be tested after consultation with the manufacturer. 

Tank 

Capacity

Maximum of 30,000 gallons. 

Evaluated at product levels between 8%* and 91% full. 

Maximum of 30,000 gallons per tank for manifolded tank systems. If isolation cannot 

be performed, the tanks can be tested simultaneously using two sondes (sound 

amplifier modules) or else they must be pressurized simultaneously and tested 

separately, depressurizing between tests.

Waiting Time None between delivery and testing.

Test Period When groundwater level in tank excavation backfill is below bottom of tank: After the 

Vacuum conditions are established on the tank, the data collection times are very short, 

typically one minute or less. 

When groundwater level in tank excavation backfill is above bottom of tank or when the 

groundwater level in the tank excavation backfill has not been determined: The time it 

takes for water ingress to increase the water level in the tank to allow the water sensor 

to detect the "minimum detectable change in water level" (see "Water Sensor" section 

below). 

Test period based on water ingress is dependent on tank size. For example, the test 

period is 0.97 hours for a 10,000 gallon (96” dia x319” lg) tank. 

The correct test period is always determined from the field calibration on each specific 

tank. 

Before starting test, water sensor must be calibrated to "minimum detectable water 

level" (see "Water Sensor" section below) according to manufacturer's instructions. 

There must be no dispensing or delivery during test.

Test 

Pressure

A vacuum of 60 inches of water or –2.16 psig must be used.

Temperature Acoustic signal is independent of product temperature.

Water 

Sensor

Conductivity water sensor must be used to detect water ingress and must be calibrated 

for every test when groundwater level in tank excavation backfill is above bottom of 

tank or when the groundwater level in the tank excavation backfill has not been 

determined. 

Minimum detectable change in water level is 0.016 inch. 

Minimum water level in tank must be adjusted to at least 0.14 inch (sensor’s minimum 

detectable water level) before calibrating sensor and starting test.

DATA SHEET CONTINUED ON NEXT PAGE
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

176

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Mesa 2-D Method with ACT v1 Water Level 

Sensor 

Groundwater Groundwater level in tank excavation backfill must be determined by observation well or 

soil probe in tank excavation backfill. 

If groundwater level in tank excavation backfill is above bottom of tank or the 

groundwater level in the tank excavation backfill has not been determined, water sensor 

must be used and test time extended to ensure water ingress detection during test.

Comments *Although not evaluated using empty tanks, a third party acoustics specialist has 

certified the device is equally effective when tanks are empty as when tanks contain 

product. 

Test may be inconclusive if there is high background noise. 

Vacuum test method may not be effective in some tank excavation backfill (such as 

clay) because it may plug holes in tank. 

If free product is present in tank excavation backfill, a leak in the free product zone may 

not be detected by a vacuum test method. 

An observation well or soil probe in tank excavation backfill may help determine backfill 

material, water level in tank excavation backfill, and presence of free product. 

Manufacturer must certify test operator at least every 2 years. 

More than 4 psi pressure differential across the tank wall at any location in the tank 

could damage tank.

Mesa Engineering Evaluator: Ken Wilcox Associates 

5801 Dierker Tel: (816) 443-2494 

Houston, TX 77041 Date of Evaluation: 07/17/01 

Tel: (713) 895-7000 

E-mail: charlie@atsenvironmental.com 

URL: www.mesatest.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

177

Issue Date: November 22, 1995 

Revision Date: August 23, 1999 

Mine Safety Appliances

Tankgard P/N 481532,Tankgard VIII P/N 488803

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: quantitative 

Sampling frequency: continuous 

Operating principle: metal oxide semiconductor 

Test Results:

benzene 2-methylbutane

Detection time (sec) 5 16 

Fall time (min:sec) 04:12 04:42 

Lower detection limit (ppm) 12.5 12.5 

Specificity Results (in addition to above):

Activated (100%): n-butane, n-hexane, 2-methylpentane, toluene, isobutane. 

Manufacturer’s specifications:

Maximum Wire Distance: 500 ft using 18 AWG 

Response Time: 30 seconds 

Recovery Time: 1 minute maximum 

Sensor Life: 2 year warranty 

Mine Safety Appliances Evaluator: Carnegie Mellon Research Institute 

P. O. Box 427 Tel: (412) 268-3495 

Pittsburgh, PA 15230 Dates of Evaluation: 03/26/91, 03/28/91 

Tel: (800) 672-4678 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

178

Issue Date: August 26, 2003 

Revision Date: July 6, 2006 

OMNTEC Mfg., Inc.

Omntec PLLD 

(Originally listed as Campo/Miller LS300-120 PLUS AL, LS300-120 PLUS AL A/S, LS300-120 

PLUS AL LSI) 

(for Rigid and/or Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol. 

Leak 

Threshold

1.5 gph for leak rate of 3.0 gph. 

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuels, fuel oil #4, waste oil, kerosene. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized rigid or flexible pipelines for all leak rates. 

System tests pressurized combination rigid and flexible pipelines for 3.0 gph leak rate 

only. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

For 3.0 gph leak rate test: 

 Maximum of 396.6 gallons for rigid pipelines. 

 Maximum of 95.5 gallons for flexible pipelines. 

 Maximum of 492.1 gallons for combination of rigid and flexible pipelines 

 (rigid portion cannot exceed 396.6 gallons and flexible portion cannot exceed 95.5 

 gallons). 

For 0.2 leak rate and 0.1 gph leak rate tests: 

 Maximum of 163 gallons for rigid pipelines (Example: 350 feet of 

 3 3/8 inch line). 

 Maximum of 39.5 gallons for flexible pipelines (Example: 430 feet of 1 1⁄2 inch line). 

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 3 hours between dispensing and testing for leak rate of 0.2 gph. 

Minimum of 6 hours between dispensing and testing for leak rate of 0.1 gph. 

Test Period Response time is 10 minutes for leak rate of 3.0 gph. 

Minimum of 25 minutes for leak rate of 0.2 gph. 

Minimum of 34 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

DATA SHEET CONTINUED ON NEXT PAGE
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

179

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Omntec Mfg., Inc., Omntec PLLD 

(Originally listed as Campo/Miller LS300-120 PLUS AL, LS300-120 PLUS AL A/S, LS300-120 

PLUS AL LSI) (for Rigid and/or Flexible Pipelines)

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline every 45 minutes for leak rate of 3.0 gph. 

Automatic testing of pipeline when pump has been idle for 3 hours for leak rate of 0.2 

gph. 

Automatic testing of pipeline when pump has been idle for 6 hours for leak rate of 0.1 

gph. 

Preset threshold. 

Triplicate testing to determine if pipeline is leaking. 

Pump shutdown, indicator light and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

OMNTEC Mfg., Inc. Evaluator: Ken Wilcox Associates 

1993 Pond Rd. Tel: (816) 443-2494 

Ronkonkoma, NY 11779 Date of Evaluation: 06/23/95, 09/10/98, 05/26/06 

Tel: (631) 981-2001 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

180

Issue Date: June 19, 1996 

Revision Date: May 25, 2001 

OMNTEC Mfg., Inc.

OEL 8000, K-OEL 8000, OEL 8000 II, K-OEL 8000 II 

(MTG - XX Magnetostrictive Probe, 4 inch dia Floats)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 97.8% and PFA = 2.2%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 30,000 gallons. 

Tanks less than 95% full may be tested. Minimum product level required is based on tank diameter as 

follows: 

48" dia/ min 12"; 

64" dia/ min 15"; 

72" dia/ min 16"; 

96" dia/ min 20"; 

126" dia/ min 25"; 

132" dia/ min 26". 

For other tank diameters, consult manufacturer. 

Waiting Time Minimum of 4 hours between delivery and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 4 hours, 30 minutes. 

Test data are acquired and recorded by the controller. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a probe containing a minimum of 5 thermistors. 

At least one thermistor must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.055 inch. 

Minimum detectable change in water level is 0.011 inch. 

Calibration Probe must be checked and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is 

a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains 

product. 

OMNTEC Mfg., Inc. Evaluator: Ken Wilcox Associates 

1993 Pond Rd. Tel: (816) 443-2494 

Ronkonkoma, NY 11779 Dates of Evaluation: 01/17/96, 09/15/97, 

Tel: (631) 981-2001 10/26/00 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

181

Issue Date: June 19, 1996 

Revision Date: May 25, 2001 

OMNTEC Mfg., Inc.

OEL 8000, K-OEL 8000 

(MTG - XX Magnetostrictive Probe, 4 inch dia Floats)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.1 gph with PD = 97.8% and PFA = 2.2%. 

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tanks less than 95% full may be tested. 

Minimum product level required is based on tank diameter as follows: 

48" dia/ min 12"; 

64" dia/ min 15"; 

72" dia/ min 16"; 

96" dia/ min 20"; 

126" dia/ min 25"; 

132" dia/ min 26". 

For other tank diameters, consult manufacturer. 

Waiting Time Minimum of 6 hours, 30 minutes between delivery and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 4 hours. 

Test data are acquired and recorded by the controller. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a probe containing a minimum of 5 thermistors. 

At least one thermistor must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.055 inch. 

Minimum detectable change in water level is 0.011 inch. 

Calibration Probe must be checked and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is 

a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains 

product. 

OMNTEC Mfg., Inc. Evaluator: Ken Wilcox Associates 

1993 Pond Rd. Tel: (816) 443-2494 

Ronkonkoma, NY 11779 Dates of Evaluation: 01/17/96, 09/15/97 

Tel: (631) 981-2001 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

182

Issue Date: February 11, 2003 

Revision Date: June 8, 2005 

OMNTEC Mfg., Inc.

OEL 8000 II, K-OEL 8000 II Monitoring System with CITLDS 

(MTG - XX Magnetostrictive Probe)

CONTINUOUS IN-TANK LEAK DETECTION METHOD 

(CONTINUOUS AUTOMATIC TANK GAUGING)

Certification Leak rate of 0.2 gph with PD = 99% and PFA = 1%. 

Leak Threshold 0.1 gph. 

A tank system should not be declared tight and a message printed for the operator, if the test results 

indicate a loss or gain that exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

The system is designed primarily for use with petroleum fuels. Other liquids with known coefficients of 

expansion and density may be tested after consultation with the manufacturer. 

Tank Capacity Maximum of 18,000 gallons. 

Throughput Monthly maximum of 154,195 gallons. 

Waiting Time The automatic data collection program allows for 20 minutes for waiting time after the product delivery 

and stabilization. Once product has settled after a delivery, waiting time is a minimum of 20 minutes. 

Test Period Data collection time ranges from 3 hours to 14 days. 

Data sampling frequency is every 17 seconds. 

System collects data at naturally occurring product levels without interfering with normal tank operation 

and discards data from unstable periods when system performs test. 

Temperature Average for product is determined by a minimum of 5 thermistors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.055 inch. 

Minimum detectable change in water level is 0.011 inch. 

Calibration Probe must be checked annually and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments System reports a result of "pass" or "fail." 

Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there 

is a probe used in each tank and the siphon is broken during testing. 

System distinguishes large leak rates (> 1gph) from dispensing activities and reports those as "fail". 

For valid monthly testing, a conclusive test report must be produced for each tank every month. 

System warns operator if there are no "passing" tests completed during the month. 

For very active tanks, a tank shut down may become necessary in order for the system to collect 

enough quiet-time data for a test. 

Constant and variable leaks were mathematically induced into tight tank test records which were 

collected by systems installed at various active tank sites. 

During the evaluation, data was collected when the product level was between 12.7% and 97.9% of 

tank volume. 

The database for evaluation of the system included sites with vapor recovery. 

Tanks used in this evaluation contained gasoline and diesel.

OMNTEC Mfg., Inc. Evaluator: Ken Wilcox Associates 

1993 Pond Rd. Tel: (816) 443-2494 

Ronkonkoma, NY 11779 Dates of Evaluation: 1/16/03 

Tel: (631) 981-2001 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

183

Issue Date: November 7, 2001 

OMNTEC Mfg., Inc.

Controller Models OEL 8000 11, K-OEL 8000 11 with 

Liquid level sensors BX-L, BX-LS, BX-LWF, BX-RES

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative, non-discriminating 

Sampling frequency: continuous 

Operating principle: optical sensor 

 

Test Results:

BX-L unleaded gasoline diesel water

Detection time (sec) < 1 < 1 < 1 

Fall time (sec) < 1 < 1 < 1 

Lower detection limit (in) 0.63 0.46 0.40 

BX-LS 

Detection time (sec) < 1 < 1 < 1 

Fall time (sec) < 1 < 1 < 1 

Lower detection limit (in) 0.464 0.468 0.500 

BX-LWF 

Detection time (sec) < 1 < 1 < 1 

Fall time (sec) < 1 < 1 < 1 

Lower detection limit (in) 0.63 0.46 0.40 

BX-RES 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Low level threshold - lower detection limit (in) 2.61 2.57 2.54 

High level threshold - lower detection limit (in) 8.57 8.59 8.56 

Specificity Results: 

Manufacturer claims sensors will respond to any liquid after its threshold is exceeded. No additional 

materials tested.

Manufacturer’s Specifications:

Manufacturer states that the sensors can also be tested from their location without removal. The test 

procedure is as follows: When the test button on the controller is pressed, the normally closed light 

beam is opened, which simulates an actual leak occurrence, sending an alarm signal to the controller. 

The controller responds to the alarm signal by turning on an audio/visual alarm and printing the test 

results. 

OMNTEC Mfg., Inc. Evaluator: Ken Wilcox Associates 

1993 Pond Rd. Tel: (816) 443-2494 

Ronkonkoma, NY 11779 Date of Evaluation: 11/15/00 

Tel: (631) 981-2001 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

184

Issue Date: November 7, 2001 

OMNTEC Mfg., Inc.

Controller Models OEL 8000 11, K-OEL 8000 11 with 

Liquid level sensors BX-PDS, BX-PDWF, BX-PDWS

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative, discriminating 

Sampling frequency: continuous 

Operating principle: optical sensor, conductivity 

 

Test Results:

BX-PDS unleaded gasoline diesel water

Detection time (sec) < 1 < 1 < 1 

Fall time (sec) < 1 < 1 < 1 

Lower detection limit (cm) 0.464 0.468 0.500 

BX-PDWF 

Detection time (sec) < 1 < 1 < 1 

Fall time (sec) < 1 < 1 < 1 

Lower detection limit (cm) 0.63 0.46 0.40 

BX-PDWS 

Detection time (sec) < 1 < 1 < 1 

Fall time (sec) < 1 < 1 < 1 

Lower detection limit (cm) 0.464 0.468 0.500 

Specificity Results: 

Manufacturer claims sensors will respond to any liquid after its threshold is exceeded. No additional 

materials tested.

Manufacturer’s Specifications: 

Manufacturer states that the sensors can also be tested from their location without removal. The test 

procedure is as follows: When the test button on the controller is pressed, the normally closed light 

beam is opened, which simulates an actual leak occurrence, sending an alarm signal to the controller. 

The controller responds to the alarm signal by turning on an audio/visual alarm and printing the test 

results. 

Comments: 

Optic sensor BX-PDS also contains a conductivity sensor to determine if the product is hydrocarbon or 

water. 

OMNTEC Mfg., Inc. Evaluator: Ken Wilcox Associates 

1993 Pond Rd. Tel: (816) 443-2494 

Ronkonkoma, NY 11779 Date of Evaluation: 11/15/00 

Tel: (631) 981-2001 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

185

Issue Date: November 22, 1995 

Revision Date: April 14, 2003 

OMNTEC Mfg., Inc.

Controller Models Series LPD, LU, OEL8000 

with Sensors L-LL-R-1, LS-ASC, PDS-ASC, PDWS-1, PDWF-1

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: refractive index of liquids (all), electrical conductivity (PDS-ASC, PDWS-1, and 

PDWF-1) 

 

Test Results:

L-LL-R-1 (low level) unleaded gasoline diesel water

Detection time (sec) < 1 < 1 < 1 

Fall time (sec) < 1 < 1 < 1 

Lower detection limit (cm) 6.63 6.53 6.45 

L-LL-R-1 (high level) 

Detection time (sec) < 1 < 1 < 1 

Fall time (sec) < 1 < 1 < 1 

Lower detection limit (cm) 21.7 21.8 21.7 

LS-ASC , PDS-ASC 

Detection time (sec) < 1 < 1 < 1 

Fall time (sec) < 1 < 1 < 1 

Lower detection limit (cm) 2.24 2.11 1.42 

PDWS-1 

Detection time (sec) < 1 < 1 < 1 

Fall time (sec) < 1 < 1 < 1 

Lower detection limit (cm) 1.93 1.85 1.63 

PDWF-1

Detection time (sec) < 1 < 1 < 1 

Fall time (sec) < 1 < 1 < 1 

Lower detection limit (cm) 1.60 1.67 1.02 

Specificity Results (in addition to above):

Activated: synthetic gasoline, n-hexane, jet-A fuel, toluene, xylene(s). 

LS and PD series responds to any liquid with an index of refraction different than air. 

PD series responds to any conducting liquid. 

Comments:

Detectors are listed as interstitial due to intended use. 

Sensors are reusable. 

OMNTEC Mfg., Inc. Evaluator: Ken Wilcox Associates 

1993 Pond Rd. Tel: (816) 443-2494 

Ronkonkoma, NY 11779 Date of Evaluation: 06/12/93 

Tel: (631) 981-2001 (Revised 11/20/98) 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

186

Issue Date: November 22, 1995 

Revision Date: April 18, 1997 

One Plus Corp.

Leak Edge 

Models 100-3001, 100-4001

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: product permeable 

Test Results:

unleaded gasoline synthetic gasoline

Detection time (min:sec) 5:41 5:14 

Fall time (min:sec) 30:39 18:36 

Lower detection limit (cm) 0.02 0.02 

Specificity Results (in addition to above):

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s). 

Manufacturer’s specifications:

Operating temperatures: Sensor is -40 degrees C to 74 degrees C; Monitor Module is -20 degrees C to 

49 degrees C. 

Comments:

Sensors are reusable. 

One Plus Corp. Evaluator: Underwriters Laboratories Inc. 

3182 McArthur Blvd. Tel: (847) 272-8800 

Northbrook, IL 60062 Date of Evaluation: 12/17/91 

Tel: (847) 498-0955 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

187

Issue Date: November 22, 1995 

Revision Date: April 28, 2005 

OPW Fuel Management Systems 

(originally listed as Emco Electronics, Tuthill Transfer Systems)

EECO System LLD (Q0011)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified 

using an equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak Threshold 2.0 gph for leak rate of 3.0 gph. 

0.1293 gph for leak rate of 0.2 gph. 

0.0793 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals 

or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 67.4 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph. 

Ranges from 0 to 1 hour, 27 minutes between dispensing and testing for leak rate of 0.2 

gph. 

Ranges from 0 to 2 hours, 48 minutes between dispensing and testing for leak rate of 0.1 

gph. 

Test Period Response time is 2 minutes for leak rate of 3.0 gph. 

Minimum of 9 minutes for leak rate of 0.2 gph. 

Minimum of 31 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown, message display, and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525 Dates of Evaluation: 12/31/93, 07/18/94 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

188

Issue Date: November 22, 1995 

Revision Date: April 28, 2005 

OPW Fuel Management Systems 

(originally listed as Emco Electronics, Tuthill Transfer Systems)

EECO System LLD 

(for Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol.

Leak 

Threshold

2.0 gph for leak rate of 3.0 gph. 

0.0793 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4.

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure.

Pipeline 

Capacity

Maximum of 49.6 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 14 minutes between dispensing and testing for leak rate of 0.1 gph.

Test Period Response time is 11 minutes, 24 seconds for leak rate of 3.0 gph. 

Minimum of 9 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown, message display, and alarm activation if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525 Dates of Evaluation: 12/31/93, 07/18/94 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

189

Issue Date: November 22, 1995 

Revision Date: April 28, 2005 

OPW Fuel Management Systems 

(originally listed by Hasstech and later as Petro Vend, Inc.)

LineTite Pipeline Leak Monitor

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol.

Leak 

Threshold

2.0 gph for leak rate of 3.0 gph. 

0.062 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel.

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed on the pipeline.

Pipeline 

Capacity

Maximum of 341 gallons.

Waiting Time None between delivery and testing. None between dispensing and testing.

Test Period Response time is 1 to 26 minutes for leak rate of 3.0 gph. 

Response time is 1 hour, 30 minutes to 12 hours, 30 minutes for leak rate of 1.0 gph. 

Test data are acquired and recorded by a permanently installed microprocessor. 

Calculations are automatically performed by the microprocessor.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown, message display, and alarm activation if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Formerly manufactured by Hasstech.

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525 Dates of Evaluation: 12/31/93, 07/18/94 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

190

Issue Date: April 18, 1997 

Revision Date: April 28, 2005 

OPW Fuel Management Systems 

(originally listed by Hasstech and later as Petro Vend, Inc.)

LineTite Pipeline Leak Monitor 

(for Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol.

Leak 

Threshold

2.0 gph for leak rate of 3.0 gph. 

0.062 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel.

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed on the pipeline.

Pipeline 

Capacity

Maximum of 49.6 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is 1 to 6 minutes for leak rate of 3.0 gph. 

Response time is 2 hours, 18 minutes to 5 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by a permanently installed microprocessor. 

Calculations are automatically performed by the microprocessor.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown, message display, and alarm activation if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Formerly manufactured by Hasstech.

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525 Dates of Evaluation: 12/31/93, 07/18/94 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

191

Issue Date: August 23, 1999 

Revision Date: April 28, 2005 

OPW Fuel Management Systems 

(originally listed by Hasstech and later as Petro Vend, Inc.)

LineTight Pipeline Leak Monitor Model 2001J

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 

0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol.

Leak 

Threshold

2.5 gph for leak rate of 3.0 gph. 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4.

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline.

Pipeline 

Capacity

Maximum of 172 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is 1 to 5 minutes for leak rate of 3.0 gph. 

Response time is 2 hours, 10 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown, message display, and alarm activation if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Formerly manufactured by Hasstech.

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525-9909 Dates of Evaluation: 04/15/97, 05/28/98 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

192

Issue Date: August 23, 1999 

Revision Date: April 28, 2005 

OPW Fuel Management Systems 

(originally listed by Hasstech and later as Petro Vend, Inc.)

LineTight Pipeline Leak Monitor Model 2001J 

(for Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol.

Leak 

Threshold

2.5 gph for leak rate of 3.0 gph. 0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4.

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline.

Pipeline 

Capacity

Maximum of 39.5 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is 1 minute for leak rate of 3.0 gph. 

Response time is 6 hours, 37 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. Single test to determine if pipeline is leaking. 

Pump shutdown, message display, and alarm activation if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Formerly manufactured by Hasstech.

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525-9909 Dates of Evaluation: 04/15/97, 05/28/98 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

193

Issue Date: November 22, 1995 

Revision Date: May 19, 2009

OPW Fuel Management Systems 

(originally listed as Emco Electronics, Tuthill Transfer Systems)

EECO System 1000, 1500, 2000, 3000 and Galaxy 0.2 gph Precision Test and Quick Test 

(Q0400-4xx Magnetostrictive Probe or OPW 924\B TLM-B Magnetostrictive probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph w/ PD = 99.1% and PFA = 0.9% for Precision Test using Q0400-

4xxx probe. 

Leak rate of 0.2 gph w/ PD = 95.4% and PFA = 4.6% for Quick Test using Q0400-

4xxx probe. 

Leak rate of 0.2 gph w/ PD = 98.4% and PFA = 1.6% using 924\B TLM-B probe. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. Tanks less than 95% full may be tested. Minimum product 

level required based on tank diameter as follows: 

48" dia/min 8.5"; 

64" dia/min 10.5"; 

72" dia/min 11.5"; 

96" dia/min 14"; 

126" dia/min 18". 

For other tank diameters, see evaluation report. 

Waiting Time From 1 to 6 hours between delivery and testing depending on tank conditions with 

Q0400-4xxx probe. 

6 hours between delivery and testing with 924\B TLM-B probe. 

None between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Average of 2 hours, 46 minutes using Q0400-4xxx probe during Precision Test 

evaluation. 

Average of 1 hour, 9 minutes using Q0400-4xxx probe during Quick Test evaluation. 

Test period of 4 hours using 924\B TLM-B probe. 

Test data are acquired and recorded by a microprocessor which automatically 

determines test time based on tank size and product level. 

There must be no dispensing or delivery during test. 

Temperature Probe contains 5 resistance temperature detectors (RTDs) (5 thermistors for 

924B\TLM-B probe) to monitor average product temperature. 

At least one RTD must be submerged in product during test. 

DATA SHEET CONTINUED ON NEXT PAGE
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

194

DATA SHEET CONTINUED FROM PREVIOUS PAGE: OPW Fuel Management Systems 

EECO System 1000, 1500, 2000, 3000 and Galaxy 0.2 gph Precision Test and Quick Test 

(Q0400-4xx Magnetostrictive Probe or OPW 924\B TLM-B 

Magnetostrictive probe) 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.66 inches using Q0400-4xxx probe. 

Minimum detectable change in water level is 0.039 inches using Q0400-4xxx probe. 

Minimum detectable water level in the tank is 0.75 inches using 924\B TLM-B probe. 

Minimum detectable change in water level is 0.08 inches using 924\B TLM-B probe. 

Calibration RTDs (or thermistors)and probe must be checked and, if necessary, calibrated in 

accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only the portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank which 

routinely contains product. 

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525 Dates of Evaluation: 12/23/93, 06/20/94 

Tel: (708) 485-4200 08/17/95, 07/28/97, 11/17/99 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

195

Issue Date: November 22, 1995 

Revision Date: October 18, 2002 

OPW Fuel Management Systems 

(originally listed as Emco Electronics, Tuthill Transfer Systems)

EECO System 1000, 1500, 2000, 3000 and Galaxy 0.1 gph Precision Test and Quick Test 

(Q0400-4xx Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.1 gph with PD = 99% and PFA = 1% for Precision Test. 

Leak rate of 0.1 gph with PD = 96% and PFA = 4% for Quick Test. 

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 15,000 gallons. Tanks less than 95% full may be tested. Minimum product level required based on 

tank diameter as follows: 

48" dia/min 8.5"; 

64" dia/min 10.5"; 

72" dia/min 11.5"; 

96" dia/min 14"; 

126" dia/min 18". 

For other tank diameters, see evaluation report. 

Waiting Time Minimum of 6 hours between delivery and testing. 

None between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 3 hours, 45 minutes for Precision Test. 

Average of 3 hours 45 minutes at 95% full and 5 hours 58 minutes at 50% full during Precision Test evaluation. 

Minimum of 1 hour, 49 minutes for Quick Test. 

Average of 1 hour 48 minutes at 95% full and 2 hours 48 minutes at 50% full during Quick Test evaluation. 

Test data are acquired and recorded by a microprocessor which automatically determines test time based on 

tank size and product level. 

There must be no dispensing or delivery during test. 

Temperature Probe contains 5 resistance temperature detectors (RTDs) to monitor average product temperature. 

At least one RTD must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.66 inches. 

Minimum detectable change in water level is 0.039inches. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only the portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). Consistent testing 

at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank which routinely contains product. 

OPW Fuel Management Systems Evaluator: Midwest Research Institute 

6900 Santa Fe Dr. Tel: (816) 753-7600 

Hodgkins, IL 60525 Dates of Evaluation: 02/08/94, 09/19/97 

Tel: (708) 485-4200 01/04/00 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

196

Issue Date: November 22, 1995 

Revision Date: October 18, 2002 

OPW Fuel Management Systems 

(originally listed as Petro Vend, Inc.)

Petrosonic III 

(Version 4.05 Model 613, 4 inch dia Float, Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.07% and PFA = 0.93%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank 

Capacity

Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 12 hours between delivery and testing. 

There must be no delivery during waiting time. 

Minimum of 30 minutes between dispensing and testing. 

Test Period Minimum of 4 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated as the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 resistance temperature detectors 

(RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.92 inch. 

Minimum detectable change in water level is 0.02 inch. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Petrosonic III version 4.04 is an older model automatic tank gauging system, which is no 

longer being manufactured. 

OPW Fuel Management Systems Evaluator: Underwriters Laboratories, Inc. 

6900 Santa Fe Dr. Tel: (847) 272-8800 

Hodgkins, IL 60525-9909 Date of Evaluation: 11/04/94 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

197

Issue Date: November 22, 1995 

Revision Date: September 18, 2007 

OPW Fuel Management Systems 

(originally listed as Petro Vend, Inc.)

Site Sentinel Models 2 and 3, 

(Model 613, 2 inch dia Floats, Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 96.55% and PFA = 3.45%. 

Leak Threshold 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 12 hours between delivery and testing. 

There must be no delivery during waiting time. 

Minimum of 30 minutes between dispensing and testing. 

Test Period Minimum of 4 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated as the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 resistance temperature detectors 

(RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 2.47 inches. 

Minimum detectable change in water level is 0.037 inch. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Site Sentinel models 2 and 3 were formerly models II and III respectively. 

OPW Fuel Management Systems Evaluator: Underwriters Laboratories, Inc. 

6900 Santa Fe Dr. Tel: (847) 272-8800 

Hodgkins, IL 60525-9909 Date of Evaluation: 11/04/94 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

198

Issue Date: November 22, 1995 

Revision Date: September 18, 2007 

OPW Fuel Management Systems 

(originally listed as Petro Vend, Inc.)

Site Sentinel Models 2 and 3, 

(Model 613, 4 inch dia Floats, Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.82% and PFA = 0.18%. 

Leak rate of 0.1 gph with PD = 99.95% and PFA = 0.35%. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.06 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss that equals or exceeds 

this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after consultation 

with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full for leak rate of 0.2 gph. 

Tank must be minimum 90% full for leak rate of 0.1 gph. 

Waiting Time Minimum of 12 hours between delivery and testing. 

There must be no delivery during waiting time. 

Minimum of 30 minutes between dispensing and testing. 

Test Period Minimum of 2 hours for leak rate of 0.2 gph. 

Minimum of 4 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated as the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 resistance temperature detectors (RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.92 inch. 

Minimum detectable change in water level is 0.02 inch. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

Site Sentinel models 2 and 3 were formerly models II and III respectively.

OPW Fuel Management Systems Evaluator: Underwriters Laboratories, Inc. 

6900 Santa Fe Dr. Tel: (847) 272-8800 

Hodgkins, IL 60525-9909 Date of Evaluation: 11/04/94 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

199

Issue Date: June 1, 2001 

Revision Date: December 1, 2008

OPW Fuel Management Systems 

(originally listed as Petro Vend, Inc.)

Site Sentinel Models 1, 2 and 3, iTouch 

(Model 924A, 2 inch dia Floats, Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 97.8% and PFA = 2.2% for 30 minute test. 

Leak rate of 0.2 gph with PD = 99.4% and PFA = 0.6% for 1 hour test. 

Leak rate of 0.2 gph with PD = 99.7% and PFA = 0.3% for 2 hour test. 

Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1% for 3 hour test. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank 

Capacity

Maximum of 20,000 gallons. 

Tank must be minimum 50% full for 1 hour test. 

Tank must be minimum 14% full for 30 minute, 2 hour and 3 hour test. 

Minimum product level required based on 14% full tank and tank diameter is as follows: 

48" dia/min 9.5"; 

120" dia/min 24.7". 

For other tank diameters, consult manufacturer. 

Waiting 

Time

Minimum of 8 hours between delivery and testing. 

There must be no delivery during waiting time. 

Minimum of 30 minutes between dispensing and testing. 

Test Period Variable: 

Minimum of 30 minutes, 1, 2 or 3 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated as the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a probe containing 5 thermistors with the lowest 

thermistor located at the 10% tank volume level above the bottom of the tank. 

Water 

Sensor

Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.75 inch. 

Minimum detectable change in water level is 0.08 inch. 

DATA SHEET CONTINUED ON NEXT PAGE
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

200

DATA SHEET CONTINUED FROM PREVIOUS PAGE: OPW Fuel Management Systems 

Site Sentinel Models 1, 2 and 3, iTouch (Model 924A, 2 inch dia Floats, Magnetostrictive 

Probe)

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Site Sentinel models 2 and 3 were formerly models II and III respectively. 

Model 924A Magnetostrictive Probe was formerly model 924.

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525-9909 Date of Evaluation: 11/06/00 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

201

Issue Date: June 1, 2001 

Revision Date: December 1, 2008

OPW Fuel Management Systems 

(originally listed as Petro Vend, Inc.)

Site Sentinel Models 1, 2 and 3, iTouch 

(Model 924A with 4 inch dia Floats, and 924B with 2 inch dia or 4 inch dia Floats, 

Magnetostrictive Probes)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 97.8% and PFA = 2.2% for 30 minute test. 

Leak rate of 0.2 gph with PD = 98.7% and PFA = 1.3% for 1 hour test. 

Leak rate of 0.2 gph with PD = 99.2% and PFA = 0.8% for 2 hour test. 

Leak rate of 0.2 gph with PD = 99.5% and PFA = 0.5% for 3 hour test. 

Leak rate of 0.1 gph with PD = 96.9% and PFA = 1.9% for 2 hour test. 

Leak rate of 0.1 gph with PD = 98.2% and PFA = 1.0% for 3 hour test. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.053 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. Other liquids with known coefficients of expansion and 

density may be tested after consultation with the manufacturer. 

Tank Capacity Maximum of 20,000 gallons. 

Tank must be minimum 14% full for leak rate of 0.2 gph. 

Minimum product level required based on 14% full tank and tank diameter is as 

follows: 

48" dia/min 9.5"; 

120" dia/min 24.7". 

For other tank diameters, consult manufacturer. 

Tank must be minimum 90% full for leak rate of 0.1 gph. 

Waiting Time Minimum of 8 hours between delivery and testing for leak rate of 0.2 gph. 

Minimum of 12 hours between delivery and testing for leak rate of 0.1 gph. 

There must be no delivery during waiting time. 

Minimum of 30 minutes between dispensing and testing. 

Test Period Variable: 

Minimum of 30 minutes, 1, 2 or 3 hours for leak rate of 0.2 gph and minimum of 2 or 

3 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated as the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a probe containing 5 thermistors with the 

lowest thermistor located at the 10% tank volume level above the bottom of the tank. 

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

202

DATA SHEET CONTINUED FROM PREVIOUS PAGE: OPW Fuel Management Systems 

Site Sentinel Models 1, 2 and 3, iTouch (Model 924A with 4 inch dia Floats, and 924B with 2 

inch dia or 4 inch dia Floats, Magnetostrictive Probes)

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.848 inch. 

Minimum detectable change in water level is 0.043 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Site Sentinel models 2 and 3 were formerly models II and III respectively. 

Model 924A Magnetostrictive Probe was formerly model 924. 

Model 924B Magnetostrictive Probe is a newer probe that was not originally listed 

under Petro Vend, Inc. 

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525-9909 Date of Evaluations: 11/03/00, 07/27/06 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

203

Issue Date: January 26, 2009 

Revision Date: May 19, 2009 

OPW Fuel Management Systems

Site Sentinel Model iSite 

(Model 924B with 2 inch dia or 4 inch dia Floats, Magnetostrictive Probes or 

Q0400-4xx Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 98.18% and PFA = 1.82% using 924\B probe with 2” dia float. 

Leak rate of 0.2 gph with PD = 95.28% and PFA = 4.72% using 924\B probe with 4” dia float. 

Leak rate of 0.1 gph with PD = 95.9% and PFA = 4.1% using 924\B probe with 2” dia float. 

Leak rate of 0.1 gph with PD = 96.5% and PFA = 3.5% using 924\B probe with 4” dia float. 

Leak rate of 0.2 gph with PD = 98.1% and PFA = 1.9% using Q0400-4xx probe with 4” dia float.

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph using 924\B or Q0400-4xx probe with 2” or 4” dia floats. 

0.033 gph for leak rate of 0.1 gph using 924\B probe with 2” dia float. 

0.05 gph for leak rate of 0.1 gph using 924\B probe with 4” dia float. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this 

threshold.

Applicability Gasoline, diesel, aviation fuel. Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 20,000 gallons. 

Tank must be minimum 50% full for leak rate of 0.2 gph using 924\B or Q0400-4xx probe. 

Tank must be minimum 90% full for leak rate of 0.1 gph using 924\B probe.

Waiting Time Minimum of 6 hours between delivery and testing using 924\B or Q0400-4xx probe. 

There must be no delivery during waiting time.

Test Period Average data collection time of 30 minutes using 924\B probe for leak rate of 0.2 gph. 

Minimum of 6 hours using 924\B probe with 2” dia float for leak rate of 0.1 gph. 

Minimum of 1.5 hours using 924\B probe with 4” dia float for leak rate of 0.1 gph. 

Minimum of 4 hours for using Q0400-4xx probe with 4” dia float for leak rate of 0.2 gph. 

Test data are acquired and recorded by system's computer. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a probe containing 5 thermistors. (5 resistance temperature detectors 

(RTDs) for Q0400-4xx probes.

Water Sensor Minimum detectable water level that can be detected by the 2” dia float is 0.75 inch. 

Minimum detectable water level that can be detected by the 4” dia float is 0.848 inch. 

Minimum detectable change in water level that can be detected by the 2” dia float is 0.080 inch. 

Minimum detectable change in water level that can be detected by the 4” dia float is 0.043 inch.

Calibration Thermistors (or RTDs) and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains product.

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525-9909 Date of Evaluation: 2/26/08, 12/29/08 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

204

Issue Date: January 11, 2001 

Revision Date: November 13, 2009

OPW Fuel Management Systems 

(originally listed as Emco Electronics, Tuthill Transfer Systems)

EECO System 1000, 1000EG, 1500, 2000, 3000 and Galaxy ATG Systems 

(Q0400-4xx Magnetostrictive Probe or OPW 924/B TLM-B Magnetostrictive Probe)

CONTINUOUS IN-TANK LEAK DETECTION METHOD 

(CONTINUOUS AUTOMATIC TANK GAUGING)

Certification Leak rate of 0.2 gph with PD = 99.1% and PFA = 0.9%. 

Leak 

Threshold

0.1 gph for single and manifolded tank systems. 

A tank system should not be declared tight and a message printed for the operator, if the test results indicate a 

loss or gain that exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

The system is designed primarily for use with petroleum fuels. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 35,000 gallons for single tanks and for up to 2 tanks manifolded together. 

Throughput Monthly maximum of 130,000 gallons. 

Waiting Time Minimum of 6 hours stabilization time is allowed between delivery and data collection. 

Test Period Average data collection time is 12 days. 

During evaluation, data collection time ranged from 1 to 31 days. 

Data sampling frequency is at least once per minute. 

System collects data at naturally occurring product levels without interfering with normal tank operation and 

discards data from unstable periods when system performs test. 

Temperature Average for product is determined by a minimum of 5 sensors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.66 inch. 

Minimum detectable change in water level is 0.039 inch. 

Calibration Temperature sensors are factory calibrated. 

Probe must be checked and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments System reports a result of "pass" or "fail." 

Evaluated using both single and manifolded tank systems with probes in each tank. 

Data can be collected when the product level is between 9% and 94.9% of tank volume. 

System distinguishes large leak rates (> 1gph) from dispensing activities and reports those as "fail". 

For valid monthly testing, a conclusive test report must be produced for each tank every month. 

System warns operator if there are no "passing" tests completed during the month. 

For very active tanks, a tank shut down may become necessary in order for the system to collect enough quiettime data for a test. 

The 6-hour stabilization period after delivery may result in the system not testing the top portion of a very active 

tank. In this situation, a periodic test in the shut-down mode with a high product level should be used to test the 

entire portion of tank that routinely contains product. 

Because the database for evaluation of the system did not include sites with vapor recovery, certification is 

limited to sites with no vapor recovery. 

Evaluated using gasoline. 

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525 Dates of Evaluation: 03/13/00 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

205

Issue Date: June 2, 2004 

Revision Date: May 26, 2006 

OPW Fuel Management Systems 

(originally listed as Advanced Fuel Filtration Systems, Inc.)

Continuous Vacuum Monitoring System (CVMS) 

CONTINUOUS INTERSTITIAL TANK SYSTEM MONITORING METHOD (PRESSURE/VACUUM)

Certification: 

Certified as equivalent to European leak detection standard EN-13160-2, Part 2, as a Class I leak detection system. 

Operating Principle:

System uses vacuum generated by the turbine pump to continuously maintain a partial vacuum within the interstitial 

space of double-walled tanks and double-walled piping. 

System is designed to activate a visual and acoustic alarm and optional turbine pump shutdown before stored 

product can escape to the environment, and is capable of detecting breaches in both the inner and outer walls of 

double-walled tanks and double-walled piping. 

Alarm Condition: 

System alarms when a liquid or air leak occurs which causes the interstitial vacuum to decrease (pressure to 

increase) and the system is unable to maintain minimum vacuum. System will also alarm if liquid is detected in the 

interstitial space, or if the vacuum level decreases to the designated "Pump On" pressure a fixed number of times 

within a designated time period. The current default values are 2 times within 5 minutes, but a qualified technician 

may adjust these values at the time of installation. Maximum values shall not exceed 24 times within 60 

minutes.

Applicability:

Underground double-walled tank, connected double-walled piping, and other connected interstitial spaces where tank 

and piping contain gasoline, gasohol, diesel, heating oil #2, kerosene, aviation fuel, motor oil, water. 

Manufacturer’s Specifications: 

Leak detector operates at a vacuum level between 20” and 120" H2O column (-0.72 and -4.33 psi.). The interstitial 

space shall be rated for the operating vacuum of the leak detector, regardless of temperature and groundwater level 

fluctuations. Volume of monitored interstitial space must not exceed 8 m3

 for tanks and 10 m3 for piping. Suction 

line must be located at lowest point of interstitial space.

Calibration: 

Functional and operational safety tests must be performed annually in accordance with manufacturer’s instructions. 

Comments:

Interstitial space is tested continuously. 

System is connected to the interstitial space by a suction line and a pressure measuring (vacuum sensing) line. 

Vacuum is generated by the turbine pump, and is measured and controlled by a differential pressure switch. 

Vacuum (air) leaks can be traced to a specific containment area using a permanently installed vacuum dial gauge assembly 

(optional). 

System should be installed with a vacuum dial gauge at the point furthest from the source of the vacuum. 

This system may not be compatible with all secondarily contained tanks and/or piping. Always consult with the tank and/or 

piping manufacturer and the manufacturer’s applicable recommended installation practices before installing this system, or 

damage may be caused to the tank or piping by its use. 

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525-9909 Date of Evaluation: 01/05/04, 04/17/06 

Tel: 708-485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

206

Issue Date: November 22, 1995 

Revision Date: October 18, 2002 

OPW Fuel Management Systems 

(originally listed as Emco Electronics, Tuthill Transfer Systems)

EECO System, Leak Sensor II, Leak Sensor Jr. 

Thermistor and Proximity probes

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: thermal conductivity, proximity switch 

Test Results:

EECO System unleaded gasoline synthetic gasoline

Detection time (sec) <5 <5 

Fall time manual reset manual reset 

Lower detection limits (cm) 

 Thermistor 1.22 1.12 

 Proximity 0.97 1.04 

Leak Sensor II 

Detection time (sec) <5 <5 

Fall time manual reset manual reset 

Lower detection limits (cm) 

 Thermistor 1.14 1.14 

 Proximity 1.12 1.17 

Leak Sensor Jr. 

Detection time (sec) <5 <5 

Fall time manual reset manual reset 

Lower detection limits (cm) 

 Thermistor 1.24 1.19 

 Proximity 1.12 1.17 

Specificity Results (in addition to above):

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s), water. 

Comments:

Sensors are reusable. 

Systems alarm if either water or product leaks into interstitial space. 

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525 Date of Evaluation: 11/09/92 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

207

Issue Date: November 14, 1997 

Revision Date: October 18, 2002 

OPW Fuel Management Systems 

(originally listed as Emco Electronics, Tuthill Transfer Systems)

EECO 2000, 3000, Leak Sensor II, Leak Sensor Jr. Systems 

with Q0001-005 Interstitial Space Flood Sensor 

and 

 EECO 1500, 2000, 3000 Systems 

with Q0003-005 Wet Interstitial Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch

Test Results:

Q0001-005 Interstitial unleaded gasoline diesel water

Space Flood Sensor high* low* high low high low

Lower detection limit (cm) 31.06 5.49 30.78 5.36 30.35 5.03 

Detection time (sec) <1 <1 <1 <1 <1 <1 

Fall time (sec) <1 <1 <1 <1 <1 <1 

Q0003-005 Wet 

Interstitial 

Sensor

Lower detection limit (cm) 30.73 6.73 30.78 6.60 30.12 4.29 

Detection time (sec) <1 <1 <1 <1 <1 <1 

Fall time (sec) <1 <1 <1 <1 <1 <1 

*The "high" and "low" refer to high and low level alarm points of hydrostatic sensors. 

Specificity Results: 

Evaluator claims sensors will respond to any liquid.

Manufacturer’s Specifications:

Temperature range: -13 to 158F (-25 to 70C). 

Interstitial liquid level should be adjusted to center of sensor. 

Comments: 

Primary use is interstitial or annular space of a double-walled tank partially filled with brine solution. 

Activates alarm if solution level exceeds upper or lower limits. 

Sensors are reusable. 

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525 Date of Evaluation: 10/18/96 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

208

Issue Date: November 14, 1997 

Revision Date: October 18, 2002 

OPW Fuel Management Systems 

(originally listed as Emco Electronics, Tuthill Transfer Systems)

EECO 1500, 2000, 3000 Systems Q0003-001 Discriminating Dispenser Pan Sensor, Q0003-

002 Discriminating STP Sump Sensor, Q0003-003 Discriminating Interstitial Sensor, 

Q0003-006 Liquid Only Interstitial Sensor, Q0003-009 Liquid Float Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch and polymer strip (Q0003-001, Q0003-002), optical prism and conductivity 

(Q0003-003), optical prism (Q0003-006), float switch (Q0003-009) 

Test Results:

Q0003-001 Discriminating unleaded gasoline diesel water

Dispenser Pan Sensor 

(float switch, polymer strip)

high* low* high low high low

Lower detection limit (cm) 19.91 3.38 19.86 3.30 19.66 3.20 

Detection time (sec) 1-24hr 1-24hr <1 <1 <1 <1 

Fall time (sec) clean clean clean clean <1 <1 

Q0003-002 Discriminating STP Sump 

Sensor (float switch, polymer strip) 

Lower detection limit (cm) 28.37 3.12 28.24 3.07 28.04 3.00 

Detection time (sec) 1-24hr 1-24hr <1 <1 <1 <1 

Fall time (sec) clean clean clean clean <1 <1 

Q0003-003 Discriminating Interstitial 

Sensor (optical prism, conductivity) 

Lower detection limit (cm) 1.68 1.68 1.85 

Detection time (hr) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Q0003-006 Liquid Only Interstitial 

Sensor (optical prism) 

Lower detection limit (cm) 1.35 1.55 1.78 

Detection time (hr) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Q0003-009 Liquid Float Sensor 

(float switch) 

Lower detection limit (cm) 2.54 2.49 2.21 

Detection time (hr) <1 <1 <1 

Fall time (sec) <1 <1 <1 

*The "high" and "low" refer to high and low level alarm points of hydrostatic sensors. 

Specificity Results: 

Evaluator claims sensors will respond to any liquid. 

Comments: 

Q0003-001 and Q0003-002 sensors must be cleaned with rubbing alcohol, or dish soap and water after exposure to 

product. 

Sensors are reusable if not completely saturated with product. 

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525 Date of Evaluation: 10/18/96 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

209

Issue Date: November 22, 1995 

Revision Date: October 18, 2002 

OPW Fuel Management Systems 

(originally listed as Petro Vend, Inc.)

Petrosentry IV, Petrosentry VIII, SiteSentinel with 

Liquid Sensor, Universal Sump Sensor, Universal Reservoir Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: thermal conductivity (Liquid Sensor), 

float switch (Universal Sump Sensor, Universal Reservoir Sensor) 

Test Results:

Liquid Sensor unleaded gasoline

Response time (min) 0.51 

Recovery time (min) <1 

Product activation height (cm) 0.35 

Lower detection limit (cm) 0.76 

Universal Sump Sensor 

Response time (min) 8.32 

Recovery time (min) <1 

Product activation height (cm) 3.37 

Lower detection limit (cm) 3.97 

Universal Reservoir Sensor 

50% by weight 

ethylene glycol in water

30% by weight 

calcium chloride in water

high* low* high low

Response time (min) 19.62 16.86 17.77 15.91 

Recovery time (min) <1 <1 <1 <1 

Product activation height (cm) 20.9 5.90 20.5 5.95 

*The "high" and "low" refer to high and low level alarm points of hydrostatic sensors. 

 

Specificity Results (in addition to above for Liquid Sensor and Universal Sump Sensor):

Activated: diesel, synthetic gasoline, heating oil #2, water. 

Comments:

Universal Reservoir Sensor is intended to monitor level of either ethylene glycol or calcium chloride 

solutions in the interstitial or annular space of a double-walled tank. 

Universal Reservoir Sensor activates an alarm if any significant gain or loss of solution occurs. 

Sensors are reusable. 

OPW Fuel Management Systems Evaluator: Carnegie Mellon Research Institute 

6900 Santa Fe Dr. Tel: (412) 268-3495 

Hodgkins, IL 60525-9909 Date of Evaluation: 10/15/92 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

210

Issue Date: November 7, 2001 

Revision Date: October 18, 2002

OPW Fuel Management Systems 

(originally listed as Petro Vend, Inc.)

SiteSentinel Controller with Combination Sensors 

Part #30-3224 (Consists of Part #30-3221-1A, #30-3219-12), 

Part #30-3225 (Consists of Part #30-3221-2, #30-3219-12)

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch (part #30-3221-1A, #30-3221-2), 

 product permeable (part #30-3219-12) 

Part #30-3224, Part #30-3225 unleaded gasoline diesel

Detection time (min) 13.602 24.104 

Fall time * ** 

* Sensor must be cleaned and dried when exposed to hydrocarbons. 

** Sensor must be replaced or threshold needs to be reset when exposed to diesel.

Specificity Results:

Evaluator indicates that sensors respond only to hydrocarbons. 

Comments:

Evaluator indicates that since each of the sensors use the same polymer material; the results can be 

applied to any sensor with this material. 

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525-9909 Date of Evaluation: 8/3/00 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

211

Issue Date: November 22, 1995 

Revision Date: October 18, 2002 

OPW Fuel Management Systems 

(originally listed as Petro Vend, Inc.)

SiteSentinel Controller with Hydrocarbon Sensitive Polymer Cables 

Part #30-3206, Part #30-3207-nn, Part #30-3210-nn, Part #30-3219-12

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: product permeable

Test Results:

Part #30-3206, 

Part #30-3207-nn***, 

Part #30-3210-nn***, 

Part #30-3219-12 unleaded gasoline diesel

Detection time (min) 13.602 24.104 

Fall time (min) * ** 

* Sensor must be cleaned and dried when exposed to hydrocarbons. 

** Sensor must be replaced or threshold needs to be reset when exposed to diesel.

*** “nn” denotes a variable length in feet. 

Specificity Results:

Evaluator indicates that sensors respond only to hydrocarbons. 

Comments: 

Evaluator indicates that since each of the sensors use the same polymer material, the results can be 

applied to any sensor with this material. 

OPW Fuel Management Systems Evaluator: Underwriters Laboratories, Inc. 

6900 Santa Fe Dr. Tel: (847) 272-8800 

Hodgkins, IL 60525-9909 Date of Evaluation: 12/10/92 

Tel: (708) 485-4200 Evaluator: Ken Wilcox Associates 

E-Mail: info@opwfms.com Tel: (816) 443-2494 

URL: www.opwfms.com Date of Evaluation: 12/10/92, 8/3/00 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

212

Issue Date: November 7, 2001 

Revision Date: August 18, 2005

OPW Fuel Management Systems

(originally listed as Petro Vend, Inc.)

SiteSentinel Controller with 

Optical Sensor Part #30-3223

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: Optical (Part #30-3223) 

Test Results:

unleaded gasoline diesel water

Part #30-3223 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 0.571 0.561 0.592 

Specificity Results:

Part #3223 works with any liquid. 

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525-9909 Date of Evaluation: 8/3/00 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

213

Issue Date: November 7, 2001 

Revision Date: October 18, 2002

OPW Fuel Management Systems 

(originally listed as Petro Vend, Inc.)

SiteSentinel Controller with 

Single Float Switches Part #30-3221-1, Part #30-3221-1A, Part #30-3221-1B 

Brine Reservoir Sensor and Dual Float Sensor Part #30-3221-2 

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch

Part #30-3221-1 unleaded gasoline diesel water

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 1.225 1.171 1.123 

Part #30-3221-1A 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 1.513 1.487 1.375 

Part #30-3221-1B 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 0.876 0.828 0.562 

Part #30-3221-2 (Brine Reservoir Sensor) 

Detection time (sec) - - <1 

Fall time (sec) - - <1 

Low level alarm - Lower detection limit (in) - - 2.495 

High level alarm - Lower detection limit (in) - - 10.389 

Part #30-3221-2 (Dual Float Sensor) 

Detection time (sec) - - <1 

Fall time (sec) - - <1 

Low level alarm - Lower detection limit (in) - - 2.533 

High level alarm - Lower detection limit (in) - - 10.492 

Specificity Results:

Evaluator indicates that single float sensors work with any liquid.

Comments: 

Evaluator indicates that Sensor Part #30-3221-2 can operate either as a brine reservoir sensor or a dual 

float sensor based on orientation of the lower float. 

OPW Fuel Management Systems Evaluator: Ken Wilcox Associates 

6900 Santa Fe Dr. Tel: (816) 443-2494 

Hodgkins, IL 60525-9909 Date of Evaluation: 8/3/00 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

214

Issue Date: November 14, 1997 

Revision Date: October 18, 2002 

OPW Fuel Management Systems 

(originally listed as Emco Electronics, Tuthill Transfer Systems)

EECO 1500, 2000, 3000, Leak Sensor, Leak Sensor II, Leak Sensor Jr. 

with Q0002-001, Q00002-005 Sensors

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: adsistor (Q0002-001sensor), metal oxide semiconductor (Q0002-005 sensor) 

Test Results:

Q0002-001 Sensor unleaded gasoline synthetic gasoline JP-4 jet fuel

Accuracy*

 (%) 100 100 

Detection time*

 (min:sec) 19:32 09:16 

Fall time*

 (hh:mm:ss) 00:32:30 >01:05:33 

Lower detection limit (ppm) 1000 500 

Q0002-005 Sensor 

Accuracy*

 (%) 100 100 100 

Detection time*

 (min:sec) 00:30 00:28 01:01 

Fall time*

 (min:sec) 03:34 02:40 05:33 

Lower detection limit (ppm) 100 100 100 

 

*For tests conducted with 1000 ppm of test gas. 

** See Glossary 

Specificity Results (in addition to above):

Activated: n-hexane, toluene, xylene(s). 

Comments: 

Q0002-001 sensor is not for use with synthetic gasoline. 

OPW Fuel Management Systems Evaluator: Carnegie Mellon Research Institute 

6900 Santa Fe Dr. Tel: (412) 268-3495 

Hodgkins, IL 60525 Date of Evaluation: 11/12/96, 10/18/96 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

215

Issue Date: November 22, 1995 

Revision Date: October 18, 2002

OPW Fuel Management Systems 

(originally listed as Petro Vend, Inc.)

Petrosentry TLD III, SiteSentinel Smart Module and Vapor Sensor

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: metal oxide semiconductor 

Test Results:

Petrosentry TLD III benzene 2-methylbutane

Detection time (sec) 5 16 

Fall time (min:sec) 4:12 0:42 

Lower detection limit (ppm) 12.5 12.5 

SiteSentinel Smart 

Module and Vapor Sensor unleaded gasoline synthetic gasoline JP-4 jet fuel

Detection time (sec) 5 7 10 

Fall time (min:sec) 6:30 3:35 4:26 

Lower detection limit (ppm) 10 10 10 

Specificity Results (in addition to above for Petrosentry TLD III):

Activated: n-hexane, toluene, n-butane, isobutane, 2-methylpentane. 

Specificity Results (in addition to above for SiteSentinal Smart Module and Vapor Sensor):

Activated: n-hexane, toluene, xylene(s). 

Manufacturer’s specifications:

Petrosentry TLD III maximum wire distance: 500 ft using 18 AWG 

OPW Fuel Management Systems Evaluator: Carnegie Mellon Research Institute 

6900 Santa Fe Dr. Tel: (412) 268-3495 

Hodgkins, IL 60525-9909 Dates of Evaluation: 03/26/91, 04/16/92 

Tel: (708) 485-4200 

E-Mail: info@opwfms.com 

URL: www.opwfms.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

216

Issue Date: November 22, 1995 

Revision Date: March 10, 2000 

Patriot Sensors and Controls Corp. 

(originally listed as MagneTek)

7021 Digital Tank Gauge 

(7030 Series Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.96% and PFA = 0.044%. 

Leak rate of 0.1 gph with PD = 95.34% and PFA = 4.66%. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density and where specific gravity is > 0.6 

and viscosity is < 1500 cp may be tested after consultation with manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full for leak rate of 0.2 gph. 

Tank must have minimum product height of 18 inches, or be 14% full, whichever is higher, for 

leak rate of 0.1 gph. 

Waiting Time Minimum of 2 hours between delivery and testing for leak rate of 0.2 gph. 

Minimum of 8 hours between delivery and testing for leak rate of 0.1 gph. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 4 hours. 

Test data are acquired and recorded by a 7021 controller (computer). 

Leak rate is calculated from data determined to be statistically valid. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 1 resistance temperature detector (RTD). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.947 inch. 

Minimum detectable water level change is 0.0254 inch. 

Calibration RTD and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. As product level is lowered, leak rate in a leaking 

tank decreases (due to lower head pressure). Consistent testing at low levels could allow a leak to 

remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

Patriot Sensors and Controls Corp. Evaluator: Ken Wilcox Associates 

1080 N. Crooks Rd. Tel: (816) 443-2494 

Clawson, MI 48017-1097 Date of Evaluation: 02/07/91 

Tel: (810) 435-0700 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

217

Issue Date: November 22, 1995 

Revision Date: March 10, 2000 

Patriot Sensors and Controls Corp. 

(originally listed as MagneTek)

7021 Digital Tank Gauge 

(7100 Series Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1%. 

Leak rate of 0.1 gph with PD = 99.6% and PFA = 0.4%. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density and where specific gravity is 

> 0.6 and viscosity is < 1500 cp may be tested after consultation with manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 2 hours between delivery and testing. 

Minimum of 2 hours between dispensing and testing. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 2 hours for leak rate of 0.2 gph. 

Minimum of 6 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 thermistors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.186 inch. 

Minimum detectable water level change is 0.0048 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Patriot Sensors and Controls Corp. Evaluator: Ken Wilcox Associates 

1080 N. Crooks Rd. Tel: (816) 443-2494 

Clawson, MI 48017-1097 Date of Evaluation: 03/14/95 

Tel: (810) 435-0700 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

218

Issue Date: June 17, 2008

PermAlert

LiquidWatch Leak Detection System LW64-IS with PHLR-LW and PHLR-P-LW 

Hydrocarbon Probes

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: product permeable, magnetic membrane switch 

Test Results:

PHLR-LW and PHLR-P-LW 

Hydrocarbon Probes

unleaded gasoline

Response time (sec) 24 

Recovery time (hour) >16 

Product activation height (mm) 2.0 

Lower detection limit (mm) 3.9 

Specificity Results (in addition to above):

Activated: diesel, jet fuel. 

Not activated: water. 

Comments:

Sensors are reusable. 

“PHLR-LW” sensors are designed for operation in ambient pressure environments while 

“PHLR-P-LW” sensors are designed for operation in pressurized environments.

PermAlert Evaluator: Trace Laboratories 

7720 N. Lehigh Ave. Tel: (847) 934-5300 

Niles, IL 60714-3491 Date of Evaluation: 02/23/07 

Tel: (847) 966-2235 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

219

Issue Date: November 22, 1995 

Revision Date: April 18, 1997 

PermAlert

PAL-AT Models AT20C, AT50C, AT40K with PHL Hydrocarbon Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: electrical conductivity 

Test Results:

unleaded gasoline

Response time (min) 1.13 

Recovery time (min) 8.83 

Product activation height (cm) 0.53 

Lower detection limit (cm) 0.38 

Specificity Results (in addition to above):

Activated: synthetic gasoline, diesel, heating oil #2. 

Not activated: water. 

Comments:

Sensors are reusable. 

PermAlert Evaluator: Carnegie Mellon Research Institute 

7720 N. Lehigh Ave. Tel: (412) 268-3495 

Niles, IL 60714-3491 Date of Evaluation: 02/05/92 

Tel: (847) 966-2235 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

220

Issue Date: June 17, 2008

PermAlert

PAL-AT Models AT20C, AT50C, AT20K, AT40K, AT80K with PHLR-S/L and PHLR-P-S/L 

Hydrocarbon Probes

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: product permeable, magnetic membrane switch 

Test Results:

PHLR-S/L and PHLR-P-S/L 

Hydrocarbon Probes

unleaded gasoline

Response time (sec) 24 

Recovery time (hour) >16 

Product activation height (mm) 2.0 

Lower detection limit (mm) 3.9 

Specificity Results (in addition to above):

Activated: diesel, jet fuel. 

Not activated: water. 

Comments:

Sensors are reusable. 

“PHLR-S/L” sensors are designed for operation in ambient pressure environments while 

“PHLR-P-S/L” sensors are designed for operation in pressurized environments.

PermAlert Evaluator: Trace Laboratories 

7720 N. Lehigh Ave. Tel: (847) 934-5300 

Niles, IL 60714-3491 Date of Evaluation: 02/23/07 

Tel: (847) 966-2235 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

221

Issue Date: November 22, 1995 

Revision Date: March 10, 2000

PermAlert

TankWatch Models PHM10, PHMS with Combination Hydrocarbon/Water Probe, 

Hydrocarbon Probe

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: electrical conductivity 

Test Results:

Combination 

Hydrocarbon/Water Probe unleaded gasoline water

Response time (min) 0.30 <1 

Recovery time (min) 1.97 1.68 

Product activation height (cm) 0.18 0.80 

Lower detection limit (cm) 0.56 1.93 

Hydrocarbon Probe 

Response time (min) 0.25 

Recovery time (min) 2.33 

Product activation height (cm) 0.17 

Lower detection limit (cm) 0.38 

 

Specificity Results (in addition to above):

Activated: synthetic gasoline, diesel, heating oil #2. 

Comments:

Sensors are reusable. 

Hydrocarbon probe is not activated by water. 

Hydrocarbon/water probe does not discriminate between gasoline and water. 

PermAlert Evaluator: Carnegie Mellon Research Institute 

7720 N. Lehigh Ave. Tel: (412) 268-3495 

Niles, IL 60714-3491 Date of Evaluation: 06/16/92 

Tel: (847) 966-2235 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

222

Issue Date: November 22, 1995 

Revision Date: March 10, 2000 

PermAlert

PAL-AT Models AT20C, AT50C, AT40K with AGW Sensor Cable, 

TFH Hydrocarbon Sensor Cable

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: impedance change 

Test Results: 

unleaded gasoline

AGW Sensor Cable 

1/3 MER* 

1348 ft

2/3 MER 

2644 ft

MER 

3982 ft

Response time (min) 9.92 6.25 21.28 

Recovery time (min) 1.0 1.0 1.0 

Product activation height (cm) 2.03 1.13 5.00 

Detection length (cm) 116.3 64.8 286.1 

Lower detection limits (cm) 

 Product activation height N/D* N/D 5.1 

 Detection length N/D N/D 295.6 

TFH Hydrocarbon Sensor Cable 

1/3 MER 

1368 ft

2/3 MER 

2685 ft

MER 

4046 ft

Response time (min) 3.40 7.48 16.21 

Product activation height (cm) 0.65 1.33 3.53 

Detection length (cm) 27.7 56.8 150.4 

Lower detection limits (cm) 

 Product activation height N/D N/D 3.6 

 Detection length N/D N/D 152.9 

 

* See glossary. 

Specificity Results (in addition to above):

Activated: synthetic gasoline, diesel, heating oil #2, water (AGW Sensor Cable only). 

Comments: 

System can monitor interstitial spaces. 

Evaluations also covered quantitative leak location. 

AGW Sensor Cable is reusable. 

TFH Hydrocarbon Sensor Cable is not reusable. 

Lower detection limit is calculated at MER only. Cable is assumed to be equally or more sensitive at 

shorter lengths. 

PermAlert Evaluator: Carnegie Mellon Research Institute 

7720 N. Lehigh Ave. Tel: (412) 268-3495 

Niles, IL 60714-3491 Dates of Evaluation: 01/17/92, 02/11/92 

Tel: (847) 966-2235 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

223

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

PermAlert

PAL-AT Models AT20C, AT50C, AT40K with PHFW Hydrocarbon Probe 

and Type 1 or Type 2 Sensor

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: product soluble 

Test Results:

Type 1 Sensor unleaded gasoline synthetic gasoline

Detection time (sec) 24 9 

Fall time N/A* N/A 

Lower detection limit (cm) 0.01 0.01 

Type 2 Sensor 

Detection time (min:sec) 14:39 08:45 

Fall time N/A N/A 

Lower detection limit (cm) 0.01 0.01 

* See glossary. 

Specificity Results (in addition to above):

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s). 

Manufacturer’s specifications:

Operating temperature range is 0 degrees F to 90 degrees F. 

Comments:

Sensors are not reusable; sensor filament must be replaced after contact with hydrocarbons. 

PermAlert Evaluator: Carnegie Mellon Research Institute 

7720 N. Lehigh Ave. Tel: (412) 268-3495 

Niles, IL 60714-3491 Date of Evaluation: 09/15/92 

Tel: (847) 966-2235 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

224

Issue Date: November 22, 1995 

Revision Date: July 23, 2003

Phoenix Technologies Division of Phoenix Group 

(formerly listed as Arizona Instrument Corp. and NESCO)

Encompass MTS IPAM #17-903 

(Magnetostrictive Probe #17-9300)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 97.80% and PFA = 2.2%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 3 hours between delivery and testing. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 6 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 resistance temperature detectors 

(RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.29 inches. 

Minimum detectable change in water level is 0.0034 inch. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. Encompass software provides for remote access capabilities. 

Phoenix Technologies Division of Phoenix Group Evaluator: Ken Wilcox Associates 

2125 South 48th Street, Suite 106 Tel: (816) 443-2494 

Tempe, AZ 85282 Date of Evaluation: 08/22/94 

Tel: (877) 890-3808 

E-mail: sales@opsmart.net 

URL: www.opsmart.net 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

225

Issue Date: November 22, 1995 

Revision Date: July 23, 2003

Phoenix Technologies Division of Phoenix Group 

(formerly listed as Arizona Instrument Corp. and NESCO)

Encompass USF IPAM #17-901 

(Ultrasonic Probe #17-9100)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.94% and PFA = 2.06%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 3 hours between delivery and testing. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 6 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is obtained by a single temperature sensor that measures change in 

ultrasonic wave velocity. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.86 inches. 

Minimum detectable change in water level is 0.012 inch. 

Calibration Temperature sensor and probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Encompass software provides for remote access capabilities. 

Phoenix Technologies Division of Phoenix Group Evaluator: Ken Wilcox Associates 

2125 South 48th Street, Suite 106 Tel: (816) 443-2494 

Tempe, AZ 85282 Date of Evaluation: 08/22/94 

Tel: (877) 890-3808 

E-mail: sales@opsmart.net 

URL: www.opsmart.net 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

226

Issue Date: December 21, 2005

PID Analyzers, LLC 

Model 102 Photoionizer

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: quantitative 

Sampling frequency: intermittent 

Operating principle: photoionization detector 

Test Results:

Model 102 unleaded gasoline Benzene 2-Methylbutane

Accuracy*

 (%) - average reading 85 (423 ppm) 112.8 (1125.2 ppm) 8.1 (78.2 ppm) 

Detection time*

 (sec) <120 11 12 

Fall time*

 (sec) <120 38 11 

Lower detection limit (ppm) Not Reported 2.1 5.8 

 

*For tests conducted with 1000 ppm of test gas 

Specificity Results (in addition to above):

Activated: n-butane, n-hexane, iso-butane, 3-methylpentane, toluene 

PID Analyzers, LLC Evaluator: Ken Wilcox Associates 

25 Walpole Park South Drive Tel: (816) 443-2494 

Walpole, MA 02081 Date of Evaluation: 10/29/04 

Tel: (508) 660-5001 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

227

Issue Date: January 11, 2001 

Revision Date: December 21, 2005

PID Analyzers, LLC 

(originally listed as HNU Systems, Inc.) 

PI-101 with 11.7 EV Probe #101397, HW-101 with 11.7 EV Probe #170214, ISPI-101 with 

10.2 EV Probe #111100, DL-101 with 10.2 EV Probe #167085

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: quantitative 

Sampling frequency: intermittent 

Operating principle: photoionization detector 

Test Results:

PI-101 unleaded gasoline synthetic gasoline JP-4 jet fuel

Accuracy*

 (%) - average reading 29.1 (730 ppm) 12.3 (884 ppm) 29.6 (737 ppm) 

Detection time*

 (sec) 31 21 26 

Fall time*

 (sec) 52 14 49 

Lower detection limit (ppm) 14.2 11.7 29.7 

HW-101 

Accuracy*

 (%) - average reading 12.6 (888 ppm) 8.5 (1076 ppm) 5.7 (953 ppm) 

Detection time*

 (sec) 20 25 24 

Fall time*

 (sec) 49 10 49 

Lower detection limit (ppm) 31.8 21.1 26.8 

ISPI-101 

Accuracy*

 (%) - average reading 63.6 (360 ppm) 59.1 (415 ppm) 70.8 (300 ppm) 

Detection time*

 (sec) 20 21 35 

Fall time*

 (sec) 40 10 37 

Lower detection limit (ppm) 2.3 5.8 5.1 

DL-101 

Accuracy*

 (%) 63.3 56.2 59.5 

Detection time*

 (sec) 45 22 51 

Fall time*

 (min:sec) 01:03 00:14 01:01 

Lower detection limit (ppm) 11.0 5.8 5.0 

 

*For tests conducted with 1000 ppm of test gas 

Specificity Results (in addition to above):

Activated: n-hexane, toluene, xylene(s) 

PID Analyzers, LLC Evaluator: Carnegie Mellon Research Institute 

25 Walpole Park South Drive Tel: (412) 268-3495 

Walpole, MA 02081 Dates of Evaluation: 02/5/92, 02/5/92, 03/5/92, 

Tel: (508) 660-5001 11/28/91 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

228

Issue Date: August 23, 1999 

Revision Date: March 10, 2000 

Pneumercator Company, Inc.

TMS 2000, TMS 3000 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.0% and PFA = 5% for 2 hour test. 

Leak rate of 0.2 gph with PD = 99.8% and PFA = 0.2% for 4 hour test. 

Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1% for 8 hour test. 

Leak rate of 0.1 gph with PD = 95.3% and PFA = 4.7% for 7 hour test. 

Leak rate of 0.1 gph with PD = 95.8% and PFA = 4.2% for 8 hour test. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 20,000 gallons. 

Tank must be between 20 and 95% full. 

Waiting Time Minimum of 8 hours between delivery and testing. 

Minimum of 20 minutes between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours for leak rate of 0.2 gph. 

Minimum of 7 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by probe which contains 5 thermistors. 

At least one thermistor must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.488 inch. 

Minimum detectable change in water level is 0.124 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is 

a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains 

product. 

Pneumercator Company, Inc. Evaluator: Ken Wilcox Associates 

120 Finn Court Tel: (816) 443-2494 

Farmingdale, NY 11735 Date of Evaluation: 07/15/97 

Tel: (631) 293-8450 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

229

Issue Date: September 19, 2002

Pneumercator Company, Inc.

TMS 2000, TMS 3000 

(Patriot 7100 Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 97.3% and PFA = 2.7%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation 

with the manufacturer. 

Tank Capacity Maximum of 75,000 gallons. Tank must be between 50 and 95% full. 

Waiting Time Minimum of 8 hours between delivery and testing. 

Minimum of 5 minutes between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 8 hours. 

Test data are acquired and recorded by system’s computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by probe which contains 5 thermistors. 

At least one thermistor must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.488 inch. 

Minimum detectable change in water level is 0.124 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

TMS 2000 and TMS 3000 controller are identical except that the TMS 3000 console has more input 

contacts. 

The TMS 2000 can monitor up to 2 probes and 8 leak sensors while the TMS 3000 can monitor up 

to 12 probes and 40 leak sensors. 

Pneumercator Company, Inc. Evaluator: Ken Wilcox Associates 

120 Finn Court Tel: (816) 443-2494 

Farmingdale, NY 11735 Date of Evaluation: 01/30/01 

Tel: (631) 293-8450 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

230

Issue Date: April 18, 1997 

Revision Date: August 10, 2001 

Pneumercator Company, Inc.

LC 1000 Series, E-14-29, E-700-1, LDE-700, LDE-740, TMS 2000, TMS 3000 with 

Level Sensor Models LS600AB, LS600LDBN, LS610, RSU800

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch 

Test Results: 

LS600AB unleaded gasoline diesel water

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 3.32 3.28 3.18 

LS600LDBN 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 0.99 0.97 0.87 

LS610 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 0.44 0.43 0.42 

RSU800 (low level) 

Detection time (min) <1 <1 <1 

Fall time (min) <1 <1 <1 

Lower detection limit (ppm) 2.57 2.53 2.31 

RSU800 (high level)

Detection time (min) <1 <1 <1 

Fall time (min) <1 <1 <1 

Lower detection limit (ppm) 13.31 13.24 13.01 

Specificity Results:

Manufacturer and evaluator claim sensor will respond to any liquid. 

Comments:

Sensors are reusable. 

Pneumercator Company, Inc. Evaluator: Ken Wilcox Associates 

120 Finn Court Tel: (816) 443-2494 

Farmingdale, NY 11735 Date of Evaluation: 01/22/96 

Tel: (631) 293-8450 (Revised 03/02/01) 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

231

Issue Date: November 22, 1995 

Revision Date: January 11, 2001 

Pneumercator Company, Inc.

LDE 700, LDE 740, LDE 9000 with Sensor Probe Models 9-901, 9-902, 9-903

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: capacitance 

Test Results:

unleaded gasoline synthetic gasoline

Detection time (sec) <1 <1 

Fall time manual reset manual reset 

Lower detection limit (cm) 

 9-901 0.32 0.36 

 9-902 0.36 0.34 

 9-903 0.76 0.74 

Specificity Results (in addition to above):

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s), water. 

Comments:

Sensors are reusable. 

Capacitance probes do not work with oxygenated fuels. 

Pneumercator Company, Inc. Evaluator: Ken Wilcox Associates 

120 Finn Court Tel: (816) 443-2494 

Farmingdale, NY 11735 Date of Evaluation: 12/14/93 

Tel: (631) 293-8450 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

232

Issue Date: August 10, 2001 

Pneumercator Company, Inc.

TMS 2000, TMS 3000 with ES820-100 Non-Discriminating Liquid Sensor, ES820-200 

Discriminating Liquid Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: optical sensor 

Test Results:

ES820-100 NonDiscriminating Liquid Sensor unleaded gasoline diesel water

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 0.35 0.34 0.35 

ES820-200 Discriminating 

Liquid Sensor 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 0.36 0.38 0.39 

Specificity Results:

Manufacturer claims sensors will respond to any liquid. 

Pneumercator Company, Inc. Evaluator: Ken Wilcox Associates 

120 Finn Court Tel: (816) 443-2494 

Farmingdale, NY 11735 Date of Evaluation: 01/22/96 

Tel: (631) 293-8450 (Revised 03/02/01) 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

233

Issue Date: March 1, 2002

Pneumercator Company, Inc.

TMS 2000, TMS 3000 with 

ES825-100(F) Non-Discriminating Liquid Sensor, ES825-200(F) Discriminating Liquid Sensor 

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: optical sensor, electrical conductivity 

Test Results:

ES825-100(F) NonDiscriminating Liquid Sensor unleaded gasoline diesel water

Detection time (sec) 0.0226 0.0345 0.0172 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 0.520 0.477 0.511 

ES825-200(F) Discriminating 

Liquid Sensor 

Detection time (sec) 0.0268 0.0438 0.0381 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 0.401 0.365 0.416 

Specificity Results:

Manufacturer claims sensors will respond to any liquid after sensor’s threshold is exceeded. 

Manufacturer’s Specifications:

Both of the sensors are designed to connect to a controller system that indicates the status of the 

sensor. 

Manufacturer indicates that discriminating sensor ES 825-200(F) incorporates an optical liquid sensor 

and a conductivity sensor. The sensor discriminates between product and water by determining if the 

optical sensor, which responds to any liquid, or the conductivity sensor, which responds only to water, 

causes an alarm. 

Pneumercator Company, Inc. Evaluator: Ken Wilcox Associates 

120 Finn Court Tel: (816) 443-2494 

Farmingdale, NY 11735 Date of Evaluation: 08/04/01 

Tel: (631) 293-8450 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

234

Issue Date: September 7, 2005 

Revision Date: July 13, 2007 

Praxair Services, Inc.

Tracer Tight For Large Aboveground Storage Tank Systems

ABOVEGROUND STORAGE TANK LEAK DETECTION METHOD

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak rate of 0.005 gph with PD = 97% and PFA = 2.9%. 

The US EPA has not set a minimum detectable leak rate for aboveground storage tank systems at 

the time of this evaluation.

Leak 

Threshold

A tank system should not be declared tight when tracer chemical greater than the background level is detected 

outside of the tank system. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil, crude oil. 

Other fluids which are compatible and soluble with an acceptable tracer chemical may be tested after 

consultation with the manufacturer. 

Tank Capacity Not limited by capacity. 

Waiting Time Ranges from 7 to 30 days after tracer is added to tank without support of on-site leak simulation. 

The waiting period may be adjusted below this range when supported by on-site leak simulations performed as 

described below. 

Leak 

Simulations

The release of surrogate tracer into the soil beneath the tank to evaluate the migration of a tracer and the 

sensitivity of the test under on-site sub-surface conditions. Sub-surface conditions throughout the test area must 

be at least as favorable as those at the leak simulations location in order to use the results. This requirement 

may be satisfied by sampling the soil beneath the tank, and/or making flow/vacuum measurements from the 

sampling probes. 

Tracer Dosage Dosage of tracer is based on tank size, product volume in tank, and frequency and volume of tank refills 

according to manufacturer's recommendations. 

Permeability Soil permeability must readily allow tracer movement (greater than 1 Darcy). 

The permeability of the soil beneath the tank must be verified by the detection of a leak simulation tracer in a 

sample collected at least 13 feet from the release location. 

Probe Typical probe radius during evaluation was 10 to 12 feet. 

All tank surfaces must be within the zone of influence of a sampling probe. 

Probes must be installed per manufacturer's guidelines. 

Probe radius below an AST can be increased beyond the 10 foot limit when supported by a leak simulation as 

described above. 

Groundwater Depth to groundwater must be at least 2 inches below bottom of tank. 

Groundwater less than 2 inches below bottom of tank may limit effectiveness of test method. 

Comments Tester may determine that pre or post testing is needed to establish the background level of tracer in the soil. 

The presence of a layer of water saturated soil, or frozen soil, may inhibit the effectiveness of the method by 

impeding the transport of the tracer labeled product into the unsaturated zone. 

The system should be installed and operated in accordance with Praxair Services, Inc.’s “AST Testing 

Procedures” document. 

Praxair Services, Inc. Evaluator: Ken Wilcox Associates 

3755 N. Business Center Dr. Tel: (816) 443-2494 

Tucson, AZ 85705 Date of Evaluation: 10/04/90 

Tel: (800) 394-9929 Evaluator: Control Strategies Engineering – out of business 

E-mail: info@praxair.com Tel: Contact Praxair Services, Inc. 

URL: www.praxairservices.com Date of Evaluation: 05/92 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

235

Issue Date: March 10, 2000 

Revision Date: April 17, 2002 

Praxair Services, Inc. 

(originally listed as Tracer Research Corp.)

Tracer ALD 2000 Automated Tank Tightness Test

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

A tank system should not be declared tight when tracer chemical or hydrocarbon greater than the background 

level is detected outside of the tank system. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other fluids which are compatible and soluble with an acceptable tracer chemical may be tested after 

consultation with the manufacturer. 

Tank Capacity Not limited by capacity. 

Waiting Time Ranges from 7 to 30 days (normally 2 weeks) after tracer is added to tank. 

Tracer 

Dosage

Tracer is added to tank manually at tank fill or automatically using a metered injection pump at pipeline flowing 

into tank. 

Manual dosage of tracer is based on tank size, product volume in tank, and frequency and volume of tank refills 

according to manufacturer's recommendations. 

Automated dosage at pipeline flowing into tank is based on pipeline size and flow rate. 

All tanks and piping downstream of the injection point are dosed with tracer compound. 

Permeability Soil permeability must readily allow tracer movement through the tank excavation backfill (greater than 1 Darcy). 

Probe Radius of influence of each tracer sampling probe is maximum 10 feet. 

All tank surfaces must be within the zone of influence of a sampling probe. 

Probes must be installed per Manufacturer's guidelines. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

For test method to detect a release of tracer chemical below groundwater, the hydrostatic pressure of product in 

the tank must exceed the hydrostatic pressure of groundwater during test. 

To accomplish this, product level must be maintained at least 6 inches above groundwater for a minimum of 17 

hours during the first three days following addition of tracer to the tank. 

At the discretion of the regulatory agency, water ingress measuring devices may be used to supplement test 

method in high groundwater conditions. 

Comments The presence of a layer of water saturated soil, that is also frozen, above the location where a leak may exist, 

may inhibit the effectiveness of the method by impeding the transport of the tracer labeled product into the 

unsaturated zone. 

Groundwater above bottom of tank may limit effectiveness of test method (e.g. when applied to tanks containing 

water-miscible products or products whose specific gravity is greater than 1). 

Test method may not be effective in some tank excavation backfill (such as clay) because it may plug holes in 

tank and retard tracer movement through the soil. 

Third party evaluation of the ALD 2000 System tested the device's ability to collect a sample, transport sample 

through 2700 feet of 3/32 inch tubing, and analyze sample. 

Sample collection, analysis, data storage, and alarm activation is controlled by system's computer. 

Prior evaluations tested PD, PFA, leak threshold, dose, tracer movement through soil, and waiting times. 

Praxair Services, Inc. Evaluator: Ken Wilcox Associates 

3755 N. Business Center Dr. Tel: (816) 443-2494 

Tucson, AZ 85705 Dates of Evaluation: 10/04/90, 06/19/99 

Tel: (800) 394-9929 Evaluator: Control Strategies Engineering – out of business 

E-mail: info@praxair.com Tel: Contact Praxair Services, Inc. 

URL: www.praxairservices.com Date of Evaluation: 05/92 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

236

Issue Date: October 13, 2006 

Revision Date: July 13, 2007 

Praxair Services, Inc.

SeeperTraceTM

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above)

Certification Leak rate of 0.1 gph with PD = >99% and PFA = <1%. 

The USEPA has not set a minimum detectable leak rate for large diameter pipeline systems (airport 

hydrant systems) at the time of this evaluation.

Leak 

Threshold

A pipeline system should not be declared tight when a confirmable level of chemical tracer in the sample 

collected exceeds the background level. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other fluids which are compatible and soluble with an acceptable tracer chemical may be tested after 

consultation with the manufacturer. 

Pipeline 

Capacity

Not limited by capacity. 

Pipeline segments up to 1500 feet in length may be covered by an individual test sample collected continuously 

along this length. 

Waiting Time Ranges from 1 to 6 days after tracer is added to the product in the pipeline. 

All releases at a depth of 5 feet in non-engineered backfill were detected within 1 day after the start of the test. 

All releases at a depth of 10 feet were detectable 6 days after the start of the test. 

Leak simulations conducted at the depth of the pipeline can be used to validate test parameters such as soil 

permeability and waiting period. 

For very large pipeline systems, several days or weeks may be required to circulate tracer-labeled product 

through all parts of the pipeline. 

Waiting time begins after the tracer has reached the portions of the pipeline being tested. 

Leak 

Simulations

Leak simulations are the release of surrogate tracer into the soil or backfill at the depth of the pipeline to 

evaluate the migration of a tracer and the sensitivity of the test under on-site sub-surface conditions. Sub-surface 

conditions throughout the test area must be at least as favorable as those at the leak simulation location in order 

to use the results. 

Tracer Dosage Dosage of tracer is based on pipe capacity and frequency and volume of pipe use according to manufacturer's 

recommendations. 

Tracer-labeled product must be circulated through the pipeline before test period begins. 

Pressurized pipeline must be brought up to operating pressure or operated on a daily basis. 

System 

Features

Pipeline must be accurately located to ensure that sampling activity is within the zone of influence of the tracer. 

Sampling is conducted using a small metal sled that is pulled on the ground above the pipeline being tested. 

Comments The tester may determine that pre or post testing is needed to establish the background level of tracer in the 

soil. 

Due to the vapors being collected at the surface, testing can be affected by extreme windy conditions. High 

winds will generally cause a reduction in the amount of tracer from a release that is collected in the test sample. 

The presence of a layer of water saturated soil, that is also frozen, above the location where a leak may exist, 

may impede the transport of the tracer labeled product into the sampling zone. 

Groundwater surrounding the pipeline may limit effectiveness of test method (e.g. when applied to pipelines 

containing water-miscible products or products whose specific gravity is greater than 1). 

Leak simulations performed at the depth of the pipeline along sections of the pipeline below the water table or 

below saturated, frozen soil allow for validation of the method in these conditions. 

Praxair Services, Inc. Evaluator: Ken Wilcox Associates 

3755 N. Business Center Dr. Tel: (816) 443-2494 

Tucson, AZ 85705 Date of Evaluation: December 20, 2002 

Tel: (800) 394-9929 

E-mail: info@praxair.com 

URL: www.praxairservices.com
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

237

Issue Date: March 10, 2000 

Revision Date: December 4, 2002 

Praxair Services, Inc. 

(originally listed as Tracer Research Corp.)

Tracer ALD 2000 Automated Line Tightness Test

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

The USEPA has not set a minimum detectable leak rate for large diameter pipeline systems (airport 

hydrant systems) at the time of this evaluation.

Leak 

Threshold

A pipeline system should not be declared tight when tracer chemical or hydrocarbon greater than the 

background level is detected outside of the pipeline system. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other fluids which are compatible and soluble with an acceptable tracer chemical may be tested after 

consultation with the manufacturer. 

Pipeline 

Capacity

Not limited by capacity. 

Waiting Time Ranges from 1 week to 4 weeks (normally 2 weeks) after tracer is added to tank. 

For very large pipeline systems, several days or weeks may be required to circulate tracer-labeled product 

through all parts of the pipeline. 

Waiting time begins after tracer has reached all portions of the pipeline being tested. 

Tracer Dosage Tracer is added to tank manually or automatically using a metered injection pump at tank fill or tank discharge 

pipeline. 

Tracer-labeled product must be circulated through pipeline before test period begins. 

Pressurized pipeline must be brought up to operating pressure or operated on a daily basis. 

Manual dosage of tracer is based on tank size, product volume in tank, and frequency and volume of tank refills 

according to manufacturer's recommendations. 

Automated pipeline injection uses metered injection pumps to automatically inject tracer every time product 

flows through pipeline. 

Dosage is based on pipeline size and flow rate. 

Permeability Soil permeability must readily allow tracer movement through the tank excavation backfill (greater than 1 Darcy). 

Probe Radius of influence of each tracer sampling probe is maximum 10 feet. 

Pipeline must be accurately located to ensure that all pipeline surfaces are within the zone of influence of a 

sampling probe. 

Probes must be installed per manufacturer's guidelines. 

Comments The presence of a layer of water saturated soil, that is also frozen, above the location where a leak may exist, 

may inhibit the effectiveness of the method by impeding the transport of the tracer labeled product into the 

unsaturated zone. 

Groundwater surrounding pipeline may limit effectiveness of test method (e.g. when applied to pipelines 

containing water-miscible products or products whose specific gravity is greater than 1). 

Test method may not be effective in some tank excavation backfill (such as clay) because it may plug holes in 

pipeline and retard tracer movement through the soil. 

Third party evaluation of the ALD 2000 System tested the device's ability to collect a sample, transport sample 

through 2700 feet of 3/32 inch tubing, and analyze sample. 

Sample collection, analysis, data storage, and alarm activation is controlled by system's computer. 

Prior evaluations tested PD, PFA, leak threshold, dose, tracer movement through soil, and waiting times. 

Praxair Services, Inc. Evaluator: Ken Wilcox Associates 

3755 N. Business Center Dr. Tel: (816) 443-2494 

Tucson, AZ 85705 Dates of Evaluation: 10/04/90, 06/19/99 

Tel: (800) 394-9929 Evaluator: Control Strategies Engineering – out of business 

E-mail: info@praxair.com Tel: Contact Praxair Services, Inc. 

URL: www.praxairservices.com Date of Evaluation: 05/92 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

238

Issue Date: November 22, 1995 

Revision Date: October 2, 2003 

Praxair Services, Inc. 

(originally listed as Tracer Research Corp.)

Tracer Tight Line Test

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak rate of 0.005 gph with PD = 97% and PFA = 2.9%. 

Leak 

Threshold

A pipeline system should not be declared tight when tracer chemical greater than the background level is 

detected outside of the pipeline. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other fluids which are compatible and soluble with an acceptable tracer chemical may be tested after 

consultation with the manufacturer. 

Pipeline 

Capacity

Not limited by capacity. 

Waiting Time Ranges from 7 to 30 days after tracer is added to tank without support of on-site simulation. 

The waiting period may be adjusted below this range when supported by on-site leak simulations performed as 

described below. 

For very large pipeline systems, several days or weeks may be required to circulate tracer-labeled product 

through all parts of the pipeline. 

Waiting time begins after tracer has reached all portions of the pipeline being tested. 

Leak 

Simulations

The release of surrogate tracer into the soil or backfill to evaluate the migration of a tracer and the sensitivity of 

the test under on-site sub-surface conditions. Sub-surface conditions throughout the test area must be at least as 

favorable as those at the leak simulations location in order to use the results. This requirement may be satisfied 

by sampling the backfill material, and/or making flow/vacuum measurements from the sampling probes. 

Tracer Dosage Dosage of tracer is based on tank size, product volume in tank, and frequency and volume of tank refills 

according to manufacturer's recommendations. 

Tracer-labeled product must be circulated through the pipeline before test period begins. 

Pressurized pipeline must be brought up to operating pressure or operated on a daily basis. 

Permeability Soil permeability must readily allow tracer movement through the tank excavation backfill (greater than 1 Darcy). 

Probe Radius of influence of each tracer sampling probe is maximum 10 feet. 

Pipeline must be accurately located to ensure that all pipeline surfaces are within the zone of influence of a 

sampling probe. 

Probes must be installed per manufacturer's guidelines. 

Horizontal sampling probes may be installed in manufactured backfill during the installation of a new UST 

system. These probes must be installed per manufacturer’s guidelines. 

Comments The tester may determine that pre or post testing is needed to establish the background level of tracer in the 

soil. 

The presence of a layer of water saturated soil, that is also frozen, above the location where a leak may exist, 

may inhibit the effectiveness of the method by impeding the transport of the tracer labeled product into the 

unsaturated zone. 

Groundwater surrounding pipeline may limit effectiveness of test method (e.g. when applied to pipelines 

containing water-miscible products or products whose specific gravity is greater than 1). 

Praxair Services, Inc. Evaluator: Ken Wilcox Associates 

3755 N. Business Center Dr. Tel: (816) 443-2494 

Tucson, AZ 85705 Date of Evaluation: 10/04/90 

Tel: (800) 394-9929 Evaluator: Control Strategies Engineering – out of business 

E-mail: info@praxair.com Tel: Contact Praxair Services, Inc. 

URL: www.praxairservices.com Date of Evaluation: 05/92 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

239

Issue Date: November 22, 1995 

Revision Date: October 2, 2003

Praxair Services, Inc. 

(originally listed as Tracer Research Corp.)

Tracer Tight

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (TRACER)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak rate of 0.005 gph with PD = 97% and PFA = 2.9%. 

Leak 

Threshold

A tank system should not be declared tight when tracer chemical greater than the background level is detected 

outside of the tank system. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other fluids which are compatible and soluble with an acceptable tracer chemical may be tested after 

consultation with the manufacturer. 

Tank Capacity Not limited by capacity. 

Waiting Time Ranges from 7 to 30 days after tracer is added to tank without support of on-site leak simulation. 

The waiting period may be adjusted below this range when supported by on-site leak simulations performed as 

described below. 

Leak 

Simulations

The release of surrogate tracer into the soil or backfill to evaluate the migration of a tracer and the sensitivity of 

the test under on-site sub-surface conditions. Sub-surface conditions throughout the test area must be at least as 

favorable as those at the leak simulations location in order to use the results. This requirement may be satisfied 

by sampling the backfill material, and/or making flow/vacuum measurements from the sampling probes. 

Tracer Dosage Dosage of tracer is based on tank size, product volume in tank, and frequency and volume of tank refills 

according to manufacturer's recommendations. 

Permeability Soil permeability must readily allow tracer movement through the tank excavation backfill (greater than 1 Darcy). 

Probe Radius of influence of each tracer sampling probe is maximum 10 feet. 

All tank surfaces must be within the zone of influence of a sampling probe. 

Probes must be installed per manufacturer's guidelines. 

Horizontal sampling probes may be installed in manufactured backfill during the installation of a new UST 

system. These probes must be installed per manufacturer’s guidelines. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

For test method to detect a release of tracer chemical below groundwater, the hydrostatic pressure of product in 

the tank must exceed the hydrostatic pressure of groundwater during test. 

To accomplish this, product level must be maintained at least 6 inches above groundwater for a minimum 17 

hours during the first three days following addition of tracer to the tank. 

At the discretion of the regulatory agency, water ingress measuring devices may be used to supplement test 

method in high groundwater conditions. 

Comments The tester may determine that pre or post testing is needed to establish the background level of tracer in the 

soil. 

The presence of a layer of water saturated soil, that is also frozen, above the location where a leak may exist, 

may inhibit the effectiveness of the method by impeding the transport of the tracer labeled product into the 

unsaturated zone. 

Groundwater above bottom of tank may limit effectiveness of test method (e.g. when applied to tanks containing 

water-miscible products or products whose specific gravity is greater than 1). 

Praxair Services, Inc. Evaluator: Ken Wilcox Associates 

3755 N. Business Center Dr. Tel: (816) 443-2494 

Tucson, AZ 85705 Date of Evaluation: 10/04/90 

Tel: (800) 394-9929 Evaluator: Control Strategies Engineering – out of business 

E-mail: info@praxair.com Tel: Contact Praxair Services, Inc. 

URL: www.praxairservices.com Date of Evaluation: 05/92 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

240

Issue Date: November 22, 1995 

Revision Date: August 23, 1999 

Praxair Services, Inc. 

(originally listed as Tracer Research Corp.)

Tracer Tight

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector:

Output type: quantitative 

Sampling frequency: intermittent 

Operating principle: chromatographic (looks for chemical tracer) 

Test Results:

Hydrocarbon Detector 

(GC/FID) xylene benzene 2-methylbutane

unleaded 

gasoline

chemical 

tracers

Accuracy (%) <20 <20 <20 <20 N/R* 

Bias (%) 0 0 0 0 N/R 

Detection time (sec) <1 <1 <1 <1 N/R 

Fall time (sec) <1 <1 <1 <1 N/R 

Lower detection limit (ppm) 20 20 20 20 N/R 

Tracer Detector

Accuracy (%) N/R N/R N/R N/R <20 

Bias (%) N/R N/R N/R N/R 0 

Detection time (sec) N/R N/R N/R N/R <1 

Fall time (sec) N/R N/R N/R N/R <1 

Lower detection limit (ppm) N/R N/R N/R N/R 10-5

* See glossary. 

Manufacturer’s specifications:

Soil permeability at the site must exceed 1 Darcy. 

Comments:

System utilizes a chromatographic measurement of a vapor sample collected monthly from the site. 

Hydrocarbon vapors and the added chemical tracer can be measured independently. 

During evaluations, the tracer chemical was declared 159 out of 161 trials. 

System evaluation included detectors, analytical procedures, sample containers, sampling procedures, 

sampling system, monitoring well materials and installations, and tracer mobility. 

Praxair Services, Inc. Evaluator: Control Strategies Engineering – 

3755 N. Business Center Dr. out of business 

Tucson, AZ 85705 Tel: Contact Praxair Services, Inc. 

Tel: (800) 394-9929 Date of Evaluation: 05/05/92 

E-mail: info@praxair.com

URL: www.praxairservices.com
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

241

Issue Date: August 10, 2001 

Preferred Utilities Manufacturing Corporation

TG-EL-D3 Controller with HD-A1 Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative, discriminating 

Sampling frequency: continuous 

Operating principle: optical sensor, electrical conductivity 

Test Results:

HD-A1 unleaded gasoline diesel water

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (in) 0.179 0.162 0.190 

Specificity Results: 

Manufacturer claims the sensor responds to any liquid after the sensor’s threshold is exceeded. The 

sensor display on the controller indicates whether product is oil or water. No additional liquids tested.

Manufacturer’s Specifications:

Manufacturer states that the HD-A1 leak sensor used with the TG-EL-D3 controller and a tank level 

sensor (TG-EL-LF, TG-EL-VF, or TG-EL-WF) is a system that is generally applied to oil tanks for boilers 

and emergency generators. 

Comments: 

This system is NOT sold for retail gasoline station applications. 

Manufacturer recommends a periodic test for the system by the user. The test entails placing a magnet 

near the HD-A1 transmitter/sensor. When the magnetic “Test Switch” is activated, it simulates an oil 

leak. This completely tests the wiring to the sensor, the optical detector, the HD-A1 transmitter 

electronics, and the controller. 

Preferred Utilities Manufacturing Corporation Evaluator: Ken Wilcox Associates 

31-35 South Street Tel: (816) 443-2494 

Danbury, CT 06810 Date of Evaluation: 10/12/00 

Tel: (203) 743-6741 

E-Mail: DCosgrove@preferred-mfg.com 

URL: www.preferred-mfg.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

242

Issue Date: June 8, 2009 

Preferred Utilities Manufacturing Corporation

PWCN4-CDXRxxx Controller, RBS Non-Discriminating Sensors for Sumps and 

Containments; PS-LDS Non-Discriminating Sensor for Sumps and Containments; PLS NonDiscriminating Sensor for Reservoirs

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: reed switch/float 

Test Results:

Non-Discriminating Sensors diesel water

RBS Rupture Basin Switch 

(Sumps and Containments)

Detection time (sec) <1 <1 

Fall time (sec) <1 <1 

Lower detection limit (in) 1.411 1.120 

PS-LDS Pump Set Leak Detector Switch 

(Sumps and Containments)

Detection time (sec) <1 <1 

Fall time (sec) <1 <1 

Lower detection limit (in) 1.267 1.255 

PLS Liquid Level Switch 

(Reservoirs – High and Low level floats 

– up to six floats)

Detection time (sec) <1 <1 

Fall time (sec) <1 <1 

Lower detection limit (in) 2.443 2.220 

Comments: 

Control panel models: PWCN4-CDXRxxx for liquid level sensors; 

Can be used in normally open or closed positions, and wired to alarm or to shut down equipment. 

Minimum Specific Gravity: RBS=0.65, PS-LDS=0.75; PLS=0.5 

Preferred Utilities Manufacturing Corporation Evaluator: Ken Wilcox Associates 

31-35 South Street Tel: (816) 443-2494 

Danbury, CT 06810 Date of Evaluation: 1/20/09 

Tel: (203) 743-6741 

E-Mail: DCosgrove@preferred-mfg.co 

URL: www.preferred-mfg.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

243

Issue Date: April 18, 1997 

Revision Date: November 6, 1997 

ProTank, Inc.

LTH-5000 Line Tester

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 99.8% and PFA = 1.3%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests fiberglass and steel pipelines. 

Tests are conducted at 150% operating pressure. 

Mechanical line leak detector must be removed from pipeline for duration of test.

Pipeline 

Capacity

Maximum of 40 gallons.

Waiting Time None between delivery and testing. 

Minimum of 1 hour between dispensing and testing.

Test Period Minimum of 10 minutes. 

Repeat 10 minute cycles are necessary if data does not meet the manufacturer's 

criteria. 

Test data are acquired and recorded manually. 

Manual calculations are performed by operator on site.

Calibration Sensors must be calibrated in accordance with manufacturer's instructions before 

each test.

 

ProTank, Inc. Evaluator: Midwest Research Institute 

Manufacturer’s Previously Listed Contact Tel: (816) 753-7600 

Information is No Longer Valid. Date of Evaluation: 02/14/91 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

244

Issue Date: April 18, 1997 

Revision Date: November 6, 1997 

ProTank, Inc.

LTP-5000 Line Tester

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 99.0% and PFA = 0.1%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests fiberglass and steel pipelines. 

Tests are conducted at 150% operating pressure. 

Mechanical line leak detector must be removed from pipeline for duration of test.

Pipeline 

Capacity

Maximum of 41 gallons.

Waiting Time None between delivery and testing. 

Minimum of 1 hour between dispensing and testing.

Test Period Minimum of 1 hour. 

Pipe deflection, vapor pockets, and large temperature differences may produce 

inconsistent readings. 

Testing to continue until stable conditions are present. 

Test data are acquired and recorded manually. 

Manual calculations are performed by operator on site.

Calibration Sensors must be calibrated in accordance with manufacturer's instructions before 

each test.

ProTank, Inc. Evaluator: Midwest Research Institute 

Manufacturer’s Previously Listed Contact Tel: (816) 753-7600 

Information is No Longer Valid. Date of Evaluation: 08/30/91 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

245

Issue Date: April 18, 1997 

Revision Date: December 6, 2002 

ProTank, Inc.

UTA-5000 Ullage Tester 

(Vacuum or Pressure Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

A tank system should not be declared tight when the acoustic signal detected is different 

from the baseline. Baseline is the acoustic signal before tank is pressurized or evacuated. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Maximum ullage volume is 16,500 gallons. 

Waiting Time None between delivery and testing 

Test Period A few minutes to determine background noise and a leak. 

Depends on background noise at the site and on the size of the leak. 

After the desired pressure has been reached, the tank should be allowed to settle for 10 

minutes. 

There must be no dispensing or delivery during test. 

Test Pressure Vacuum of 1 psi must be maintained in ullage by a vacuum blower, or total pressure at 

bottom of tank of 4 psi must be maintained using nitrogen. 

Temperature Acoustic signal is independent of product temperature. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above product level, vacuum test should not be used. 

Pressure test may only be used if net pressure can be maintained at a minimum 1 psi 

throughout ullage during test. If this requires more than 5 psi total pressure at tank bottom, 

the ullage test must not be used. 

Comments Not evaluated using manifolded tank systems. 

Evaluated using diesel. Tests only ullage portion of the tank. 

Product-filled portion of tank must be tested with an underfill test method. 

Microphone was 25 feet away from the leak source during evaluation. 

If background noise is too high, test is inconclusive. 

Noise signals are tape recorded (not digitally recorded). 

Vacuum test method may not be effective in some tank excavation backfill (such as clay) 

because it may plug holes in tank. 

If soil is saturated with product, air or water ingress may not be declared by vacuum test. 

A well point in tank excavation backfill may help identify presence of this condition. 

ProTank, Inc. Evaluator: Ken Wilcox Associates 

Manufacturer’s Previously Listed Contact Tel: (816) 443-2494 

Information is No Longer Valid. Date of Evaluation: 01/15/93 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

246

Issue Date: April 18, 1997 

Revision Date: December 6, 2002 

ProTank, Inc.

UTF-5000 Ullage Tester 

(Pressure Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 95.24% and PFA = 0%.

Leak 

Threshold

A tank system should not be declared tight when the make-up gas flow rate into ullage 

equals or exceeds 0.275 cubic feet/hour.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Tank Capacity Maximum ullage volume is 7,500 gallons.

Waiting time Minimum of 2 hours between delivery and testing.

Test Period Minimum of 20 minutes, consisting of 2 consecutive 10-minute test periods. 

Test data are acquired and recorded manually. 

There must be no dispensing or delivery during test.

Test Pressure Pressure must be increased in ullage such that total pressure at bottom of tank does 

not exceed 5.0 psi. 

Pressure must be maintained for a minimum of 5 minutes per 1,000 gallons of ullage. 

At conclusion of this stabilization period, ullage pressure must be reduced by 0.5 psi 

for remainder of test.

Temperature Ullage must be monitored for rate of temperature change, which must not exceed 

manufacturer's tabulated values.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above product level, net pressure must exceed 1 psi in the ullage 

during test. 

If this requires more than 5 psi total pressure at tank bottom, the ullage test must not 

be used.

Comments Not evaluated using manifolded tank systems. 

Evaluated using diesel. Tests only ullage portion of tank. 

Product-filled portion of tank must be tested using a volumetric underfill test method.

ProTank, Inc. Evaluator: Midwest Research Institute 

Manufacturer’s Previously Listed Contact Tel: (816) 753-7600 

Information is No Longer Valid. Date of Evaluation: 12/04/92 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

247

Issue Date: April 18, 1997 

Revision Date: December 6, 2002 

ProTank, Inc.

UTFP-5000 Ullage Tester 

(Pressure Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 95.24% and PFA = 0%.

Leak 

Threshold

A tank system should not be declared tight when the pressure decay trend equals or 

exceeds ± 0.016 psi/hr.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Tank Capacity Maximum ullage volume is 10,260 gallons.

Waiting time Minimum of 2 hours between delivery and testing.

Test Period Minimum of 30 minutes (after data trend has been established). 

There must be no dispensing or delivery during test.

Test Pressure Total pressure of 4.0 psi must be applied at bottom of tank.

Temperature Ullage must be monitored during test, and a correction factor is applied to account for 

temperature changes. 

If ullage temperature changes exceed 5 degrees F, test must not be conducted.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above product level, net pressure must be maintained at a minimum 

of 1 psi in the ullage during test.

Comments Not evaluated using manifolded tank systems. 

Evaluated using diesel. Tests only ullage portion of tank. 

Product-filled portion of tank must be tested using a volumetric underfill test method.

ProTank, Inc. Evaluator: ADA Technologies, Inc. 

Manufacturer’s Previously Listed Contact Tel: (303) 792-5615 

Information is No Longer Valid. Date of Evaluation: 04/10/92 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

248

Issue Date: November 14, 1997 

Revision Date: December 6, 2002

ProTank, Inc.

Fast Test 

(Underfill Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (VACUUM)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

A tank system should not be declared tight when the acoustic signal detected is 

different from the baseline. Baseline is the acoustic signal before tank is evacuated.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer.

Tank Capacity Maximum product volume of 30,000 gallons. 

Tank product level must be between 7 and 86 inches.

Waiting Time None between delivery and testing

Test Period A few minutes to determine background noise and a leak. 

Depends on background noise at the site and on size of leak. 

There must be no dispensing or delivery during test.

Test Pressure Vacuum of 0.5 psi beyond the vacuum required to overcome the tank bottom pressure 

must be maintained in ullage by a vacuum blower. 

Net vacuum applied = 0.5 psi + [inches of product level x the specific gravity of 

product x 0.036].

Temperature Acoustic signal is independent of product temperature.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above the tank bottom, this test system may not be used.

Comments Not evaluated using manifolded tank systems. 

Evaluated using diesel. Tests only portion of tank containing product. 

Ullage portion of tank must be tested with an ullage test method. 

Microphone was 25 feet away from the leak source during evaluation. 

If background noise is too high, test is inconclusive. 

Noise signals are tape recorded (not digitally recorded). 

Vacuum test method may not be effective in some tank excavation backfill (such as 

clay) because it may plug holes in tank. 

If soil is saturated with product, air or water ingress may not be declared by vacuum 

test. A well point in tank excavation backfill may help identify presence of this 

condition.

ProTank, Inc. Evaluator: Ken Wilcox Associates 

Manufacturer’s Previously Listed Contact Tel: (816) 443-2494 

Information is No Longer Valid. Date of Evaluation: 06/25/96 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

249

Issue Date: April 18, 1997 

Revision Date: November 21, 2002 

ProTank, Inc.

VU-5000 Underfill Tester

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL)

Certification Leak rate of 0.1 gph with PD = 99.9% and PFA = 0.1%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 18,000 gallons. 

Minimum product level required is 24 inches.

Waiting Time Must be long enough between delivery and testing to ensure a temperature change of 

less than 0.09 degrees F per hour, typically a minimum of 2 hours. 

There must be no delivery during waiting time.

Test Period Minimum of 2 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from average over data window. 

There must be no dispensing or delivery during test.

Temperature Average for product is typically determined by 5 thermistors. 

A minimum of 1 thermistor is required.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a 

minimum net pressure of 1 psi at bottom of tank during test.

Calibration Thermistors must be checked annually and, if necessary, calibrated in accordance 

with manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

ProTank, Inc. Evaluator: Ken Wilcox Associates 

Manufacturer’s Previously Listed Contact Tel: (816) 443-2494 

Information is No Longer Valid. Date of Evaluation: 02/15/93 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

250

Issue Date: April 18, 1997 

Revision Date: November 21, 2002 

ProTank, Inc.

VUP-5000 Underfill Tester

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL)

Certification Leak rate of 0.1 gph with PD = 99.99% and PFA = 0.005%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 18,000 gallons. 

Tank must be between 11 and 95% full.

Waiting Time Minimum of 6 hours between delivery and testing. 

None between dispensing and testing. 

There must be no delivery during waiting time.

Test Period Minimum of 3 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from average of subsets of all collected data. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by temperature sensor probes. 

A minimum 12 inches of product must be present for the temperature probes to 

operate properly.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted during test to 

provide a minimum net pressure of 1 psi at bottom of tank during test.

Calibration Temperature probes and floats must be checked for proper operation prior to each 

test.

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

ProTank, Inc. Evaluator: ADA Technologies 

Manufacturer’s Previously Listed Contact Tel: (303) 792-5615 

Information is No Longer Valid. Date of Evaluation: 09/09/92 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

251

Issue Date: November 22, 1995 

Revision Date: October 29, 2010 

Purpora Engineering, Inc. 

(originally listed as Heath Consultants, Inc.)

Petro Tite Line Tester

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 99.99% and PFA = 0.34%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Vendor claims this equipment can detect leaks at .01 gph, and trains operators to 

declare leaks at .01 gph.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4.

Specification System tests fiberglass and steel pipelines. 

Tests are conducted at 150% operating pressure. 

Mechanical line leak detectors shall be removed or manually isolated from the pipeline 

for duration of the test, or check valve in pump must be manually closed if testing is to 

be conducted with mechanical line leak detector in place.

Pipeline 

Capacity

Maximum of 129 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Minimum of 1 hour pretest for 3 inch diameter fiberglass piping in accordance with 

Petro Tite test procedures. Pretest is not required for steel piping and not required for 

fiberglass piping with a diameter less than 3 inches. 

Minimum of 30 minute (two 15 minute readings) test when the detected leak does not 

exceed 0.005 gph, or minimum of 1 hour (four 15 minute readings) test when the 

detected leak is more than 0.005 gph for the first 30 minutes. 

Test data are acquired and recorded manually.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments The manufacturer does not support test results if the technician does not hold a 

current Petro-Tite certification when the test was performed. Re-certification is 

required by the manufacturer every 2 years. 

Purpora Engineering, LLC Evaluator: Ken Wilcox Associates 

P.O. Box 80265 Tel: (816) 443-2494 

Saukville, WI 53080 Dates of Evaluation: 03/11/91, 05/06/01 

Tel: (800) 352-2011 

E-mail: sap@purporaengineering.com 

URL: www.purporaengineering.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

252

Issue Date: March 10, 2000 

Revision Date: October 29, 2010 

Purpora Engineering, Inc. 

(originally listed as Heath Consultants, Inc.)

Petro Tite Line Tester 

(for Flexible Pipelines)

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 99.99% and PFA = 0.37%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Vendor claims this equipment can detect leaks at .01 gph, and trains operators to 

declare leaks at .01 gph.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4.

Specification System tests flexible pipelines. 

Pretests are conducted at 90 psi. 

Tests are conducted at 60 psi. 

Mechanical line leak detectors shall be removed or manually isolated from the pipeline 

for duration of the test, or check valve in pump must be manually closed if testing is to 

be conducted with mechanical line leak detector in place.

Pipeline 

Capacity

Maximum of 49.6 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Minimum of 1 hour pretest consisting of 2 segments (30 minute pressurization at 90 

psi followed by 30 minute pressurization at 60 psi). 

Minimum of 30 minute (two 15 minute readings) test when the detected leak does not 

exceed 0.005 gph, or minimum of 1 hour (four 15 minute readings) test when the 

detected leak is more than 0.005 gph for the first 30 minutes. Test data are acquired 

and recorded manually.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments The manufacturer does not support test results if the technician does not hold a 

current Petro-Tite certification when the test was performed. Re-certification is 

required by the manufacturer every 2 years. 

Purpora Engineering, LLC Evaluator: Ken Wilcox Associates 

P.O. Box 80265 Tel: (816) 443-2494 

Saukville, WI 53080 Dates of Evaluation: 3/11/91, 12/07/94, 05/06/01 

Tel: (800) 352-2011 

E-mail: sap@purporaengineering.com 

URL: www.purporaengineering.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

253

Issue Date: November 22, 1995 

Revision Date: April 27, 2005

Purpora Engineering, Inc. 

(originally listed as Heath Consultants, Inc.)

Petro Comp

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL)

Certification Leak rate of 0.1 gph with PD = 99% and PFA = 0.98%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, water. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 15,000 gallons. 

Tank must be minimum 100% full. 

An automatic product leveler must be used to maintain a constant product level during 

test.

Waiting Time None between delivery and testing. 

There must be no dispensing or delivery during waiting time.

Test Period Minimum of 2 hours after the completion of the high level circulation. 

Test data are acquired and recorded by system's computer after the completion of the 

high level circulation. 

Leak rate is calculated based on cumulative volume change during low level test 

(generally based on 1 hour average volume change). 

Product must be mixed continuously throughout test period. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a single temperature sensor.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a 

minimum net pressure of 4 psi at bottom of tank during test.

Calibration Temperature sensor is self calibrating. 

Level sensor must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Not evaluated using manifolded tank systems.

Purpora Engineering, LLC Evaluator: Ken Wilcox Associates 

P.O. Box 80265 Tel: (816) 443-2494 

Saukville, WI 53080 Date of Evaluation: 12/15/90 

Tel: (800) 352-2011 

E-mail: sap@purporaengineering.com 

URL: www.purporaengineering.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

254

Issue Date: November 22, 1995 

Revision Date: April 27, 2005

Purpora Engineering, Inc. 

(originally listed as Heath Consultants, Inc.)

Petro Tite II

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL)

Certification Leak rate of 0.1 gph with PD = 99% and PFA = 1%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4.

Tank Capacity Maximum of 15,000 gallons. 

Tank must be minimum 100% full. 

An automatic product leveler must be used to maintain a constant product level during 

test.

Waiting Time None between delivery and testing. 

There must be no dispensing or delivery during waiting time.

Test Period Minimum of 2 hours. 

Test data are acquired and recorded manually. 

Leak rate calculated based on cumulative volume change during low level test 

(generally based on 1 hour average volume change). 

Product must be mixed continuously throughout test period. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a single DTS-2000 digital sensor.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a 

minimum net pressure of 4 psi at bottom of tank during test.

Calibration Sensor calibration must be checked at each use and, if necessary, calibrated in 

accordance with manufacturer's instructions. 

The DTS-2000 digital sensor must be recertified a minimum of once every 3 years.

Comments Not evaluated using manifolded tank systems.

Purpora Engineering, LLC Evaluator: Ken Wilcox Associates 

P.O. Box 80265 Tel: (816) 443-2494 

Saukville, WI 53080 Date of Evaluation: 11/01/90 

Tel: (800) 352-2011 

E-mail: sap@purporaengineering.com 

URL: www.purporaengineering.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

255

Issue Date: November 22, 2004 

Robertshaw Industrial Products

Centeron High Level Alarm System (SM Series Switch Monitor with Centeron FSL Series 

Float 

Switches: Models *FSL AAA BB CC DD EE 0 and *FSL AAA BB CC DD EE C)

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: reed switch

Test Results:

Model *FSL AAA BB CC DD EE 0 unleaded gasoline diesel water

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Minimum Product Level (in) 0.883 0.895 0.827 

Model *FSL AAA BB CC DD EE C

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Minimum Product Level (in) 0.902 0.893 0.809 

Comments: 

*FSL AAA BB CC DD EE X indicates switch models where: 

“AAA” represents the switch assembly nominal length in inches; 

“BB” represents the nominal wire harness length in feet; 

“CC” represents the housing material; 

“DD” represents the float material; 

“EE” represents the mounting threads (if applicable); 

“X” where a “C” in this position indicates that the assembly is designed 

to be suspended by its cable, otherwise this character will be “0”. 

The FSL series switches alone were evaluated at the bottom of the test chamber. 

The evaluator states that the switch mechanism can be suspended from the top of a tank or other 

location where a high level alarm is needed. Depth of the liquid will therefore differ from levels 

reported. 

The evaluator reports that the FSL series switches meet the requirements for level sensors installed in 

tanks, sumps, interstitial spaces or other configurations where the presence of liquid needs to be 

indicated. 

The FSL series switches are connected to the switch monitor. An alarm signal is transmitted by radio 

frequency (RF) to the alarm console where the condition of the sensor is indicated. 

The evaluator reports that alarm information from the switch monitor can also be received by a 

Centeron TC series controller which can relay sensor condition by phone line to the Centeron Data 

Collector for remote data access over the Internet. Transmission of the RF signal to the controller was 

not evaluated. 

Robertshaw Industrial Products Evaluator: Ken Wilcox Associates 

1602 Mustang Drive Tel: (816) 443-2494 

Maryville, TN 37801 Date of Evaluation: 10/07/03 

Tel: (800) 237-7429 

E-mail: centeron@rsipd.com 

URL: www.centeron.net 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

256

Issue Date: November 22, 1995 

Revision Date: April 28, 2005 

Ronan Engineering Co.

Ronan X-76 Automatic Line Leak Detector with Version X-76 DM-4 Microprocessor and JT-H2 

Line Pressure Sensor

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol.

Leak 

Threshold

0.831 gph for leak rate of 3.0 gph. 

0.066 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline.

Pipeline 

Capacity

Maximum of 45 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 2 hours between dispensing and testing for leak rate of 0.1 gph.

Test Period Response time is 20 seconds for leak rate of 3.0 gph. 

Response time is 20 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a permanently installed microprocessor. 

Calculations are automatically performed by the microprocessor.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. Single test to determine if pipeline is leaking. Pump shutdown, 

message display, and alarm activation if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Ronan Engineering Co. Evaluator: Midwest Research Institute 

21200 Oxnard St. Tel: (816) 753-7600 

Woodland Hills, CA 91367 Date of Evaluation: 10/04/91 

Tel: (800) 327-6626 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

257

Issue Date: January 11, 2001 

Ronan Engineering Co.

X76CTM Series Monitoring System with: 

(Series 7100 Magnetostrictive Probe, X76MP Series Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1% for Precision Test with either probe. 

Leak rate of 0.2 gph with PD = 99.2% and PFA = 0.1% for Quick Test with Series 7100 Probe. 

Leak rate of 0.2 gph with PD = 99.6% and PFA = 0.1% for Quick Test with X76MP Series Probe. 

Leak rate of 0.1 gph with PD = 95.1% and PFA = 4.9% for 0.1gph Test with Series 7100 Probe. 

Leak rate of 0.1 gph with PD = 95.1% and PFA = 1.8% for 0.1gph Test with X76MP Series Probe. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph, Precision Test with Series 7100 Probe. 

0.115 gph for leak rate of 0.2 gph, Precision Test with X76MP Series Probe. 

0.115 gph for leak rate of 0.2 gph, Quick Test with Series 7100 Probe. 

0.129 gph for leak rate of 0.2 gph, Quick Test with X76MP Series Probe. 

0.05 gph for leak rate of 0.1 gph, 0.1gph Test with Series 7100 Probe. 

0.066 gph for leak rate of 0.1 gph, 0.1gph Test with X76MP Series Probe. 

A tank system should not be declared tight if the test result indicates a loss that equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 20,000 gallons. 

Tanks less than 95% full may be tested. 

Minimum product level required based on test mode as follows: 

For Quick Test with either probe, Precision Test with Series 7100 Probe, and 0.1gph Test with X76MP Series 

Probe, the minimum product level is computed as probe length divided by 6 plus 5 inches. 

For Precision Test with X76MP Series Probe and 0.1 gph Test with Series 7100 Probe, the minimum product level 

is 50% of tank capacity. 

Waiting Time Minimum of 1 hour between delivery and testing for Quick Test. 

Minimum of 6 hours between delivery and testing for Precision Test and 0.1 gph Test. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours for all tests. 

Test data are acquired and recorded by system's computer. Leak rate is calculated from data determined to be 

statistically valid. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a probe with 5 thermistors. 

At least one thermistor must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.661 inch. 

Minimum detectable water level change is 0.011 inch. 

System is default programmed to report a water depth only when it exceeds 3.5 inches. 

System can be programmed to report a water depth of 0.661 inch and above. 

Calibration System must be checked and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains product. 

Ronan Engineering Co. Evaluator: Ken Wilcox Associates 

21200 Oxnard St. Tel: (816) 443-2494 

Woodland Hills, CA 91367 Date of Evaluation: 08/15/99 

Tel: (800) 327-6626 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

258

Issue Date: January 11, 2001 

Ronan Engineering Co.

X76CTM Series Monitoring System (MTS UST Series Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD 

Certification Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1% for Precision Test. 

Leak rate of 0.2 gph with PD = 95.0% and PFA = 0.1% for Quick Test. 

Leak rate of 0.1 gph with PD = 95.2% and PFA = 2.5% for 0.1 gph Test. 

Leak 

Threshold

0.124 gph for leak rate of 0.2 gph, Precision Test. 

0.168 gph for leak rate of 0.2 gph, Quick Test. 

0.067 gph for leak rate of 0.1 gph, 0.1 gph Test. 

A tank system should not be declared tight if the test result indicates a loss that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 20,000 gallons. 

Tanks less than 95% full may be tested. 

Minimum product level required based on test mode as follows: 

For Quick Test, the minimum product level is computed as probe length multiplied by 0.12 plus 5 inches. 

For Precision Test and 0.1 gph Test, the minimum product level is 50% of tank capacity. 

Waiting Time Minimum of 1 hour between delivery and testing for Quick Test. 

Minimum of 6 hours between delivery and testing for Precision Test and 0.1 gph Test. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours for all tests. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be statistically valid. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a probe with 5 resistance temperature detectors (RTDs). 

The bottom RTD must be submerged in at least 5 inches of product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.874 inch. 

Minimum detectable water level change is 0.011 inch. 

System is default programmed to report a water depth only when it exceeds 3.5 inches. 

System can be programmed to report a water depth of 0.874 inch and above. 

Calibration System must be checked and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is 

a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. EPA leak detection regulations 

require testing of the portion of the tank system which routinely contains product. 

Ronan Engineering Co. Evaluator: Ken Wilcox Associates 

21200 Oxnard St. Tel: (816) 443-2494 

Woodland Hills, CA 91367 Date of Evaluation: 08/15/99 

Tel: (800) 327-6626 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

259

Issue Date: January 11, 2001 

Ronan Engineering Co.

X76CTM Series Monitoring System 

(Veeder-Root 8463/8473/8493 Series Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1% for Precision Test. 

Leak rate of 0.2 gph with PD = 97.0% and PFA = 0.1% for Quick Test. 

Leak rate of 0.1 gph with PD = 95.2% and PFA = 0.8% for 0.1 gph Test 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph, Precision Test. 

0.128 gph for leak rate of 0.2 gph, Quick Test. 

0.06 gph for leak rate of 0.1 gph, 0.1 gph Test. 

A tank system should not be declared tight if the test result indicates a loss that equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 20,000 gallons. 

Tanks less than 95% full may be tested. 

Minimum product level required based on tank diameter is as follows: 

48" dia/ min 18"; 

64" dia/ min 21"; 

72" dia/ min 24"; 

96" dia/ min 30"; 

126" dia/ min 39". 

Minimum product level required for other tank diameters; multiply probe length by 0.08 and add 5 inches. 

Waiting Time Minimum of 1 hour between delivery and testing for Quick Test. 

Minimum of 6 hours between delivery and testing for Precision Test and 0.1 gph Test. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours for all tests. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be statistically valid. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a probe with 5 thermistors. 

The bottom thermistor must be submerged in at least 5 inches of product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.878 inch. 

Minimum detectable water level change is 0.013 inch. 

System is default programmed to report a water depth only when it exceeds 3.5 inches. 

System can be programmed to report a water depth of 0.878 inch and above. 

Calibration System must be checked and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains product. 

Ronan Engineering Co. Evaluator: Ken Wilcox Associates 

21200 Oxnard St. Tel: (816) 443-2494 

Woodland Hills, CA 91367 Date of Evaluation: 08/15/99 

Tel: (800) 327-6626 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

260

Issue Date: November 22, 1995 

Revision Date: March 10, 2000 

Ronan Engineering Co.

X-76 ETM, X-76 ETM-4X (Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.96% and PFA = 0.044%. 

Leak rate of 0.1 gph with PD = 95.34% and PFA = 4.66%. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss that equals or exceeds 

this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation 

with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full for leak rates of 0.2 and 0.1 gph. 

Tank must have minimum product height of 12 inches or be 14% full, whichever is higher, when 

leak threshold is set at 0.049 gph (PD = 95% and PFA = 5%). 

Waiting Time Minimum of 2 hours between delivery and testing for leak rate of 0.2 gph. 

Minimum of 8 hours between delivery and testing for leak rate of 0.1 gph. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 4 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be statistically valid. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 1 resistance temperature detector (RTD). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.947 inch. 

Minimum detectable water level change is 0.0254 inch. 

Calibration RTD and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

X76ETM-4X console has different housing which allows it to be mounted outside. 

Ronan Engineering Co. Evaluator: Ken Wilcox Associates 

21200 Oxnard St. Tel: (816) 443-2494 

Woodland Hills, CA 91367 Dates of Evaluation: 02/07/91, 11/21/91 

Tel: (800) 327-6626 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

261

Issue Date: November 14, 1997 

Revision Date: September 11, 1998 

Ronan Engineering Co.

Ronan Controller Models X76S; X76VS; X76LVC; TRS76; X76ETM, LVCS; X76CTM-N4; 

X76ETM-4X; X76-4X, -3, -6, -9, -12; X76AST-4X with 

Ronan Sensor Models LS-3 N.C.; LS-3 N.O.; LS-30; LS-7; HVA; LS-3SS; LS-1

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch 

Test Results: 

LS-3 N.C. (normally closed) unleaded gasoline water

Detection time (sec) <1 <1 

Fall time (sec) <1 <1 

Lower detection limit (cm) 2.77 2.31 

LS-3 N.O. (normally open) 

Detection time (sec) <1 <1 

Fall time (sec) <1 <1 

Lower detection limit (cm) 2.31 1.70 

LS-30 (high level) 

Detection time (sec) <1 <1 

Fall time (sec) <1 <1 

Lower detection limit (cm) N/D* 15.24 

LS-30 (low level) 

Detection time (sec) <1 <1 

Fall time (sec) <1 <1 

Lower detection limit (cm) N/D 4.72 

LS-7 

Detection time (sec) <1 <1 

Fall time (sec) <1 <1 

Lower detection limit (cm) 1.09 0.81 

HVA 

Detection time (sec) <1 <1 

Fall time (sec) <1 <1 

Lower detection limit (cm) 0.84 0.71 

*See Glossary 

Comments: 

Sensors are reusable. 

LS-3SS is identical to LS-3 N.C. and LS-3 N.O. except that LS-3SS also tests for methanol and has a 

stainless steel float. 

The only difference between LS-1 and LS-3 is that LS-1 is smaller in diameter. 

Ronan Engineering Co. Evaluator: Ken Wilcox Associates 

21200 Oxnard St. Tel: (816) 443-2494 

Woodland Hills, CA 91367 Date of Evaluation: 02/06/92 

Tel: (800) 327-6626 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

262

Issue Date: March 5, 2002 

Revision Date: November 25, 2003

S Bravo Systems, Inc.

Model B-2000 Shallow Steel Dispenser Containment System 

Model B-8600 Aboveground/Marina Steel Dispenser Containment System

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative, non-discriminating 

Sampling frequency: continuous 

Operating principle: float switch 

Test Results:

unleaded gasoline diesel water

Detection time (hrs) 0.52 0.48 1.43 

Fall time (sec) * * * 

Lower detection limit (ml) 197.39 

(6.7 ounces) 

181.08 

(6.12 ounces) 

542.10 

(18.3 ounces) 

*The fall time was not determined. Evaluator notes that fall time is irrelevant because the only way to 

reset the system is to remove the liquid from the float sump and manually reset the shear valve. 

Specificity Results: 

Responds to any liquid in sufficient quantities to raise the float which trips the shear valve. No 

additional materials tested.

Manufacturer’s Specifications: 

The Model B-2000 and Model B-8600 systems use a float coupled to the shear valve mechanism of the 

dispenser. When any liquid (water or fuel) enters the sump in sufficient amounts to raise the float, the 

shear valve is tripped, preventing dispensing of fuel from that particular dispenser. The systems are 

designed with baffles that initially restrict the tripping to the dispenser in question. If sufficient liquid 

enters the section, it will overflow the baffle and trip the shear valves on the adjacent product inlet 

within the dispenser pan. 

S Bravo Systems, Inc. Evaluator: Ken Wilcox Associates 

2929 Vail Avenue Tel: (816) 443-2494 

Commerce, CA 90040 Dates of Evaluation: 01/27/02, 11/05/03 

Tel: (714) 888-4133 

E-mail: info@sbravo.com 

URL: www.sbravo.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

263

Issue Date: November 22, 1995 

Revision Date: November 6, 1997

Schuster Instruments

Tel-A-Leak 1

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL)

Certification Leak rate of 0.1 gph with PD = 99.86% and PFA = 0.14%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 15,000 gallons. 

Tank must be minimum 100% full.

Waiting Time Minimum of 6 hours between delivery and testing. 

Minimum of 1 hour between "topping off" and testing. 

There must be no dispensing or delivery during waiting time.

Test Period Minimum of 1 hour. 

Test data are acquired and recorded manually and by system's computer. 

Leak rate is calculated from average of the last 10 consecutive 6 minute readings. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a minimum of 10 temperature sensors.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide net 

pressure of 2-4 psi at bottom of tank during test.

Calibration Temperature sensors must be checked annually and calibrated annually in accordance 

with manufacturer's instructions.

Comments Not evaluated using manifolded tank systems.

Schuster Instruments Evaluator: W. A. Kibbe and Associates 

211 E. Grove St. Tel: (517) 797-2425 

Kawkawlin, MI 48631 Date of Evaluation: 11/26/90 

Tel: (517) 684-6638 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

264

Issue Date: May 27, 2004 

Revision Date: February 16, 2005

SGB (Sicherungsgeratebau GmbH) 

Overpressure Leak Detection System Model DLR-G

CONTINUOUS INTERSTITIAL LINE MONITORING METHOD (PRESSURE/VACUUM)

Certification: 

Certified per European leak detection standard EN 13160-2, Part 2, as a Class I leak detection system. 

Operating Principle: 

System uses pressurized nitrogen gas to continuously maintain an overpressure within the interstitial space of double-walled 

piping. 

System is designed to activate a visual and acoustic alarm before stored product can escape to the environment. 

System is capable of detecting breaches in both the inner and outer walls of double-walled piping. 

Alarm Condition: 

System alarms when a leak occurs which causes the pressure within the interstitial space to decrease to the “Minimum Interstitial 

Space Alarm Pressure” (see table below). 

Applicability:

Double-walled piping, underground or aboveground, having a design strength capable of safely sustaining the required operating 

pressure in the interstitial space. Pipes may convey flammable, combustible, or non-combustible liquids including gasoline, gasohol, 

diesel, heating oil #2, kerosene, aviation fuel, motor oil, and acidic or caustic solutions. Note: Conveyed product must not react 

with pressurized nitrogen. Interstitial space to be monitored must not exceed 150 ft3

. 

Manufacturer’s Specifications: 

The leak detector can be configured to monitor primary lines with operating pressures up to 120 psi, as indicated in the following 

table. The interstitial space shall be rated for the operating pressure (interstitial space refilling “off” pressure) of the leak detector, 

as indicated in the following table. Pressures shall be set as follows: 

Maximum Primary 

Line Pressure (psi)

Minimum Interstitial Space 

Alarm Pressure (psi) 

Maximum Interstitial Space 

Refilling “Off” Pressure (psi)

Unpressurized 15 30 

15 30 45 

30 45 60 

45 60 75 

60 75 90 

75 90 105 

90 105 120 

105 120 135 

120 135 150 

The DLR-G leak detector is not explosion protected. Do not install in a volatile, combustible or explosive atmosphere. Install the 

detector inside the building in a dry, frost-proof area. When using nitrogen gas, ensure that the room is ventilated according to 

applicable codes due to asphyxiation hazard. If installed outside in a protected area, place in a weatherproof protection box with a 

transparent lid. 

Calibration: 

Functional and operational safety tests must be performed annually in accordance with manufacturer’s instructions. 

Comments:

Interstitial space is tested continuously. 

System can operate in two modes: with or without a nitrogen bottle continuously connected. Nitrogen bottle must be connected 

unless the piping is “impermeable” (e.g. double-walled steel). 

Pressure is generated by inert gas bottle (nitrogen) and is measured and controlled by a pressure switch. 

This system may not be compatible with all secondarily contained tanks and/or piping. Always consult with the tank and/or piping 

manufacturer and the manufacturer’s applicable recommended installation practices before installing this system, or damage may 

be caused to the tank or piping by its use. 

SGB (Sicherungsgeratebau GmbH) Evaluator: TUV (Technischer 

Hofstrabe 10 Uberwachungs-Verein Nord e.V.) 

57076 Siegen, Germany Date of Evaluation: 01/27/04 

Tel: +49/ (0) 271 / 48964-0 

E-Mail: Sgb-mail@t-online.de 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

265

Issue Date: June 10, 2004 

Revision Date: February 16, 2005

SGB (Sicherungsgeratebau GmbH) 

Vacuum Leak Detection System Models VL 30p, VL 350p, and VL 400p 

CONTINUOUS INTERSTITIAL TANK SYSTEM MONITORING METHOD (PRESSURE/VACUUM)

Certification: 

Certified per European leak detection standard EN 13160-2, Part 2, as a Class I leak detection system. 

Operating Principle:

System uses an integral vacuum pump to continuously maintain a partial vacuum within the interstitial 

space of a double-walled tank or double-walled piping. 

System is designed to activate a visual and acoustic alarm before stored product can escape to the 

environment. 

System is capable of detecting breaches in both the inner and outer walls of double-walled tanks or 

double-walled piping. 

Alarm Condition: 

System alarms when liquid enters the interstitial space or an air leak occurs where the interstitial vacuum 

decreases (pressure increases) to the appropriate “Alarm ‘On’ Pressure” (see table below). 

Applicability:

Double-walled or lined single-walled horizontal (underground or aboveground) cylindrical tank with flat or 

dished head, storing, heating oil or diesel fuel, or double-walled piping conveying those liquids. 

Other liquids can also be stored or conveyed if the Flashpoint is above 55° C (no explosion protection 

required). 

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

266

DATA SHEET CONTINUED FROM PREVIOUS PAGE: SGB (Sicherungsgeratebau GmbH), 

Vacuum Leak Detection System Models VL 30p, VL 350p, and VL 400p

Manufacturer’s Specifications: 

The interstitial space shall be rated for the operating vacuum of the leak detector as indicated in the 

following table, regardless of temperature and groundwater level fluctuations. 

 

Model

Pump “Off” 

Pressure

(Operating vacuum 

is reached) 

Alarm “On” 

Pressure

(Leak exceeds pump 

capacity) 

Restrictions 

for Tanks

Restrictions 

for Piping

VL 30p 1.2 + 0.25 psi 

(2.44 + 0.5” Hg, or 

83 + 17 mbar) 

0.7 + 0.25 psi 

(1.43 + 0.5 ” Hg, or 

48 + 17 mbar) 

Suction line must be 

mounted at lowest 

point in the 

interstitial space 

regardless of tank 

diameter. 

This type is not applicable for piping. 

VL 350p 6.6 + 0.4 psi 

(13.4 + 0.8 ” Hg, or 

455 + 28 mbar) 

5.4 + 0.3 psi 

(11 + 0.6 ”Hg, or 

372 + 21 mbar) 

Tank diameter 

cannot exceed 10 

feet 6 inches unless 

the suction line is 

mounted at lowest 

point in the 

interstitial space. 

Height between the low point of the 

interstice and *node point (the doublewalled pipe may terminate higher than the 

node point without restrictions to the 

height if the pressure in the primary pipe 

does not exceed the given limits) cannot 

exceed 10 feet 6 inches. 

VL 400p 7.4 + 0.4 psi 

(15.1 + 0.8 ” Hg, or 

510 + 28 mbar) 

6.1 + 0.3 psi 

(12.4 + 0.6 ” Hg, or 

421 + 2 mbar) 

Tank diameter 

cannot exceed 12 

feet unless the 

suction line is 

mounted at lowest 

point in the 

interstitial space. 

Height “H” between the low point of the 

interstice and *node point (the doublewalled pipe may terminate higher than the 

node point without restrictions to the 

height “H” if the pressure in the primary 

pipe does not exceed the given limits) 

cannot exceed 12 feet. 

*Node Point – The point where the suction and measuring lines are connected together. 

Calibration: 

Functional and operational safety tests must be performed annually in accordance with manufacturer’s 

instructions. 

Comments:

Interstitial space is tested continuously. 

System is connected to the interstitial space by a suction line and a pressure measuring line. 

The VL ..p leak detector is not explosion protected. Do not install in a volatile, combustible or explosive 

atmosphere. 

This system may not be compatible with all secondarily contained tanks and/or piping. Always consult with the 

tank and/or piping manufacturer and the manufacturer’s applicable recommended installation practices before 

installing this system, or damage may be caused to the tank or piping by its use. 

SGB (Sicherungsgeratebau GmbH) Evaluator: TUV (Technischer 

Hofstrabe 10 Uberwachungs-Verein Nord e.V.) 

57076 Siegen, Germany Date of Evaluation: 02/11/04 

Tel: +49/ (0) 271 / 48964-0 

E-Mail: Sgb-mail@t-online.de 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

267

Issue Date: April 22, 2003 

Revision Date: February 16, 2005

SGB (Sicherungsgeratebau GmbH) 

Vacuum Leak Detection System Models VLX 30, VLX 350, and VLX 400 

CONTINUOUS INTERSTITIAL TANK SYSTEM MONITORING METHOD (PRESSURE/VACUUM)

Certification: 

Certified per European leak detection standard prEN 13160-2, Part 2, Version 2, as a Class I leak detection system. 

Operating Principle:

System uses an integral vacuum pump to continuously maintain a partial vacuum within the interstitial space of a 

double-walled tank. 

System is designed to activate a visual and acoustic alarm before stored product can escape to the environment. 

System is capable of detecting breaches in both the inner and outer walls of double-walled tanks. 

Alarm Condition: 

System alarms when liquid enters the interstitial space or an air leak occurs where the interstitial vacuum decreases 

(pressure increases) to the appropriate “Alarm ‘On’ Pressure” (See table below). 

Applicability:

Double-walled or lined single-walled horizontal (underground or aboveground) cylindrical tank with flat or dished 

head, storing gasoline, gasohol, diesel, heating oil #2, kerosene, aviation fuel, motor oil, water. 

Other liquids such as hydrocarbons, chemical solvents or alcohols that can be stored at atmospheric pressure having 

vapors heavier than air may be used after consultation with manufacturer. 

Manufacturer’s Specifications: 

The interstitial space shall be rated for the operating vacuum of the leak detector as indicated in the following table, 

regardless of temperature and groundwater level fluctuations. 

Model Pump “Off” Pressure

(Operating vacuum is 

reached) 

Alarm “On” Pressure

(Leak exceeds pump 

capacity) 

Restrictions

VLX 30 1.2 + 0.25 psi 0.7 + 0.25 psi Not for use where suction line is mounted 

on top of tank. 

VLX 350 6.6 + 0.4 psi 5.4 + 0.3 psi Tank diameter cannot exceed 10 feet 6 

inches unless the suction line is mounted at 

lowest point in the interstitial space. 

VLX 400 7.4 + 0.4 psi 6.1 + 0.3 psi Tank diameter cannot exceed 12 feet 

unless the suction line is mounted at lowest 

point in the interstitial space. 

Calibration: 

Functional and operational safety tests must be performed annually in accordance with manufacturer’s instructions. 

Comments:

Interstitial space is tested continuously. 

System is connected to the interstitial space by a suction line and a pressure measuring line. 

Vacuum is generated by an integral pump, and is measured and controlled by a pressure switch. 

This system may not be compatible with all secondarily contained tanks and/or piping. Always consult with the tank and/or 

piping manufacturer and the manufacturer’s applicable recommended installation practices before installing this system, or 

damage may be caused to the tank or piping by its use. 

SGB (Sicherungsgeratebau GmbH) Evaluator: TUV (Technischer 

Hofstrabe 10 Uberwachungs-Verein Nord e.V.) 

57076 Siegen, Germany Date of Evaluation: 05/24/02 

Tel: +49/ (0) 271 / 48964-0 

E-Mail: Sgb-mail@t-online.de 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

268

Issue Date: April 18, 1997 

Revision Date: July 21, 2009

Simmons Corp. 

(originally listed as Caldwell Systems Corp.)

Simmons/Caldwell Tank Manager (Ultrasonic Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1%. 

Leak rate of 0.1 gph with PD = 96.7% and PFA = 3.3%. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Maximum of 20,000 gallons. 

Minimum product level required to conduct a test is 18 inches. 

Waiting Time Minimum of 12 hours, 25 minutes between delivery and testing. 

Minimum of 15 minutes between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 3 hours, 15 minutes. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined from the measurement of the change in the speed of sound. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.921 inch. 

Minimum detectable change in water level is 0.0315 inch. 

Calibration Probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

Water sensor, temperature sensor and product level monitor are contained in a single ultrasonic 

probe. 

Simmons Corp. Evaluator: Ken Wilcox Associates 

106 E. Main Street Tel: (816) 443-2494 

Richardson, TX 75081-3327 Date of Evaluation: 04/22/96, 4/05/99 

Tel: (800) 848-8378 

E-mail: howard.dockery@simmons-corp.com 

URL: www.simmons-corp.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

269

Issue Date: March 31, 2006 

Revision Date: July 21, 2009 

Simmons Corp. 

(originally listed as Caldwell Systems Corp.)

Simmons/Caldwell Tank Manager Monitoring Systems with CITLDS 

(Ultrasonic Probe)

CONTINUOUS IN-TANK LEAK DETECTION METHOD 

(CONTINUOUS AUTOMATIC TANK GAUGING) 

Certification Leak rate of 0.2 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

Not applicable for qualitative methods. 

Method is qualitative and reports a result of “pass” or “fail”. 

Applicability Gasoline, diesel, aviation fuel, solvents, waste oil, fuel oil #4, water. 

Other liquids with known coefficients of expansion and density may be tested after consultation 

with the manufacturer. 

Tank Capacity Maximum of 18,000 gallons for single tanks 

Maximum of 54,000 gallons cumulative capacity for manifolded tank systems. 

Minimum product level required to conduct a test is 20 inches. 

Throughput Monthly maximum of 147,136 gallons. 

Waiting Time Minimum of 4 hours stabilization time is allowed between delivery and data collection. 

Test Period Data collection time ranges from 3 to 27 days. 

Data sampling frequency is every 1 minute. 

System collects data at naturally occurring product levels without interfering with normal tank 

operation, and discards data from unstable periods when system performs test. 

Temperature Average for product is determined by a minimum of 5 sensors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.736 inch. 

Minimum detectable change in water level is 0.031 inch. 

Calibration Probe must be checked annually and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Evaluated using both single and manifolded tank systems with probes in each tank. 

For valid monthly testing, a conclusive test report must be produced for each tank every month. 

System warns operator if there are no “ passing” tests completed during the month. 

For very active tanks, a tank shut down may become necessary in order for the system to collect 

enough quiet-time data for a test. 

Constant and variable leaks were mathematically induced into tight tank test records, which were 

collected by systems installed at various active tank sites. 

The database for evaluation of the system included sites with vapor recovery and blending 

dispensers. 

Tanks used in this evaluation contained gasoline and diesel. 

Simmons Corp. Evaluator: Ken Wilcox Associates 

106 E. Main Street Tel: (816) 443-2494 

Richardson, TX 75081-3327 Date of Evaluation: 04/08/05 

Tel: (800) 848-8378 

E-mail: howard.dockery@simmons-corp.com 

URL: www.simmons-corp.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

270

Issue Date: August 23, 1999 

Revision Date: July 21, 2009

Simmons Corp. 

(originally listed as Caldwell Systems Corp.)

Simmons/Caldwell Tank Manager Liquid Sensor, Version TMLIQ

INTERSTITIAL DETECTOR (LIQUID-PHASE) 

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: ultrasonic 

Test Results:

Horizontal Position unleaded gasoline diesel water

Response time (sec) <1 <1 <1 

Recovery time (sec) <1 <1 <1 

Lower detection limit (cm) 1.28 1.30 2.43 

Precision - standard deviation (cm) 0.05 0.06 0.25 

Vertical Position 

Response time (sec) <1 <1 <1 

Recovery time (sec) <1 <1 <1 

Lower detection limit (cm) 8.56 7.59 9.27 

Precision - standard deviation (cm) 0.22 0.11 0.44 

Specificity Results:

Evaluator claims sensor will detect fuels or other liquids. 

Comments: 

Sensor is designed to alarm only when liquid is present from one end of sensor to the other. 

Therefore, sensor orientation (vertical or horizontal) will affect lower detection limit. 

Sensors are reusable. 

Simmons Corp. Evaluator: Ken Wilcox Associates 

106 E. Main Street Tel: (816) 443-2494 

Richardson, TX 75081-3327 Date of Evaluation: 11/09/98 

Tel: (800) 848-8378 

E-mail: howard.dockery@simmons-corp.com 

URL: www.simmons-corp.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

271

Issue Date: November 22, 1995 

Revision Date: May 5, 2003 

Simmons Corp.

SIR 5.7

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.1 gph with PD = 99.0% and PFA = 1.0%. 

"If a method meets the requirement for detecting a leak rate of 0.1 gph, it will meet 

the requirement for 0.2 gph.", according to "Standard Test Procedures for Evaluating 

Leak Detection Methods: Statistical Inventory Reconciliation Methods", EPA/530/UST90/007, June 1990, Section 7.2.3, page 30. 

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Gains (water ingress) are analyzed and evaluated on and individual basis. 

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor. 

Tank Capacity Maximum of 18,000 gallons. 

Data 

Requirement

Minimum of 30 days of product level and throughput data. 

Comments Not evaluated using manifolded tank systems. 

Of 41 data sets submitted for evaluation, all were analyzed with conclusive results. 

Median monthly throughput of tanks evaluated was 7,000 gallons. 

Leak rates ranging from 0.05 to 0.2 gph were used in evaluation. 

Data sets evaluated were supplied by evaluator. 

Simmons Corp. Evaluator: S.S.G. Associates 

106 E. Main Street Tel: (662) 234-1179 

Richardson, TX 75081-3327 Date of Evaluation: 12/15/92 

Tel: (800) 848-8378 

E-mail: howard.dockery@simmons-corp.com 

URL: www.simmons-corp.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

272

Issue Date: April 18, 1997 

Revision Date: July 14, 2003 

Simmons Corp.

SIR 5.7 LM

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.2 gph with PD > 99.9% and PFA = 0.0%. 

Leak rate of 0.1 gph with PD > 99.0% and PFA < 1.0%.

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Gains (water ingress) are analyzed and evaluated on and individual basis.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 60,000 gallons for single tank. 

Maximum of 60,000 gallons cumulative capacity for manifolded tank systems with no 

more than 5 tanks in system.

Data 

Requirement

Minimum of 27 days of product level and throughput data.

Comments 61% of data sets evaluated were from manifolded tank systems. 

17% of data sets evaluated used data collected by Automatic tank gauges. 

Of 41 data sets submitted for evaluation, all were analyzed with conclusive results. 

Median monthly throughput of tanks evaluated was 55,791 gallons. 

Leak rates of 0.05, 0.1 and 0.2 gph were used in evaluation. 

Data sets evaluated were supplied by evaluator.

Simmons Corp. Evaluator: S.S.G. Associates 

106 E. Main Street Tel: (662) 234-1179 

Richardson, TX 75081-3327 Dates of Evaluation: 10/28/95, 02/15/00, 

Tel: (800) 848-8378 09/03/01 

E-mail: howard.dockery@simmons-corp.com 

URL: www.simmons-corp.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

273

Issue Date: January 11, 2001 

Simone Engineering, Inc.

Magnetrol Model 918 Ultrasonic Point Level Switch 

with ABB Automation Freelance 2000 Control System

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative, non-discriminating 

Sampling frequency: continuous 

Operating principle: electrical conductivity, ultrasonic 

Test Results:

trichloroethylene acetone water

Lower detection limit (in) 0.143 0.166 0.164 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Specificity Results: 

Evaluator claims sensors will respond to any liquid after threshold is exceeded. 

Comments: 

The Magnetrol Model 918 has not been evaluated for application with petroleum hydrocarbons. The 

sensor has been evaluated specifically for application in water, acetone, and trichloroethylene.

The ABB Automation Freelance 2000 was used to detect the 8 to 16 milliamp change that occurred in 

the Magnetrol sensor when it became submerged in product. Audible and visual alarms were activated 

when the sensor indicated that alarm conditions were present. 

FCX Performance Evaluator: Ken Wilcox Associates 

55 North Lively Blvd. Tel: (816) 443-2494 

Elk Grove Village, IL 60007 Date of Evaluation: 01/27/00 

Tel: (847) 806-1885 

E-Mail: chill@FCxPerformance.com 

URL: www.fcxperformance.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

274

Issue Date: November 22, 1995 

Revision Date: June 5, 2002 

SIR International, Inc.

Mitchell's SIR Program Versions 2.6, 2.7

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.2 gph with PD = 99% and PFA = 1% (Version 2.7). 

Leak rate of 0.1 gph with PD = 99% and PFA = 1% (Version 2.6).

Leak 

Threshold

0.10 gph for a leak rate of 0.2 gph (Version 2.7). 

0.05 gph for a leak rate of 0.1 gph (Version 2.6). 

These leak thresholds are for evaluation purposes only. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds the leak threshold calculated from the data set. This leak 

threshold may be different than the above leak thresholds.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 45,000 gallons for single tanks. 

Maximum of 45,000 gallons cumulative capacity for manifolded tank systems with no 

more than 4 tanks in system.

Data 

Requirement

Minimum of 23 days of product level and throughput data.

Comments 68% of data sets evaluated were from manifolded tank systems. 

Of 41 data sets submitted for evaluation, all were analyzed with conclusive results. 

Median monthly throughput of tanks evaluated was 22,370 gallons. 

Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation. 

Data sets used in this evaluation were supplied by evaluator. 

100% of inventory data used in this evaluation were gauge stick readings. 

Gains (water ingress) are analyzed and evaluated on an individual basis. 

The same data sets were used for both the 1995 and 1997 evaluations.

SIR International, Inc. Evaluator: Ken Wilcox Associates 

P.O. Box 1740 Tel: (816) 443-2494 

Canyon Lake, TX 78133 Dates of Evaluation: 01/27/92, 06/8/95, 07/27/97 

Tel: (830) 899-7565, (800) 793-1919, Fax: (830) 899-7566 

sir@gvtc.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

275

Issue Date: November 22, 1995 

Revision Date: January 11, 2001 

SIR Monitor 

(originally listed as Environmental Management Technologies)

SIR Monitor

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.1 gph with PD = 99% and PFA = 1%. 

"If a method meets the requirement for detecting a leak rate of 0.1 gph, it will meet 

the requirement for 0.2 gph.", according to "Standard Test Procedures for Evaluating 

Leak Detection Methods: Statistical Inventory Reconciliation Methods", EPA/530/UST90/007, June 1990, Section 7.2.3, page 30.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 18,000 gallons.

Data 

Requirement

Minimum of 90 days of product level and throughput data are required before making 

the first evaluation. 

Following the first evaluation, subsequent evaluations are made based on minimum of 

30 days of data.

Comments Not evaluated using data from manifolded tank systems. 

Of 41 data sets submitted for evaluation, 5 were inconclusive. 

Median monthly throughput of tanks evaluated was 14,600 gallons. 

Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation. 

Data sets evaluated were supplied by vendor.

SIR Monitor Evaluator: Nathan Adams, 

665 Evergreen Dr. Middle Tennessee State University 

Murfreesboro, TN 37128 Tel: (615) 898-2644 

Tel: (615) 896-4723 Date of Evaluation: 11/05/92 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

276

Issue Date: November 22, 1995 

Revision Date: May 5, 2003 

Sir Phoenix, Inc.

SIR Phoenix

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.1 gph with PD = 99.0% and PFA = 1%. 

"If a method meets the requirement for detecting a leak rate of 0.1 gph, it will meet 

the requirement for 0.2 gph.", according to "Standard Test Procedures for Evaluating 

Leak Detection Methods: Statistical Inventory Reconciliation Methods", EPA/530/UST90/007, June 1990, Section 7.2.3, page 30.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Gains (water ingress) are analyzed and evaluated on and individual basis.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 18,000 gallons.

Data 

Requirement

Minimum of 90 days of product level and throughput data are required before making 

the first evaluation. 

Following the first evaluation, subsequent evaluations are made based on minimum of 

30 days of data.

Comments Not evaluated using manifolded tank systems. 

Of 41 data sets submitted for evaluation, 5 were inconclusive. 

Median monthly throughput of tanks evaluated was 14,600 gallons. 

Leak rates of 0.05, 0.1, and 0.2 gph were evaluated. 

Data sets evaluated were supplied by vendor.

SIR Phoenix, Inc. Evaluator: Nathan Adams, 

15995 Indian Middle Tennessee State University 

La Conner, WA 98257 Tel: (615) 898-2644 

Tel: (360) 466-0206 Date of Evaluation: 11/05/92 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

277

Issue Date: May 5, 2003

Sir Phoenix, Inc.

SIR Phoenix LEOMA V01.50

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.2 gph with PD > 99.3% and PFA < 0.7% for single tanks. 

Leak rate of 0.2 gph with PD > 99.9% and PFA < 0.1% for manifolded tanks.

Leak 

Threshold

0.1 gph for both single and manifolded tank systems. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Gains (water ingress) are analyzed and evaluated on and individual basis.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 18,000 gallons for single tanks. 

Maximum of 45.000 gallons cumulative capacity for manifolded tank systems with no 

more than 4 tanks in system.

Data 

Requirement

Minimum of 28 days of product level and throughput data.

Comments 54% of data sets evaluated were from manifolded tank systems. 

Of 41 data sets submitted for evaluation, all were analyzed with conclusive results. 

Median monthly throughput of tanks evaluated was 18,897 gallons. 

Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation. 

Data sets used in this evaluation were supplied by evaluator. 

Inventory data used in this evaluation were obtained from manual tank stick readings 

and automatic tank gauge readings. 

Manufacturer also provides LeomaTM as an “in-house” product that licenses PC 

hardware and software. This "in-house" SIR product creates SIR reports based on SIR 

Phoenix LEOMA V01.50. Remote sites/stations enter data over ordinary phones into 

the LeomaTM PC database which uses a voice recognition system.

SIR Phoenix, Inc. Evaluator: Ken Wilcox Associates 

15995 Indian Tel: (816) 443-2494 

La Conner, WA 98257 Dates of Evaluation: 12/18/00 

Tel: (360) 466-0206 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

278

Issue Date: November 22, 1995 

Revision Date: November 6, 1997 

Soiltest, Inc.

Soiltest Ainlay Tank 'Tegrity' Tester, S-3

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL)

Certification Leak rate of 0.1 gph with PD = 99% and PFA = 1%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel.

Tank Capacity Maximum of 15,000 gallons. 

Tank must be minimum 100% full.

Waiting Time Minimum of 10 hours between delivery and testing. 

Minimum of 2 hours between "topping off" and testing. 

There must be no dispensing or delivery during waiting time.

Test Period Minimum of 1 hour, 30 minutes. 

Test data are acquired and recorded manually and by a strip chart recorder. 

Leak rate is calculated from last 1 hour, 30 minutes of test period data. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a minimum of 3 thermistors.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide net 

pressure of 2-4 psi at the bottom of tank during test.

Calibration Level sensors must be calibrated before each test in accordance with manufacturer's 

instructions. 

Thermistors must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Not evaluated using manifolded tank systems.

Soiltest, Inc. Evaluator: Law Engineering Industrial Services 

Manufacturer’s Previously Listed Contact Tel: (800) 672-6601 

Information is No Longer Valid. Date of Evaluation: 11/28/90 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

279

Issue Date: August 23, 1999 

Revision Date: January 24, 2008 

Steel Tank Institute

Permatank Interstitial Vacuum Monitor Liquid Leaks

INTERSTITIAL TANK TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 100% and PFA < 5%.

Leak 

Threshold

A tank system should not be declared tight when the vacuum decreases (pressure 

increases) 5 inches or more of mercury over the test period specified for each tank 

size. 

Vacuum prior to test must be minimum of 14 inches of mercury.

Applicability Gasoline, diesel, water.

Tank Capacity Maximum of 20,000 gallons. No minimum product level during test.

Waiting Time None between delivery and testing.

Test Period Test periods required for selected tank sizes to detect a leak rate of 0.1 gph

Selected Tank 

Sizes

gasoline diesel water

500 gal 0.4 hr 5.0 hr 4.8 hr 

5,000 gal 1.3 hr 16.2 hr 15.7 hr 

8,000 gal 2.1 hr 24.9 hr 24.2 hr 

20,000 gal 3.7 hr 44.8 hr 43.6 hr 

Comments System tests the interstitial space between inner steel wall and outer fiberglass wall 

of Steel Tank Institute's Permatank. 

System detects breaches in either inner or outer tank walls. 

System can perform tank tightness testing of Steel Tank Institute's double wall 

Permatank after product has been added to the primary tank. 

System was not evaluated for ability to detect layer of hydrocarbons on water. 

Evaluation did not cover any liquid sensors.

Steel Tank Institute Evaluator: Ken Wilcox Associates 

570 Oakwood Rd. Tel: (816) 443-2494 

Lake Zurich, IL 60047 Date of Evaluation: 04/24/94 

Tel: (847) 438-8265 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

280

Issue Date: March 10, 2000 

Steel Tank Institute

Permatank Precision Interstitial Vacuum Monitor

INTERSTITIAL TANK TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 100% and PFA =0%.

Leak 

Threshold

0.01 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4.

Tank Capacity Maximum of 50,000 gallons.

Waiting Time None.

Test Period 12 hours for tanks less than 10,000 gallons. 

24 hours for tanks 10,000 gallons to 50,000 gallons.

Comments System performs post installation tank tightness test of Steel Tank Institute's doublewall Permatank prior to adding product to tank. 

System conducts vacuum test on interstitial space between inner steel wall and outer 

fiberglass wall of Steel Tank Institute's Permatank and detects breaches in either 

inner or outer wall. 

For use only on Permatank underground storage tanks manufactured by Steel Tank 

Institute. 

Minimum initial vacuum on interstitial space is 13 inches mercury. 

Tank declared tight when vacuum decrease is less than 5 inches mercury over 

specified test period. Vacuum readings must be recorded on Steel Tank Institute's 

installation checklist.

Steel Tank Institute Evaluator: Ken Wilcox Associates 

570 Oakwood Rd. Tel: (816) 443-2494 

Lake Zurich, IL 60047 Date of Evaluation: 03/25/93 

Tel: (847) 438-8265 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

281

Issue Date: November 22, 1995 

Revision Date: August 18, 2005

Summit Holdings, Inc. – Oklahoma Environmental, Inc. 

(originally listed as, Arizona Instrument Corp., then NESCO, and then Phoenix Technologies 

Division of Phoenix Group)

Soil Sentry Liquid 330 (17-330-A/17-330-B), TLM-830, ENCOMPASS APAM with 

Probes 17-141A, 17-142A, 17-143A, 17-144A

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: refraction 

Test Results:

unleaded gasoline synthetic gasoline diesel water

Detection time (sec) 3 3 N/D* N/D 

Fall time manual reset manual reset N/D N/D 

Lower detection limits (cm) 

 17-141A 0.25 0.28 0.15 0.1 

 17-142A 0.25 0.30 0.18 0.18 

 17-143A 0.03 0.15 0.03 0.13 

 17-144A 0.28 0.30 0.30 0.15 

* See glossary. 

Specificity Results (in addition to above):

Activated: n-hexane, jet-A fuel, toluene (Only 17-143A was tested with toluene), xylene(s). 

 

Comments: 

Detectors are listed as interstitial due to intended use. 

Sensors are reusable. 

Although ENCOMPASS APAM (Accessory Probe Access Module) was not included in evaluations, 

according to manufacturer, probes perform in the same manner when connected to any one of these 3 

systems. 

Summit Holdings, Inc., - Oklahoma Environmental, Inc. Evaluator: Ken Wilcox Associates 

717 South Hoover Street Tel: (816) 443-2494 

Enid, Oklahoma 73703 Dates of Evaluation: 12/29/92, 01/08/93 

Tel: 888-584-3386 ext. 112 

E-mail: deannaa@oei-usa.net 

URL: www.oei-usa.net 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

282

Issue Date: November 22, 1995 

Revision Date: August 18, 2005

Summit Holdings, Inc. – Oklahoma Environmental, Inc. 

(originally listed as, Arizona Instrument Corp., then NESCO, and then Phoenix Technologies 

Division of Phoenix Group)

Soil Sentry Twelve-X

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: quantitative 

Sampling frequency: continuous 

Operating principle: metal oxide semiconductor 

Test Results:

unleaded gasoline synthetic gasoline JP-4 jet fuel

Accuracy* (%) 170 120 120 

Bias* (%) 60 8.0 1.8 

Precision* (%) 6.3 7.7 18 

Detection time (min:sec) 12:20 12:27 12:33 

Fall time* (min:sec) 11:53 11:53 11:55 

Lower detection limit (ppm) 150 140 60 

 

* For tests conducted with 1000 ppm of test gas. 

Specificity Results: 

percentages

unleaded gasoline 170 

synthetic gasoline 110 

n-hexane 110 

JP-4 jet fuel 90 

toluene 43 

xylene( s) 22 

Manufacturer’s specifications:

Calibration is recommended on an annual basis, or whenever the sensor or the main printed circuit 

board is replaced. 

Summit Holdings, Inc., - Oklahoma Environmental, Inc. Evaluator: Radian Corp. 

717 South Hoover Street Tel: (512) 454-4797 

Enid, Oklahoma 73703 Dates of Evaluation: 12/28/90 

Tel: 888-584-3386 ext. 112 

E-mail: deannaa@oei-usa.net 

URL: www.oei-usa.net 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

283

Issue Date: November 22, 1995 

Revision Date: November 6, 1997 

Syscorp, Inc.

Store Vision Version E.2

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUALITATIVE)

Certification Leak rate of 0.2 gph with PD = 95.7% and PFA = 0%.

Leak 

Threshold

0.0834 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 12,000 gallons.

Data 

Requirement

Minimum of 29 days of product level and throughput data.

Comments Not evaluated using manifolded tank systems. 

Of 120 data sets submitted for evaluation, 32 were inconclusive. 

Median monthly throughput of tanks evaluated was 8,097 gallons. 

Leak rate of 0.2 gph was used in evaluation. Data sets evaluated were supplied by 

evaluator.

Syscorp, Inc. Evaluator: Midwest Research Institute 

531 Highland Park Circle Tel: (816) 753-7600 

Birmingham, AL 35242 Date of Evaluation: 09/30/93 

Tel: (205) 981-7413 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

284

Issue Date: November 22, 1995 

Revision Date: November 6, 1997 

Tank Automation, Inc.

Automated Precision Tank Testing System (APTT System) R-2

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL)

Certification Leak rate of 0.1 gph with PD = 99% and PFA = 1%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 15,000 gallons. 

Tank must be minimum 100% full.

Waiting Time Minimum of 10 hours, 30 minutes between delivery and testing. 

Minimum of 2 hours, 30 minutes between "topping off" and testing. 

There must be no dispensing or delivery during waiting time.

Test Period Minimum of 1 hour. 

Test data are acquired and recorded manually for level measurement and by system's 

computer for temperature measurement. 

Leak rate is calculated from last 1 hour of test period data. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a minimum of 10 thermistors.

Groundwater Groundwater presence must be determined to a depth of 5 feet below grade in tank 

excavation backfill. 

Product level must be a minimum of 5 feet 6 inches above grade to ensure a minimum 

net pressure of 1 psi at bottom of tank during test.

Calibration Thermistors and level sensors must be checked annually and, if necessary, calibrated 

in accordance with manufacturer's instructions.

Comments Not evaluated using manifolded tank systems.

Tank Automation, Inc. Evaluator: Wildwood Engineering 

Manufacturer’s Previously Listed Contact Tel: Unavailable 

Information is No Longer Valid. Date of Evaluation: 11/14/90 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

285

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

Tanknology

Proline Test Series III, Version 1.0

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 99.0% and PFA = 0.1%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests fiberglass and steel pipelines. 

Tests are conducted at 150% operating pressure. 

Mechanical line leak detector must be removed from pipeline for duration of test.

Pipeline 

Capacity

Maximum of 41 gallons.

Waiting Time None between delivery and testing. 

Minimum of 1 hour between dispensing and testing.

Test Period Minimum of 1 hour. 

Pipe deflection, vapor pockets, and large temperature differences may produce 

inconsistent readings, testing to continue until stable conditions are present. 

Test data are acquired and recorded manually. 

Manual calculations are performed by the operator on site.

Calibration Sensors must be calibrated before each test in accordance with manufacturer's 

instructions.

Tanknology Evaluator: Midwest Research Institute 

11000 North MoPac Expressway, Suite 500 Tel: (816) 753-7600 

Austin, TX 78759 Date of Evaluation: 08/30/91 

Tel: (800) 800-4633 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

286

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

Tanknology

PTK-88

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 99.8% and PFA = 1.3%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests fiberglass and steel pipelines. 

Tests are conducted at 150% operating pressure. 

Mechanical line leak detector must be removed from pipeline for duration of test.

Pipeline 

Capacity

Maximum of 40 gallons.

Waiting Time None between delivery and testing. 

Minimum of 1 hour between dispensing and testing.

Test Period Minimum of 10 minutes. 

Repeat 10 minute cycles are necessary if data does not meet the manufacturer's 

criteria. 

Test data are acquired and recorded manually. 

Manual calculations are performed by the operator on site.

Calibration Sensors must be calibrated before each test in accordance with manufacturer's 

instructions.

Tanknology Evaluator: Midwest Research Institute 

11000 North MoPac Expressway, Suite 500 Tel: (816) 753-7600 

Austin, TX 78759 Date of Evaluation: 02/14/91 

Tel: (800) 800-4633 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

287

Issue Date: November 22, 1995 

Revision Date: May 3, 2002 

Tanknology

TLD-1

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 99.5% and PFA = 0.5%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel.

Specification System tests fiberglass and steel pipelines. 

Tests are conducted at 150% operating pressure. 

Mechanical line leak detector must be removed or manually isolated from pipeline for 

duration of test, or check valve in pump must be manually closed if testing is to be 

conducted with mechanical line leak detector in place.

Pipeline 

Capacity

Maximum of 172 gallons.

Waiting Time Testing may begin immediately after system is installed in the line.

Test Period Response time is 30 minutes to 6 hours. 

Test may not be ended until pass/fail criteria set by manufacturer has been met. 

Pipe deflection, vapor pockets, and large temperature differences may produce 

inconsistent readings. 

Testing must continue until stable conditions are present. 

Test data are acquired and recorded manually.

Tanknology Evaluator: Ken Wilcox Associates 

11000 North MoPac Expressway, Suite 500 Tel: (816) 443-2494 

Austin, TX 78759 Dates of Evaluation: 12/29/91, 03/04/02 

Tel: (800) 800-4633 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

288

Issue Date: May 2, 2000 

Revision Date: May 15, 2008 

Tanknology

TLD-1 (for Flexible Pipelines)

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 99.7% and PFA = 0.3%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel.

Specification System tests flexible pipelines. 

Tests are conducted at 150% operating pressure. 

Mechanical line leak detector must be removed or isolated from pipeline for duration 

of test. 

Pipeline 

Capacity

Maximum of 119.4 gallons.

Waiting Time Testing may begin immediately after system is installed in the line.

Test Period Minimum of 30 minutes. 

Consistent readings for at least three readings must be obtained for a valid test. 

The actual test time will depend on line size and temperature conditions at the site. 

The data from this evaluation suggests that the actual minimum test time is 50 

minutes for a line of this capacity. 

Test may not be ended until pass/fail criteria set by manufacturer has been met. 

Pipe deflection, vapor pockets, and large temperature differences may produce 

inconsistent readings. 

Testing must continue until stable conditions are present. 

Test data are acquired and recorded manually.

Comments Enviroflex pipeline wih a bulk modulus* of 8,359 was used during evaluation. 

*See glossary.

Tanknology Evaluator: Ken Wilcox Associates 

11000 North MoPac Expressway, Suite 500 Tel: (816) 443-2494 

Austin, TX 78759 Dates of Evaluation: 04/30/94, 07/22/04 

Tel: (800) 800-4633 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

289

Issue Date: November 22, 1995 

Revision Date: December 6, 2002 

Tanknology

UST Ullage Test, Version U2 (Pressure Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 95.24% and PFA = 0%.

Leak 

Threshold

A tank system should not be declared tight when the pressure decay trend equals or 

exceeds ± 0.016 psi/hr.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Tank Capacity Maximum ullage volume is 10,260 gallons.

Waiting time Minimum of 2 hours between delivery and testing.

Test Period Minimum of 30 minutes (after data trend has been established). 

There must be no dispensing or delivery during test.

Test Pressure Total pressure of 4.0 psi must be applied at bottom of tank.

Temperature Ullage must be monitored during test, and a correction factor is applied to account for 

temperature changes. 

If ullage temperature changes exceed 5 degrees F, test must not be conducted.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above product level, net pressure must be maintained at a minimum 

of 1 psi in the ullage during test.

Comments Not evaluated using manifolded tank systems. 

Evaluated using diesel. 

Tests only ullage portion of tank. 

Product-filled portion of tank must be tested using a volumetric underfill test method.

Tanknology Evaluator: ADA Technologies, Inc. 

11000 North MoPac Expressway, Suite 500 Tel: (303) 792-5615 

Austin, TX 78759 Date of Evaluation: 04/10/92 

Tel: (800) 800-4633 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

290

Issue Date: November 22, 1995 

Revision Date: December 6, 2002 

Tanknology

UTS-4T Ullage Test (Pressure Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 95.24% and PFA = 0%.

Leak 

Threshold

A tank system should not be declared tight when the make-up gas flow rate into 

ullage equals or exceeds 0.275 cubic feet/hour.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Tank Capacity Maximum ullage volume is 7,500 gallons.

Waiting time Minimum of 2 hours between delivery and testing.

Test Period Minimum of 20 minutes, consisting of 2 consecutive 10-minute test periods. 

Test data are acquired and recorded manually. 

There must be no dispensing or delivery during test.

Test Pressure Pressure must be increased in ullage such that total pressure at bottom of tank does 

not exceed 5.0 psi. 

Pressure must be maintained for a minimum of 5 minutes per 1,000 gallons of ullage. 

At conclusion of this stabilization period, ullage pressure must be reduced by 0.5 psi 

for remainder of test.

Temperature Ullage must be monitored for rate of temperature change, which must not exceed 

manufacturer's tabulated values.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above product level, net pressure must exceed 1 psi in the ullage 

during test. 

If this requires more than 5 psi total pressure at tank bottom, the ullage test must not 

be used.

Comments Not evaluated using manifolded tank systems. Evaluated using diesel. Tests only 

ullage portion of tank. Product-filled portion of tank must be tested using a volumetric 

underfill test method.

Tanknology Evaluator: Midwest Research Institute 

11000 North MoPac Expressway, Suite 500 Tel: (816) 753-7600 

Austin, TX 78759 Date of Evaluation: 12/04/92 

Tel: (800) 800-4633 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

291

Issue Date: November 22, 1995 

Revision Date: December 6, 2002 

Tanknology

U3 Ullage Test (Vacuum or Pressure Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

A tank system should not be declared tight when the acoustic signal detected is different 

from the baseline. 

Baseline is the acoustic signal before tank is pressurized or evacuated. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Maximum ullage volume is 16,500 gallons. 

Waiting Time None between delivery and testing 

Test Period A few minutes to determine background noise and a leak. 

Depends on background noise at the site and on the size of the leak. 

After the desired pressure has been reached, the tank should be allowed to settle for 10 

minutes. 

There must be no dispensing or delivery during test. 

Test Pressure Vacuum of 1 psi must be maintained in ullage by a vacuum blower, or total pressure at 

bottom of tank of 4 psi must be maintained using nitrogen. 

Temperature Acoustic signal is independent of product temperature. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above product level, vacuum test should not be used. 

Pressure test may only be used if net pressure can be maintained at a minimum 1 psi 

throughout ullage during test. 

If this requires more than 5 psi total pressure at tank bottom, the ullage test must not be 

used. 

Comments Not evaluated using manifolded tank systems. 

Evaluated using diesel. 

Tests only ullage portion of the tank. 

Product-filled portion of tank must be tested with an underfill test method. Microphone was 

25 feet away from the leak source during evaluation. 

If background noise is too high, test is inconclusive. 

Noise signals are tape recorded (not digitally recorded). 

Vacuum test method may not be effective in some tank excavation backfill (such as clay) 

because it may plug holes in tank. 

If soil is saturated with product, air or water ingress may not be declared by vacuum test. 

A well point in tank excavation backfill may help identify presence of this condition. 

Tanknology Evaluator: Ken Wilcox Associates 

11000 North MoPac Expressway, Suite 500 Tel: (816) 443-2494 

Austin, TX 78759 Date of Evaluation: 01/15/93 

Tel: (800) 800-4633 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

292

Issue Date: November 14, 1997 

Revision Date: December 6, 2002

Tanknology

Quick Test (Underfill Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (VACUUM)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

A tank system should not be declared tight when the acoustic signal detected is 

different from the baseline. Baseline is the acoustic signal before tank is evacuated.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer.

Tank Capacity Maximum product volume of 30,000 gallons. 

Tank product level must be between 7 and 86 inches.

Waiting Time None between delivery and testing

Test Period A few minutes to determine background noise and a leak. 

Depends on background noise at the site and on size of leak. 

There must be no dispensing or delivery during test.

Test Pressure Vacuum of 0.5 psi beyond the vacuum required to overcome the tank bottom pressure 

must be maintained in ullage by a vacuum blower. 

Net vacuum applied = 0.5 psi + [inches of product level x the specific gravity of 

product x 0.036].

Temperature Acoustic signal is independent of product temperature.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above the tank bottom, this system may not be used.

Comments Not evaluated using manifolded tank systems. 

Evaluated using diesel. 

Tests only portion of tank containing product. 

Ullage portion of tank must be tested with an ullage test method. 

Microphone was 25 feet away from the leak source during evaluation. 

If background noise is too high, test is inconclusive. 

Noise signals are tape recorded (not digitally recorded). 

Vacuum test method may not be effective in some tank excavation backfill (such as 

clay) because it may plug holes in tank. 

If soil is saturated with product, air or water ingress may not be declared by vacuum 

test. 

A well point in tank excavation backfill may help identify presence of this condition.

Tanknology Evaluator : Ken Wilcox Associates 

11000 North MoPac Expressway, Suite 500 Tel: (816) 443-2494 

Austin, TX 78759 Date of Evaluation: 06/25/96 

Tel: (800) 800-4633 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

293

Issue Date: November 22, 1995 

Revision Date: September 22, 2009 

Tanknology

VacuTect

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (VACUUM)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

A tank system should not be declared tight when: 

sonic emission of air ingress is detected in ullage area and/or; sonic emission of bubbles 

formed by air ingress is detected in product-filled portion of the tank and/or; water ingress is 

detected by the water sensor. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer. Water miscible 

products limit the effectiveness of water ingress detection. 

Tank Capacity Maximum of 75,000 gallons. 

Test may be performed at any product level, including empty, if total ullage volume does not 

exceed 20,000 gallons. 

Maximum of 30,000 gallons per tank and 60,000 gallons cumulative capacity for manifolded 

tank systems with microphone (hydrophone) and water sensor in each tank. 

Waiting Time None between delivery and testing. 

Test Period Minimum not specified to declare a tank "non-tight". 

There must be no dispensing or delivery during test. 

When water level in tank excavation backfill is below bottom of tank:

Minimum of 1 hour to declare tank tight. 

When water level in tank excavation backfill is above bottom of tank:

Minimum to declare a tank tight may need to be extended because a water sensor must be 

used. 

When water level in tank excavation backfill is not determined:

Minimum to declare a tank tight may need to be extended because a water sensor must be 

used. 

To determine test period, water level in tank excavation backfill must be assumed to be just 

above bottom of tank. 

When using a water sensor, the test period is determined based on tank size, water level 

inside tank prior to test, tank tilt, type of water sensor, water sensor location in the tank, and 

water level in tank excavation backfill relative to bottom of tank. Tank tilt is determined by 

an inclinometer, or by measuring tank bottom elevations at two points within tank. Water 

sensor is placed in low end of tank or in pre-existing cross section of water inside tank. 

For example:

For a printed circuit board water sensor, the test period to detect a 0.1 gph leak rate in a 

10,000 gallon (96"dia x 324"lg) level tank without a striker plate and without water in the 

tank is 51 minutes for water ingress to contact the water sensor plus 38 minutes to allow the 

sensor to detect the "minimum detectable change in water level" (see "Water Sensor" 

section below). 

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

294

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Tanknology, VacuTect 

Test Period For example:

For a magnetostrictive water sensor, the test period to detect a 0.1 gph leak rate in a 10,000 

gallon (96"dia x 324"lg) level tank without a striker plate and without water in the tank is 37 

minutes for water ingress to contact the water sensor plus 2 minutes to allow the sensor to 

detect the "minimum detectable change in water level" (see "Water Sensor" section below). 

Test Pressure Required test pressure is a function of tank construction, burial depth, product level in the 

tank, and water level in tank excavation backfill. 

Pressure differential across tank wall at the bottom of the tank must be at least 0.5 psi. 

Pressure differential across the tank wall is equal to the absolute value of vacuum applied to 

tank, plus the pressure of the tank excavation backfill on tank, plus groundwater pressure on 

tank, minus pressure of liquid in tank. 

If water level in tank excavation backfill is not determined by wells, probes or pump boxes in 

the tank excavation backfill, test pressure calculation must account for both: 

1) water level just above bottom of tank to achieve minimum 0.5 psi at worst case condition, 

and 

2) tank completely submerged to assure tank is not damaged from over pressurization. 

Temperature Sonic emission and water ingress are independent of product temperature. 

Water Sensor Must be used if water level in tank excavation backfill is above tank bottom or if water level 

in tank excavation backfill was not determined. 

Printed circuit board sensor minimum detectable water level is 0.022 inch, and minimum 

detectable change in water level is 0.016 inch. 

Magnetostrictive sensor minimum detectable water level is 0.017 inch, and minimum 

detectable change in water level 0.001 inch. 

Groundwater If groundwater level in tank excavation backfill is above bottom of tank, or if groundwater 

level in tank excavation backfill is not determined, test time must be sufficient to detect 

water ingress using one of the above water sensors. 

Comments Evaluated using gasoline, diesel, Jet-A, and JP-4. 

Microphone (hydrophone) should be located within 60 feet of any possible leak source. 

Vacuum test method may not be effective in some tank excavation backfill (such as clay) 

because it may plug holes in tank. 

If free product is present in tank excavation backfill, a leak in the free product zone may not 

be detected by a vacuum test method. 

A well point or observation well in the tank excavation backfill can help identify the presence 

of free product, tank excavation backfill material, and water elevation in the tank excavation 

backfill. 

More that 4 psi pressure differential across the tank wall at any location in the tank could 

damage tank. 

Tanknology Evaluator: Ken Wilcox Associates 

11000 North MoPac Expressway, Suite 500 Tel: (816) 443-2494 

Austin, TX 78759 Dates of Evaluation: 10/28/91, 09/18/92, 

Tel: (800) 800-4633 02/20/92, 01/18/94, 02/23/96 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

295

Issue Date: November 22, 1995 

Revision Date: November 21, 2002 

Tanknology

Computerized VPLT Testing System

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL)

Certification Leak rate of 0.1 gph with PD = 99.9% and PFA = 0.1%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 18,000 gallons. Tank must contain minimum 24 inches of product.

Waiting Time Must be long enough between delivery and testing to ensure a temperature change of 

less than 0.09 degrees F per hour, typically a minimum of 2 hours. 

None between dispensing and testing. There must be no delivery during waiting time.

Test Period Minimum of 2 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from average over data window. 

There must be no dispensing or delivery during test.

Temperature Average for product is typically determined by 5 thermistors. 

A minimum of 1 thermistor is required.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a 

minimum net pressure of 1 psi at bottom of tank during test.

Calibration Thermistors must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

Tanknology Evaluator: Ken Wilcox Associates 

11000 North MoPac Expressway, Suite 500 Tel: (816) 443-2494 

Austin, TX 78759 Date of Evaluation: 02/15/93 

Tel: (800) 800-4633 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

296

Issue Date: November 22, 1995 

Revision Date: November 21, 2002 

Tanknology

Sure Test - Assured Tight System, Series IV

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL)

Certification Leak rate of 0.1 gph with PD = 99.99% and PFA = 0.005%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 18,000 gallons. 

Tank must be between 11 and 95% full.

Waiting Time Minimum of 6 hours between delivery and testing. None between dispensing and 

testing. 

There must be no delivery during waiting time.

Test Period Minimum of 3 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from average of subsets of all collected data. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by temperature sensor probes. 

A minimum 12 inches of product must be present for the temperature probes to 

operate properly.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted during test to 

provide a minimum net pressure of 1 psi at bottom of tank during test. 

Calibration Temperature probes and floats must be checked for proper operation prior to each test 

in accordance with manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

Tanknology Evaluator: ADA Technologies 

11000 North MoPac Expressway, Suite 500 Tel: (303) 792-5615 

Austin, TX 78759 Date of Evaluation: 09/09/92 

Tel: (800) 800-4633 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

297

Issue Date: February 17, 1998 

Revision Date: May 5, 2003 

TeleData, Inc.

TankMate Versions 3.12, 3.20

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.1 gph with PD = 99.8% and PFA = 0.02% for both single and manifolded tank 

systems. 

"If a method meets the requirement for detecting a leak rate of 0.1 gph, it will meet the 

requirement for 0.2 gph.", according to "Standard Test Procedures for Evaluating Leak Detection 

Methods: Statistical Inventory Reconciliation Methods", EPA/530/UST-90/007, June 1990, Section 

7.2.3, page 30. 

Leak 

Threshold

0.05 gph. 

This leak threshold is for evaluation purposes only. 

A tank system should not be declared tight if the test result indicates a 

loss or gain that equals or exceeds the leak threshold calculated from the 

data set. This leak threshold may be different than the above leak threshold. 

Gains (water ingress) are analyzed and evaluated on and individual basis. 

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor. 

Tank Capacity Maximum of 60,000 gallons for single tank. 

Maximum of 60,000 gallons cumulative capacity for manifolded tank systems with no more than 3 

tanks in the system. 

Data 

Requirement

Minimum of 15 days of data is required. 

System 

Features

Method of data analysis that system employs, and was used during evaluation process, is 

exclusive of any external control by vendor. 

System consists of a fully automated software package with embedded algorithms for conducting 

leak detection testing. Consequently, third party evaluation procedure demonstrated that system 

can be used in-house with no requirement for direct vendor participation. 

Evaluation 

Features

Evaluator tested this system for in-house use. 

Computer program disk along with instructional documentation was supplied by vendor to 

evaluator. 

Evaluator, without vendor involvement, analyzed required data and performed evaluation using 

program disk and accompanying documentation. Vendor was NOT present as an observer during 

evaluation. 

Comments 46% of data sets evaluated were from manifolded tank systems. 

Of 41 data sets submitted for evaluation, all were analyzed with conclusive results. 

Median monthly throughput of tanks evaluated was 53,349 gallons. 

Leak rates of 0.05, 0.10, and 0.20 gph were used in the evaluation. 

Data sets evaluated were supplied by the evaluator. 

According to vendor, TankMate Versions 3.12 and 3.20 are the same software. 

TeleData, Inc. Evaluator: Piotr Blass, Ph.D. 

900 East Ocean Blvd., Suite 250 Tel: (407) 369-3467 

Stuart, FL 34994 Date of Evaluation: 05/15/97 

Tel: (772) 219-4661 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

298

Issue Date: November 22, 1995 

Revision Date: April 28, 2005 

Tidel Engineering, Inc.

LIPSPC-301-0730-001, LIP-301-0729-001 

Line Integrity Probe and Submersible Pump Controller

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol.

Leak 

Threshold

2.0 gph for leak rate of 3.0 gph. 0.06 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel.

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure.

Pipeline 

Capacity

Maximum of 129 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is 1 minute for leak rate of 3.0 gph. 

Response time is 1 hour, 30 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a permanently installed microprocessor. 

Calculations are automatically performed by the microprocessor.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown, message display, and alarm activation if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Tidel Engineering, Inc. Evaluator: Ken Wilcox Associates 

2310 McDaniel Dr. Tel: (816) 443-2494 

Carrollton, TX 75006 Date of Evaluation: 02/02/93 

Tel: (800) 678-7577 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

299

Issue Date: April 18, 1997 

Revision Date: September 11, 1998 

Tidel Engineering, Inc.

Tidel Environmental Monitoring System, 3500 Series 

(Ultrasonic Probes #401-0009, #401-0010, #401-0023)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.3% and PFA = 4.7% for 2 hour test. 

Leak rate of 0.2 gph with PD = 99.5% and PFA = 0.5% for 4 hour test. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 2 hours, 29 minutes between delivery and testing. 

Minimum of 15 minutes after dispensing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours to achieve PD = 98.6% and PFA = 1.4%. 

Minimum of 4 hours to achieve PD = 99.5% and PFA = 0.5%. 

Test data are acquired and recorded by the microprocessor contained within the EMS console. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined from the measurement of the change in the speed of sound. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.48 inches. 

Minimum detectable water level change is 0.035 inch. 

Calibration Temperature sensors and ultrasonic probe must be checked and, if necessary, calibrated in 

accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

The water sensor, temperature sensor, and product level monitor are contained in a single 

ultrasonic probe. Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

Tidel Engineering, Inc. Evaluator: Ken Wilcox Associates 

2310 McDaniel Dr. Tel: (816) 443-2494 

Carrollton, TX 75006 Date of Evaluation: 03/16/95 

Tel: (800) 678-7577 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

300

Issue Date: November 22, 1995 

Revision Date: March 10, 2000 

Tidel Engineering, Inc.

Tidel Environmental Monitoring System, EMS 2000, 3000, 3500 Series 

(Ultrasonic Probes #401-0009, #401-0010, #401-0021, #401-0022)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 96.2% and PFA = 3% for ultrasonic probes #401-0009 and 

#401-0010. 

Leak rate of 0.2 gph with PD = 99.91% and PFA = 0.09% for ultrasonic probes #401-0021 

and #401-0022. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 2 hours between delivery and testing. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 6 hours. 

Test data are acquired and recorded by a microprocessor contained within the EMS console. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 temperature sensors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.48 inches. 

Minimum detectable water level change is 0.035 inch. 

Calibration Temperature sensors and ultrasonic probe must be checked and, if necessary, calibrated in 

accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

EMS 2000 and 3000 Series are no longer manufactured by Tidel. 

Tidel Engineering, Inc. Evaluator: Ken Wilcox Associates 

2310 McDaniel Dr. Tel: (816) 443-2494 

Carrollton, TX 75006 Date of Evaluation: 06/07/93 

Tel: (800) 678-7577 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

301

Issue Date: April 18, 1997 

Revision Date: March 10, 2000 

Tidel Engineering, Inc.

Tidel Environmental Monitoring System, EMS 4000 

(Ultrasonic Probe #312-9000)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 97.4% and PFA = 2.6% for 2 hour test. 

Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1% for 4 hour test. 

Leak rate of 0.1 gph with PD = 98.6% and PFA = 1.4% for 5 hour test. 

Leak rate of 0.1 gph with PD = 99.7% and PFA = 0.3% for 6 hour test. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 2 hours, 29 minutes between delivery and testing. 

Minimum of 15 minutes between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours to achieve PD = 97.4% and PFA = 1.8% for leak rate of 0.2 gph. 

Minimum of 4 hours to achieve PD = 99.9% and PFA = 0.1% for leak rate of 0.2 gph. 

Minimum of 5 hours to achieve PD = 98.6% and PFA = 1.4% for leak rate of 0.1 gph. 

Minimum of 6 hours to achieve PD = 99.7% and PFA = 0.3% for leak rate of 0.1 gph. 

Test data are acquired and recorded by the microprocessor contained within the EMS console. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined from the measurement of the change in the speed of sound. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.045 inches. 

Minimum detectable water level change is 0.053 inch. 

Calibration Gain adjustment on probe must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there 

is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. As product level is lowered, leak rate in a leaking tank 

decreases (due to lower head pressure). Consistent testing at low levels could allow a leak to remain 

undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains 

product. 

This is a longer version of model #312-9001. 

Tidel Engineering, Inc. Evaluator: Ken Wilcox Associates 

2310 McDaniel Dr. Tel: (816) 443-2494 

Carrollton, TX 75006 Date of Evaluation: 03/16/95 

Tel: (800) 678-7577 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

302

Issue Date: April 18, 1997 

Revision Date: March 10, 2000 

Tidel Engineering, Inc.

Tidel Environmental Monitoring System, EMS 4000 

(Ultrasonic Probe #312-9001)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1%. 

Leak rate of 0.1 gph with PD = 97.9% and PFA = 2.1%. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after consultation 

with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 2 hours, 23 minutes between delivery and testing. 

Minimum of 15 minutes between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours for leak rate of 0.2 gph. 

Minimum of 4 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by the microprocessor contained within the EMS console. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined from the measurement of the change in the speed of sound. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.045 inches. 

Minimum detectable water level change is 0.053 inch. 

Calibration Gain adjustment on probe must be checked annually and, if necessary, calibrated in accordance 

with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

This is a shorter version of model #312-9000. 

Tidel Engineering, Inc. Evaluator: Ken Wilcox Associates 

2310 McDaniel Dr. Tel: (816) 443-2494 

Carrollton, TX 75006 Date of Evaluation: 03/16/95 

Tel: (800) 678-7577 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

303

Issue Date: November 22, 1995 

Revision Date: August 23, 1999 

Tidel Engineering, Inc.

EMS-3500 Liquid Discriminatory Probes Part 301-0635, 

Containment Sump Probes Part 301-0642, 

Tidel Detector #301-0752-001

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: electrical conductivity/hydrocarbon sensitive polymer (Liquid Discriminatory Probes Part 

301-0635), magnetic switch/float and hydrocarbon sensitive polymer (Containment 

Sump Probes Part 301-0642), float switch (Tidel Detector #301-0752-001) 

Test Results:

Liquid Discriminatory Probes Part 301-0635 unleaded gasoline water

Response time (min) 3.59 0.96 

Recovery time (min) 13.18 <1 

Product activation height (cm) 1.76 0.49 

Lower detection limit (cm) 4.19 1.52 

Containment Sump Probes Part 301-0642 high* low*

Response time (min) 6.39 4.12 4.76 

Recovery time (min) >60 <1 <1 

Product activation height (cm) 2.27 19.22 4.31 

Lower detection limit (cm) 2.32 N/A** 4.31 

50% by weight 

ethylene glycol in water

30% by weight 

calcium chloride in water

Tidel Detector #301-0752-001 high low high low

Response time (min) 21.91 30.10 22.27 31.08 

Recovery time (min) <1 <1 <1 <1 

Product activation height (cm) 28.92 2.75 28.82 2.48 

*The "high" and "low" refer to high and low level alarm points of hydrostatic sensors. 

**See Glossary 

 

Specificity Results (in addition to above for Liquid Discriminatory Probes Part 301-0635 and 

Containment Sump Probes Part 301-0642):

Activated: synthetic gasoline, diesel, heating oil #2. 

Comments:

Liquid Discriminatory Probes Part 301-0635 and Tidel Detector #301-0752-001 are reusable. 

Containment Sump Probes Part 301-0642 was tested to determine its capability of detecting hydrocarbons 

floating on water. A Lower detection limit thickness of 0.04 cm was declared, on average, in 16 minutes, 41 

seconds with recovery time averaging 12 minutes, 55 seconds. 

Tidel Detector #301-0752-001 is intended to monitor the level of either ethylene glycol or calcium chloride 

solutions in interstitial or annular space of a double-walled tank. Detector activates an alarm if any significant 

gain or loss of solution occurs. 

Tidel Engineering, Inc. Evaluator: Carnegie Mellon Research Institute 

2310 McDaniel Dr. Tel: (412) 268-3495 

Carrollton, TX 75006 Dates of Evaluation: 01/29/93, 02/17/93, 

Tel: (800) 678-7577 04/20/93 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

304

Issue Date: November 22, 1995 

Revision Date: August 23, 1999 

Tidel Engineering, Inc.

EMS-3500 with Monitoring Well Probe Part 301-0641, Sheen Probes Part 301-0687, 

Tidel Detector #301-0762

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: conductivity via resistor ladder network (Monitoring Well Probe Part 301-0641), 

electrical conductivity/hydrocarbon sensitive polymer (Sheen Probes Part 301-0687 

and Tidel Detector #301-0762). 

Test Results:

Monitoring Well Probe Part 301-0641 unleaded gasoline synthetic gasoline

Detection time (min:sec) 0:04 0:07 

Fall time (min) <1 <1 

Lower detection limit (cm) 0.32 0.32 

Sheen Probes Part 301-0687 

Detection time (min:sec) 7:45 3:35 

Fall time (min:sec) 18:01 16:57 

Lower detection limit (cm) 0.02 0.04 

Tidel Detector #301-0762 

Detection time (min:sec) 9:31 7:05 

Fall time (min:sec) 55:42 17:04 

Lower detection limit (cm) 0.04 0.08 

Specificity Results (in addition to above):

Activated: n-hexane, diesel, jet-A fuel, JP-4 jet fuel (except Sheen Probes Part 301-0687), toluene, 

xylene(s). 

Comments:

Sensors are reusable. 

Tidel Engineering, Inc. Evaluator: Carnegie Mellon Research Institute 

2310 McDaniel Dr. Tel: (412) 268-3495 

Carrollton, TX 75006 Dates of Evaluation: 02/02/93, 01/31/93, 

Tel: (800) 678-7577 03/18/93 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

305

Issue Date: November 22, 1995 

Revision Date: August 23, 1999 

Tidel Engineering, Inc.

Tidel Detector #301-0324-001, #301-0325-001, #301-0326-001, #301-0326-002

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: electrical conductivity 

Test Results:

Tidel Detector #301-0324-

001, #301-0325-001 unleaded gasoline synthetic gasoline JP-4 jet fuel

Detection time (sec) 2 2 1 

Fall time (sec) 1 2 2 

Lower detection limit (cm) 0.16-0.32 0.16-0.32 0.16-0.32 

Tidel Detector #301-0326-

001, #301-0326-002 

Detection time (sec) 4 7 2 

Fall time (sec) 3 4 4 

Lower detection limit (cm) 0.08-0.32 0.08-0.32 0.08-0.32 

Specificity Results (in addition to above):

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s). 

Manufacturer’s specifications:

Tidel Detector #301-0324-001

Application: Liquid sensor, water, used in 4" monitoring well. 

Sensor: Magnetism and conductivity pins. 

Detection Range: 1/8" floating product on groundwater or 1.5" free product. 

Tidel Detector #301-0325-001

Application: Liquid sensor, water or hydrocarbon used in reservoir, sump or pipeline trench. 

Sensor: Magnetism and conductivity pins. 

Detection Range: 1/8" floating product on groundwater or 1.5" free product. 

Tidel Detector #301-0326-001

Application: Liquid sensor, water, used in 2" monitoring well. 

Sensor: Magnetism and conductivity pins. 

Detection Range: 1/8" floating product on groundwater or 2.5" free product. 

Tidel Detector #301-0326-002

Application: Liquid sensor, water, used in annulus of double-wall steel tanks. 

Sensor: Magnetism and conductivity pins. 

Detection Range: 1/8" floating product on groundwater or 2.5" free product. 

Comments: 

Sensors are reusable. 

Lower detection limit has been statistically determined to be within the range specified above. 

Tidel Engineering, Inc. Evaluator: Radian Corp. 

2310 McDaniel Dr. Tel: (512) 454-4797 

Carrollton, TX 75006 Date of Evaluation: 07/08/91 

Tel: (800) 678-7577 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

306

Issue Date: November 22, 1995 

Revision Date: August 23, 1999 

Tidel Engineering, Inc.

EMS-3000 301-0328-001, 301-0330-001 

and 

EMS-3500 Vapor Sensor Probe Part #301-0634

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: adsistor 

Test Results:

EMS-3000 

301-0328-001, 301-0330-001 unleaded gasoline synthetic gasoline JP-4 jet fuel

Detection time (min:sec) 1:31 1:05 1:26 

Fall time (min:sec) 5:39 4:23 9:38 

Lower detection limit (ppm) 10-100 10-500 10-50 

EMS-3500 

Vapor Sensor Probe Part #301-0634 

Detection time (min:sec) 2:46 1:41 1:50 

Fall time (hr)* >1 >1 >1 

Lower detection limit (ppm) 100 500 100 

* The vapor sensor probe was recalibrated when it did not recover, after 1 hour, from exposure to test 

vapors. 

Specificity Results (in addition to above for EMS-3000 301-0328-001, 301-0330-001):

Activated: toluene, xylene(s) 

Not Activated: n-hexane. 

Specificity Results (in addition to above for EMS-3500 Vapor Sensor Probe Part No. 301-

0634):

Activated: n-hexane, toluene, xylene(s). 

Manufacturer’s specifications:

EMS-3500 Vapor Sensor Probe Part No. 301-0634 is for use in normally dry monitoring wells to detect 

hydrocarbon vapors. It can be used in monitoring wells up to 20 feet deep. The probe will alarm if it 

comes in contact with water and must be removed immediately to prevent damage to probe. 

Comments: 

EMS-3000 lower detection limit has been statistically determined to be within the range specified above. 

Tidel Engineering, Inc. Evaluator: Radian Corp. 

2310 McDaniel Dr. Tel: (512) 454-4797 

Carrollton, TX 75006 Dates of Evaluation: 07/08/91, 03/18/93 

Tel: (800) 678-7577 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

307

Issue Date: November 22, 1995 

Revision Date: November 6, 1997 

Tokheim Corp.

Tokheim Pressure Monitor, Models PM 101, 585A-PM

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

2.25 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at 150% operating pressure.

Pipeline 

Capacity

Maximum of 78 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is 4 seconds.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared.

Calibration System must be checked semi-annually and, if necessary, calibrated in accordance 

with manufacturer's instructions.

Comments No longer manufactured by Tokheim Corporation.

Tokheim Corp. Evaluator: Vista Research 

U. S. Division is bankrupt as of 02/2003 Tel: (415) 966-1171 

Website: www.tokheim.com Date of Evaluation: 11/02/90 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

308

Issue Date: July 31, 2009 

Revision Date: August 20, 2009

TOPS, Inc. 

(marketed by Westech Inc.)

Pnuemercator TMS 2000, TMS 3000 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.0% and PFA = 5% for 2 hour test. 

Leak rate of 0.2 gph with PD = 99.8% and PFA = 0.2% for 4 hour test. 

Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1% for 8 hour test. 

Leak rate of 0.1 gph with PD = 95.3% and PFA = 4.7% for 7 hour test. 

Leak rate of 0.1 gph with PD = 95.8% and PFA = 4.2% for 8 hour test. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 20,000 gallons. 

Tank must be between 20 and 95% full. 

Waiting Time Minimum of 8 hours between delivery and testing. 

Minimum of 20 minutes between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours for leak rate of 0.2 gph. 

Minimum of 7 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by probe which contains 5 thermistors. 

At least one thermistor must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.488 inch. 

Minimum detectable change in water level is 0.124 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is 

a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains 

product. 

Equipment is manufactured by Pneumercator for TOPs, Inc. and is marketed by Westech, Inc. 

TOPS, Inc. Evaluator: Ken Wilcox Associates 

P.O. Box 57307 Tel: (816) 443-2494 

Salt Lake City, Utah 84157 Date of Evaluation: 07/15/97 

Tel: (800) 433-8831 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

309

Issue Date: November 7, 2001 

Revision Date: July 20, 2004 

TotalSIR

TotalSIR Version 1.0

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.2 gph with PD > 99.9% and PFA < 0.1% for leak threshold of 0.1 gph. 

Leak rate of 0.2 gph with PD > 97.2% and PFA < 0.1% for leak threshold of 0.16 

gph.

Leak 

Threshold

0.1 and 0.16 gph for leak rate of 0.2 gph. 

These leak thresholds are for evaluation purposes only. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds the leak threshold calculated from the data set. This leak 

threshold may be different than the above leak thresholds.

Applicability Gasoline, diesel, kerosene. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 45,000 gallons for single tanks. 

Maximum of 45,000 gallons cumulative capacity for manifolded tank systems with no 

more than 4 tanks in system.

Data 

Requirement

Minimum of 23 days of product level and throughput data.

System 

Features

Method of data analysis that system employs, and was used during evaluation 

process, is exclusive of any external control by vendor. 

System consists of a fully automated software package with embedded algorithms for 

conducting leak detection testing. Consequently, third party evaluation procedure 

demonstrated that system can be used in-house with no requirement for direct vendor 

participation.

Evaluation 

Features

This system was tested for in-house use. 

Vendor, with evaluator present, analyzed required data and performed evaluation 

using program disk only. 

Results were presented to evaluator directly from the computer without additional 

vendor involvement.

Comments Gains (water ingress) are investigated using current and previous month raw 

inventory data. 

73% of data sets were from manifolded tank systems. 

Of 41 data sets submitted for evaluation, 4 were inconclusive. 

Median monthly throughput of tanks evaluated was 22,370 gallons. 

Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation. 

Data sets evaluated were supplied by evaluator.

TotalSIR Evaluator: Ken Wilcox Associates 

P.O. Box 2040 Tel: (816) 443-2494 

Cornelius, NC 28031 Date of Evaluation: 04/07/93, 07/18/95, 

Tel: (704) 892-9941 06/16/00, 08/27/01 

E-mail: information@totalsir.com 

URL: www.totalsir.com
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

310

Issue Date: September 14, 2007

TotalSIR

TotalSIR Version 2.0

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.2 gph with PD = 99% and PFA = 1%. 

Leak rate of 0.1 gph with PD = 99% and PFA = 1%.

Leak 

Threshold

0.10 gph for a leak rate of 0.2 gph. 

0.05 gph for a leak rate of 0.1 gph. 

These leak thresholds are for evaluation purposes only. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds the leak threshold calculated from the data set. This leak 

threshold may be different than the above leak thresholds.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 45,000 gallons for single tanks. 

Maximum of 45,000 gallons cumulative capacity for manifolded tank systems with no 

more than 4 tanks in system.

Data 

Requirement

Minimum of 23 days of product level and flow through data.

Comments 68% of data sets evaluated were from manifolded tank systems. 

Of 41 data sets submitted for evaluation, all were analyzed with conclusive results. 

Median monthly throughput of tanks evaluated was 22,370 gallons. 

Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation. 

Data sets used in this evaluation were supplied by evaluator. 

100% of inventory data used in this evaluation were gauge stick readings. 

Gains (water ingress) are analyzed and evaluated on an individual basis. 

The same data sets were used for both the 1995 and 1997 evaluations.

TotalSIR Evaluator: Ken Wilcox Associates 

P.O. Box 2040 Tel: (816) 443-2494 

Cornelius, NC 28031 Date of Evaluation: 01/27/92, 06/8/95, 07/27/97 

Tel: (704) 892-9941 

E-mail: information@totalsir.com 

URL: www.totalsir.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

311

Issue Date: November 22, 1995 

Revision Date: November 19, 2010 

Training and Services Corp. 

(originally listed as Hasstech)

AcuRite 

(for Rigid and Flexible Pipelines)

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

0.01 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4.

Specification System tests rigid and flexible pipelines. 

Tests are conducted at 150% operating pressure. 

Mechanical line leak detectors shall be removed or manually isolated from the pipeline 

for duration of test, or check valve in pump must be manually closed if testing is to be 

conducted with mechanical line leak detector in place.

Pipeline 

Capacity

Maximum of 150 gallons.

Waiting Time Minimum of 6 hours between delivery and testing. 

Minimum of 30 minutes between dispensing and testing.

Test Period Minimum of 30 minutes. 

Test data are acquired and recorded manually. 

Manual calculations are performed by the operator on site.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Operating instructions include specific procedures for flexible pipelines. 

Formerly manufactured by Hasstech.

Training and Services Corp. Evaluator: Lamar University 

501 Bains St., Suite 113 Tel: (409) 880-8788 

Brookshire, TX 77423 Date of Evaluation: 03/25/91, 04/02/01 

Tel: (281) 934-3839 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

312

Issue Date: November 22, 1995 

Revision Date: November 6, 1997 

Triangle Environmental, Inc.

TEI Model LT-3, Version 1.0

LINE TIGHTNESS TEST METHOD

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests fiberglass and steel pipelines. 

Tests are conducted at 150% operating pressure.

Pipeline 

Capacity

Maximum of 80 gallons.

Waiting Time None between delivery and testing. 

Minimum of 15 minutes between dispensing and testing.

Test Period Minimum of 15 minutes. 

Test data are acquired and recorded manually. 

Manual calculations are performed by the operator on site.

Temperature Product change per hour must be less than 4 degrees F.

Calibration Sensors must be checked annually and calibrated semi-annually in accordance with 

manufacturer's instructions.

Triangle Environmental, Inc. Evaluator: United States Testing Co., Inc. 

730 North Mariposa St. Tel: (213) 723-7181 

Burbank, CA 91506 Date of Evaluation: 03/03/92 

Tel: (800) 767-6004 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

313

Issue Date: November 22, 1995 

Revision Date: December 6, 2002 

Triangle Environmental, Inc.

TEI Ullage Test, Version 1.0 (Vacuum Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

A tank system should not be declared tight when an increase in the acoustic noise level 

(above background) of the tank under vacuum is detected due to air or water ingress.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer.

Tank Capacity Maximum ullage volume is 15,000 gallons. 

Microphone should be located within 24 feet of all points within the ullage.

Waiting Time None if test is conducted after the underfilled tank test.

Test Period Minimum of 1 minute. 

There must be no dispensing or delivery during test.

Test Pressure Vacuum of 1 psi must be maintained in ullage. 

If vacuum cannot be maintained, see manufacturer's instructions.

Temperature Acoustic signal is independent of product temperature.

Groundwater Depth to the groundwater in tank excavation backfill must be determined. 

If groundwater is above product level, vacuum must be adequate to detect an ingress 

of groundwater.

Calibration Sensors must be calibrated before each test in accordance with manufacturer's 

instructions.

Comments Manifolded tank systems must be isolated prior to test. Evaluated using unleaded 

gasoline. 

Tests only ullage portion of tank. 

Product-filled portion of tank must be tested using an underfill test method. 

Microphone was 24 feet away from the leak source during evaluation. 

Headphones are used during test to listen for the signal of air ingress. 

Noise signals are tape recorded (not digitally recorded). 

Test method may not be effective in some tank excavation backfill (such as clay) 

because it may plug holes in tank. 

If soil is saturated with product, air or water ingress may not be declared by vacuum 

test. 

A well point in tank excavation backfill may help identify presence of this condition.

Triangle Environmental, Inc. Evaluator: United States Testing Co., Inc. 

730 North Mariposa St. Tel: (213) 723-7181 

Burbank, CA 91506 Date of Evaluation: 05/05/93 

Tel: (800) 767-6004 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

314

Issue Date: November 22, 1995 

Revision Date: May 3, 2006 

Triangle Environmental, Inc.

TEI System 5000, Version 1.0, Version 1.0W

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (VACUUM)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

A tank system should not be declared tight when the acoustic noise level of the tank 

under vacuum is greater than the calibrated background acoustic noise level (prior to 

evacuation). 

A tank system should not be declared tight if any water ingress is detected. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Tank Capacity Maximum of 20,000 gallons. 

Tank must be minimum 14% full. 

Microphone should be located within 24 feet of all points within the tank. 

Waiting Time None between delivery and testing. 

Test Period Minimum of 1 minute when groundwater is below bottom of tank. 

When groundwater is above bottom of tank, Version 1.0W (includes either Triangle TEI 

System 5000 Water Sensor or Estabrook EZ-3 Conductivity Water Sensor) must be 

used and test period extended to ensure water ingress detection during test. 

For Triangle TEI System 5000 Water Sensor: 

Minimum of 10 minutes when using (time begins after sensor is set up and 

calibrated). 

For Estabrook EZ-3 Conductivity Water Sensor: 

Minimum test time must be calculated using Estabrook EZ-3 operations manual, 

but cannot be less than 1 hour. Calculation is based on tank size, groundwater 

elevation, and product elevation. 

There must be no dispensing or delivery during test. 

Test Pressure Vacuum as directed in operating instructions. 

If vacuum cannot be maintained, see manufacturer's instructions. 

Temperature Acoustic signal is independent of product temperature. 

Water 

Sensors 

Version 1.0W (includes either Triangle TEI System 5000 Water Sensor or Estabrook 

EZ-3 Conductivity Water Sensor) must be used to detect water ingress. 

For Triangle TEI System 5000 Water Sensor: 

Minimum detectable water level is 0.0532 inch. 

Minimum detectable change in water level is 0.00013 inch. 

Minimum water level in tank must be adjusted to at least 0.0532 inch at the sensor 

before starting the test. 

For Estabrook EZ-3 Conductivity Water Sensor: 

Minimum detectable water level is 0.014 inch. 

Minimum detectable change in water level is 0.0095 inch. 

 Minimum water level in tank must be adjusted to at least 0.014 inch at the sensor 

 before starting the test. 

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

315

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Triangle Environmental, Inc., TEI System 

5000 Version 1.0, Version 1.0W

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

Version 1.0 can only be used when groundwater is below bottom of tank. 

Version 1.0W must be used when groundwater is above bottom of tank. 

Calibration Acoustic sensor must be calibrated before each test in accordance with manufacturer's 

instructions. 

When using Version 1.0W, Triangle TEI System 5000 Water Sensor or Estabrook EZ-3 

Conductivity Water Sensor must be calibrated before each test in accordance with 

manufacturer's instructions. 

Comments Manifolded tank systems must be isolated prior to test. 

Evaluated using unleaded gasoline. 

Microphone was 24 feet away from the leak source during evaluation. 

Headphones are used during test to listen for air ingress signal. Noise signals are tape 

recorded rather that recording the noise levels in decibels. 

Vacuum test method may not be effective in some tank excavation backfill (such as 

clay) because it may plug holes in tank. 

If soil is saturated with product, air or water ingress may not be detected by vacuum 

test. 

A well point in tank excavation backfill may help identify presence of this condition. 

Triangle Environmental, Inc. Evaluator: United States Testing Co., Inc. 

730 North Mariposa St. Tel: (213) 723-7181 

Burbank, CA 91506 Date of Evaluation: 02/04/93 

Tel: (800) 767-6004 Evaluator: Ken Wilcox Associates 

Tel: (816) 443-2494 

Date of Evaluation: 01/20/98 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

316

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

Triangle Environmental, Inc.

TEI System 4000, Version 1.0

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL)

Certification Leak rate of 0.1 gph with PD = 99% and PFA = 4.8%.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 100% full.

Waiting Time Minimum of 6 hours between delivery and testing. 

There must be no dispensing or delivery during waiting time.

Test Period Minimum is determined by system's computer. 

Average was 4 hours during the evaluation. 

Leak rate is calculated from last 2 hours of test period data. 

Test data are acquired and recorded by system's computer. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by a minimum of 3 thermistors.

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a 

minimum net pressure of 1 psi at bottom of tank during test.

Calibration Thermistors must be calibrated before each test in accordance with manufacturer's 

instructions.

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. As product level is lowered, leak rate in 

a leaking tank decreases (due to lower head pressure). Consistent testing at low 

levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

May also be used as an overfill test method.

Triangle Environmental, Inc. Evaluator: United States Testing Co., Inc. 

730 North Mariposa St. Tel: (213) 723-7181 

Burbank, CA 91506 Date of Evaluation: 04/02/91 

Tel: (800) 767-6004 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

317

Issue Date: November 22, 1995 

Revision Date: April 17, 2003 

Tyco Thermal Controls LLC 

(originally listed as Raychem Corp.)

TraceTek Alarm and Locator Modules with 

TT502, TT5000, TT3000 Fuel Sensing Cable

INTERSTITIAL DETECTOR (LIQUID-PHASE) 

and 

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: electrical conductivity 

Test Results:

unleaded gasoline

TT502 

1/3 MER* 

334 m

2/3 MER 

665 m

MER 

995 m

Response time (min) 22.11 17.13 19.42 

Product activation height (cm) 1.53 1.53 1.53 

Detection length (cm) 61 61 61 

Lower detection limits (cm) 

 Product activation height N/D* N/D 0.77 

 Detection length N/D N/D 10 

TT5000 

1/3 MER 

508 m

2/3 MER 

1016 m

MER 

1524 m

Response time (min) 12.02 9.18 7.51 

Product activation height (cm) 0.74 0.74 0.74 

Detection length (cm) 30.5 30.5 30.5 

Lower detection limits (cm) 

 Product activation height N/D N/D 0.74 

 Detection length N/D N/D 10 

3% by weight salt in water other solutions**

TT3000 

1/3 MER 

508 m

2/3 MER 

1016 m

MER 

1524 m

MER 

1524 m

Response time (min) <1 <1 <1 <1 

Recovery time (min) <1 <1 <1 <1 

Product activation height (cm) <0.3 <0.3 <0.3 <0.3 

Detection length (cm) <15.2 <15.2 <15.2 <15.2 

Lower detection limits (cm) 

 Product activation height N/D N/D <0.3 N/D 

 Detection length N/D N/D <5.08 N/D 

* See glossary. 

** 5% by volume oil in 3% by weight salt water, 10% by volume oil in 3% by weight salt water, 0.1 M 

hydrochloric acid (HCl), 

0.1M sodium hydroxide (NaOH). 

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

318

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Tyco Thermal Controls LLC, TraceTek 

Alarm and Locator Modules with TT502, TT5000, TT3000 Fuel Sensing Cable

Specificity Results (in addition to above for TT502 and TT5000):

Activated: synthetic gasoline, diesel, heating oil #2, jet-A fuel (TT5000 only). 

Not Activated: water. 

Specificity Results (in addition to above for TT3000):

Activated: water 

Not Activated: unleaded gasoline, synthetic gasoline, diesel, JP-8 fuel. 

Comments:

Evaluation also covered quantitative leak location. 

TT502, TT5000 Fuel Sensing cable is not reusable. 

Lower detection limit is calculated at MER only, and cable is assumed to be equally or more sensitive at 

shorter lengths. 

Tyco Thermal Controls LLC Evaluator: Carnegie Mellon Research Institute 

300 Constitution Dr. Tel: (412) 268-3495 

Menlo Park, CA 94025-1164 Dates of Evaluation: 05/15/92, 12/20/95, 

Tel: (800) 545-6258 02/20/98 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

319

Issue Date: August 27, 2007

Tyco Thermal Controls LLC

TraceTek Alarm and Locator Modules with 

TT-FFS Fast Fuel Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE) 

and 

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: electrical conductivity 

Test Results:

TT-FFS (.005" fuel on water) synthetic gasoline diesel jet-A fuel crude oil

Response time (min:sec) <1 <1 <1 2:33 

TT-FFS (.024" fuel on flat surface)

Response time (min) <1 <1 <1 11 

Specificity Results: 

Activated: synthetic gasoline, diesel, jet-A fuel, crude oil. 

Not Activated: water 

Comments: 

All data points are the average of 6 samples.

Dry surface fuel layer depth estimated at .005" for gasoline, diesel and jet-A, .024" for crude oil. 

Fuel layer for fuel floating on water estimated to be .005" for all tests. 

Sensors can be cleaned and reset by soaking in naphtha and allowing them to dry in the air for 1 hour. 

Sensors that do not reset must be replaced. 

Sensor can be periodically tested with naphtha. Manufacturer recommends 6 month interval. 

Tyco Thermal Controls LLC Evaluator: Ken Wilcox Associates 

300 Constitution Dr. Tel: (816) 443-2494 

Menlo Park, CA 94025-1164 Date of Evaluation: 09/06 

Tel: (800) 545-6258 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

320

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

Universal Sensors and Devices, Inc.

TICS-1000 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 96.6% and PFA = 3.4%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be minimum 90% full. 

Waiting Time Minimum of 8 hours between delivery and testing. 

None between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 6 hours. 

Test data are acquired and recorded by a microprocessor. 

Leak rate is calculated from average of subsets of all collected data. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 resistance temperature detectors 

(RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.83 inch. 

Minimum detectable water level change is 0.0116 inch. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Universal Sensors and Devices, Inc. Evaluator: Ken Wilcox Associates 

9205 Alabama Ave., Unit C Tel: (816) 443-2494 

Chatsworth, CA 91311 Date of Evaluation: 08/20/93 

Tel: (800) 899-7121, (818) 998-7121 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

321

Issue Date: April 18, 1997 

Revision Date: August 23, 1999 

Universal Sensors and Devices, Inc.

LTC-1000 

(Mass Buoyancy Probe)

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 14,244 ft2, leak rate is 1.4 gph with PD = 97.2% and PFA = 2.8%. 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 14,244 ft2) x 1.4 gph]. 

Example: 

For a tank with PSA = 20,000 ft2; leak rate = [(20,000 ft2 ÷ 14,244 ft2) x 1.4 gph] = 2.0 gph. 

Calculated minimum detectable leak rate is 1.18 gph with PD = 95% and PFA = 5%. 

Leak rate may not be scaled below 0.2 gph. 

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 14,244 ft2, leak threshold is 0.7 gph. 

For other tank sizes, leak threshold equals [(PSA in ft2 ÷ 14,244 ft2) x 0.7 gph]. 

Example: 

For a tank with PSA = 20,000 ft2; leak threshold = [(20,000 ft2 ÷ 14,244 ft2) x 0.7 gph] = 1.0 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds the calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single field-constructed vertical tanks larger than 50,000 gallons. 

Maximum product surface area (PSA) is 35,610 ft2 (approximately 213 ft diameter). 

Performance not sensitive to product level. 

Waiting Time Minimum of 3 hours, 42 minutes after delivery. 

Valve leaks and pump drain-back may mask a leak. 

Allow sufficient waiting time to minimize these effects. 

None between dispensing and testing. 

Test Period Minimum of 49 hours. 

There must be no dispensing or delivery during test. 

Temperature Measurement not required by this system. 

Water Sensor None. 

Water leaks are measured as increase in mass inside tank. 

Calibration Probe must be checked and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

Evaluated in a nominal 2,000,000 gallon, vertical underground tank with product surface area (PSA) of 

14,244 ft2. 

Universal Sensors and Devices, Inc. Evaluator: Ken Wilcox Associates 

9205 Alabama Ave. Tel: (816) 443-2494 

Chatsworth, CA 91311 Date of Evaluation: 05/17/96 

Tel: (800) 899-7121, (818) 988-7121 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

322

Issue Date: April 18, 1997 

Revision Date: August 23, 1999 

Universal Sensors and Devices, Inc.

LTC-2000 

(Differential Pressure Probe)

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 14,244 ft2, leak rate is 3.0 gph with PD = 98.8% and PFA = 1.2%. 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 14,244 ft2) x 3.0 gph]. 

Example: 

For a tank with PSA = 20,000 ft2; leak rate = [(20,000 ft2 ÷ 14,244 ft2) x 3.0 gph] = 4.2 gph. 

Calculated minimum detectable leak rate is 2.15 gph with PD = 95% and PFA = 5%. 

Leak rate may not be scaled below 0.2 gph. 

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 14,244 ft2, leak threshold is 0.7 gph. 

For other tank sizes, leak threshold equals [(PSA in ft2 ÷ 14,244 ft2) x 1.5 gph]. 

Example: 

For a tank with PSA = 20,000 ft2, leak threshold = [(20,000 ft2 ÷ 14,244 ft2) x 1.5 gph] = 2.1 

gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds the calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single field-constructed vertical tanks larger than 50,000 gallons. 

Maximum product surface area (PSA) is 35,610 ft2 (approximately 213 ft diameter). 

Performance not sensitive to product level. 

Waiting Time Minimum of 3 hours, 30 minutes after delivery. 

Valve leaks and pump drain-back may mask a leak. 

Allow sufficient waiting time to minimize these effects. 

None between dispensing and testing. 

Test Period Minimum of 48 hours, 18 minutes. 

There must be no dispensing or delivery during test. 

Temperature Measurement not required by this system. 

Water Sensor None. 

Water leaks are measured as increase in mass inside tank. 

Calibration Probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

Evaluated in a nominal 2,000,000 gallon, vertical underground tank with product surface area 

(PSA) of 14,244 ft2. 

Universal Sensors and Devices, Inc. Evaluator: Ken Wilcox Associates 

9205 Alabama Ave. Tel: (816) 443-2494 

Chatsworth, CA 91311 Date of Evaluation: 05/17/96 

Tel: (800) 899-7121, (818) 988-7121 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

323

Issue Date: November 22, 1995 

Revision Date: August 23, 1999 

Universal Sensors and Devices, Inc.

Leak Alert System Models LAL-100, LA-01, LA-02, LA-04, LA-X4, LA-08, DLS-01, LS-20, 

LS-36, LS-70, 

CATLAS with LALS-1 Liquid Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: thermal conductivity 

Test Results: 

unleaded gasoline

Response time (min) 1.24 

Recovery time (min) <1 

Product activation height (cm) 0.61 

Lower detection limit (cm) 0.76 

 

Specificity Results (in addition to above):

Activated: synthetic gasoline, diesel, heating oil #2, water. 

Comments:

Sensors are reusable. 

Universal Sensors and Devices, Inc. Evaluator: Carnegie Mellon Research Institute 

9205 Alabama Ave., Unit C Tel: (412) 268-3495 

Chatsworth, CA 91311 Dates of Evaluation: 06/01/94, 04/22/97 

Tel: (800) 899-7121, (818) 998-7121 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

324

Issue Date: November 22, 1995 

Revision Date: August 23, 1999 

Universal Sensors and Devices, Inc.

Leak Alert System Models LAV-100, LA-01, LA-02, LA-04, LA-X4, LA-08, 

CATLAS with LAVS-1 MOS Vapor Sensor

OUT-OF-TANK DETECTOR (VAPOR-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: metal oxide semiconductor 

Test Results:

unleaded gasoline synthetic gasoline JP-4jet fuel

Detection time (sec) 31 40 42 

Fall time (min:sec) 4:43 4:25 4:30 

Lower detection limit (ppm) 100 N/D* N/D 

* See glossary. 

Specificity Results (in addition to above):

Activated: n-hexane, toluene, xylene(s). 

Universal Sensors and Devices, Inc. Evaluator: Carnegie Mellon Research Institute 

9205 Alabama Ave., Unit C Tel: (412) 268-3495 

Chatsworth, CA 91311 Date of Evaluation: 06/01/94 

Tel: (800) 899-7121, (818) 988-7121 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

325

Issue Date: July 19, 1996 

Revision Date: April 4, 2007 

USTest, Inc. 

(previously listed as Sound Products Manufacturing, Inc.)

UST 2001 and UST 2001 Quick Test 

(Ultrasonic Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 97.5% and PFA = 2.5% for Quick Test. 

Leak rate of 0.1 gph with PD = 95.2% and PFA = 4.8%. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after consultation 

with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 4 hours between delivery and testing. 

Minimum of 15 minutes between dispensing and testing. There must be no delivery during waiting 

time. 

Test Period Minimum of 30 minutes for leak rate of 0.2 gph (Quick Test). 

With a test period of 1 hour, system has PD = 99.9% and PFA = 0.1%. 

Minimum of 1 hour for leak rate of 0.1 gph. 

With a test period of 2 hours, system has PD = 98.6% and PFA = 1.4%. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from data determined to be valid by statistical analysis. There must be no 

dispensing or delivery during test. 

Temperature Average for product is determined from the measurement of the change in the speed of sound. 

Water Sensor Must be used to detect water ingress. Water is declared via an ultrasonic signal ranging to the 

water interface. Minimum detectable water level in the tank is less than 0.1 inch. 

Minimum detectable change in water level is 0.046 inch. 

Calibration Probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

Southwest Environmental Services, Inc. Evaluator: Ken Wilcox Associates 

102 Abigayle Row Tel: (816) 443-2494 

Scott, LA 70508 Date of Evaluation: 06/06/95 

Tel: (337) 235-1184 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

326

Issue Date: November 22, 1995 

Revision Date: April 4, 2007 

USTest, Inc. 

(previously listed as Sound Products Manufacturing, Inc.)

UST 2000/U 

(Pressure and Vacuum Test)

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE)

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

A tank system should not be declared tight when there is a substantial increase in the acoustic 

noise signal (when the tank is under pressure or vacuum) above the background signal (prior to 

pressurization or evacuation) in the frequency interval of 10 kHz to 20 kHz. 

The acoustic signal to noise ratio is preprogrammed into the system's computer and is not 

revealed to or adjustable by the operator. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, waste oil. 

Other liquids may be tested after consultation with the manufacturer. 

Equipment is not in contact with the product. 

Tank Capacity Maximum ullage volume is 7,550 gallons for pressure test and 5,250 gallons for vacuum test. 

Waiting Time None if test is conducted after an underfilled tank tightness test. 

Test Period Minimum of 15 minutes (includes collection of background information). 

There must be no dispensing or delivery during test. 

Test Pressure Net pressure of 2.0 psi or vacuum of 1.0 psi must be maintained in ullage. 

Temperature Acoustic signal is independent of product temperature. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above product level, vacuum test must not be used. 

Pressure test must be conducted using net pressure exceeding 2.0 psi in the ullage. 

Calibration Test equipment must be checked and, if necessary, calibrated by tester before each test. 

Comments Not evaluated using manifolded tank systems. 

Evaluated using unleaded gasoline as test product. 

Tests only ullage portion of tank. 

Product-filled portion of the tank must be tested using an underfill test method. 

Microphone was less than 8 feet, 6 inches from the leak source during evaluation. 

If the background noise is too high, test is inconclusive. 

Maximum background noise is preprogrammed into system's computer and not revealed to or 

adjustable by the technician. 

Vibration due to nearby equipment or dripping condensation may interfere with test. 

Vacuum test method may not be effective in some tank excavation backfill (such as clay) because 

it may plug holes in tank. 

If soil is saturated with product, air or water ingress may not be declared by vacuum test. 

A well point in tank excavation backfill may help identify presence of this condition. 

Southwest Environmental Services, Inc. Evaluator: Ken Wilcox Associates 

102 Abigayle Row Tel: (816) 443-2494 

Scott, LA 70508 Date of Evaluation: 03/24/92 

Tel: (337) 235-1184 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

327

Issue Date: November 22, 1995 

Revision Date: March 20, 2003 

USTest, Inc.

UST 2000/LL

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL)

USTest, Inc., no longer supports the use of this method *

Certification Leak rate of 0.1 gph with PD = 98.12% and PFA = 1.88%. 

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, water, kerosene. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be minimum 15% full. 

There must be at least 20 inches and not more than 67 inches of product in the tank. 

Waiting Time Ranges from 3 to 12 hours between delivery and testing. 

Testing may begin when the rate of product temperature change does not exceed 0.1 degree F per hour.

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 2 hours. 

Test data are acquired and recorded by system’s computer, which does a regression analysis to 

determine the leak rate. 

An ultrasonic device is used to measure changes in product level. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined from the measurement of the change in the speed of sound. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a minimum net 

pressure of 1 psi at bottom of tank during test. 

Calibration Temperature sensors and probes must be checked annually and, if necessary, calibrated in accordance 

with manufacturer’s instructions. 

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains 

product. 

* USTest Inc. has requested removal of the 2000/LL equipment from the NWGLDE List and 

discourages the use of this method due to software security and data integrity problems. 

USTest, Inc. Evaluator: Ken Wilcox Associates 

c/o Dubois, Bryant, Campbell & Schwartz Tel: (816) 443-2494 

P.O Box 909 Date of Evaluation: 06/09/94 

Austin, TX 78767 

512-457-8000 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

328

Issue Date: November 22, 1995 

Revision Date: March 20, 2003 

USTest, Inc.

UST 2000/P

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL)

USTest, Inc., no longer supports the use of this method *

Certification Leak rate of 0.1 gph with PD = 99.9% and PFA = 0.1% for tanks up to 15,000 gallons. 

Leak rate of 0.1 gph with PD = 99.7% and PFA = 0.3% for tanks from 15,000 gallons up to 

45,000 gallons. 

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, water, kerosene. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Maximum of Between 20,000 gallons and 45,000 gallons. 

Tank must be minimum 78.6% full. 

Waiting Time Minimum for tanks up to 45,000 gallons must be determined from the manufacturer's chart of 

“Wait Time versus Tank Volume." This chart must be included in the tank test report. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum for tanks less than 10,000 gallons is one hour. 

Minimum for tanks from 10,000 to 45,000 gallons is determined from the manufacturer's chart of 

“Differential Volume versus Test Duration." 

Line labeled PD = 99.9% must be used. This chart must be included in the tank test report. Test 

data are acquired and recorded by system’s computer, which does a regression analysis to 

determine the leak rate. There must be no dispensing or delivery during test. 

Temperature Average for product is determined from the measurement of the change in the speed of sound. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a minimum net 

pressure of 1 psi at bottom of the tank during test. 

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

* USTest Inc. has requested removal of the 2000/P equipment from the NWGLDE List 

and discourages the use of this method due to software security and data integrity 

problems.

USTest, Inc. Evaluators: Midwest Research Institute 

c/o DuBois, Bryant, Campbell & Schwartz. Tel: (816) 753-7600 

P.O Box 909 and Ken Wilcox Associates 

Austin, TX 78767 Tel: (816) 443-2494 

512-457-8000 Dates of Evaluation: 12/05/90 (1000-10,000 gallons), 

08/04/92 (10,000-45000 gallons) 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

329

Issue Date: August 23, 1999 

Revision Date: April 28, 2005 

Vaporless Manufacturing 

Vaporless LD-2100 or PLC-5000 with 98LD-2000PLC 

(for Rigid and Flexible Pipelines) 

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR 

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol.

Leak 

Threshold

2.5 gph for leak rate of 3.0 gph. 

0.136 gph for leak rate of 0.2 gph. 

0.068 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized flexible, fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 172 gallons for rigid pipelines. 

Maximum of 39.5 gallons for flexible pipelines. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Response time is less than 8 minutes for leak rate of 3.0 gph. 

Response time is 1 hour, 48 minutes to 10 hours, 54 minutes for leak rates of 0.2 and 

0.1 gph. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. Single test to determine if pipeline is leaking. 

LD-2100 is a stand alone system. 

PLC-5000 must be coupled with the 98LD-2000. 

Pump shutdown, message display and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Vaporless Manufacturing Evaluator: Ken Wilcox Associates 

8700 East Long Mesa Drive Tel: (816) 443-2494 

Prescott Valley, AZ 86314 Dates of Evaluation: 05/20/98, 11/10/98 

Tel: (928) 775-5191 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

330

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

Vaporless Manufacturing 

Vaporless LD-2000, LD-2000S 

AUTOMATIC MECHANICAL LINE LEAK DETECTOR 

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

1.7 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized fiberglass or steel pipelines. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 129 gallons. 

Waiting Time None between dispensing and testing. 

None between delivery and testing. 

Test Period Response time is 5 seconds. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

LD2000 - restricted flow to dispenser if leak is declared. 

LD2000S - pump shutoff if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Vaporless Manufacturing Evaluator: Ken Wilcox Associates 

8700 East Long Mesa Drive Tel: (816) 443-2494 

Prescott Valley, AZ 86314 Date of Evaluation: 11/19/90 

Tel: (928) 775-5191 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

331

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

Vaporless Manufacturing 

Vaporless LD-2000E, LD-2000E-S 

(for Flexible Pipelines) 

AUTOMATIC MECHANICAL LINE LEAK DETECTOR 

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 59.6 gallons. 

Waiting Time None between dispensing and testing. None between delivery and testing. 

Test Period Response time is 30 seconds. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. Preset threshold. 

Single test to determine if pipeline is leaking. 

LD2000E - restricted flow to dispenser if leak is declared. 

LD2000ES - pump shutoff if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Enviroflex piping with a bulk modulus* of 1,352 psi was used during evaluation. 

*See glossary.

Vaporless Manufacturing Evaluator: Ken Wilcox Associates 

8700 East Long Mesa Drive Tel: (816) 443-2494 

Prescott Valley, AZ 86314 Date of Evaluation: 12/11/92 

Tel: (928) 775-5191 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

332

Issue Date: November 22, 1995 

Revision Date: November 14, 1997 

Vaporless Manufacturing 

Vaporless LD-2000T, LD-2000T-S 

AUTOMATIC MECHANICAL LINE LEAK DETECTOR 

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

2.5 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 129 gallons. 

Waiting Time None between dispensing and testing. 

None between delivery and testing. 

Test Period Response time is 1 minute. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

LD2000T - restricted flow to dispenser if leak is declared. 

LD2000T-S - pump shutoff if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Vaporless Manufacturing Evaluator: Ken Wilcox Associates 

8700 East Long Mesa Drive Tel: (816) 443-2494 

Prescott Valley, AZ 86314 Date of Evaluation: 07/13/93 

Tel: (928) 775-5191 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

333

Issue Date: August 23, 1999 

Revision Date: March 11, 2004 

Vaporless Manufacturing 

Vaporless 98LD-2000, 99LD-2000, 99LD-2200, LD-2200 Scout 

(for Rigid and Flexible Pipelines) 

AUTOMATIC MECHANICAL LINE LEAK DETECTOR 

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

2.5 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized flexible, fiberglass, and steel pipelines. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 172 gallons for rigid pipelines. 

Maximum of 39.5 gallons for flexible pipelines. 

Waiting Time None between dispensing and testing. 

None between delivery and testing. 

Test Period Response time is less than 1 minute without a leak and 1 to 8 minutes with a leak. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Functionality and operability of the 99 LD-2000 and 99 LD-2200 are unchanged by 

installation of the Leak Detection Sensor (piston switch) that supports the VMI ISM4080 and ISM-4081 Integrated Shutdown Module. 

Vaporless Manufacturing Evaluator: Ken Wilcox Associates 

8700 East Long Mesa Drive Tel: (816) 443-2494 

Prescott Valley, AZ 86314 Dates of Evaluation: 05/20/98, 11/10/98 

Tel: (928) 775-5191 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

334

Issue Date: November 22, 1995 

Revision Date: March 11, 2004 

Vaporless Manufacturing 

Vaporless LD-3000, LD-3000S 

AUTOMATIC MECHANICAL LINE LEAK DETECTOR 

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized steel and fiberglass pipelines. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 320 gallons. 

Waiting Time None between dispensing and testing. 

Test Period Response time is 9 seconds. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

LD3000 - restricted flow to dispenser if leak is declared. 

LD3000S - pump shutoff if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Functionality and operability of the 99 LD-3000 are unchanged by installation of the 

Leak Detection Sensor (piston switch) that supports the VMI ISM-4080 and ISM-4081 

Integrated Shutdown Module.

Vaporless Manufacturing Evaluator: Ken Wilcox Associates 

8700 East Long Mesa Drive Tel: (816) 443-2494 

Prescott Valley, AZ 86314 Date of Evaluation: 08/20/93 

Tel: (928) 775-5191 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

335

Issue Date: July 2, 2001 

Revision Date: December 21, 2005

Varec, Inc. 

(originally listed as Coggins Systems, Inc. and later as Endress + Hauser Systems and 

Gauging)

Fuels Manager with Barton 3500 Dual-Pressure Transducer ATG

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.3% and PFA = 4.7%.

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 75,000 gallons. 

Tank must be between 50 and 95% full.

Waiting Time Minimum of 4 hours between delivery and testing. 

Minimum of 2 hours between dispensing and testing. 

There must be no delivery during waiting time.

Test Period Minimum of 24 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from the average of subsets of all data collected. 

There must be no dispensing or delivery during test.

Temperature Measurement of product temperature is not required by this system.

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.509 inch. 

Minimum detectable change in water level is 0.225 inch.

Calibration Probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

Varec, Inc. Evaluator: Ken Wilcox Associates 

5834 Peachtree Corners East Tel: (816) 443-2494 

Norcross, Ga 30092 Date of Evaluation: 03/15/00 

Tel: (770) 447-9202 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

336

Issue Date: May 5, 2009

Varec, Inc. 

Fuels Manager with Enraf 854 ATG 

(Servo Buoyancy Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 96.9% and PFA = 3.1%.

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 76,500 gallons. 

Tank must be between 50 and 95% full.

Waiting Time Minimum of 12 hours between delivery and testing. 

There must be no delivery or dispensing during waiting time.

Test Period Minimum of 24 hours. 

Test data are acquired and recorded by system's computer. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by 5 or more thermistors.

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.52 inch. 

Minimum detectable change in water level is 0.032 inch.

Calibration Probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Operates on buoyancy principle which employs a servo gauge. 

Evaluated in a 51,000 gallon horizontal underground storage tank, 13 feet diameter 

by 54 feet long. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

Varec, Inc. Evaluator: Ken Wilcox Associates 

5834 Peachtree Corners East Tel: (816) 443-2494 

Norcross, Ga 30092 Date of Evaluation: 09/30/08 

Tel: (770) 447-9202 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

337

Issue Date: August 7, 2002 

Revision Date: December 21, 2005

Varec, Inc. 

(originally listed as Coggins Systems, Inc. and later as Endress + Hauser Systems and 

Gauging)

 Fuels Manager with MTS Magnetostrictive Probe 

 AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.1% and PFA = 2.7%. 

Leak 

Threshold

0.13 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 75,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 7.3 hours between delivery and testing. 

Minimum of 2 hours between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 24 hours. 

Test data are acquired and recorded by system’s computer. 

Leak rate is calculated from the average of subsets of all data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by 5 temperature resistance detectors (RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.238 inch. 

Minimum detectable change in water level is 0.017 inch. 

Water level in tank should not exceed 2 inches. 

Calibration Probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product.

Varec, Inc. Evaluator: Ken Wilcox Associates 

5834 Peachtree Corners East Tel: (816) 443-2494 

Norcross, Ga 30092 Date of Evaluation: 04/21/99 

Tel: (770) 447-9202 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

338

Issue Date: August 9, 2001 

Revision Date: December 21, 2005

Varec, Inc. 

(originally listed as Coggins Systems, Inc. and later as Endress + Hauser Systems and 

Gauging)

Fuels Manager and Remote Terminal Unit RTU/8130 

(MTS Magnetostrictive Probe)

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 616 ft2, leak rate is 0.2 gph with PD = 96.4% and PFA = 3.6% 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 616 ft2) x 0.2 gph]. 

Example: 

For a tank with PSA = 900 ft2; leak rate = [(900 ft2 ÷ 616 ft2) x 0.2 gph] = 0.29 gph. 

Leak rate may not be scaled below 0.2 gph. 

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). For tanks with PSA of 616 ft2, leak 

threshold is 0.1 gph. For other tank sizes, leak threshold equals [(PSA in ft2 ÷ 616 ft2) x 0.1 gph].

Example: 

For a tank with PSA = 900 ft2; leak threshold = [(900 ft2 ÷ 616ft2) x 0.1 gph] = 0.1gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds the calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single field-constructed vertical tanks 50,000 gallons or greater. 

Maximum product surface area (PSA) is 924 ft2. Product must be at full operating level. 

Waiting Time Minimum of 4 hours, 26 minutes after delivery or dispensing. 

Test Period Minimum of 24 hours. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 resistance temperature detectors (RTDs). 

Product temperature change during test should not exceed 0.72 degrees F. 

Water Sensor Must be used to detect water ingress. Minimum detectable water level in the tank is 0.238 inch. 

Minimum detectable change in water level is 0.0017 inch. 

Calibration Probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

Leak Manager uses PC-based software to process probe data. 

Remote Terminal Unit (RTU/8130) contains software embedded in a CPU housed in a stand-alone 

console. 

Evaluated in a nominal 50,000 gallon vertical underground tank with product surface area (PSA) 

of 616 ft2. 

The maximum product level in the tank during test was 65% (32,500 gallons). 

Varec, Inc. Evaluator: Ken Wilcox Associates 

5834 Peachtree Corners East Tel: (816) 443-2494 

Norcross, GA 30092 Date of Evaluation: 11/24/98 

Tel: (770) 447-9202 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

339

Issue Date: August 23, 1999 

Revision Date: December 21, 2005

Varec, Inc. 

(originally listed as Coggins Systems, Inc. and later as Endress + Hauser Systems and 

Gauging)

Fuels Manager with Barton Series 3500 ATG (48 hour test) (72 hour test)

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 6,082 ft2, leak rate is 2.0 gph with PD = 97.8% and PFA = 2.2% for 48 hour test 

and PD = 98.5% and PFA = 1.5% for 72 hour test. 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 6,082 ft2) x 2.0 gph]. 

Example: 

For a tank with PSA = 10,000 ft2; leak rate = [(10,000 ft2 ÷ 6,082 ft2) x 2.0 gph] = 3.29 gph. 

Calculated minimum detectable leak rate is 1.59 gph with PD = 95% and PFA = 5% for 48 hour test 

and 1.44 gph with PD = 95% and PFA = 5% for 72 hour test. Leak rate may not be scaled below 0.2 

gph. 

Leak Threshold Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 6,082 ft2, leak threshold is 1.0 gph. For other tank sizes, leak threshold equals 

[(PSA in ft2 ÷ 6,082 ft2) x 1.0 gph]. 

Example: 

For a tank with PSA = 10,000 ft2; leak threshold = [(10,000 ft2 ÷ 6,082 ft2) x 1.0 gph] = 1.64 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds the calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single field-constructed vertical tanks 50,000 gallons or greater. 

Maximum product surface area (PSA) is 15,205 ft2. Performance not sensitive to product level. 

Waiting Time Minimum of 12 hours, 20 minutes after delivery or dispensing. 

Valve leaks and pump drain-back may mask a leak. 

Allow sufficient waiting time to minimize these effects. 

Waiting times during evaluation ranged from 7.3 to 17.2 hours. 

Test Period Minimum of 48 hours (48 hour test). Minimum of 72 hours (72 hour test). 

There must be no dispensing or delivery during test. 

Temperature Measurement not required by this system. 

Water Sensor None. 

Water leaks are measured as increase in mass inside tank. 

Calibration The differential pressure sensor must be checked regularly and, if necessary, calibrated in accordance 

with manufacturer's instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

Evaluated in a nominal 600,000 gallon, vertical underground tank with product surface area (PSA) of 

6,082 ft2. 

Varec, Inc. Evaluator: Ken Wilcox Associates 

5834 Peachtree Corners East Tel: (816) 443-2494 

Norcross, GA 30092 Date of Evaluation: 05/20/98 

Tel: (770) 447-9202 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

340

Issue Date: June 14, 2008

Varec, Inc. 

Fuels Manager with Enraf 854 ATG 

(Servo Buoyancy Probe)

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 11,786 ft2, leak rate is 3.00 gph with PD = 95.3% and PFA = 4.7% 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 11,786 ft2) x 3.00 gph]. 

Example: For a tank with PSA = 10,000 ft2; leak rate = [(10,000 ft2 ÷ 11,786 ft2) x 3.00 gph] = 

2.54 gph. 

Leak rate may not be scaled below 0.2 gph.

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 11,786 ft2, leak threshold is 1.50 gph. For other tank sizes, leak threshold 

equals [(PSA in ft2 ÷ 11,786 ft2) x 1.50 gph]. 

Example: For a tank with PSA = 10,000 ft2; leak threshold = [(10,000 ft2 ÷ 11,786 ft2) x 1.50 

gph] = 1.27 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds the calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer.

Tank Capacity Use limited to single field-constructed vertical tanks 50,000 gallons to 2,100,000 gallons. 

Maximum product surface area (PSA) is 11,786 ft2. 

Tank must be at least 44% full.

Waiting Time None. 

Testing may be initiated immediately following a delivery provided a minimum of 72 hours of 

quality data are collected and analyzed.

Test Period Minimum of 72 hours. 

There must be no dispensing or delivery during test.

Temperature Measurement not required by this system. 

System is self-compensating for product temperature changes. 

Buoyancy of float changes with product density in response to temperature changes.

Water Sensor None. 

Water ingress leaks are measured as an increase in product level inside the tank. 

Calibration Servo product level measurements must be verified annually and, if necessary, calibrated in 

accordance with manufacturer's instructions.

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

Evaluated in a nominal 2,100,000 gallon vertical underground tank with diameter of 122.5 ft., 

height of 23.4 ft., and PSA of 11,786 ft2. 

System is a volumetric measurement test method.

Varec, Inc. Evaluator: Ken Wilcox Associates 

5834 Peachtree Corners East Tel: (816) 443-2494 

Norcross, GA 30092 Date of Evaluation: 04/07/08 

Tel: (770) 447-9202 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

341

Issue Date: June 14, 2008

Varec, Inc. 

Fuels Manager with MTS M-Series ATG 

(MTS Magnetostrictive Probe)

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater)

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 11,786 ft2, leak rate is 4.50 gph with PD = 96.3% and PFA = 3.7% 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 11,786 ft2) x 4.50 gph]. 

Example: For a tank with PSA = 10,000 ft2; leak rate = [(10,000 ft2 ÷ 11,786 ft2) x 4.50 gph] = 3.80 gph. 

Leak rate may not be scaled below 0.2 gph.

Leak Threshold Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 11,786 ft2, leak threshold is 2.25 gph. For other tank sizes, leak threshold equals [(PSA 

in ft2 ÷ 11,786 ft2) x 2.25 gph]. 

Example: For a tank with PSA = 10,000 ft2; leak threshold = [(10,000 ft2 ÷ 11,786 ft2) x 2.25 gph] = 1.91 

gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds the 

calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer.

Tank Capacity Use limited to single, field-constructed, vertical-walled tanks having a capacity of 50,000 to 2,100,000 gallons. 

Maximum product surface area (PSA) is 11,786 ft2. 

Tank must be at least 44% full.

Waiting Time None. 

Testing may be initiated immediately following a delivery provided a minimum of 72 hours of quality data are 

collected and analyzed.

Test Period Minimum of 72 hours. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by resistance temperature detectors (RTDs) located at 18 inch increments 

from the bottom of the tank. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is based on the length of the probe as follows: 

<25 feet = 3.0 inches 

<40 feet = 3.8 inches 

<60 feet = 4.7 inches 

The water sensor “inactive zone” can be countered by installing the probe over the tank sump. 

Minimum detectable change in water level is 0.015 inch. 

Water ingress sensing is continuous and independent of leak detection testing. 

Calibration No scheduled maintenance or recalibration is required. 

The sensor pipe should be checked annually for build up of process material. 

Floats should move freely along the sensor pipe. If they do not, routine cleaning should be performed.

Comments Not evaluated using manifolded tank systems. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

Evaluated in a nominal 2,100,000 gallon vertical underground tank with diameter of 122.5 ft., height of 23.4 

ft., and PSA of 11,786 ft2. 

System is a volumetric measurement test method.

Varec, Inc. Evaluator: Ken Wilcox Associates 

5834 Peachtree Corners East Tel: (816) 443-2494 

Norcross, GA 30092 Date of Evaluation: 04/07/08 

Tel: (770) 447-9202 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

342

Issue Date: November 22, 1995 

Revision Date: April 28, 2005 

Veeder-Root 

(originally listed as Control Engineers)

Line Leak Detector 

Model LLP2

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol.

Leak 

Threshold

1.88 gph for leak rate of 3.0 gph 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel.

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure.

Pipeline 

Capacity

Maximum of 89 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 15 minutes between dispensing and testing for leak rate of 0.1 gph.

Test Period Response time is approximately 10 seconds for leak rate of 3.0 gph. 

Minimum of 30 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a permanently installed microprocessor. 

Calculations are automatically performed by a microprocessor.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown, indicator light and alarm activation if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Control Engineers no longer manufactures this equipment. 

The company and rights for this product were sold to Veeder-Root. 

*For product support information, contact Veeder-Root.

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 07/18/94 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

343

Issue Date: November 22, 1995 

Revision Date: April 28, 2005 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket PPM 4000, RLM 9000

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified using 

an equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak 

Threshold

2.0 gph for leak rate of 3.0 gph. 

0.1 gph for leak rate of 0.2 gph. 

0.047 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, methanol, ethanol, gasoline blends with methanol and ethanol. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 55.1 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Response time is 2 minutes for leak rate of 3.0 gph. 

Response time is 10 minutes to 3 hours for leak rate of 0.2 gph. 

Response time is 2 hours, 30 minutes to 3 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. Preset threshold. 

Single test to determine if pipeline is leaking. 

Recording and display of day, date, and time of conclusive test. 

Pump shutdown, message display, and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments PPM 4000 is a stand alone automatic electronic line leak detector. RLM 9000 is a combination of 

RLM 5000 automatic tank gauge and PPM 4000 automatic electronic line leak detector. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Dates of Evaluation: 03/07/91, 04/94 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

344

Issue Date: September 11, 1998 

Revision Date: April 28, 2005 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket PPM 4000, RLM 9000, ST 1401L, ST 1801L 

(for Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified using an equivalent 

leak rate and pressure, in accordance with an acceptable protocol. 

Leak Threshold 0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel, methanol, ethanol, gasoline blends with methanol and ethanol. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 27.6 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Response time is 9 minutes to 2 hours, 30 minutes for leak rate of 0.2 gph. 

Response time is 26 minutes to 4 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. Recording and display of day, date, and time of conclusive test. 

Pump shutdown, message display, and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments PPM 4000 is a stand alone automatic electronic line leak detector. 

RLM 9000 is a combination of RLM 5000 automatic tank gauge and PPM 4000 automatic electronic line leak 

detector. 

ST 1401L is a combination of ST 1400 automatic tank gauge and ST 1401L automatic electronic line leak 

detector. 

ST 1801L is a combination ST1800 automatic tank gauge and ST 1801L automatic electronic line leak detector. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Dates of Evaluation: 07/28/96, 01/31/97 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

345

Issue Date: September 11, 1998 

Revision Date: April 28, 2005 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket ST 1401L, ST 1801L, CPT, ProLink

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified using an equivalent 

leak rate and pressure, in accordance with an acceptable protocol. 

Leak 

Threshold

1.5 gph for leak rate of 3.0 gph. 

0.1 gph for leak rate of 0.2 gph. 

0.047 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, methanol, ethanol, gasoline blends with methanol and ethanol. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

Pipeline 

Capacity

Maximum of 172 gallons for leak rate of 3.0 gph. 

Maximum of 163 gallons for leak rates of 0.2 gph and 0.1 gph. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Response time is 2 to 4 minutes for leak rate of 3.0 gph. 

Response time is 2 minutes to 4 hours for leak rate of 0.2 gph. 

Response time is 4 minutes to 4 hours, 45 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. Recording and display of day, date, and time of conclusive test. 

Pump shutdown, message display, and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments ST 1401L is a combination of ST 1400 automatic tank gauge and the ST 1401L automatic electronic line leak 

detector. 

ST 1801L is a combination of ST 1800 automatic tank gauge and ST 1801L automatic electronic line leak 

detector. 

CPT is an electronic line leak detector component. 

ProLink is either a stand alone electronic automatic line leak detector, or a combination of and automatic tank 

gauge and an automatic electronic line leak detector. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 12/16/96, 01/31/97 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

346

Issue Date: November 22, 1995 

Revision Date: April 28, 2005 

Veeder-Root 

TLS-350, 350PC, 350R, 350RPC, 350Plus, Red Jacket ProMax Line Leak Detector, Series 8475 

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR 

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were 

certified using an equivalent leak rate and pressure, in accordance with an acceptable 

protocol.

Leak 

Threshold

1.5 gph for leak rate of 3.0 gph. 

0.1 gph for leak rate of 0.2 gph. 

0.079 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline. 

Pipeline 

Capacity

Maximum of 158 gallons. 

Waiting Time None between delivery and testing. 

Minimum between dispensing and testing depends on volume of product and 

temperature gradient which is determined by system's computer. 

Test Period Response time is 14 seconds for leak rate of 3.0 gph. 

Response time is 6 minutes for leak rate of 0.2 gph. 

Response time is 14 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown, message display and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 09/20/91 

Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates 

E-mail: dhalla@veeder.com Tel: (816) 443-2494 

URL: www.veeder.com Date of Evaluation: 04/12/93 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

347

Issue Date: November 22, 1995 

Revision Date: April 28, 2005 

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

EMC Environmental Management Console with Line Leak Detector, 

Series PA02630000501 (Same as Veeder-Root Series 8475)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified 

using an equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak 

Threshold

1.5 gph for leak rate of 3.0 gph. 

0.1 gph for leak rate of 0.2 gph. 

0.079 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals 

or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline. 

Pipeline 

Capacity

Maximum of 158 gallons. 

Waiting Time None between delivery and testing. 

Minimum between dispensing and testing depends on volume of product and temperature 

gradient which is determined by system's computer. 

Test Period Response time is 14 seconds for leak rate of 3.0 gph. 

Response time is 6 minutes for leak rate of 0.2 gph. 

Response time is 14 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown, message display, and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 09/20/91 

Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates 

E-mail: dhalla@veeder.com Tel: (816) 443-2494 

URL: www.veeder.com Date of Evaluation: 04/12/93 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

348

Issue Date: November 22, 1995 

Revision Date: April 28, 2005 

Veeder-Root 

TLS-350, 350PC, 350R, 350RPC, 350Plus, Red Jacket ProMax Line Leak Detector, Series 8475

(for Flexible Pipelines) 

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR 

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified 

using an equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak 

Threshold

1.5 gph for leak rate of 3.0 gph. 

0.1 gph for leak rate of 0.2 gph. 

0.079 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline. 

Pipeline 

Capacity

Maximum of 49.6 gallons. 

Waiting Time None between delivery and testing. 

Minimum between dispensing and testing depends on volume of product and temperature 

gradient which is determined by system's computer. 

Test Period Response time is 1 minute for leak rate of 3.0 gph. 

Response time is 45 minutes to 8 hours, 51 minutes for leak rate of 0.2 gph. 

Response time is 1 hour, 12 minutes to 12 hours, 54 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown, message display and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 08/04/93 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

349

Issue Date: November 22, 1995 

Revision Date: April 28, 2005 

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

EMC Environmental Management Console with Line Leak Detector, 

Series PA02630000501 (Same as Veeder-Root Series 8475) 

(for Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified 

using an equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak 

Threshold

1.5 gph for leak rate of 3.0 gph. 

0.1 gph for leak rate of 0.2 gph. 

0.079 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline. 

Pipeline 

Capacity

Maximum of 49.6 gallons. 

Waiting Time None between delivery and testing. 

Minimum between dispensing and testing depends on volume of product and temperature 

gradient which is determined by system's computer. 

Test Period Response time is 1 minute for leak rate of 3.0 gph. 

Response time is 45 minutes to 8 hours, 51 minutes for leak rate of 0.2 gph. 

Response time is 1 hour, 12 minutes to 12 hours, 54 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. Single test to determine if pipeline is leaking. 

Pump shutdown, message display, and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 08/04/93 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

350

Issue Date: November 22, 1995 

Revision Date: September 14, 2009 

Veeder-Root 

TLS 350, 350PC, 350R, 350RPC, 350Plus, Red Jacket ProMax Leak Detector, with Series 

8484 PPLD and TLS 450 Series 8590 DPLLD 

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR 

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified using 

an equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak Threshold 1.88 gph for leak rate of 3.0 gph. 

0.17 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline. 

Pipeline 

Capacity

Maximum of 98.4 gallons. 

Waiting Time None between delivery and testing. 

Minimum of 16 minutes between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 45 minutes to 1 hour between dispensing and testing for leak rate of 0.2 gph. 

Minimum of 2 hours, 30 minutes between dispensing and testing for leak rate of 0.1 gph. 

Test Period Response time is 28.8 seconds for leak rate of 3.0 gph. 

Response time is 32 to 48 minutes for leak rate of 0.2 gph. 

Response time is 18 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

TLS 350 console can only be used with Series 8484 PLLD. 

TLS 450 console can only be used with Series 8590 DPLLD. 

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown (optional), message display and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Dates of Evaluation: 08/07/91, 12/18/96 

Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates 

E-mail: dhalla@veeder.com Tel: (816) 443-2494 

URL: www.veeder.com Dates of Evaluation: 2/27/08, 7/28/09 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

351

Issue Date: September 11, 1998 

Revision Date: April 28, 2005 

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

EMC Environmental Management Console with Line Leak Detector, 

Series PA0263000060X (Same as Veeder-Root Series 8484)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified 

using an equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak 

Threshold

1.88 gph for leak rate of 3.0 gph. 

0.17 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals 

or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline. 

Pipeline 

Capacity

Maximum of 98.4 gallons. 

Waiting Time None between delivery and testing. 

Minimum of 16 minutes between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 45 minutes to 1 hour between dispensing and testing for leak rate of 0.2 gph. 

Minimum of 2 hours, 30 minutes between dispensing and testing for leak rate of 0.1 gph. 

Test Period Response time is 28.8 seconds for leak rate of 3.0 gph. 

Response time is 32 to 48 minutes for leak rate of 0.2 gph. 

Response time is 18 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. Preset threshold. 

Single test to determine if pipeline is leaking. Pump shutdown (optional), message display 

and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Dates of Evaluation: 08/07/91, 12/18/96 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

352

Issue Date: June 2, 1998 

Revision Date: September 14, 2009

Veeder-Root 

TLS 350, 350PC, 350R, 350RPC, 350Plus, LLD-300, Red Jacket ProMax Leak Detector, with 

Series 8484 PLLD and TLS 450 with Series 8590 DPLLD

(for Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR 

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified using an 

equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak Threshold 1.5 gph for leak rate of 3.0 gph. 

0.17 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or exceeds 

this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline. 

Pipeline 

Capacity

Maximum of 40.8 gallons. 

Waiting Time None between delivery and testing. 

Minimum of 13 minutes between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 4 minutes to 1 hour, 9 minutes between dispensing and testing for leak rate of 0.2 gph. 

Minimum of 1 to 4 hours between dispensing and testing for leak rate of 0.1 gph. 

Test Period Response time is 1 to 6 minutes for leak rate of 3.0 gph. 

Response time is 40 minutes to 1 hour for leak rate of 0.2 gph. 

Response time is 45 minutes to 1 hour, 15 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

TLS 350 console can only be used with Series 8484 PLLD. 

TLS 450 console can only be used with Series 8590 DPLLD. 

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown (optional), message display and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Dates of Evaluation: 10/16/95, 01/31/97 

Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates 

E-mail: dhalla@veeder.com Tel: (816) 443-2494 

URL: www.veeder.com Dates of Evaluation: 2/27/08, 7/28/09 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

353

Issue Date: September 11, 1998 

Revision Date: April 28, 2005 

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

EMC Environmental Management Console with Line Leak Detector, 

Series PA0263000060X (Same as Veeder-Root Series 8484) 

(for Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified using 

an equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak 

Threshold

1.5 gph for leak rate of 3.0 gph. 

0.17 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline. 

Pipeline 

Capacity

Maximum of 40.8 gallons. 

Waiting Time None between delivery and testing. 

Minimum of 13 minutes between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 4 minutes to 1 hour, 9 minutes between dispensing and testing for leak rate of 0.2 

gph. 

Minimum of 1 to 4 hours between dispensing and testing for leak rate of 0.1 gph. 

Test Period Response time is 4 to 6 minutes for leak rate of 3.0 gph. 

Response time is 40 minutes to 1 hour for leak rate of 0.2 gph. 

Response time is 45 minutes to 1 hour, 15 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown (optional), message display and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Dates of Evaluation: 10/16/95, 01/13/97 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

354

Issue Date: December 23, 2002 

Revision Date: September 14, 2009 

Veeder-Root 

TLS 350, 350PC, 350R, 350RPC, 350Plus, 350J, Red Jacket ProMax 

Line Leak Detector, with Series 8484 PLLD and TLS 450 with Series 8590 DPPLD, 

Software Version X19 or Higher 

(for Rigid and/or Flexible Pipelines) 

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified 

using an equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak Threshold 2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel 

Specification System tests pressurized rigid, flexible, and combination of rigid and flexible pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline. 

Pipeline 

Capacity

Maximum of 212 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Response time is 1 to 6 minutes. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System Features TLS 350 console can only be used with Series 8484 PLLD. 

TLS 450 console can only be used with Series 8590 DPLLD. 

Permanent installation on pipeline. 

Automatic testing of pipeline. Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown (optional), message display and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments System was evaluated on a pipeline consisting of rigid and flexible piping, and the resulting 

combined bulk modulus was determined by physical measurement at evaluator’s facility. To 

use this system, a measurement of bulk modulus must be made at the owner's facility so that 

the software can be programmed to deal with the specific characteristics of the piping system 

at the facility. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 08/19/02 

Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates 

E-mail: dhalla@veeder.com Tel: (816) 443-2494 

URL: www.veeder.com Dates of Evaluation: 2/27/2008 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

355

Issue Date: September 22, 2004 

Revision Date: September 14, 2009

Veeder-Root 

TLS 350, 350PC, 350R, 350RPC, 350Plus, 450, LLD-300, Red Jacket ProMax Leak Detector, 

with Series 8484 PLLD and TLS 450 with Series 8590 DPPLD, Software Version X19 or Higher

(for Rigid and/or Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR 

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified using an equivalent 

leak rate and pressure, in accordance with an acceptable protocol. 

Leak Threshold 1.5 gph for leak rate of 3.0 gph. 

0.17 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel 

Specification System tests pressurized rigid, flexible, and combination of rigid and flexible pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline. 

Pipeline 

Capacity

Maximum of 119.4 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 4 minutes to 1 hour, 9 minutes between dispensing and testing for leak rate of 0.2 gph. 

Minimum of 1 to 4 hours between dispensing and testing for leak rate of 0.1 gph. 

Test Period Response time is 1 to 6 minutes for leak rate of 3.0 gph. 

Response time is 40 minutes to 227 minutes for leak rate of 0.2 gph. 

Response time is 45 minutes to 333 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System Features TLS 350 console can only be used with Series 8484 PLLD. 

TLS 450 console can only be used with Series 8590 DPLLD. 

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown (optional), message display and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with manufacturer's instructions. 

System was evaluated on a pipeline consisting of rigid and flexible piping, and the resulting combined bulk 

modulus was determined by physical measurement at evaluator’s facility. To use this system, a measurement 

of bulk modulus must be made at the owner's facility so that the software can be programmed to deal with 

the specific characteristics of the piping system at the facility. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Dates of Evaluation: 10/16/95, 01/31/97 

Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates 

E-mail: dhalla@veeder.com Tel: (816) 443-2494 

URL: www.veeder.com Dates of Evaluation: 07/20/04, 2/27/08, 7/28/09 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

356

Issue Date: April 18, 1997 

Revision Date: September 14, 2009

Veeder-Root 

TLS 350, 350PC, 350R, 350 RPC, 350Plus, LLD-300, Red Jacket ProMax Line Leak Detector, 

Series 8494, Wireless Pressurized Line Leak Detector (WPLLD)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR 

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified 

using an equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak 

Threshold

2.5 gph for leak rate of 3.0 gph. 

0.17 gph for leak rate of 0.2 gph. 

0.09 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals 

or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline. 

Pipeline 

Capacity

Maximum of 100 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 45 minutes between dispensing and testing for leak rate of 0.2 gph. 

Minimum of 2 hours between dispensing and testing for leak rate of 0.1 gph. 

Test Period Response time is less than 1 minute for leak rate of 3.0 gph. 

Response time is 30 to 45 minutes for leak rate of 0.2 gph. 

Response time is 32 to 48 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Transmits leak detection test data to console through submersible pump power wiring. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown (optional), message display and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 05/08/96 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

357

Issue Date: September 11, 1998 

Revision Date: April 28, 2005 

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

EMC, EMC-PC, EMC Enhanced, EMC-PC Enhanced, 

LMS Environmental Management Consoles with Line Leak Detector, 

PA0263000100X (Same as Veeder-Root Series 8494), 

PA0277000060X (Same as Veeder-Root Series 8494) 

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph at 10 psi* with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph at operating pressure with PD = 100% and PFA = 0%. 

Leak rate of 0.1 gph at 1.5 times operating pressure* with PD = 100% and PFA = 0%. 

*Since leak rate varies as a function of pressure, this leak rate and pressure were certified using an 

equivalent leak rate and pressure, in accordance with an acceptable protocol. 

Leak Threshold 2.5 gph for leak rate of 3.0 gph. 

0.17 gph for leak rate of 0.2 gph. 

0.09 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or exceeds 

this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure. 

System will not function with a mechanical line leak detector installed in the pipeline. 

Pipeline 

Capacity

Maximum of 100 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing for leak rate of 3.0 gph. 

Minimum of 45 minutes between dispensing and testing for leak rate of 0.2 gph. 

Minimum of 2 hours between dispensing and testing for leak rate of 0.1 gph. 

Test Period Response time is less than 1 minute for leak rate of 3.0 gph. 

Response time is 30 to 45 minutes for leak rate of 0.2 gph. 

Response time is 32 to 48 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Pump shutdown (optional), message display and alarm activation if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 05/08/96 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

358

Issue Date: November 22, 1995 

Revision Date: April 15, 2002 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket DLD, XLD

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at 8-12 psi.

Pipeline 

Capacity

Maximum of 129 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is 6 seconds.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 12/21/90 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

359

Issue Date: November 22, 1995 

Revision Date: February 6, 2006 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket FX1, FX2

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at 8-12 psi.

Pipeline 

Capacity

Maximum of 316 gallons for FX1. 

Maximum of 362 gallons for FX2.

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Stabilization time up to 45 minutes may be required after dispensing when 

temperature extremes are present.

Test Period Response time is less than 5 minutes.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Dates of Evaluation: 03/14/94, 06/01/94 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

360

Issue Date: November 22, 1995 

Revision Date: February 6, 2006 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket FX1, FX2 Flexline 

(for Flexible Pipelines)

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests pressurized flexible pipelines.

Pipeline 

Capacity

Maximum of 49 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is less than 3 minutes.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Comments Enviroflex pipeline with a bulk modulus* of 1,280 psi was used during this evaluation. 

To perform a valid test, time delays must be integrated into electronic dispensing 

equipment or retrofitted in junction box. Without this delay, there is no guarantee that 

a nozzle will be closed for sufficient time to allow leak detector to perform pipeline test 

and provide uninterrupted service. 

*See glossary.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 03/22/94 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

361

Issue Date: November 22, 1995 

Revision Date: April 15, 2002 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket FX1D, FX2D, FX1DV, FX2DV Installed in the Big-Flow

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at operating pressure.

Pipeline 

Capacity

Maximum of 362 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is less than 3 minutes.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Dates of Evaluation: 03/15/94, 07/30/96, 

Tel: (860) 651-2700 03/11/99 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

362

Issue Date: July 31, 2001 

Revision Date: April 15, 2002 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket FX1DV, FX2DV Installed in the Big-Flow 

(for Flexible Pipelines)

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Diesel.

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure.

Pipeline 

Capacity

Maximum of 39.4 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is less than 3 minutes.

System 

Features

Permanent installation on pipeline. 

Automatic hourly testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Dates of Evaluation: 03/15/94, 07/30/96, 

Tel: (860) 651-2700 03/11/99 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

363

Issue Date: February 6, 2006 

Veeder-Root

Red Jacket FX1V, FX2V in Big Flow or Packer Manifold 

(for Rigid and Flexible Pipelines)

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

1.5 gph at 10 psi. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline. 

Specification System tests pressurized pipelines. 

Tests are conducted at 8-12 psi. 

Pipeline 

Capacity

Maximum of 416.7 gallons for rigid pipelines. 

Maximum of 95.4 gallons for flexible pipelines. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Stabilization time up to 45 minutes may be required after dispensing when 

temperature extremes are present. 

Test Period Response time is less than 5 minutes. 

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Dates of Evaluation: 03/14/94, 03/22/94, 06/01/94, 

Tel: (860) 651-2700 11/21/05 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

364

Issue Date: November 22, 1995 

Revision Date: April 15, 2002 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket XLP

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA =0%.

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests pressurized fiberglass and steel pipelines. 

Tests are conducted at 15-22 psi.

Pipeline 

Capacity

Maximum of 129 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is 6 seconds.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 03/22/94 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

365

Issue Date: November 22, 1995 

Revision Date: April 15, 2002 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket XLP 

(for Flexible Pipelines)

AUTOMATIC MECHANICAL LINE LEAK DETECTOR

Certification Leak rate of 3.0 gph with PD = 100% and PFA =0%.

Leak 

Threshold

2.0 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer.

Specification System tests pressurized flexible pipelines. 

Tests are conducted at operating pressure.

Pipeline 

Capacity

Maximum of 48.9 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing.

Test Period Response time is less than 3 minutes.

System 

Features

Permanent installation on pipeline. 

Automatic testing of pipeline. 

Preset threshold. 

Single test to determine if pipeline is leaking. 

Restricted flow to dispenser if leak is declared.

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 04/19/93 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

366

Issue Date: April 18, 1997 

Revision Date: April 9, 2002 

Veeder-Root 

(originally listed as Control Engineers)

CEI 3000 Tank Level Module - Version TLP2 Normal/Rapid Test Mode 

(Magnetostrictive Probe) 

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 95.0% and PFA = 0.1% for normal test mode. 

Leak rate of 0.2 gph with PD = 95.0% and PFA = 5.0% for rapid test mode. 

Leak rate of 0.1 gph with PD = 99.2% and PFA = 0.08% for normal test mode. 

Leak rate of 0.1 gph with PD = 95.0% and PFA = 5.0% for rapid test mode. 

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full for leak rate of 0.2 gph. 

Tank must be minimum 95% full for leak rate of 0.1 gph. 

Waiting Time Minimum of 6 hours, 40 minutes between delivery and testing. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 4 hours for normal test mode and 1 hour, 12 minutes for rapid test mode and for leak rate of 0.2 

gph. 

Minimum of 6 hours, 23 minutes for normal test mode and 2 hours, 40 minutes for rapid test mode and for leak 

rate of 0.1 gph. 

Test data are acquired and recorded by a microprocessor. 

Leak rate is calculated from data determined to be valid by statistical analysis. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 temperature resistance detectors (RTDs). 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.49 inch. 

Minimum detectable change in water level is 0.05 inch. 

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains product. 

Control Engineers no longer manufactures this equipment. 

The company and rights for this product were sold to Veeder-Root. 

*For product support information, contact Veeder-Root. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 05/21/92, 05/27/92 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

367

Issue Date: August 23, 1999 

Revision Date: April 15, 2002 

Veeder-Root 

(originally listed as Marley Pump Co.)

Prolink System RJE Probes # RE-400-094 thru 112-5 

(Magnetostrictive Probes)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.95% and PFA = 0.005%. 

Leak rate of 0.1 gph with PD = 95.2% and PFA = 0.5%.

Leak 

Threshold

-0.116 gph to declare a leak for leak rate of 0.2 gph. 

0.084 gph to declare a gain for leak rate of 0.2gph. 

-0.065 gph to declare a leak for leak rate of 0.1 gph. 

0.035 gph to declare a gain for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test indicates a loss or gain that 

equals or exceeds the threshold.

Applicability Gasoline, diesel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 18,000 gallons. 

Tanks less than 95% full may be tested. 

Minimum product level required is based on tank diameter as follows: 

48" dia/ min 16"; 

64" dia/ min 21"; 

72" dia/ min 24"; 

126" dia/ min 41". 

For other tank diameters, see evaluation report.

Waiting Time Minimum of 13 hours 54 minutes between delivery and testing. 

Minimum of 10 minutes between dispensing and testing. 

There must be no delivery during waiting time.

Test Period Minimum of 4 hours, 31 minutes for leak rate of 0.2 gph. 

Minimum of 6 hours, 39 minutes for leak rate of 0.1 gph. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from all the data collected during entire test period. 

There must be no dispensing or delivery during testing.

Temperature Probe contains 5 or more resistance temperature detectors (RTDs) to monitor product 

temperature. 

At least one RTD must be submerged in product during testing.

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.106 inches. 

Minimum detectable change in water level is 0.058 inches.

Calibration RTDs and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions.

DATA SHEET CONTINUED ON NEXT PAGE
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

368

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Veeder-Root, Prolink System RJE Probes # 

RE-400-094 thru 112-5 (Magnetostrictive Probes)

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing.

System has a bias of -0.016 gph for leak rate of 0.2 gph. 

System has a bias of -0.015 gph for leak rate of 0.1 gph. 

Tests only the portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank which 

routinely contains product.

Veeder-Root Evaluator: ADA Technologies, Inc. 

125 Powder Forest Dr. Tel: (303) 792-5615 

Simsbury, CT 06070-2003 Date of Evaluation: 10/29/96 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

369

Issue Date: November 22, 1995 

Revision Date: April 15, 2002 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket ATM System, Version RLM 5000, 5001, 9000 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 6 hours between delivery and testing. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 3 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from all data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 temperature sensors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.04 inches. 

Minimum detectable water level change is 0.011 inch. 

Calibration Temperature sensors and probe must be checked and, if necessary, calibrated in 

accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 04/02/91 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

370

Issue Date: November 22, 1995 

Revision Date: August 3, 2010

Veeder-Root 

(originally listed as Marley Pump Co.)

Sonic Technology (ST) 1400-1800 Series Tank Monitoring System, 

ProLink System with Ultrasonic Network Card, 

ATG Automatic Tank Gauging Monitor, LLM Series Liquid Level Monitor, FMS Fuel 

Management Monitor 

(Ultrasonic Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.9% and PFA = 2.98% for single tanks. 

Leak rate of 0.2 gph with PD = 99.9% and PFA = 2.53% for manifolded tanks. 

Leak rate of 0.1 gph with PD = 99.9% and PFA = 0.01%.

Leak 

Threshold

0.1 gph for leak rate of 0.2 gph. 

0.05 gph for leak rate of 0.1gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel, jet fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity For leak rate of 0.2 gph: 

Maximum of 73,530 gallons. 

Maximum of 73,530 gallons cumulative capacity for manifolded tank systems with no 

more than 4 tanks in the system. 

Tank must contain at least 15 inches of product. 

For leak rate of 0.1 gph: 

Maximum of 18,000 gallons. 

Tank must be minimum 95% full.

Waiting Time Minimum of 9.1 hours between delivery and testing for leak rate of 0.2 gph. 

Minimum of 12 hours between delivery and testing for leak rate of 0.1 gph. 

None between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours, 20 minutes for a leak rate of 0.2 gph. 

Minimum of 2 hours, 21 minutes for a leak rate of 0.1 gph. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from all data collected. 

There must be no dispensing or delivery during test.

Temperature Average for product is determined by five or more temperature sensors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.112 inch. 

Minimum detectable water level change is 0.011 inch.

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

371

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Sonic Technology (ST) 1400-1800 Series 

Tank Monitoring System, ProLink System with Ultrasonic Network Card, ATG Automatic Tank 

Gauging Monitor, LLM Series Liquid Level Monitor, FMS Fuel Management Monitor 

(Ultrasonic Probe) 

Calibration Temperature sensors and probe must be checked and, if necessary, calibrated in 

accordance with manufacturer's instructions.

Comments Evaluated using both single and manifolded tank systems with probes in each tank. 

The difference between the product level and groundwater level must be at least 2.75 

feet if groundwater is present above the bottom of the tank. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

System was previously known as LT1 Automatic Product Level Monitor and was 

manufactured by Level Tech, Inc. (purchased by Marley 9/91). 

Veeder-Root Evaluator: ADA Technologies 

125 Powder Forest Dr. Tel: (303) 792-5615 

Simsbury, CT 06070-2003 Dates of Evaluation: 09/25/92, 09/30/92, 2/5/1996, 

Tel: (860) 651-2700 11/21/1998 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

372

Issue Date: November 22, 1995 

Revision Date: March 28, 2002 

Veeder-Root 

TLS-200, 200i, 250i, 300, 300C, 300i, 350, 350PC, 350R, 350RPC, 350Plus, 

Red Jacket ProMax and ProPlus UST ATGS 

(Model 7842 Digital Sensing Capacitance Probe) 

AUTOMATIC TANK GAUGING METHOD 

Certification Leak rate of 0.2 gph with PD = 99% and PFA = 1%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 8 hours, 18 minutes between delivery and testing. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 5 hours. 

Test data are acquired and recorded by system’s computer. 

Leak rate is calculated from the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a temperature averaging probe. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.40 inches. 

Minimum detectable change in water level is 0.040 inch. 

Calibration Temperature averaging probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Capacitance probes do not work with oxygenated fuels.

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 05/14/93 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

373

Issue Date: November 22, 1995 

Revision Date: June 24, 2002 

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

EMC Environmental Management Console 

EMC Basic Monitoring System Tank Monitors 2, 3, 2.1, 3.1, 

PAO238000XXXX (Same as Veeder-Root Model 7842) 

(Capacitance Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99% and PFA = 1%. 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full. 

Waiting Time Minimum of 8 hours, 18 minutes between delivery and testing. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 5 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is obtained by a temperature averaging probe. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.40 inches. 

Minimum detectable change in water level is 0.040 inch. 

Calibration Temperature averaging probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable 

when there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which 

routinely contains product. 

Capacitance probes do not work with oxygenated fuels.

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 05/14/93 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

374

Issue Date: November 22, 1995 

Revision Date: March 28, 2002 

Veeder-Root 

TLS-200, 200i, 250i, 300, 300C, 300i, 300PC, 350, 350PC, 350R, 350RPC, 350Plus, 

 Red Jacket ProMax and ProPlus UST ATGS 

(Model 8472 Digital Sensing Capacitance Probe) 

AUTOMATIC TANK GAUGING METHOD 

Certification Leak rate of 0.2 gph with PD = 99% and PFA = 0.2%. 

Leak rate of 0.1 gph with PD = 99% and PFA = 0.1%. 

Leak 

Threshold

0.126 gph for leak rate of 0.2 gph. 

0.071 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full for leak rate of 0.2 gph. 

Tank must be minimum 95% full for leak rate of 0.1 gph. 

Waiting Time Minimum of 8 hours, 18 minutes between delivery and testing for leak rate of 0.2 gph. 

There must be no dispensing or delivery during waiting time for leak rate of 0.2 gph. 

Minimum of 8 hours, 15 minutes between delivery and testing for leak rate of 0.1 gph. 

Minimum of 30 minutes between dispensing and testing for leak rate of 0.1 gph. 

There must be no delivery during waiting time for leak rate of 0.1 gph. 

Test Period Minimum of 2 hours. 

Test data are acquired and recorded by system’s computer. 

Leak rate is calculated from the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 thermistors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.52 inches. 

Minimum detectable change in water level is 0.027 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is 

a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains 

product. 

Capacitance probes do not work with oxygenated fuels.

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 05/14/93 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

375

Issue Date: November 22, 1995 

Revision Date: June 24, 2002 

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

EMC Environmental Management Console 

EMC Basic Monitoring System Tank Monitors 2.1, 3.1, 

PAO264XXX0000 (Same as Veeder-Root Model 8472) 

(Capacitance Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99% and PFA = 0.2%. 

Leak rate of 0.1 gph with PD = 99% and PFA= 0.1%. 

Leak 

Threshold

0.126 gph for leak rate of 0.2 gph. 

0.071 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full for leak rate of 0.2 gph. 

Tank must be minimum 95% full for leak rate of 0.1 gph. 

Waiting Time Minimum of 8 hours, 18 minutes between delivery and testing for leak rate of 0.2 gph. 

There must be no dispensing or delivery during waiting time for leak rate of 0.2 gph. 

Minimum of 8 hours, 15 minutes between delivery and testing for leak rate of 0.1 gph. 

Minimum of 30 minutes between dispensing and testing for leak rate of 0.1 gph. 

There must be no delivery during waiting time for leak rate of 0.1 gph. 

Test Period Minimum of 2 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 thermistors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 1.52 inches. 

Minimum detectable change in water level is 0.027 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains product. 

Capacitance probes do not work with oxygenated fuels.

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 05/14/93 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

376

Issue Date: November 22, 1995 

Revision Date: March 28, 2002 

Veeder-Root 

TLS-200, 200i, 250, 250i, 300, 300C, 300i, 300PC, 350, 350PC, 350R, 350RPC, 350Plus, 

Red Jacket ProMax and ProPlus UST ATGS 

(Model 8473 Digital Sensing Magnetostrictive Probe) 

AUTOMATIC TANK GAUGING METHOD 

Certification Leak rate of 0.2 gph with PD = 99% and PFA= 0.1%. 

Leak rate of 0.1 gph with PD = 99% and PFA= 1%. 

Leak 

Threshold

0.093 gph for leak rate of 0.2 gph. 

0.071 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after consultation 

with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full for leak rate of 0.2 gph. 

Tank must be minimum 95% full for leak rate of 0.1 gph. 

Waiting Time Minimum of 8 hours, 18 minutes between delivery and testing for leak rate of 0.2 gph. 

Minimum of 8 hours, 15 minutes between delivery and testing for leak rate of 0.1 gph. 

Minimum of 30 minutes between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours for leak rate of 0.2 gph. 

Minimum of 3 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by system’s computer. 

Leak rate is calculated from the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 thermistors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.544 inch. 

Minimum detectable change in water level is 0.027 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with 

manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 05/14/93, 03/14/95 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

377

Issue Date: November 22, 1995 

Revision Date: June 24, 2002 

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

EMC Environmental Management Console 

EMC Basic Monitoring System Tank Monitors 2.1, 3.1, 

PAO265XXX0000 (Same as Veeder-Root Model 8473) 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99% and PFA = 0.1%. 

Leak rate of 0.1 gph with PD = 99% and PFA = 1%. 

Leak 

Threshold

0.093 gph for leak rate of 0.2 gph. 

0.071 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be between 50 and 95% full for leak rate of 0.2 gph. 

Tank must be minimum 95% full for leak rate of 0.1 gph. 

Waiting Time Minimum of 8 hours, 18 minutes between delivery and testing for leak rate of 0.2 gph. 

Minimum of 8 hours, 15 minutes between delivery and testing for leak rate of 0.1 gph. 

Minimum of 30 minutes between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours for leak rate of 0.2 gph. 

Minimum of 3 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 thermistors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.544 inch. 

Minimum detectable change in water level is 0.027 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is 

a probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely contains 

product. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 05/14/93, 03/14/95 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

378

Issue Date: September 11, 1998 

Revision Date: April 8, 2008 

Veeder-Root 

TLS-250, 250i, 300, 300C, 300i, 300PC, 350, 350PC, 350R, 350RPC, 350Plus, 450 

Red Jacket ProMax and ProPlus UST ATGS 

(Models 8473, 8493 Magnetostrictive Probes) 

AUTOMATIC TANK GAUGING METHOD 

Certification Leak rate of 0.2 gph with PD = 98.9% and PFA = 0.3%. 

Leak rate of 0.1 gph with PD = 95.8% and PFA = 0.9%. 

Leak 

Threshold

0.126 gph for leak rate of 0.2 gph. 

0.071 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tanks less than 95% full may be tested. Minimum product level required is based on tank diameter as follows: 

48" dia/ min 18"; 

64" dia/ min 21"; 

72" dia/ min 24"; 

96" dia/ min 30"; 

126" dia/ min 39". 

For other tank diameters, see evaluation report. 

Waiting Time Minimum of 8 hours between delivery and testing. Minimum of 30 minutes between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours for leak rate of 0.2 gph. 

Minimum of 3 hours for leak rate of 0.1 gph. 

Test data are acquired and recorded by system's computer. Leak rate is calculated from the difference between 

the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by probe which contains 5 thermistors. 

At least one thermistor must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.544 inch. 

System is programmed to report water depth only when it exceeds 0.75 inch. 

Minimum detectable change in water level is 0.027 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. EPA leak detection regulations require 

testing of the portion of the tank which routinely contains product. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-7684 Date of Evaluation: 09/04/97, 07/01/98 

Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates 

E-mail: dhalla@veeder.com Tel: (816) 443-2494 

URL: www.veeder.com Date of Evaluation: 02/29/08 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

379

Issue Date: August 23, 1999 

Revision Date: October 28, 2010 

 Veeder-Root 

TLS 300, 350, 350R, 350Plus, 450, TLS2, Red Jacket ProMax and ProPlus 

(Models 8463, 8473, 8493 Magnetostrictive Probes) 

AUTOMATIC TANK GAUGING METHOD 

Certification Leak rate of 0.2 gph with PD = 99.5% and PFA = 1.6% for 2 hour test. 

Leak rate of 0.1 gph with PD = 96.0% and PFA = 3.4% for 5 hour test. 

Leak rate of 0.1 gph with PD = 96.2% and PFA = 2.2% for 4 hour test. 

Leak rate of 0.1 gph with PD = 96.4% and PFA = 1.5% for 3 hour test. 

Leak rate of 0.1 gph with PD = 97.3% and PFA = 2.3% for 2 hour test. 

Leak 

Threshold

0.126 gph for leak rate of 0.2 gph. 

0.071 gph for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, biodiesel blends B6-B20 meeting ASTM D7647, 

biodiesel B100 meeting ASTM D6751*. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

*NWGLDE Listings apply to leak detection functionality only and not material 

compatibility – see “Disclaimer” on page ii. 

Tank Capacity Maximum of 20,000 gallons. 

Tanks less than 95% full may be tested. Minimum product level required is based on 

tank diameter as follows: 

48" dia/min 18"; 

64" dia/min 21"; 

72" dia/min 24"; 

96" dia/min 30"; 

126" dia/min 39"; 

132" dia/min 39". 

For other tank diameters, see evaluation report. 

Waiting Time Minimum of 8 hours between delivery and testing for 2 hour test and leak rate of 0.2 

gph. 

Minimum of 8 hours between delivery and testing for 5 hour test and leak rate of 0.1 

gph. 

Minimum of 9 hours between delivery and testing for 4 hour test and leak rate of 0.1 

gph. 

Minimum of 10 hours between delivery and testing for 3 hour test and leak rate of 0.1 

gph. 

Minimum of 11 hours between delivery and testing for 2 hour test and leak rate of 0.1 

gph. 

Minimum of 30 minutes between dispensing and testing. 

There must be no delivery during waiting time. 

DATA SHEET CONTINUED ON NEXT PAGE
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

380

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Veeder-Root, TLS Series 300, 350, 350R, 

350Plus, TLS2, Red Jacket ProMax and ProPlus (Models 8463, 8473, 8493 Magnetostrictive 

Probes)

Test Period Minimum of 2 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by probe which contains 5 thermistors. 

At least two thermistors must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.66 inch for model 8463 and 8493 

probe. 

Minimum detectable water level in the tank is 0.75 inch for model 8473 probe. 

Minimum detectable water level in the tank is 0.38 inch when using TLS 350 with 

model 8463 probe with 88610x-0x0 water float and software version 30B or higher, or 

TLS 450 with software version 3A or higher. 

Minimum detectable change in water level is 0.005 inch for leak rate of 0.2 gph. 

Minimum detectable change in water level is 0.027 inch for leak rate of 0.1 gph. 

Minimum detectable change in water level in tank is 0.01 inch when using TLS 350 

with model 8463 probe with 88610x-0x0 water float and software version 30B or 

higher, or TLS 450 with software version 3A or higher. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank which 

routinely contains product. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-7684 Dates of Evaluations: 06/29/98 (Rev. 04/17/02), 02/29/08 

Tel: (860) 651-2700 08/31/10 (water sensor) 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

381

Issue Date: August 23, 1999 

Revision Date: June 24, 2002

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

EMC/PC Series Monitoring Systems PA0265 (Same as Veeder-Root Model 8473), 

PA0300 (Same as Veeder-Root Model 8473) 

(Magnetostrictive Probe)

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 99.5% and PFA = 1.6%. 

Leak 

Threshold

0.126 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this 

threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after consultation with the 

manufacturer. 

Tank Capacity Maximum of 20,000 gallons. 

Tanks less than 95% full may be tested. 

Minimum product level required is based on tank diameter as follows: 

48" dia/min 18"; 64" dia/min 21"; 

72" dia/min 24"; 96" dia/min 30"; 

126" dia/min 39"; 132" dia/min 39". 

For other tank diameters see evaluation report. 

Waiting Time Minimum of 8 hours between delivery and testing. 

Minimum of 30 minutes between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by probe which contains 5 thermistors. 

At least two thermistors must be submerged in product during test. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.66 inch. 

System is programmed to report water depth only when it exceeds 0.75 inch. 

Minimum detectable change in water level is 0.005 inch. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a 

probe used in each tank and the siphon is broken during testing. 

Tests only portion of tank containing product. As product level is lowered, leak rate in a leaking tank decreases 

(due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank which routinely contains product. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 06/29/98 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

382

Issue Date: August 23, 1999 

Revision Date: October 28, 2010 

Veeder-Root 

TLS 300, 350, 350R, 350Plus, 450, TLS2, Red Jacket ProMax and ProPlus 

(Models 8463, 8473, 8493 Magnetostrictive Probes) 

AUTOMATIC TANK GAUGING METHOD 

Certification Leak rate of 0.2 gph with PD = 95.6% and PFA = 0.3%. 

Leak 

Threshold

0.126 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, biodiesel blends B6-B20 meeting ASTM D7647, 

biodiesel B100 meeting ASTM D6751*. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

*NWGLDE Listings apply to leak detection functionality only and not material 

compatibility – see “Disclaimer” on page ii. 

Tank Capacity Maximum of 30,000 gallons. 

Tanks less than 95% full may be tested. 

Minimum product level required is based on tank diameter as follows: 

48" dia/min 18"; 

64" dia/min 21"; 

72" dia/min 24"; 

96" dia/min 30"; 

126" dia/min 39"; 

132" dia/min 39". 

For other tank diameters, see evaluation report. 

Waiting Time Minimum of 8 hours between delivery and testing. 

Minimum of 30 minutes between dispensing and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 2 hours. 

Test data are acquired and recorded by system's computer. 

Leak rate is calculated from the difference between the first and last data collected. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by probe which contains 5 thermistors. 

At least two thermistors must be submerged in product during test. 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

383

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Veeder-Root, TLS Series 300, 350, 350R, 

350Plus, TLS2, Red Jacket ProMax and ProPlus (Models 8463, 8473, 8493 Magnetostrictive 

Probes) 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.66 inch for model 8463 and 8493 

probe. 

Minimum detectable water level in the tank is 0.75 inch for model 8473 probe. 

Minimum detectable water level in the tank is 0.38 inch when using TLS 350 with 

model 8463 probe with 88610x-0x0 water float and software version 30B or higher, or 

TLS 450 with software version 3A or higher. 

Minimum detectable change in water level is 0.005 inch. 

Minimum detectable change in water level in tank is 0.01 inch when using TLS 350 

with model 8463 probe with 88610x-0x0 water float and software version 30B or 

higher, or TLS 450 with software version 3A or higher. 

Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance 

with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only 

applicable when there is a probe used in each tank and the siphon is broken during 

testing. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head 

pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank which 

routinely contains product. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-7684 Dates of Evaluations: 08/14/98 (Rev. 04/17/02), 02/29/08 

Tel: (860) 651-2700 08/31/10 (water sensor) 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

384

Issue Date: April 18, 1997 

Revision Date: October 29, 2010 

Veeder-Root 

TLS-300i, 300J, 350, 350R, 350Plus, 450, Red Jacket ProMax and ProPlus 

Monitoring Systems with CSLD 

(Models 8463, 8473, 8493 Magnetostrictive Probes) 

CONTINUOUS IN-TANK LEAK DETECTION METHOD 

(CONTINUOUS AUTOMATIC TANK GAUGING)

Certification Leak rate of 0.2 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

0.16 gph for single tanks at 99% operating mode. 

0.15 gph for manifolded tank systems at 99% operating mode. 

A tank system should not be declared tight and a message printed for the operator, if 

the test results indicate a loss or gain that exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, biodiesel blends B6-B20 meeting ASTM D7647, biodiesel 

B100 meeting ASTM D6751*. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

*NWGLDE Listings apply to leak detection functionality only and not material 

compatibility – see “Disclaimer” on page ii. 

Tank 

Capacity

Maximum of 38,170 gallons for single tanks and for all tanks manifolded together. 

Contact manufacturer for tank system applications if total tank capacity exceeds 30,000 

gallons. 

Throughput Monthly maximum of 221,890 gallons. 

Waiting Time Minimum of 3 hours stabilization time is allowed between delivery and data collection. 

Test Period Data collection time ranges from 5 to 28 days. 

Data sampling frequency is every 1 to 4 seconds. 

System collects data at naturally occurring product levels without interfering with 

normal tank operation, and discards data from unstable periods when system performs 

test. 

Temperature Average for product is determined by a minimum of 5 thermistors. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.54 inch for model 8463 and 8493 

probe. 

Minimum detectable water level in the tank is 0.75 inch for model 8473 probe. 

Minimum detectable water level in the tank is 0.38 inch when using TLS 350 with 

model 8463 probe with 88610x-0x0 water float and software version 30B or higher, or 

TLS 450 with software version 3A or higher. 

Minimum detectable change in water level is 0.027 inch. 

Minimum detectable change in water level in tank is 0.01 inch when using TLS 350 with 

model 8463 probe with 88610x-0x0 water float and software version 30B or higher, or 

TLS 450 with software version 3A or higher. 

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

385

DATA SHEET CONTINUED FROM PREVIOUS PAGE: TLS-300i, 300J, 350, 350R, 350Plus, 

Red Jacket ProMax and ProPlus Monitoring Systems with CSLD 

(Models 8463, 8473, 8493 Magnetostrictive Probes)

Calibration Thermistors and probe must be checked annually and, if necessary, calibrated in 

accordance with manufacturer's instructions. 

System set-up menu must be checked to verify that the 99% operating mode option 

has been selected. 

Comments During installation, the set-up menu provides a choice between a 99% or a 95% 

operating mode. 

This evaluation covers only the 99% operating mode. 

At this time, there is no evaluation covering the 95% mode. 

System reports a result of "pass" or "fail." 

Evaluated using both single and manifolded tank systems with probes in each tank. 

System distinguishes large leak rates (> 1gph) from dispensing activities and reports 

those as "fail" or as “no idle.” 

For valid monthly testing, a conclusive test report must be produced for each tank 

every month. 

System warns operator if there are no “ passing” tests completed during the month. 

For very active tanks, a tank shut down may become necessary in order for the 

system to collect enough quiet-time data for a test. 

Constant and variable leaks were mathematically induced into tight tank test records 

which were collected by systems installed at various active tank sites. 

The database for evaluation of the system included sites with vapor recovery and 

blending dispensers. 

Tanks used in this evaluation contained gasoline and diesel. 

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 06/10/96, 4/02/02 

Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates 

E-mail: dhalla@veeder.com Tel: (816) 443-2494 

URL: www.veeder.com Date of Evaluation: 10/26/07, 08/31/10 (water sensor) 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

386

Issue Date: November 14, 1997 

Revision Date: June 8, 2005 

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

EMC, EMC Basic, EMC Enhanced with CSLD, 

PAO265XXXX100 (Same as Veeder-Root Model 8473), 

PA0300XXXX100 (Same as Veeder-Root Model 8473) 

(Magnetostrictive Probe)

CONTINUOUS IN-TANK LEAK DETECTION METHOD 

(CONTINUOUS AUTOMATIC TANK GAUGING)

Certification Leak rate of 0.2 gph with PD = 100% and PFA = 0%.

Leak 

Threshold

0.16 gph for single tanks at 99% operating mode. 

0.15 gph for manifolded tank systems at 99% operating mode. 

A tank system should not be declared tight, and a message is printed for the 

operator, if the test results indicate a loss or gain that exceeds this threshold.

Applicability Gasoline, diesel, aviation fuel. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer.

Tank Capacity Maximum of 38,170 gallons for single tanks and for all tanks manifolded together. 

Contact manufacturer for tank system applications if total tank capacity exceeds 

30,000 gallons.

Throughput Monthly maximum of 221,890 gallons.

Waiting Time Minimum of 3 hours stabilization time is allowed between delivery and data collection.

Test Period Data collection time ranges from 5 to 28 days. 

Data sampling frequency is every 1 to 4 seconds. 

System collects data at naturally occurring product levels without interfering with 

normal tank operation, and discards data from unstable periods when system 

performs test.

Temperature Average for product is determined by a minimum of 5 thermistors.

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.54 inch. 

Minimum detectable change in water level is 0.027 inch.

Calibration Thermistors and probe must be checked annually and, if necessary, calibrated in 

accordance with manufacturer's instructions. 

System set-up menu must be checked to verify that the 99% operating mode option 

has been selected.

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

387

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Veeder-Root, EMC, EMC Basic, EMC 

Enhanced with CSLD, PAO265XXXX100 (Same as Veeder-Root Model 8473), 

PA0300XXXX100 (Same as Veeder-Root Model 8473) (Magnetostrictive Probe)

Comments During installation, the set-up menu provides a choice between a 99% or a 95% 

operating mode. 

This evaluation covers only the 99% operating mode. 

At this time, there is no evaluation covering the 95% mode. 

System reports a result of "pass" or "fail." 

Evaluated using both single and manifolded tank systems with probes in each tank. 

System distinguishes large leak rates (> 1gph) from dispensing activities and reports 

those as "fail" or as "no idle." 

For valid monthly testing, a conclusive test report must be produced for each tank 

every month. 

System warns the operator if there are no " passing" tests completed during the 

month. 

For very active tanks, a tank shut down may become necessary in order for the 

system to collect enough quiet-time data for a test. 

Constant and variable leaks were mathematically induced into tight tank test records 

which were collected by systems installed at various active tank sites. 

The data base for evaluation of the system included sites with vapor recovery and 

blending dispensers. 

Tanks used in this evaluation contained gasoline and diesel.

Veeder-Root Evaluator: Midwest Research Institute 

125 Powder Forest Dr. Tel: (816) 753-7600 

Simsbury, CT 06070-2003 Date of Evaluation: 06/10/96, 4/02/02 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

388

Issue Date: September 1, 2004 

Revision Date: February 16, 2005 

Veeder-Root

Secondary Containment Leak Detection (SCLD) 

TLS-350/ProMax/EMC Console with Vacuum Sensors 857280-100, 200, 30x, or Assembly 

332175-001 

CONTINUOUS INTERSTITIAL TANK SYSTEM MONITORING METHOD (PRESSURE/VACUUM)

Certification: 

Certified as equivalent to European leak detection standard EN-13160-2, Part 2, as a Class I leak detection 

system. 

Operating Principle:

System uses vacuum generated by the turbine pump to continuously maintain a partial vacuum within the 

interstitial space of double-walled tanks and double-walled piping. 

System is designed to activate a visual and acoustic alarm, and optional turbine pump shutdown before stored 

product can escape to the environment. 

System is capable of detecting breaches in both the inner and outer walls of double-walled tanks and doublewalled piping. 

Alarm Condition: 

System alarms when a liquid or air leak occurs which causes the interstitial vacuum to decrease (pressure to 

increase) and the system is unable to maintain minimum vacuum. System will also alarm if liquid is detected in 

the interstitial space, or if the vacuum level in the interstitial space decreases at a rate exceeding 85±15 

liters/hour. 

Applicability:

Underground double-walled tank, connected double-walled piping, and other connected interstitial spaces 

storing gasoline, gasohol, diesel, heating oil #2, kerosene, aviation fuel, motor oil, water. 

Manufacturer’s Specifications: 

Alarm will activate when interstitial vacuum decreases to 1.7 psi vacuum (3.5”Hg). 

Default maximum vacuum level (pump-off pressure) is 8 psi vacuum (16.3” Hg), but can be set as low as 

4 psi (8.2” Hg) if the monitored system requires that a lower level of vacuum be maintained. 

The interstitial space shall be rated for the operating vacuum of the leak detector, regardless of temperature 

and groundwater level fluctuations. 

Volume of monitored interstitial space must not exceed 8 m3

 for tanks and 10 m3 for piping. 

When monitoring double-walled tanks, a liquid sensor must be located at lowest point of interstitial space.

Calibration: 

Functional and operational safety tests should be performed in accordance with manufacturer’s instructions. 

Comments:

Interstitial space is tested continuously. 

System is connected to the interstitial space by a single vacuum line. 

Vacuum is generated by the turbine pump, and is measured and controlled by a vacuum sensor. 

This system may not be compatible with all secondarily contained tanks and/or piping. Always consult with the tank 

and/or piping manufacturer and the manufacturer’s applicable recommended installation practices before installing 

this system, or damage may be caused to the tank or piping by its use. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 06/09/2004 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

389

Issue Date: November 14, 1997 

Revision Date: April 15, 2002 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket Electronics RE400-058-5, RE400-059-5, RE400-147-5, RE400-148-5 Overfill 

Sensor, RE400-111-5 Sump Sensor, RE400-203-5 Optical Liquid Discrimination Sensor, 

RE400-204-5 Dispenser Pan Monitor, RE400-180-5 Liquid Refraction Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle float switch (RE400-058-5, RE400-059-5, RE400-147-5, RE400-148-5 Overfill Sensor, RE400-

111-5 Sump Sensor), electrical conductivity and optical (RE400-203-5 Optical Liquid 

Discrimination Sensor), conductive polymer (RE400-204-5 Dispenser Pan Monitor), optical 

(RE400-180-5 Liquid Refraction Sensor) 

Test Results:

RE400-058-5, RE400-059-5, RE400-147-5, 

RE400-148-5 Overfill Sensor unleaded gasoline diesel water

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (cm) 2.97 2.82 2.57 

RE400-111-5 Sump Sensor 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (cm) 3.60 3.41 3.20 

RE400-203-5 

Optical Liquid Discrimination Sensor 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (cm) 1.17 1.12 1.10 

RE400-204-5 Dispenser Pan Monitor 

Detection time (hr:min:sec) <00:30:00 <02:00:00 <00:00:01 

Fall time (hr:min:sec) <01:20:00 1-2 days <00:00:01 

Lower detection limit (cm) 0.44 0.44 1.08 

RE400-180-5 Liquid Refraction Sensor 

Detection time (sec) <1 <1 <1 

Fall time (sec) <1 <1 <1 

Lower detection limit (cm) 1.17 1.12 1.10 

 

Specificity Results (in addition to above):

Activated: synthetic gasoline, n-hexane, jet-A fuel, toluene, xylene(s). 

Comments:

Evaluator claims sensors will respond to any liquid once threshold has been exceeded. 

After exposure to diesel, RE400-204-5 Dispenser Pan Monitor reading may not return to pre-contaminated level. 

Sensors are reusable. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 06/01/95 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

390

Issue Date: November 22, 1995 

Revision Date: April 15, 2002 

Veeder-Root 

(originally listed as Marley Pump Co.)

Red Jacket Electronics RE400-179-5 to RE400-199-5 Combination High Level/Low Level 

Sensor, RE400-042-5 Hydrostatic Sensor, Red Jacket PPM 4000 with Optical Liquid 

Discrimination Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch (RE400-179-5 to RE400-199-5 Combination High Level/Low level sensor, 

RE400-042-5 Hydrostatic Sensor), optical sensor (Red Jacket PPM 4000 with Optical 

Liquid Discrimination Sensor) 

Test Results:

RE400-179-5 to RE400-199-5 

Combination High Level/Low unleaded gasoline diesel water

Level Sensor high low high low high low

Detection time (sec) <1 <1 <1 <1 <1 <1 

Fall time (sec) <1 <1 <1 <1 <1 <1 

Lower detection limit (cm) N/D* 3.80 N/D 4.26 N/D 3.53 

RE400-042-5 Hydrostatic 

Sensor 

Detection time (sec) <1 <1 <1 <1 <1 <1 

Fall time (sec) <1 <1 <1 <1 <1 <1 

Lower detection limit (cm) 30.42 4.93 30.22 4.61 29.93 4.19 

Red Jacket PPM 4000 

with Optical Liquid 

Discrimination Sensor 

unleaded 

gasoline

synthetic 

fuel diesel

heating 

oil #2 water

Response time (min) 2.19 2.20 1.93 2.23 2.81 

Recovery time (min) < 1 < 1 < 1 < 1 < 1 

Product activation height (cm) 1.08 1.10 1.03 1.07 1.20 

Lower detection limit (cm) 0.30 N/D N/D N/D N/D 

 

 *See glossary. 

Specificity:

Evaluator claims RE400-179-5 to RE400-199-5 Combination High Level/Low Level Sensor and RE400-042-5 

Hydrostatic Sensor will respond to any liquid once threshold has been exceeded. 

Comments:

RE400-179-5 to RE400-199-5 Combination High Level/Low Level Sensor model numbers and high level 

detection limit vary with length of sensor. 

PPM 4000 with Optical Liquid Discrimination Sensor evaluation lists all PPM, RLM, and ST models, including 

the Multiplexer Unit. However, evaluation procedures were performed using model PPM 4000. 

Sensors are reusable. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Dates of Evaluation: 06/01/95, 04/28/92 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

391

Issue Date: June 5, 1998 

Revision Date: November 9, 1998

Veeder-Root

Dispenser Pan Sensor 847990-001 and Differentiating Dispenser Pan Sensor 847990-002 

with Dispenser Control Interface

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: product permeable, reed switch/float 

Test Results:

polymer strip float switch

Dispenser Pan Sensor 847990-001 unleaded gasoline diesel water

Detection time (sec) <1 <1 <1 

Minimum product level (in) 1.71 1.66 1.62 

Precision (in) 0.006 0.004 0.008 

Differentiating Dispenser Pan 

Sensor 847990-002 

Minimum product thickness (in) 0.06 0.06 N/A* 

Minimum product level (in) 0.03 0.06 6.39 

Precision (in) N/A** N/A** 0.008 

Detection time (min:sec) 06:30 19:50 <00:01 

*See glossary. 

**Tested at discrete levels only. 

Specificity Results (in addition to above):

Activated: synthetic gasoline, n-hexane, toluene, xylene(s) 

Not activated: water (polymer strip only) 

Comments:

Sensors are reusable. 

These sensors do not require a console. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Dates of Evaluation: 11/15/93, 11/02/98 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

392

Issue Date: November 22, 1995 

Revision Date: November 9, 2010 

Veeder-Root

ILS-250, 350, TLS-250i, 250i Plus, 300, 300C, 300i, 300PC, TLS-350 Series, TLS-450 Series, 

Red Jacket ProMax and ProPlus with 

Interstitial Liquid Sensor for Fiberglass Tanks 794390-401, 404, 407, 409, 

Interstitial Liquid Sensor for Steel Tanks 794390-420, 460, 

Liquid Sensor for Sumps 794390-206

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch 

Test Results:

Interstitial Liquid Sensor for Fiberglass 

Tanks 794390-401, 404, 407, 409 unleaded gasoline* synthetic gasoline** Used Oil**

Response time (min) 3.66 3.45 N/D  

Recovery time (min) <1 <1 N/D** ** 

Product activation height (cm) 1.28 1.27 N/D  

Lower detection limit (cm) 1.84 1.65 N/D** ** 

Interstitial Liquid Sensor for Steel Tanks 

794390-420, 460 

Response time (min) 6.00 6.51 <1 

Recovery time (min) <1 <1 <1 

Product activation height (cm) 3.67 3.62 N/D  

Lower detection limit (cm) 4.05 4.17 2.65 

Liquid Sensor for Sumps 794390-206** * 

Response time (min) 8.19 8.49 N/D**** 

Recovery time (min) <1 <1 N/D  

Product activation height (cm) 4.12 3.95 N/D** ** 

Lower detection limit (cm) 4.67 4.36 N/D**** 

* ILS-250, TLS-250i, 250i Plus 

** ILS-350, TLS-350 Series 

***Liquid Sensor for Sumps 794390-206 is no longer manufactured and is not supported by the TLS-450 

series console. It was replaced by sensor models 794380-208, 209 which are included on the NWGLDE list. 

**** See glossary. 

Specificity Results (in addition to above):

Activated: diesel, heating oil #2, water. 

Comments:

Comparison of TLS-450 Series console with TLS-350 series console showed comparable results when 

evaluated with representative sensors in water and diesel fuel. 

Sensors are reusable. 

Veeder-Root Evaluator: Carnegie Mellon Research Institute 

125 Powder Forest Dr. Tel: (412) 268-3495 

Simsbury, CT 06070-2003 Dates of Evaluation: 07/17/92, 04/22/98 

Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates 

E-mail: dhalla@veeder.com Tel: (816) 443-2494 

URL: www.veeder.com Dates of Evaluations: 03/03/2008, 08/05/10 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

393

Issue Date: November 22, 1995 

Revision Date: January 4, 2011 

Veeder-Root

ILS-350, TLS-300C, 300i, 300PC, 350, 350PC, 350R, 350RPC, TLS-450 Series, Red Jacket 

ProMax and ProPlus with Solid-State Pan/Sump Sensor 794380-321, 351, 

Piping Sump Sensor 794380-208, 209, Micro Sensor 794380-340

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: product permeable, ultrasonic/float switch 

Test Results:

Solid-State Pan/Sump Sensor 794380-321, 351 unleaded gasoline diesel water

Minimum product thickness (cm) 2.60 2.50 2.60 

Precision (cm) 0.010 0.010 0.010 

Detection time (sec) <1 <1 <1 

Piping Sump Sensor 794380-208*, 209 

Minimum product level (cm) 3.51 3.40 3.03 

Precision (cm) 0.011 0.011 0.011 

Detection time (sec) <1 <1 <1 

Micro Sensor 794380-340**

Minimum product thickness (cm) 0.51 0.46 0.48 

Precision (cm) 0.011 0.007 0.007 

Detection time (sec) <1 <1 <1 

*This sensor is identified as an interstitial sensor, but will function properly in other containment areas 

such as containment sumps, contained risers and other contained enclosures. This sensor must be 

installed at the lowest point of the containment enclosure to insure early detection of liquids.

**Micro Sensor 794380-340 is not supported by TLS 450 series console. 

Comments:

Sensors are reusable. 

208 and 209 sensors are also compatible with 300 series. 

Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with 

representative sensors. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Dates of Evaluation: 10/20/94, 05/22/02, 3/3/08 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

394

Issue Date: September 28, 2004 

Revision Date: December 3, 2010 

Veeder-Root

ILS-350, TLS-300 Series, TLS-450 Series, EMC, EMC-Series, and Red Jacket ProMax, Red 

Jacket ProPlus with Single-Point Mini Hydrostatic Sensor 794380-304

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative

Sampling frequency: continuous 

Operating principle: float switch 

Test Results:

Single-Point Mini Hydrostatic Sensor 

794380-304 30% by Weight CaCl2 50% by Volume Propylene Glycol

Detection time (sec) <15 <60 

Fall time (sec) <15 <60 

Minimum product level (in) 0.793 0.669 

Comments: 

Manufacturer states that Sensor 794380-304 is installed near the bottom of a brine reservoir. An alarm 

is triggered if the brine level falls below the threshold level of the sensor. 

Manufacturer also states that the sensor withstands removal and replacement from the reservoir 

without damage to the sensor.

The testing conducted for this evaluation determined the sensor’s response to brine and propylene 

glycol. 

The evaluator states that other liquids would also produce an alarm if the sensor threshold is exceeded. 

These thresholds would be slightly different for different liquids due to the differing densities. These 

liquids, and the threshold for each, have not been determined at this time.

Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with 

representative sensors.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 05/18/04, 03/3/08, 08/04/10 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

395

Issue Date: July 8, 2003 

Revision Date: January 4, 2011 

Veeder-Root

ILS-350, TLS-300 Series, TLS 350 Series, TLS-450 Series, EMC Series, EMC Basic, Red 

Jacket ProMax and ProPlus with Position Sensitive Sensor 794380-323

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative, non-discriminating 

Sampling frequency: continuous 

Operating principle: float switch 

Test Results:

Position Sensitive Sensor 

794380-323 unleaded gasoline diesel water E85

Detection time (min) <1 <1 <1 <1 

Fall time (min) <1 <1 <1 <1 

Product activation height (in) 1.520 1.449 1.359 1.479 

Specificity Results: 

Evaluator reports this sensor will respond to any liquid once sensor’s threshold level has been 

exceeded. This testing included water, diesel fuel, gasoline, and E85. 

Manufacturer’s Specifications: 

Sensor is reusable. 

Comments: 

Sensor will alarm if it is raised from the bottom of the containment vessel. 

Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with 

representative sensors. 

This sensor is identified as an interstitial sensor, but will function properly in other containment areas 

such as containment sumps, contained risers and other contained enclosures. This sensor must be 

installed at the lowest point of the containment enclosure to insure early detection of liquids.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 04/08/03, 02/02/06, 3/3/08 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

396

Issue Date: July 26, 2005 

Revision Date: January 4, 2011 

Veeder-Root

TLS-300 Series, TLS-350 Series, TLS-450 Series, EMC Series, EMC Basic, Red Jacket ProMax 

and ProPlus with Float Sensor 794380-430

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative

Sampling frequency: continuous 

Operating principle: float switch 

Test Results:

Float Sensor 794380-430 unleaded gasoline diesel water E85

Product activation height (in) 0.95 0.90 0.89 0.90 

Response time (min) <1 <1 <1 <1 

Recovery time (min) <1 <1 <1 <1 

Comments: 

Evaluator reports that alarms may be indicated by an audible alarm, a displayed message on the TLS350R or TLS-350 console, and a printed message if the console is equipped with a printer. 

The alarms are also recorded as part of the TLS-350R or TLS-350 Alarm History Report. 

Evaluator reports sensors can easily be removed, cleaned, and reinstalled after an alarm is triggered or 

for periodic testing. 

Sensors are reusable.

Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with 

representative sensors. 

This sensor is identified as an interstitial sensor, but will function properly in other containment areas 

such as containment sumps, contained risers and other contained enclosures. This sensor must be 

installed at the lowest point of the containment enclosure to insure early detection of liquids. 

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 06/13/05, 05/09/06, 3/3/08 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

397

Issue Date: November 22, 1995 

Revision Date: August 23, 2010 

Veeder-Root

TLS-300 Series, TLS-350 Series, TLS-450 Series, EMC Series, EMC Basic, Red Jacket ProMax 

and ProPlus with 

Single Stage Hydrostatic Sensor 794380-301, 

Dual Stage Hydrostatic Sensors 794380-302, 303

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch 

Test Results: 

Single Stage Hydrostatic 

Sensor 794380-301 

30% by weight 

calcium chloride in water

50% by weight 

propylene glycol in 

water

*50% by weight 

ethylene glycol in wate

Product activation height (in) 1.74 1.94 1.5 

Response time (min) <1 <1 35.75 

Recovery time (min) <1 <1 <1 

Dual Stage Hydrostatic water

Sensor 794380-302** high*** low***

Product activation height (in) 12.25 1.62 

Response time (min) <1 <1 

Recovery time (min) <1 <1 

30% by weight 

calcium chloride in water

50% by weight 

Dual Stage Hydrostatic ethylene glycol in water

Sensor 794380-303 high*** low*** high*** low***

Product activation height (in) 13.13 1.2 13.15 1.48 

Response time (min) <1 <1 <1 <1 

Recovery time (min) <1 <1 <1 <1 

*Evaluation performed by Carnegie Mellon Institute. 

** Dual Stage Hydrostatic Sensor 794380-302 was replaced by Sensor 794380-303 and is not 

supported 

by TLS-450 series console. 

***The "high" and "low" refer to high and low level alarm points of dual stage hydrostatic sensors. 

 

Comments: 

EMC Series and EMC Basic controllers have been evaluated only for use with sensors 794380-301 and 

794380-303. 

Evaluator reports that sensors will respond to any liquid after their thresholds are exceeded. 

Response times measured from trigger point, except for sensor 794380-301 with 50% by weight 

ethylene glycol in water, where response time also included time for liquid level to rise from bottom of 

a test cylinder to trigger point. 

Evaluator reports sensors can easily be removed, cleaned, and reinstalled after an alarm was triggered 

or for periodic testing. 

Sensors are reusable. 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

398

Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with 

representative sensors.

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

399

DATA SHEET CONTINUED FROM PREVIOUS PAGE: TLS-300 Series, TLS-350 Series, TLS-450 

Series, EMC Series, EMC Basic, Red Jacket ProMax and ProPlus with Single Stage Hydrostatic 

Sensor 794380-301, Dual Stage Hydrostatic Sensors 794380-302, 303

Single Stage Hydrostatic Sensor 794380-301: 

Intended to monitor level of either propylene glycol, ethylene glycol, or calcium chloride solutions in 

interstitial or annular space of a double-walled tank. 

If the brine level in the reservoir drops below the threshold of the sensor, an alarm condition is 

generated. 

The evaluation using 30% by weight calcium chloride in water was reevaluated using a different 

acceptable test protocol. 

Dual Stage Hydrostatic Sensor 794380-302: 

Alarm is activated if any significant gain or loss of solution occurs. 

Dual stage hydrostatic sensor 794380-303 has replaced this sensor and is fully interchangeable with 

this sensor. 

Vendor will discontinue production of this sensor as of December 31, 2003. 

Dual Stage Hydrostatic Sensor 794380-303:

If brine level or propylene glycol level in reservoir drops below the threshold of low-level sensor or if 

any liquid rises above the threshold of high level sensor, an alarm condition is generated. 

Alarms are indicated by an audible alarm, displayed message on the console, printed message (if the 

console is equipped with a printer), and recorded as part of the console “Alarm History Report.” 

Veeder-Root Evaluator: Carnegie Mellon Research Institute 

125 Powder Forest Dr. Tel: (412) 268-3495 

Simsbury, CT 06070-2003 Dates of Evaluation: 12/07/92, 03/16/98 

Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates 

E-mail: dhalla@veeder.com Tel: (816) 443-2494 

URL: www.veeder.com Dates of Evaluation: 07/08/02, 02/03/03, 3/3/08, 02/05/10 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

400

Issue Date: August 28, 1998 

Revision Date: June 20, 2008 

Veeder-Root

TLS-300, 300i, TLS-350 Series, TLS-450 Series, Red Jacket ProMax and ProPlus with 

Discriminating Dispenser Pan Sensor 794380-322, 

Discriminating Containment Sump Sensor 794380-352

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector:

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: product permeable, reed switch/float 

Test Results:

polymer strip float switch

Discriminating Dispenser Pan unleaded gasoline diesel water

Sensor 794380-322 high* low*

Response time (sec) ~10 min 2-12 hrs <1 <1 

Recovery time (sec) N/A** N/A <1 <1 

Lower detection limit - height (in) N/D** N/D 7.66 1.37 

Lower detection limit - thickness (in) 0.005 0.005 N/A N/A 

Discriminating Containment Sump 

Sensor 794380-352 

Response time (sec) ~10 min 2-12 hrs <1 <1 

Recovery time (sec) N/A N/A <1 <1 

Lower detection limit - height (in) N/D N/D 12.28 1.35 

Lower detection limit - thickness (in) 0.005 0.005 N/A N/A 

*The "high" and "low" refer to high and low level alarm points of float switch sensors. 

** See glossary. 

Specificity Results (in addition to above):

Activated: synthetic gasoline, jet-A fuel, n-hexane, toluene, xylene(s) 

Not activated: water (polymer strip only) 

Comments:

Polymer strip must be air dried after exposure to unleaded fuel. Polymer strips must be cleaned with 

solvent and dried after exposure to diesel. 

Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with 

representative sensors.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Dates of Evaluation: 01/02/95, 06/23/97, 

Tel: (860) 651-2700 04/20/98, 3/3/08 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

401

Issue Date: December 22, 2003 

Revision Date: June 20, 2008 

Veeder-Root

TLS-350 Series, TLS-450 Series, EMC, EMC-PC, EMC Enhanced, EMC-PC Enhanced, and Red 

Jacket ProMax with Magnetostrictive Sump Sensor Series 857060-xxx* and 857080-xxx* 

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative, discriminating 

Sampling frequency: continuous 

Operating principle: magnetostrictive probe with dual floats 

Test Results:

24” Sump Sensor 

Series 857060-xxx* and 

857080-xxx* 

unleaded 

gasoline diesel water

gas on 7” of 

water 

(fuel alarm in 

presence of 

water)

diesel on 7” of 

water 

(fuel alarm in 

presence of 

water)

Detection time (sec) ∼10 ∼10 ∼10 ∼10 ∼10 

Fall time (sec) ∼10 ∼10 ∼10 ∼10 ∼10 

Minimum product level (in) 1.368 1.329 1.614 1.116 1.101 

xxx* - designates sensors in the 857060 and 857080 series containing: 857060 and 857080-101, -102, -

111, -112, -121, -122, -211, -212, -221, and -222. 

Comments: 

One sensor length (24”) was evaluated. Results are typical for the other sensors in the 857060-xxx and 

857080-xxx series, regardless of length and programmability options. 

All sensors are based on the use of a magnetostrictive sensor that is equipped with two floats. The 

lower float will only float on water. The upper float will float on fuel as well as water. 

Results for the “water alarm” threshold will vary based upon programmed alarm levels. 

The “fuel alarm” is based upon a fixed threshold and is not programmable. 

Systems containing these sensors can be programmed to alarm continuously and to shut down the 

dispensing system. 

Sensor will issue an alarm if raised from the bottom of the containment vessel. 

Sensors are reusable. 

Vendor claims sensors are easily removable, cleaned, and reinstalled if an alarm is triggered or for 

periodic testing. 

Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with 

representative sensors.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Dates of Evaluation: 08/26/03, 05/17/04, 04/21/05, 

Tel: (860) 651-2700 05/27/05, 4/26/07, 3/3/08 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

402

Issue Date: November 22, 1995 

Revision Date: June 20, 2008 

Veeder-Root

TLS-350 Series, TLS-450 Series, Red Jacket ProMax with 

Interstitial Liquid Sensor 794380-341, 

Dispenser Pan Sensor 794380-320, 

Discriminating Containment Sump Sensor 794380-350, 

Discriminating Fibretrench Sensor 794380-360, 361, 362

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: capacitance change/ultrasonic (794380-341), electrical conductivity/ultrasonic (794380-320, 350, 360, 

361, 362) 

Test Results:

Interstitial Liquid Sensor 794380-341* 

unleaded 

gasoline diesel water

Response time (min) <1 <1 <1 

Recovery time (min) <1 <1 <1 

Product activation height (cm) <0.125 <0.125 <0.125 

Dispenser Pan Sensor 794380-320, 

Containment Sump Sensor 794380-350, 

Discriminating Fibertrench Sensors 794380-360, 361, 362** high*** low***

Response time (min) 6.59 5.00 4.60 

Recovery time (min) 17.17 <1 <1 

Product activation height (cm) 3.40 20.3 2.45 

 

***The "high" and "low" refer to high and low level alarm points of hydrostatic sensors. 

 

Specificity Results (in addition to above for 794380-341):

This sensor will respond to any liquid after its threshold is exceeded. 

Specificity Results (in addition to above for 794380-320, 350):

Activated: diesel (at liquid height of 4.75 cm), synthetic fuel (at 2.58 cm), heating oil #2 (at 4.67 cm). 

Comments:

Interstitial Liquid Sensor 794380-341 was listed as a discriminating sensor in the 7th edition of this list. However, the vendor has 

since indicated that the sensor is sometimes unable to determine if the liquid is product or water and the sensor was re-evaluated 

as a non-discriminating liquid sensor. Therefore, all alarms initiated by any new or existing Interstitial Liquid Sensor 794380-341 

should be treated as a liquid alarm indicating product and/or water. This may make it necessary to reprogram previously installed 

systems. 

For Discriminating Fibertrench Sensor 794380-360, lowest water level detection and alarm activation is set at 23 inches high and 

highest water alarm is set at 25 inches high; for 794380-361, values are 13 inches and 16 inches; for 794380-362, values are 3 

inches and 12 inches, (based on manufacturer's specifications). 

Sensors are reusable. 

Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with representative sensors. 

*Interstitial Liquid Sensor 794380-341 was replaced by Discriminating Interstitial Sensor 794380-343 and is not supported by TLS450 series console. 

**Discriminating Fibertrench Sensors 794380-360, 361, 362 was replaced by sensors 794380-320 and 794380-350 and is not 

supported by TLS-450. 

Veeder-Root Evaluator: Carnegie Mellon Research Institute 

125 Powder Forest Dr. Tel: (412) 268-3495 

Simsbury, CT 06070-2003 Dates of Evaluation: 06/30/93, 05/26/93, 

Tel: (860) 651-2700 06/30/97 

E-mail: dhalla@veeder.com Evaluator: Ken Wilcox Associates 

URL: www.veeder.com Tel: (816) 443-2494 

Dates of Evaluation: 5/26/93, 11/01/00, 3/3/08 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

403

Issue Date: December 7, 2001 

Revision Date: January 3, 2011 

Veeder-Root

TLS-350, 350R Series, TLS-450 Series, Red Jacket ProMax with 

Discriminating Interstitial Sensor 794380-343, Micro Sensor 794380-344

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative, discriminating (794380-343), non-discriminating (794380-344)

Sampling frequency: continuous 

Operating principle: optical sensor and conductivity (794380-343), optical sensor (794380-344) 

Test Results:

Discriminating Interstitial 

Sensor 794380-343 unleaded gasoline diesel water

Detection time (min) <1 <1 <1 

Fall time (min) <1 <1 <1 

Lower detection limit (in) <0.1 <0.1 <0.1 

Micro Sensor 794380-344* unleaded gasoline diesel water E85 Used Oil

Detection time (min) <1 <1 <1 <1 <1 

Fall time (min) <1 <1 <1 <1 <1 

Lower detection limit (in) <0.1 <0.1 <0.1 <0.1 <0.125 

* This sensor is identified as an interstitial sensor, but will function properly in other containment areas 

such as containment sumps, contained risers and other contained enclosures. This sensor must be 

installed at the lowest point of the containment enclosure to insure early detection of liquids. 

Specificity Results: 

Evaluator claims both 794380-343 and 794380-344 sensors will respond in any liquid after the sensor 

threshold is exceeded. 

Sensor 794380-343 is designed to discriminate between product and water. Separate alarms are 

designed to be triggered for product and water. 

Manufacturer’s Specifications: 

Sensors 794380-343 and 794380-344 can be removed, cleaned, and reinstalled, for periodic testing, if 

an alarm is triggered or if service is necessary. 

Sensor 794380-343 has no moving parts. 

Sensor 794380-344 is designed for use in contained risers and the interstitial space of double-wall steel 

tanks. When product or an open sensor (referred to as “Sensor Out”) is detected, an audible alarm is 

actuated, a message is displayed on the TLS-350 or TLS-350R console, and a printed message is 

generated if the console is equipped with a printer. The alarms are also recorded as part of the TLS350 or TLS-350R “Alarm History Report”. 

Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with 

representative sensors.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 05/10/01, 02/02/06, 03/03/08, 

Tel: (860) 651-2700 08/05/10 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

404

Issue Date: June 26, 2006 

Revision Date: January 4, 2011 

Veeder-Root

TLS-350, 350R Series, TLS-450 Series, Red Jacket ProMax with 

Interstitial Sensor 794380-345

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative, non-discriminating

Sampling frequency: continuous 

Operating principle: optical sensor 

Test Results:

Interstitial Sensor 794380-345 unleaded gasoline diesel water E85

Detection time (min) <1 <1 <1 <1 

Fall time (min) <1 <1 <1 <1 

Lower detection limit (in) <0.2 <0.2 <0.2 <0.2 

Specificity Results: 

Evaluator claims sensor will respond in any liquid after the sensor threshold is exceeded. This testing 

included water, diesel fuel, gasoline, and E85. 

Manufacturer’s Specifications: 

Sensor can be removed, cleaned, and reinstalled, for periodic testing, if an alarm is triggered or if 

service is necessary. 

Sensor has no moving parts. 

Sensor is designed for use in the interstitial space of double-wall fiberglass tanks. When product or an 

open sensor (referred to as “Sensor Out”) is detected, an audible alarm is actuated, a message is 

displayed on the TLS-350 or TLS-350R console, and a printed message is generated if the console is 

equipped with a printer. The alarms are also recorded as part of the TLS-350 or TLS-350R “Alarm 

History Report”. 

Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with 

representative sensors.

This sensor is identified as an interstitial sensor, but will function properly in other containment areas 

such as containment sumps, contained risers and other contained enclosures. This sensor must be 

installed at the lowest point of the containment enclosure to insure early detection of liquids.

Veeder-Root Evaluator: Ken Wilcox Associates 

125 Powder Forest Dr. Tel: (816) 443-2494 

Simsbury, CT 06070-2003 Date of Evaluation: 02/02/06, 3/3/08 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

405

Issue Date: November 22, 1995 

Revision Date: January 4, 2011 

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

PA02590XXX000, (Same as Veeder-Root 0794390-401, 404, 407, 409), 

PA02591144000, (Same as Veeder-Root 0794390-420, 460), 

PA02592000010, (Same as Veeder-Root 0794380-206)

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: float switch 

Test Results:

PA02590XXX000 unleaded gasoline synthetic gasoline

Response time (min) 3.66 3.45 

Recovery time (min) <1 <1 

Product activation height (cm) 1.28 1.27 

Lower detection limit (cm) 1.84 1.65 

PA02591144000*

Response time (min) 6.00 6.51 

Recovery time (min) <1 <1 

Product activation height (cm) 3.67 3.62 

Lower detection limit (cm) 4.05 4.17 

PA02592000010

Response time (min) 8.19 8.49 

Recovery time (min) <1 <1 

Product activation height (cm) 4.12 3.95 

Lower detection limit (cm) 4.67 4.36 

* This sensor is identified as an interstitial sensor, but will function properly in other containment areas 

such as containment sumps, contained risers and other contained enclosures. This sensor must be 

installed at the lowest point of the containment enclosure to insure early detection of liquids. 

Specificity Results (in addition to above):

Activated: diesel, heating oil #2, water. 

Comments: 

Sensors are reusable. 

Veeder-Root Evaluator: Carnegie Mellon Research Institute 

125 Powder Forest Dr. Tel: (412) 268-3495 

Simsbury, CT 06070-2003 Date of Evaluation: 07/17/92, 04/22/98 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

406

Issue Date: November 22, 1995 

Revision Date: June 20, 2008

Veeder-Root

350 Series, TLS-450 Series, Red Jacket ProMax UST Monitoring Systems Models ILS-350, 

TLS-350, 350R, 350PC, 350RPC with Groundwater Sensors 794380-621, 622, 624

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: electrical conductivity 

Test Results:

unleaded gasoline synthetic gasoline

Detection time (min:sec) 8:55 6:18 

Fall time (min:sec) 54:50 26:02 

Lower detection limit (cm) 0.02 0.02 

Specificity Results (in addition to above):

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s). 

Calibration: 

Sensor must be checked annually for operability or in accordance with manufacturer’s instructions and, 

if necessary, calibrated or replaced. 

Comments:

Sensors are reusable. 

Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with 

representative sensors.

Veeder-Root Evaluator: Carnegie Mellon Research Institute 

125 Powder Forest Dr. Tel: (412) 268-3495 

Simsbury, CT 06070-2003 Dates of Evaluation: 11/20/91, 07/28/92 

Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates 

E-mail: dhalla@veeder.com Tel: (816) 443-2494 

URL: www.veeder.com Dates of Evaluations: 3/3/2008 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

407

Issue Date: November 22, 1995 

Revision Date: June 24, 2002 

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

EMC Environmental Management Console Groundwater Sensor Series, 

PA02700XX0001 (Same as Veeder-Root 794380-621, 622, 624)

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: electrical conductivity 

Test Results:

unleaded gasoline synthetic gasoline

Detection time (min:sec) 8:55 6:18 

Fall time (min:sec) 54:50 26:02 

Lower detection limit (cm) 0.02 0.02 

Specificity Results (in addition to above): 

Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s). 

Calibration: 

Sensor must be checked annually for operability or in accordance with manufacturer's instructions and, 

if necessary, calibrated or replaced. 

Comments:

Sensors are reusable. 

Veeder-Root Evaluator: Carnegie Mellon Research Institute 

125 Powder Forest Dr. Tel: (412) 268-3495 

Simsbury, CT 06070-2003 Date of Evaluation: 11/20/91, 07/28/92 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

408

Issue Date: November 22, 1995 

Revision Date: June 20, 2008 

Veeder-Root

ILS-350, TLS-350 Series, TLS-450 Series, Red Jacket ProMax with Adsistor Vapor Probe 

794390-700

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: adsistor 

Test Results:

unleaded gasoline synthetic gasoline JP-4 jet fuel

Detection time (min:sec) 7:46 N/A* 17:01 

Fall time (min:sec) 2:38 N/A 3:05 

Lower detection limit (ppm) 500 >1000 500 

*See Glossary. 

Specificity Results:

Not Activated: n-hexane, toluene, xylene(s). 

Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with 

representative sensors.

Veeder-Root Evaluator: Carnegie Mellon Research Institute 

125 Powder Forest Dr. Tel: (412) 268-3495 

Simsbury, CT 06070-2003 Date of Evaluation: 07/24/92 

Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates 

E-mail: dhalla@veeder.com Tel: (816) 443-2494 

URL: www.veeder.com Dates of Evaluations: 3/3/2008 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

409

Issue Date: November 22, 1995 

Revision Date: June 24, 2002 

Veeder-Root 

(originally listed as Gilbarco Environmental Products and later as Marconi Commerce Systems)

PA02660000000 (Same as Veeder-Root 794390-700)

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector: 

Output type: qualitative 

Sampling frequency: continuous 

Operating principle: adsistor 

Test Results:

unleaded gasoline synthetic gasoline JP-4 jet fuel

Detection time (min:sec) 7:46 N/A* 17:01 

Fall time (min:sec) 2:38 N/A 3:05 

Lower detection limit (ppm) 500 >1000 500 

*See glossary. 

Specificity Results:

Not activated: n-hexane, toluene, xylene(s). 

Veeder-Root Evaluator: Carnegie Mellon Research Institute 

125 Powder Forest Dr. Tel: (412) 268-3495 

Simsbury, CT 06070-2003 Date of Evaluation: 07/24/92 

Tel: (860) 651-2700 

E-mail: dhalla@veeder.com 

URL: www.veeder.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

410

Issue Date: November 22, 1995 

Revision Date: November 21, 2003 

Veeder-Root 

(originally listed as Entropy Limited)

Precision Tank Inventory Control System Version 90

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUALITATIVE)

Certification Leak rate of 0.1 gph with PD = 97.9% and PFA = 0%.

Leak 

Threshold

0.04 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 15,000 gallons.

Data 

Requirement

Minimum of 64 days of product level and throughput data.

Comments Not evaluated using data from manifolded tank systems. 

Of 120 data sets submitted for evaluation, 13 were not evaluated and 16 were 

inconclusive. 

Median monthly throughput of tanks evaluated was 42,835 gallons. 

Data sets evaluated were supplied by evaluator.

Gilbarco/Veeder-Root Evaluator: Midwest Research Institute 

Attn: CMS Mailstop F-76 Tel: (816) 753-7600 

7300 West Friendly Ave. Date of Evaluation: 04/02/91 

P.O. Box 22087 

Greensboro, NC 27420-2087 

Tel: (800) 253-8054 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

411

Issue Date: November 14, 1997 

Revision Date: April 5, 2002

Veeder-Root 

(originally listed as Ustman Industries, Inc.)

USTMAN YES SIR 90

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUALITATIVE)

Certification Leak rate of 0.2 gph with PD = 96.3% and PFA = 3.9%.

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight when a consistent loss or gain equals or 

exceeds this threshold that is statistically significant from zero at the 5% confidence 

level.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 15,000 gallons.

Data 

Requirement

Minimum of 35 days of product level and throughput data.

Comments Not evaluated using manifolded tank systems. 

Of 120 data sets submitted for evaluation, 15 were inconclusive. 

Median monthly throughput of tanks evaluated was 15,867 gallons. 

Data sets evaluated were supplied by evaluator.

Gilbarco/Veeder Root Evaluator: Midwest Research Institute 

Attn: CMS Mailstop F-76 Tel: (816) 753-7600 

7300 West Friendly Ave. Date of Evaluation: 12/17/90 

P.O. Box 22087 

Greensboro, NC 27420-2087 

Tel: (800) 253-8054 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

412

Issue Date: November 22, 1995 

Revision Date: November 21, 2003 

Veeder-Root 

(originally listed as Entropy Limited)

Precision Tank Inventory Control System, Revision 90

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.1 gph with PD = 99.5% and PFA < 0.5%. 

"If a method meets the requirement for detecting a leak rate of 0.1 gph, it will meet 

the requirement for 0.2 gph.", according to "Standard Test Procedures for Evaluating 

Leak Detection Methods: 

Statistical Inventory Reconciliation Methods", EPA/530/UST-90/007, June 1990, 

Section 7.2.3, page 30.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 22,500 gallons for single tanks. 

Maximum of 60,000 gallons cumulative capacity for manifolded tank systems with no 

more than 3 tanks in system.

Data 

Requirement

Minimum of 30 days of product level and throughput data.

Comments 32% of data sets evaluated were from manifolded tank systems. 

Of 56 data sets submitted for evaluation, 6 were not analyzed due to unusable data 

and none were inconclusive. 

Median monthly throughput of tanks evaluated was 52,207 gallons. 

Leak rates ranging from 0.0497 to 0.203 gph were used in evaluation. 

Data sets evaluated were supplied by evaluator.

Gilbarco/Veeder Root Evaluator: Simpson, Gumpertz and Heger, Inc. 

Attn: CMS Mailstop F-76 Tel: (617) 643-2000 

7300 West Friendly Ave. Date of Evaluation: 11/30/93 

P.O. Box 22087 

Greensboro, NC 27420-2087 

Tel: (800) 253-8054 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

413

Issue Date: November 22, 1995 

Revision Date: April 5, 2002

Veeder-Root 

(originally listed as Ustman Industries, Inc.)

USTMAN SIR 1.91

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.1 gph with PD = 98.4% and PFA = 1.6%. 

"If a method meets the requirement for detecting a leak rate of 0.1 gph, it will meet 

the requirement for 0.2 gph.", according to "Standard Test Procedures for Evaluating 

Leak Detection Methods: Statistical Inventory Reconciliation Methods", EPA/530/UST90/007, June 1990, Section 7.2.3, page 30.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight when a consistent loss or gain equals or 

exceeds this threshold at the 5% level of significance.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 18,000 gallons.

Data 

Requirement

Minimum of 42 days of product level and throughput data.

Comments Not evaluated using data from manifolded tank systems. 

Of 41 data sets submitted for evaluation, 4 data sets were not analyzed and 7 were 

inconclusive. 

Median monthly throughput of tanks evaluated was 10,978 gallons. 

Leak rates ranging from 0.048 to 0.201 gph were used in evaluation. 

Data sets evaluated were supplied by evaluator.

Gilbarco/Veeder Root Evaluator: Ken Wilcox Associates 

Attn: CMS Mailstop F-76 Tel: (816) 443-2494 

7300 West Friendly Ave. Date of Evaluation: 10/31/91 

P.O. Box 22087 

Greensboro, NC 27420-2087 

Tel: (800) 253-8054 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

414

Issue Date: November 22, 1995 

Revision Date: April 5, 2002 

Veeder-Root 

(originally listed as Ustman Industries, Inc.)

USTMAN SIR Version 94.1

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.1 gph with PD > 99% and PFA < 1.0%. 

"If a method meets the requirement for detecting a leak rate of 0.1 gph, it will meet 

the requirement for 0.2 gph.", according to "Standard Test Procedures for Evaluating 

Leak Detection Methods: Statistical Inventory Reconciliation Methods", EPA/530/UST90/007, June 1990, Section 7.2.3, page 30.

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor.

Tank Capacity Maximum of 30,000 gallons.

Data 

Requirement

Minimum of 30 days of product level and throughput data.

Comments Evaluated using some data from manifolded tank systems. 

Of 53 data sets submitted for evaluation, all were analyzed with conclusive results. 

Median monthly throughput of tanks evaluated was 25,408 gallons. 

Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation. 

Data sets evaluated were supplied by evaluator. 

Some data sets used USTMAN SIR 1.91 (0.1 gph) analysis as documentation that 

tanks were tight.

Gilbarco/Veeder Root Evaluator: Ken Wilcox Associates 

Attn: CMS Mailstop F-76 Tel: (816) 443-2494 

7300 West Friendly Ave. Date of Evaluation: 03/31/94 

P.O. Box 22087 

Greensboro, NC 27420-2087 

Tel: (800) 253-8054 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

415

Issue Date: November 22, 1995 

Revision Date: April 5, 2002 

Veeder-Root 

(originally listed as Ustman Industries, Inc.)

USTMAN SIR Versions 95.2, 95.2A, 95.2B 

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE) 

Certification Leak rate of 0.1 gph with PD > 99.2% and PFA < 0.08% (Version 95.2). 

Leak rate of 0.2 gph with PD > 99.9% and PFA < 0.1% (Version 95.2A). 

Leak rate of 0.2 gph with PD > 97.2% and PFA < 0.1% (Version 95.2B). 

Leak 

Threshold

0.05 for leak rate of 0.1 gph (Version 95.2). 

0.1 for leak rate of 0.2 gph (Version 95.2A). 

0.16 for leak rate of 0.2 gph (Version 95.2B). 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Applicability Gasoline, diesel. Other more viscous liquids may be tested after consultation with the 

vendor. 

Tank Capacity Maximum of 60,000 gallons for single tanks. 

Maximum of 60,000 gallons cumulative capacity for manifolded tank systems with no 

more than 4 tanks in system. 

Data 

Requirement

Minimum of 30 days of product level and throughput data. 

Comments 44% of data sets evaluated were from manifolded tank systems. 

Of 94 data sets submitted for evaluation, all were analyzed with conclusive results. 

Results obtained from combined data for USTMAN Version 94.1 and 95.2. 

Data used in the evaluation were obtained from manual tank sticking. 

Median monthly throughput of tanks evaluated was 15,483 gallons. 

Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation. 

Data sets evaluated were supplied by evaluator.

Gilbarco/Veeder Root Evaluator: Ken Wilcox Associates 

Attn: CMS Mailstop F-76 Tel: (816) 443-2494 

7300 West Friendly Ave. Date of Evaluation: 12/12/95, 07/21/00 

P.O. Box 22087 

Greensboro, NC 27420-2087 

Tel: (800) 253-8054 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

416

Issue Date: November 22, 1995 

Revision Date: June 25 2002

Veeder-Root 

(originally listed as EnviroQuest Technologies Limited and later as Watson Systems, Inc.)

Watson SIRAS Software System Versions 2.0, 2.8.3 

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE) 

Certification Leak rate of 0.2 gph with PD = 99.999% and PFA = 0.01% 

Leak rate of 0.1 gph with PD = 99.3% and PFA = 0.7% 

Leak 

Threshold

0.1 for leak rate of 0.2 gph. 

0.05 for leak rate of 0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor. 

Tank Capacity Maximum of 30,000 gallons. 

Size limits using an acceptable protocol for manifolded tank systems have not been 

determined. 

Data 

Requirement

Minimum of 30 days of usable product level and throughput data. 

System 

Features

Backup technical support for the end user was part of the service feature of these SIR 

versions and was provided through contract with Watson Systems, Inc. 

Since these SIR versions are now owned by Veeder-Root, information, assistance, and 

technical support for these versions are at their discretion. 

Comments Not evaluated for in-house use that is independent of vendor participation. 

Not evaluated for manifolded tank systems using an acceptable protocol. 27% of data 

sets evaluated were from manifolded tank systems. 

Of 56 data sets submitted for evaluation, 6 were not analyzed due to unusable data. 

Median monthly throughput for tanks evaluated was 73,518 gallons. 

Leak rates ranging from 0.0458 to 0.2500 gph were used in evaluation. 

Data sets evaluated were supplied by evaluator.

Gilbarco/Veeder Root Evaluator: Midwest Research Institute 

Attn: CMS Mailstop F-76 Tel: (816) 753-7600 

7300 West Friendly Ave. Date of Evaluation: 08/23/93 

P.O. Box 22087 

Greensboro, NC 27420-2087 

Tel: (800) 253-8054 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

417

Issue Date: August 23, 1999 

Vista Research, Inc. and Naval Facilities Engineering Service Center 

LRDP-24 (V1.0.2, V1.0.3) 

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater) 

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 6,082 ft2, leak rate is 2.0 or 3.0 gph with PD = 95% and PFA < 0.001%. 

Choose one to determine the scaled leak rate and scaled leak threshold for the tank being monitored. 

For other tank sizes, scaled leak rate equals [(PSA in ft2 ÷ 6,082 ft2) x (leak rate in gph)]. 

Example: 

For a tank with PSA = 10,000 ft2, leak rate = 2.0 gph; scaled leak rate = [(10,000 ft2 ÷ 6,082 ft2) x 2.0 gph] = 

3.29 gph. Calculated minimum detectable leak rate is 0.446 gph with PD = 95% and PFA = 5%. 

Leak rate may not be scaled below 0.2 gph. 

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 6,082 ft2 and leak rate of 2.0 or 3.0 gph, leak threshold is 1.777 or 2.77gph respectively. 

For other tank sizes, scaled leak threshold equals [(PSA in ft2 ÷ 6,082 ft2) x (leak rate in gph - 0.223 gph)]. 

Example: 

For a tank with PSA = 10,000 ft2, leak rate = 2.0 gph; scaled leak threshold = [(10,000 ft2 ÷ 6,082 ft2) x (2.0 

gph - 0.223 gph)] = 2.92 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds the 

calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single field-constructed vertical tanks larger than 50,000 gallons. 

Maximum product surface area (PSA) is 15,205 ft2 (approximately 139 ft diameter). 

Performance not sensitive to product level. 

Waiting Time Minimum of 24 hours after delivery or dispensing. 

Valve leaks and pump drain-back may mask a leak. 

Allow sufficient waiting time to minimize these effects. 

Waiting times during evaluation ranged from 16.08 to 115.8 hours. 

Test Period Minimum of 24 hours. 

There must be no dispensing or delivery during test. 

Temperature Measurement not required by this system. 

Water Sensor None. 

Water leaks are measured as increase in mass inside tank. 

Calibration Differential pressure sensor must be checked regularly in accordance with manufacturer's instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. Evaluated in a nominal 600,000 gallon, 

vertical underground tank with product surface area (PSA) of 6,082 ft2. 

Not evaluated as a stand alone system. 

Significant bias of 0.103 gph was detected during the evaluation. 

Evaluator believes this bias was the result of product inflow into the tank from valve leaks and product drain back 

from the pump return line and thus evaluator did not use this bias in calculating above results. 

Performance of the system can be improved by combining results of 2 or more tests. 

If this option is used, it is important to determine the number of tests, their timing and the number of passing 

results necessary to confirm a tank is tight. 

The LRDP-24-5 (V1.0) combines the results of 5 tests and is one evaluated option to improve the performance of 

this system. 

Vista Research, Inc. & Naval Facilities Engineering Service Ctr. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 01/29/99 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

418

Issue Date: August 23, 1999 

Vista Research, Inc. and Naval Facilities Engineering Service Center 

LRDP-48 (V1.0.2, V1.0.3) 

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater) 

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 6,082 ft2, leak rate is 2.0 or 3.0 gph with PD = 95% and PFA < 0.001%. 

Choose one to determine the scaled leak rate and scaled leak threshold for the tank being monitored. 

For other tank sizes, scaled leak rate equals [(PSA in ft2 ÷ 6,082 ft2) x (leak rate in gph)]. 

Example: 

For a tank with PSA = 10,000 ft2, leak rate = 2.0 gph; scaled leak rate = [(10,000 ft2 ÷ 6,082 ft2) x 2.0 gph] = 

3.29 gph. Calculated minimum detectable leak rate is 0.376 gph with PD = 95% and PFA = 5%. 

Leak rate may not be scaled below 0.2 gph. 

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 6,082 ft2 and leak rate of 2.0 or 3.0 gph, leak threshold is 1.812 or 2.812 gph respectively.

For other tank sizes, scaled leak threshold equals [(PSA in ft2 ÷ 6,082 ft2) x (leak rate in gph - 0.188 gph)]. 

Example: 

For a tank with PSA = 10,000 ft2, leak rate = 2.0 gph; scaled leak threshold = [(10,000 ft2 ÷ 6,082 ft2) x (2.0 

gph - 0.188 gph)] = 2.98 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds the 

calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single field-constructed vertical tanks larger than 50,000 gallons. 

Maximum product surface area (PSA) is 15,205 ft2 (approximately 139 ft diameter). 

Performance not sensitive to product level. 

Waiting Time Minimum of 24 hours after delivery or dispensing. 

Valve leaks and pump drain-back may mask a leak. 

Allow sufficient waiting time to minimize these effects. 

Waiting times during evaluation ranged from 16.08 to 115.8 hours. 

Test Period Minimum of 48 hours. 

There must be no dispensing or delivery during test. 

Temperature Measurement not required by this system. 

Water Sensor None. Water leaks are measured as increase in mass inside tank. 

Calibration Differential pressure sensor must be checked regularly in accordance with manufacturer's instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. Evaluated in a nominal 600,000 gallon, 

vertical underground tank with product surface area (PSA) of 6,082 ft2. 

Not evaluated as a stand alone system. 

Significant bias of 0.078 gph was detected during the evaluation. 

Evaluator believes this bias was the result of product inflow into the tank from valve leaks and product drain back 

from the pump return line and thus evaluator did not use this bias in calculating above results. 

Performance of the system can be improved by combining results of 2 or more tests. 

If this option is used, it is important to determine the number of tests, their timing and the number of passing 

results necessary to confirm a tank is tight. 

The LRDP-48-4 (V1.0) combines the results of 4 tests and is one evaluated option to improve the performance of 

this system. 

Vista Research, Inc. & Naval Facilities Engineering Service Ctr. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 01/29/99 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

419

Issue Date: August 23, 1999 

Vista Research, Inc. and Naval Facilities Engineering Service Center 

LRDP-24 (V1.1) 

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater) 

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 6,082 ft2, leak rate is 0.856 gph with PD = 95% and PFA = 0.017%. 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 6,082 ft2) x 0.856 gph]. 

Example: 

For a tank with PSA = 10,000 ft2; leak rate = [(10,000 ft2 ÷ 6,082 ft2) x 0.856 gph] = 1.407 gph. Calculated 

minimum detectable leak rate is 0.446 gph with PD = 95% and PFA = 5%. 

Leak rate may not be scaled below 0.2 gph. 

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 6,082 ft2, leak threshold is 0.632 gph. 

For other tank sizes, leak threshold equals [(PSA in ft2 ÷ 6,082 ft2) x 0.632 gph]. 

Example: 

For a tank with PSA = 10,000 ft2; leak threshold = [(10,000 ft2 ÷ 6,082 ft2) x 0.632 gph] = 1.039 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds the 

calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single field-constructed vertical tanks larger than 50,000 gallons. 

Maximum product surface area (PSA) is 15,205 ft2 (approximately 139 ft diameter). 

Performance not sensitive to product level. 

Waiting Time Minimum of 24 hours after delivery or dispensing. 

Valve leaks and pump drain-back may mask a leak. 

Allow sufficient waiting time to minimize these effects. 

Waiting times during evaluation ranged from 16.08 to 115.8 hours. 

Test Period Minimum of 24 hours. 

There must be no dispensing or delivery during test. 

Temperature Measurement not required by this system. 

Water Sensor None. 

Water leaks are measured as increase in mass inside tank. 

Calibration Differential pressure sensor must be checked regularly in accordance with manufacturer's instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. Evaluated in a nominal 600,000 gallon, 

vertical underground tank with product surface area (PSA) of 6,082 ft2. 

Not evaluated as a stand alone system. 

Significant bias of 0.103 gph was detected during the evaluation. 

Evaluator believes this bias was the result of product inflow into the tank from valve leaks and product drain back 

from the pump return line and thus evaluator did not use this bias in calculating above results. 

Performance of the system can be improved by combining results of 2 or more tests. 

If this option is used, it is important to determine the number of tests, their timing and the number of passing 

results necessary to confirm a tank is tight. 

The LRDP-24-5 (V1.1) combines the results of 5 tests and is one evaluated option to improve the performance of 

this system. 

Vista Research, Inc. & Naval Facilities Engineering Service Ctr. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 01/29/99 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

420

Issue Date: August 23, 1999 

Vista Research, Inc. and Naval Facilities Engineering Service Center 

LRDP-48 (V1.1) 

BULK UNDERGROUND STORAGE TANK LEAK DETECTION (50,000 gallons or greater) 

Certification Leak rate is proportional to product surface area (PSA). 

For tanks with PSA of 6,082 ft2, leak rate is 0.749 gph with PD = 95% and PFA = 0.012%. 

For other tank sizes, leak rate equals [(PSA in ft2 ÷ 6,082 ft2) x 0.749 gph]. 

Example: 

For a tank with PSA = 10,000 ft2; leak rate = [(10,000 ft2 ÷ 6,082 ft2) x 0.749 gph] = 1.232 gph. 

Calculated minimum detectable leak rate is 0.376 gph with PD = 95% and PFA = 5%. 

Leak rate may not be scaled below 0.2 gph. 

Leak 

Threshold

Leak threshold is proportional to product surface area (PSA). 

For tanks with PSA of 6,082 ft2, leak threshold is 0.563 gph. 

For other tank sizes, leak threshold equals [(PSA in ft2 ÷ 6,082 ft2) x 0.563 gph]. 

Example: 

For a tank with PSA = 10,000 ft2; leak threshold = [(10,000 ft2 ÷ 6,082 ft2) x 0.563 gph] = 0.926 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds the 

calculated leak threshold. 

Applicability Gasoline, diesel, aviation fuel. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Use limited to single field-constructed vertical tanks larger than 50,000 gallons. 

Maximum product surface area (PSA) is 15,205 ft2 (approximately 139 ft diameter). 

Performance not sensitive to product level. 

Waiting Time Minimum of 24 hours after delivery or dispensing. 

Valve leaks and pump drain-back may mask a leak. 

Allow sufficient waiting time to minimize these effects. 

Waiting times during evaluation ranged from 16.08 to 115.8 hours. 

Test Period Minimum of 48 hours. 

There must be no dispensing or delivery during test. 

Temperature Measurement not required by this system. 

Water Sensor None. 

Water leaks are measured as increase in mass inside tank. 

Calibration Differential pressure sensor must be checked regularly in accordance with manufacturer's instructions. 

Comments Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

Evaluated in a nominal 600,000 gallon, vertical underground tank with product surface area (PSA) of 6,082 ft2. 

Not evaluated as a stand alone system. 

Significant bias of 0.078 gph was detected during the evaluation. 

Evaluator believes this bias was the result of product inflow into the tank from valve leaks and product drain back 

from the pump return line and thus evaluator did not use this bias in calculating above results. 

Performance of the system can be improved by combining results of 2 or more tests. 

If this option is used, it is important to determine the number of tests, their timing and the number of passing 

results necessary to confirm a tank is tight. 

The LRDP-24-5 (V1.1) combines the results of 5 tests and is one evaluated option to improve the performance of 

this system. 

Vista Research, Inc. & Naval Facilities Engineering Service Ctr. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 01/29/99 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

421

Issue Date: August 23, 1999 

Revision Date: March 31, 2006 

Vista Research, Inc. 

Model HT-100 Monitoring Method and Line Tightness Test Method Version 1.0, Version 1.1 

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above) 

Certification Leak rate of 0.004% of line capacity (0.04 gph per 1000 gallons of product) with PD = 

95% and PFA = 1.25% for Version 1.0, (smallest leak rate for Version 1.0 evaluation, 

which was conducted on a 306,477 gallon line at 160 psi, was 12.3 gph). 

Leak rate of 0.00209% of line capacity (0.0209 gph per 1000 gallons of product) with 

PD = 95% and PFA = 5% for Version 1.1, (smallest leak rate for Version 1.1 

evaluation, which was conducted on a 306,477 gallon line at 160 psi, was 6.42 gph). 

The USEPA has not set a minimum detectable leak rate for large diameter 

pipeline systems (airport hydrant systems) at the time of this evaluation.

Leak 

Threshold

0.00282% of line volume in gph for Version 1.0. 

0.000916% of line volume in gph for Version 1.1 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds these thresholds. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests fiberglass or steel piping. 

Tests are conducted at operating pressure to a maximum of 200 psi. 

Pipeline 

Capacity

Maximum of 612,954 gallons. Minimum of 3,000 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Minimum of 3 hours, 10 minutes after setup and after pipeline is fully isolated. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

System may be permanently installed on pipeline to perform monitoring, or may be 

transported and set up to perform line tightness testing. 

A single 3-hour 10-minute test is required consisting of a 1-hour 10-minute monitoring 

period at operating pressure, and a 2-hour monitoring period at atmospheric pressure. 

System measures change in volume and reports output quantity in gph, while 

compensating for thermal effects. 

Printed message and alarm activation if leak is declared. 

Calibration System must be calibrated in accordance with manufacturer’s instructions. 

Comments System is to be used only on large bulk pipelines and airport hydrant fueling systems. 

This evaluation utilized a total of 87 tests, one with induced leak rate of 13.1 gph.

Vista Research, Inc. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 11/06/98 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

422

Issue Date: November 19, 2010 

Vista Research, Inc. 

Model HT-100 Monitoring Method and Line Tightness Test Method Version 2.1

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above) 

Certification Leak rate of 0.00189% of line capacity (0.0189 gph per 1000 gallons of product) with 

PD = 95% and PFA = 5% for Version 2.1, (smallest leak rate for this evaluation, which 

was conducted on a 160,000 gallon line at 150 psi, was 3.03 gph). 

The USEPA has not set a minimum detectable leak rate for large diameter 

pipeline systems (airport hydrant systems) at the time of this evaluation.

Leak 

Threshold

0.000945% of line volume in gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds these thresholds. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4, biodiesel B6-B20 meeting ASTM D7647, 

biodiesel B100 meeting ASTM D6751*. 

Pipelines containing other liquids may be tested after approval from the manufacturer. 

*NWGLDE Listings apply to leak detection functionality only and not material 

compatibility – see “Disclaimer” on page ii.

Specification System tests fiberglass or steel piping. 

Pipeline 

Capacity

Maximum of 320,000 gallons, minimum of 3,000 gallons.

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Minimum 60 minutes after line setup. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

System may be permanently installed on pipelines to perform monitoring, or may be 

transported and set up to perform line tightness testing. 

A single 60-minute test is required consisting of a 30-minute monitoring period at 

operating pressure, and a 30–minute monitoring period at a lower pressure, 

approximately 30 psi. 

System measures change in pressure and reports output quantity in gph, while 

compensating for thermal effects. 

Printed message and alarm activation if leak is declared. 

Calibration System must be calibrated prior to the initial test in accordance with manufacturer’s 

instructions.

Comments System is to be used on large bulk pipelines and airport hydrant fueling systems. 

Vista Research, Inc. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 08/25/07 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

423

Issue Date: August 23, 1999 

Revision Date: March 31, 2006 

Vista Research, Inc. 

Model HT-100-n Monitoring Method and Line Tightness Test Method Version 1.0, Version 1.1 

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above) 

Certification Leak rate of 0.004%÷ √ ̄(n) of line capacity (for n=4, 0.02 gph per 1000 gallons of product) with 

PD = 95% and PFA = 1.25% for Version 1.0, where n is the number of tests averaged together 

(smallest leak rate for Version 1.0 evaluation, which was conducted on a 306,477 gallon line at 160 

psi where n = 3, was 7.08 gph). 

Leak rate of 0.00209%÷ √ ̄(n) of line capacity (for n=4, 0.01045 gph per 1000 gallons of product) 

with PD = 95% and PFA = 5% for Version 1.1, where n is the number of tests averaged together 

(smallest leak rate for Version 1.1 evaluation, which was conducted on a 306,477 gallon line at 160 

psi where n = 3, was 3.71 gph). 

The USEPA has not set a minimum detectable leak rate for large diameter pipeline 

systems (airport hydrant systems) at the time of this evaluation.

Leak 

Threshold

0.00282% ÷ √ ̄(n) of line volume in gph for Version 1.0. 0.000916% ÷ √ ̄(n) of line volume in 

gph for Version 1.1. 

A pipeline system should not be declared tight if the test result indicates a loss that equals or 

exceeds these thresholds. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests fiberglass or steel piping. 

Tests are conducted at operating pressure to a maximum of 200 psi. 

Pipeline 

Capacity

Maximum of 612,954 gallons. 

Minimum of 3,000 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Minimum of 3 hours, 10 minutes after setup and after pipeline is fully isolated. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

Averaging of individual tests, where tests may be selected over any time frame yet not necessarily 

consecutive. 

System 

Features

System may be permanently installed on pipeline to perform monitoring, or may be transported 

and set up to perform line tightness testing. 

A single 3-hour 10-minute test is required consisting of a 1-hour 10-minute monitoring period at 

operating pressure, and a 2-hour monitoring period at atmospheric pressure. 

System measures change in volume and reports output quantity in gph, while compensating for 

thermal effects. Printed message and alarm activation if leak is declared. 

Calibration System must be calibrated in accordance with manufacturer’s instructions. 

Comments System is to be used only on large bulk pipelines and airport hydrant fueling systems. 

This evaluation utilized a total of 87 tests, one with an induced leak rate of 13.1 gph. 

Vista Research, Inc. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 11/24/98 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

424

Issue Date: April 18, 1997 

Revision Date: December 4, 2002 

Vista Research, Inc. 

Model LT-100 Monthly Monitoring Method and Line Tightness Test Method Version 1.0 

(Manual Method) 

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above)

Certification Leak rate of 0.2 gph with PD = 96% and PFA < 4%. 

Leak rate of 0.1 gph with PD = 96% and PFA = 4%. 

The USEPA has not set a minimum detectable leak rate for large diameter 

pipeline systems (airport hydrant systems) at the time of this evaluation.

Leak 

Threshold

0.177 gph for leak rate of 0.2 gph. 

0.077 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests fiberglass or steel piping. 

Tests are conducted at operating pressure to a maximum of 200 psi. 

Pipeline 

Capacity

Maximum of 3,400 gallons. 

Waiting Time None between delivery and testing. None between dispensing and testing. 

Test Period Minimum of 2 hours after setup and after pipeline is fully isolated. 

Test data are acquired and recorded manually. Calculations are performed by tester. 

System 

Features

System may be permanently installed on pipeline to perform monthly monitoring or 

line tightness testing, or may be transported and set up to perform line tightness 

testing. 

A single 2-hour test is required consisting of a 1-hour monitoring period at operating 

pressure and a 1-hour monitoring period at atmospheric pressure. 

Preset threshold. Printed message and alarm activation if leak is declared. 

Calibration System must be calibrated in accordance with manufacturer’s instructions during 

system setup.

Vista Research, Inc. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 04/15/96 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

425

Issue Date: April 18, 1997 

Revision Date: December 4, 2002 

Vista Research, Inc. 

Model LT-100 Monthly Monitoring Method and Line Tightness Test Method Version 1.0 

(Primary Method) 

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above) 

Certification Leak rate of 0.2 gph with PD = 97% and PFA < 3%. 

Leak rate of 0.1 gph with PD = 97% and PFA = 3%. 

The USEPA has not set a minimum detectable leak rate for large diameter 

pipeline systems (airport hydrant systems) at the time of this evaluation.

Leak 

Threshold

0.148 gph for leak rate of 0.2 gph. 

0.06 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests fiberglass or steel piping. 

Tests are conducted at operating pressure to a maximum of 200 psi. 

Pipeline 

Capacity

Maximum of 3,400 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Maximum of 2 hours after setup and after pipeline is fully isolated. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

System may be permanently installed on pipeline to perform monthly monitoring or 

line lightness testing, or may be transported and set up to perform line tightness 

testing. 

A single 2-hour test is required consisting of a 1-hour monitoring period at operating 

pressure, and a 1-hour monitoring period at atmospheric pressure. 

Preset threshold. Printed message and alarm activation if leak is declared. 

Calibration System must be calibrated in accordance with manufacturer’s instructions during 

system setup.

Vista Research, Inc. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 04/15/96 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

426

Issue Date: April 18, 1997 

Revision Date: December 4, 2002

Vista Research, Inc. 

Model LT-100 Monthly Monitoring Method and Line Tightness Test Method Version 1.0 

(Segmented Method) 

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above) 

Certification Leak rate of 0.2 gph with PD = 97% and PFA = 3%. 

Leak rate of 0.1 gph with PD = 97% and PFA = 3%. 

The USEPA has not set a minimum detectable leak rate for large diameter 

pipeline systems (airport hydrant systems) at the time of this evaluation.

Leak 

Threshold

0.174 gph for leak rate of 0.2 gph. 

0.074 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests fiberglass or steel piping. 

Tests are conducted at operating pressure to a maximum of 200 psi. 

Pipeline 

Capacity

Maximum of 3,400 gallons. 

Waiting Time None between delivery and testing. None between dispensing and testing. 

Test Period Minimum of 2 hours after setup and after pipeline is fully isolated. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

System may be permanently installed on pipeline to perform monthly monitoring or 

line tightness testing, or may be transported and set up to perform line tightness 

testing. 

A single 2-hour test is required consisting of two 5-minute monitoring segments at 

atmospheric pressure spaced 25 minutes apart, and two 5-minute monitoring 

segments at operating pressure spaced 25 minutes apart. 

Preset threshold. 

Printed message and alarm activation if leak is declared. 

Calibration System must be calibrated in accordance with manufacturer’s instructions during 

system setup.

Vista Research, Inc. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 04/15/96 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

427

Issue Date: August 23, 1999 

Revision Date: December 4, 2002 

Vista Research, Inc. 

Model LT-100a Monthly Monitoring Method and Line Tightness Test Method Version 1.0 

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above) 

Certification Leak rate of 0.2 gph at 50 psi with PD > 97% and PFA < 3% for Monthly Monitoring 

Method. 

Leak rate of 0.1 gph at 50 psi with PD = 97% and PFA = 3% for Line Tightness Test 

Method. 

The USEPA has not set a minimum detectable leak rate for large diameter 

pipeline systems (airport hydrant systems) at the time of this evaluation.

Leak 

Threshold

0.148 gph for leak rate of 0.2 gph. 

0.06 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests fiberglass or steel piping. 

Tests are conducted at operating pressure to a maximum of 200 psi. 

Pipeline 

Capacity

Maximum of 3,400 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Minimum of 2 hours after setup and after pipeline is fully isolated. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

System may be permanently installed on pipeline to perform monthly monitoring or 

line tightness testing, or may be transported and set up to perform line tightness 

testing. 

A single 2-hour test is required consisting of a 1-hour monitoring period at operating 

pressure, and a 1-hour monitoring period at atmospheric pressure. 

Discrete test method (Monthly Monitoring Method only). 

Preset threshold. 

Printed message and alarm activation if leak is declared. 

Calibration System must be calibrated in accordance with manufacturer’s instructions during 

system setup.

Vista Research, Inc. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 11/06/98 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

428

Issue Date: August 23, 1999 

Revision Date: December 4, 2002 

Vista Research, Inc. 

Model LT-100a Monthly Monitoring Method and Line Tightness Test Method Version 1.0 

(Segmented Method) 

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above) 

Certification Leak rate of 0.2 gph at 50 psi with PD > 97% and PFA < 3% for Monthly Monitoring 

Method. 

Leak rate of 0.1 gph at 50 psi with PD = 97% and PFA = 3% for Line Tightness Test 

Method. 

The USEPA has not set a minimum detectable leak rate for large diameter 

pipeline systems (airport hydrant systems) at the time of this evaluation.

Leak 

Threshold

0.174 gph for leak rate of 0.2 gph. 

0.074 gph for leak rate of 0.1 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests fiberglass or steel piping. 

Tests are conducted at operating pressure to a maximum of 200 psi. 

Pipeline 

Capacity

Maximum of 3,400 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Minimum of 2 hours after setup and after pipeline is fully isolated. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

System may be permanently installed on pipeline to perform monthly monitoring or 

line tightness testing, or may be transported and set up to perform line tightness 

testing. 

A single 2-hour test is required consisting of two 5-minute monitoring segments at 

atmospheric pressure spaced 25 minutes apart, and two 5-minute monitoring 

segments at operating pressure spaced 25 minutes apart. 

Discrete test method (Monthly Monitoring Method only). 

Preset threshold. 

Printed message and alarm activation if leak is declared. 

Calibration System must be calibrated in accordance with manufacturer’s instructions during 

system setup.

Vista Research, Inc. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 11/06/98 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

429

Issue Date: August 23, 1999 

Revision Date: December 4, 2002 

Vista Research, Inc. 

Model LT-100a Hourly and Monthly Monitoring Method and Line Tightness Test Method 

Version 2.0 

(Segmented Method) 

LARGE DIAMETER LINE LEAK DETECTION METHOD (6 inches diameter or above) 

Certification Leak rate of 3.0 gph with PD = 95% and PFA < 0.1% for Hourly Monitoring Method. 

Leak rate of 0.2 gph with PD = 95% and PFA = 2.9% for Monthly Monitoring Method. 

The USEPA has not set a minimum detectable leak rate for large diameter 

pipeline systems (airport hydrant systems) at the time of this evaluation.

Leak 

Threshold

2.936 gph for leak rate of 3.0 gph. 

0.136 gph for leak rate of 0.2 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests fiberglass or steel piping. 

Tests are conducted at operating pressure to a maximum of 200 psi. 

Pipeline 

Capacity

Maximum of 3,400 gallons. 

Waiting Time None between delivery and testing. 

None between dispensing and testing. 

Test Period Minimum of 15 minutes after setup and after pipeline is fully isolated. 

Test data are acquired and recorded by a microprocessor. 

Calculations are automatically performed by the microprocessor. 

System 

Features

System may be permanently installed on pipeline to perform hourly monitoring or 

monthly monitoring, or may be transported and set up to perform line tightness 

testing. 

A single 15-minute test is required consisting of two 3-minute monitoring segments at 

atmospheric pressure spaced 0 minutes apart, and two 3-minute monitoring segments 

at operating pressure spaced 0 minutes apart. 

Discrete test methods. 

Preset threshold. 

Printed message and alarm activation if leak is declared. 

Calibration System must be calibrated in accordance with manufacturer’s instructions during 

system setup.

Vista Research, Inc. Evaluator: Ken Wilcox Associates 

755 North Mary Ave. Tel: (816) 443-2494 

Sunnyvale, CA 94085 Date of Evaluation: 11/06/98 

Tel: (408) 830-3300 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

430

Issue Date: September 15, 2003 

Revision Date: June 8, 2005

Warren Rogers Associates, Inc. 

WRA PetroNetwork S3 (Version D) 

Continual Reconciliation System for CITLDS Using Multiple ATG System 

with Magnetostrictive Tank Probes for Tanks and Associated Pipelines

CONTINUOUS IN-TANK LEAK DETECTION METHOD (CONTINUAL RECONCILIATION)

Certification Leak rate of 0.2 gph for tanks and associated pipelines with PD > 99% and PFA < 

1%. 

Leak 

Threshold

0.1 gph for single and manifolded tank systems including associated pipelines. 

A tank system should not be declared tight and a message printed for the operator, if 

the test results indicate a loss or gain that exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

System is designed primarily for use with petroleum fuels. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 100,000 gallons for single tanks and for up to 5 tanks manifolded 

together. 

Tank must be between 9% and 94.4% full. 

Contact manufacturer for tank system applications if total tank capacity exceeds 

100,000 gallons. 

Throughput Monthly maximum of 2,718,013 gallons. 

Waiting Time None between delivery and data collection when difference between product in tank 

and product delivered is 7.4 degrees F or less. 

Test Period Data collection time ranges from 6 to 31 days. 

Data sampling frequency is every 1 to 15 minutes. 

System collects data at naturally occurring product levels upon completion of a sales 

transaction or set of overlapping sales transactions without interfering with normal 

tank operation, and at time periods when the tank system is dormant. 

Temperature Average for product is determined by a minimum of 5 thermistors. 

Water Sensor Must be used to detect water ingress in accordance with the certified performance of 

the Automatic Tank Gauge used. 

Calibration The Automatic Tank Gauge used must have thermistors and probe checked and, if 

necessary, calibrated in accordance with manufacturer's instructions. 

Meter calibration must be checked at outset of monitoring and recalibrated when 

system detects significant departure from original calibration. 

DATA SHEET CONTINUED ON NEXT PAGE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

431

DATA SHEET CONTINUED FROM PREVIOUS PAGE: Warren Rogers Associates, Inc., WRA 

PetroNetwork S3 (Version D) Continual Reconciliation System for CITLDS Using Multiple ATG 

System with Magnetostrictive Tank Probes for Tanks and Associated Pipelines

Comments Tests only the portion of tank system containing product. 

System reports a result of “pass” or “fail” and indicates minimum detectable leak and 

leak threshold for tanks and associated pipelines. 

Evaluated for tanks and associated pipelines for both single and manifolded tank 

systems with probes in each tank. 

For valid monthly testing, a conclusive report must be generated for each tank system 

every month. 

Constant and variable leaks were mathematically induced into tight tank records and 

data collected at various tank sites by previously evaluated Veeder-Root TLS-350 and 

OPW Fuel Management Systems EECO 1500 Automatic Tank Gauges with 

magnetostrictive probes. 

Automatic Tank Gauges used with this method must be on the NWGLDE 

List, employ a magnetostrictive probe, and be certified at a leak rate of 0.1 

gph. 

The database for evaluation of the system included tank and pipeline leaks at sites 

with vapor recovery and blending dispensers. 

System is designed for use with pipelines equipped with mechanical or electronic line 

leak detectors to detect emergent catastrophic leaks in the pipelines. 

Tank systems used in this evaluation contained gasoline and diesel. 

Custom tank charts are generated for each tank system. 

Meter Drift analyses are performed during monitoring.

Warren Rogers Associates, Inc. Evaluator: Ken Wilcox Associates 

747 Aquidneck Avenue. Tel: (816) 443-2494 

Middletown, RI 02840 Date of Evaluation: 07/11/2003 

Tel: (800) 972-7472 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

432

Issue Date: November 22, 1995 

Revision Date: May 5, 2003 

Warren Rogers Associates, Inc. 

WRA Statistical Inventory Analysis, Version 5.1 

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE) 

Certification Leak rate of 0.1 gph with PD = 99.98% and PFA = 0.02%. 

"If a method meets the requirement for detecting a leak rate of 0.1 gph, it will meet 

the requirement for 0.2 gph.", according to "Standard Test Procedures for Evaluating 

Leak Detection Methods: Statistical Inventory Reconciliation Methods", EPA/530/UST90/007, June 1990, Section 7.2.3, page 30. 

Leak 

Threshold

0.05 gph. 

This leak threshold is for evaluation purposes only. 

A tank system should not be declared tight if the test result indicates a 

loss or gain that equals or exceeds the leak threshold calculated from the 

data set. This leak threshold may be different than the above leak threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor. 

Tank Capacity Maximum of 18,000 gallons. 

Data 

Requirement

Minimum of 30 days of product level and throughput data. 

Comments Not evaluated using manifolded tank systems. 

Of 41 data sets submitted for evaluation, all were analyzed with conclusive results. 

Median monthly throughput for tanks evaluated was 1000 gallons. 

Leak rates of 0.05, 0.1, and 0.20 gph were used in evaluation. 

A portion of data sets evaluated was supplied by vendor.

Warren Rogers Associates, Inc. Evaluator: Ken Wilcox Associates 

747 Aquidneck Ave. Tel: (816) 443-2494 

Middletown, RI 02840 Date of Evaluation: 12/18/90 

Tel: (800) 972-7472 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

433

Issue Date: February 17, 1998 

Revision Date: May 5, 2003 

Warren Rogers Associates, Inc. 

WRA Statistical Inventory Analysis, Version 5.2 

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE) 

Certification Leak rate of 0.1 gph with PD = 99.9% and PFA = 0.1% 

"If a method meets the requirement for detecting a leak rate of 0.1 gph, it will meet 

the requirement for 0.2 gph.", according to "Standard Test Procedures for Evaluating 

Leak Detection Methods: Statistical Inventory Reconciliation Methods", EPA/530/UST90/007, June 1990, Section 7.2.3, page 30. 

Leak 

Threshold

0.05 gph. 

This leak threshold is for evaluation purposes only. 

A tank system should not be declared tight if the test result indicates a 

loss or gain that equals or exceeds the leak threshold calculated from the 

data set. This leak threshold may be different than the above leak threshold.

Applicability Gasoline, diesel. 

Other more viscous liquids may be tested after consultation with the vendor. 

Tank Capacity Maximum of 36,000 gallons for single tank. 

Maximum of 36,000 gallons cumulative capacity for manifolded tank systems with no 

more than 3 tanks in system. 

Data 

Requirement

Minimum of 30 days of product level and throughput data. 

Comments 50% of data sets evaluated were from manifolded tanks systems. 

82 data sets were submitted for evaluation. 

All were analyzed with conclusive results. 

Median monthly throughput of tanks evaluated was 52,207 gallons. 

Median monthly throughput of separate manifolded tank system evaluation was 

14,944 gallons. Leak rates of 0.05, 0.10, and 0.20 gph were used in evaluation. 

All manifolded tank system data sets evaluated were supplied by evaluator. 

A portion of the data sets drawn from the WRA Statistical Inventory Analysis Version 

5.1 evaluation for tanks that were not manifolded, were provided by the vendor.

Warren Rogers Associates, Inc. Evaluator: Ken Wilcox Associates 

747 Aquidneck Ave. Tel : (816) 443-2494 

Middletown, RI 02840 Date of Evaluation: 12/08/97 

Tel: (800) 972-7472 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

434

Issue Date: November 22, 1995 

Revision Date: November 6, 1997 

Western Environmental Resources 

Model PLT-100R

LINE TIGHTNESS TEST METHOD 

Certification Leak rate of 0.1 gph with PD = 100% and PFA = 0%. 

Leak 

Threshold

0.05 gph. 

A pipeline system should not be declared tight if the test result indicates a loss that 

equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Specification System tests fiberglass and steel pipelines. 

Tests are conducted at 150% operating pressure. 

Mechanical line leak detector must be removed from pipeline for duration of test. 

Pipeline 

Capacity

Maximum of 80 gallons. 

Waiting Time None between delivery and testing. 

Minimum of 1 hour between dispensing and testing. 

Test Period Minimum of 30 minutes. Test data are acquired and recorded manually. 

Two tests with no time between tests are required before a leak can be declared. 

Calibration System must be checked annually and, if necessary, calibrated in accordance with 

manufacturer's instructions.

Western Environmental Resources Evaluator: Vista Research 

PO Box 37 Tel: (415) 966-1171 

Bakersfield, CA 93302 Date of Evaluation: 11/21/90 

Tel: (805) 326-0173 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

435

Issue Date: November 22, 1995 

Revision Date: November 6, 1997 

Western Environmental Resources 

AES System II 

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL) 

Certification Leak rate of 0.1 gph with PD = 97.7% and PFA = 2.3%. 

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 15,000 gallons. 

Tank must be minimum 100% full. 

Waiting time Between delivery and the beginning of test, waiting time is included in the waiting 

time after "topping off". Between "topping off" and beginning test, waiting time is 

computer-dictated by real-time analysis of level and temperature data. 

Total waiting time is approximately 4 to 12 hours. There must be no dispensing or 

delivery during waiting time. 

Test Period Minimum of 2 hours (two 1-hour tests). 

Test data are acquired and recorded by system’s computer. 

Leak rate is calculated from the last 1 hour, 30 minutes of test period data. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 5 temperature sensors. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a 

minimum net pressure of 2 psi at bottom of the tank during test. 

Calibration Level sensors must be calibrated before each test in accordance with manufacturer's 

instructions. 

Temperature sensor must be checked annually and, if necessary, calibrated in 

accordance with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems.

Western Environmental Resources Evaluator: Vista Research 

PO Box 37 Tel: (415) 966-1171 

Bakersfield, CA 93302 Date of Evaluation: 12/20/90 

Tel: (805) 326-1073 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

436

Issue Date: November 22, 1995 

Revision Date: November 6, 1997 

Western Environmental Resources 

AES System II (Large Tanks) 

VOLUMETRIC TIGHTNESS TEST METHOD (OVERFILL) 

Certification Leak rate of 0.1 gph with PD = 98.9% and PFA = 1.1%. 

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids with known coefficients of expansion and density may be tested after 

consultation with the manufacturer. 

Tank Capacity Maximum of 75,000 gallons. 

Tank must be minimum 100% full. 

Waiting Time Minimum of 24 hours after delivery. Between "topping off" and beginning test, waiting 

time is computer-dictated by real-time analysis of level and temperature data and 

must be minimum of 1 hour. 

There must be no dispensing or delivery during waiting time. 

Test Period Minimum of 4 hours. 

Test data are acquired and recorded by system’s computer. 

Leak rate is calculated from the last 3 hours of test period data. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a minimum of 12 thermistors. 

Groundwater Depth to groundwater in tank excavation backfill must be determined. 

If groundwater is above bottom of tank, product level must be adjusted to provide a 

minimum net pressure of 2 psi at bottom of the tank during test. 

Calibration Level sensors must be calibrated before each test in accordance with manufacturer's 

instructions. 

Thermistors must be checked annually and, if necessary, calibrated in accordance 

with manufacturer's instructions. 

Comments Not evaluated using manifolded tank systems.

Western Environmental Resources Evaluator: Ken Wilcox Associates 

PO Box 37 Tel: (816) 443-2494 

Bakersfield, CA 93302 Date of Evaluation: 02/28/92 

Tel: (805) 326-0173 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

437

Issue Date: October 27, 2004 

Revision Date: May 2, 2006

Western Fiberglass, Inc. 

Co-Flow Hydraulic Interstitial Monitoring System

CONTINUOUS INTERSTITIAL MONITORING METHOD (LIQUID FILLED)

Certification: 

Certified as a continuous, liquid-filled interstitial space leak detection system for use only with Western Fiberglass, Inc., doublewalled/coaxial flexible pipelines. 

Maximum length is 200 feet. 

No restrictions on pipeline diameter. 

Operating Principle:

Similar to the methodology that has been applied to liquid-filled interstitial double-walled tanks. 

Propylene glycol is used to fill the interstice. 

Two reservoirs are used to contain the liquid, one at each end of the system. The reservoir at one end is closed to the atmosphere, 

includes a valve that is used to fill the system, and is designed to operate at a lower elevation than the other reservoir. The 

reservoir at the other end is open at the top and contains a dual-point level sensor.

The dual-point level sensor system monitors the liquid level in the interstitial reservoir and provides an alarm if the liquid level is 

either too high (ingress of liquid) or too low (egress of liquid). 

The method must be used with a dual-point sensor system that will properly fit into the reservoir, is compatible with the interstitial 

liquid, and is on the NWGLDE list. 

Sensors can be used to shut down the turbine system and/or alert the operator that a potential problem exists. 

Alarm Conditions: 

Leak Rate 

Time to Alarm* (hours) for 5-Inch Sensor 

Spacing as a Function of Leak Rate for 

Various Reservoir Diameters (in) 

Time to Alarm* (hours) for 3-Inch Sensor 

Spacing as a Function of Leak Rate for 

Various Reservoir Diameters (in) 

(gph) 3.75 3 2.87 2 1.5 3.75 3 2.87 2 1.5 

0.05 4.8 3.0 2.8 1.4 0.76 2.9 1.8 1.7 0.8 0.5 

0.10 2.4 1.5 1.4 0.68 0.38 1.4 0.91 0.84 0.41 0.23 

0.20 1.2 0.76 0.70 0.34 0.19 0.71 0.46 0.42 0.20 0.11 

*Time to alarm is based on evaluations conducted with 100% glycol solution and a leak (liquid egress) 190 feet from the highest

reservoir. Leaks closer to the highest elevation reservoir, and the use of a diluted glycol solution, will shorten alarm times. Both 

theoretical calculations and laboratory measurements confirm that dilution of the propylene glycol used in the interstice of the WFG 

system will produce a significant reduction in the alarm time. This system has not been evaluated for locations with temperatures 

outside the range of 32 to 100 degrees Fahrenheit. 

*Time to alarm for a catastrophic primary pipe failure with a pressure of 40 psi is 20 seconds at a distance of 10 feet from the 

reservoir and 84 minutes at a distance of 190 feet. This is based on a 5-inch spacing of the float sensors.

Calibration: 

Equipment requires no calibration other than to insure the upper reservoir is half full. 

The electronics must be calibrated and maintained in accordance with the sensor/monitoring equipment instructions. 

Comments:

Pipeline fittings with interstitial communication tubing must only be located in sumps or pump pits – direct burial is not permitted. 

The liquid level in the reservoir must be at least 20 inches above the water table. 

The interstice must be filled from the low point in the pipeline to minimize trapped air. 

The evaluation was conducted in a Western Fiberglass, Inc., double-walled/coaxial flexible pipeline with an interstitial capacity of 

1.64 gallons, an inside diameter of 1.5 inches, and a length of 200 feet. 

Installers must be certified by both the piping and sensor manufacturer. 

Third-party evaluator certifies that this method performs equally well on the present version (manufactured beginning March, 2006) 

as the previous version of Western Fiberglass, Inc., double-walled/coaxial flexible pipeline. 

Western Fiberglass, Inc. Evaluator: Ken Wilcox Associates 

1555 Copperhill Parkway Tel: (816) 443-2494 

Santa Rosa, CA 95403 Date of Evaluation: 08/09/04 

Tel: (707) 523-2050 

E-Mail: sales@westernfg.com 

URL: www.westernfg.com 
Issue Date: August 30, 2007 

Western Fiberglass, Inc. 

Co-Flow Hydraulic Interstitial Monitoring System 

Propylene Glycol Filled Pressurized Interstitial Space

CONTINUOUS INTERSTITIAL MONITORING METHOD (LIQUID FILLED)

Certification: 

Certified as a continuous, liquid-filled interstitial space leak detection system for use only with Western Fiberglass, Inc., doublewalled/coaxial flexible pipelines. 

Maximum length is 200 feet. 

No restrictions on pipeline diameter. 

Operating Principle:

Similar to the methodology that has been applied to liquid-filled interstitial double-walled tanks. 

A pressurized reservoir is attached to the piping interstice and filled with propylene glycol. 

A pressurized cylinder is used to maintain pressure in the reservoir. Pressure is normally adjusted to 50 psig for a typical service 

station. The cylinder contains nitrogen or air and a pressure switch to monitor pressure in the reservoir (low pressure alarm is 

typically set at 35 psig). 

The reservoir contains a dual-point level sensor that monitors the liquid level and provides an alarm if the liquid level is either too 

high (ingress of liquid) or too low (egress of liquid).

Once the liquid leaks out of the system, the leak becomes an air leak. Pressure drops are rapid and a pressure loss alarm is 

produced. 

The method must be used with a dual-point sensor system that will properly fit into the reservoir, is compatible with the interstitial 

liquid, and is on the NWGLDE list. 

Sensors can be used to shut down the turbine system and/or alert the operator that a potential problem exists. 

Alarm Conditions: 

*The liquid level required to alarm is controlled by the level of liquid in the reservoir. This level is determined by the operator when 

filling the reservoir. The reservoir is filled to a level where the dual point sensor is floating midway between the low and high level 

alarm. 

Average Liquid Level Required to Alarm* Time to Alarm in Hours, as a Function of Leak Rate 

Lower Level Alarm (in) High Level Alarm (in) Leak Rate (gph) For 3 inch Dia Reservoir (hours) 

3.2 15.1 3.0 0.1 

0.2 1.3 

0.1 2.6 

0.005 51.5 

Previously conducted theoretical calculations and laboratory measurements confirm that dilution of the propylene glycol used in the 

interstice of the WFG system will produce a significant reduction in the alarm time. The use of diluted propylene glycol (from100% 

to 50%) will reduce the alarm time by a factor of approximately 7.2. For example, an alarm time of 80 minutes would be reduced

to around 11 minutes. 

Calibration: 

Equipment requires no calibration other than to ensure the reservoir is at a level where the dual point sensor is floating midway 

between the low and high level alarm. 

The electronics must be calibrated and maintained in accordance with the sensor/monitoring equipment instructions. 

Comments: 

Pipeline fittings with interstitial communication tubing must only be located in sumps or pump pits – direct burial is not permitted. 

The interstice must be filled from the low point in the pipeline to minimize trapped air. 

The evaluation was conducted in a Western Fiberglass, Inc. double-walled/coaxial flexible pipeline with an interstitial capacity of 

1.64 gallons, an inside diameter of 1.5 inches, and a length of 200 feet. 

Installers must be certified by both the piping and sensor manufacturer. 

The testing was conducted on the “new” double-walled/coaxial flexible pipe (manufactured beginning March, 2006). It can be 

used in place of the “old” double-walled/coaxial flexible pipe where the pressure is near ambient. 

Evaluation was conducted with an interstitial pressure of 50 psig. 

Western Fiberglass, Inc. Evaluator: Ken Wilcox Associates 

1555 Copperhill Parkway Tel: (816) 443-2494 

Santa Rosa, CA 95403 Date of Evaluation: 02/23/07 

Tel: (707) 523-2050 

E-Mail: sales@westernfg.com 

URL: www.westernfg.com 

Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

438
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

439

Issue Date: November 2, 2007 

Western Fiberglass, Inc. 

Liquid-Filled Reservoir for Double-Wall Sumps 

with Liquid Sensor Models WF-3 and WF-750

CONTINUOUS INTERSTITIAL MONITORING METHOD (LIQUID FILLED)

Certification: 

Certified as a continuous, liquid-filled interstitial space leak detection system for use only with Western 

Fiberglass, Inc., double-walled sumps or under dispenser containment sumps. 

Operating Principle:

Hydrostatic monitoring using single-level float switch. Methodology is similar to that which has been applied to 

liquid-filled interstitial double-walled tanks. 

Propylene glycol is used to fill the interstice of Western Fiberglass’ double-walled sumps or under dispenser 

containment sumps. 

An interstitial liquid reservoir is connected to a port at the highest point of the double-walled space. 

Single-point liquid level sensor, model WF-3 or WF-750, monitors the liquid in the interstitial reservoir and 

provides an alarm if the liquid drops too low (egress of liquid). 

Alarm Conditions: 

0.05 gph Leak, Plastic 

 Reservoir with WF-3 Sensor 

0.05 gph Leak, Stainless Steel 

Reservoir with WF-750 Sensor 

Normal 

Liquid Volume 

Minimum 

Liquid Volume 

Normal 

Liquid Volume 

Minimum 

Liquid Volume 

* Volume of Liquid 

Lost at Alarm (ml) 41.8 2.5 74.3 16.7 

Time to Alarm (min) < 1 < 1 < 1 < 1 

Time to Reset (min) < 1 < 1 < 1 < 1 

* Volume of liquid lost to alarm depends on the amount of liquid in the reservoir. This amount is determined 

by the operator when filling the reservoir. This amount needs to be sufficient to prevent false alarms from 

occurring due to the normal fluctuations in the reservoir which result from temperature and pressure variations 

in the sump. Minimum alarm volumes were obtained by filling the reservoir to the lowest possible level to reset 

the alarm. While this condition provides the shortest response time, it is also subject to the highest false 

alarm rate. 

Calibration: 

Reservoir requires no calibration other than to insure the upper reservoir is half full. 

Sensors must be calibrated and maintained in accordance with manufacturer’s instructions. 

Comments: 

Fluid reservoir volumes and connection tightness between reservoir and sump should be inspected annually.

Liquid level in the stainless steel reservoir should be visible in the sight glass. 

Liquid level in the plastic reservoir should be approximately one inch above the float switch. 

Western Fiberglass WF-3 and WF-750 sensors are for use only in specific Western Fiberglass method 

applications, as listed. 

Western Fiberglass, Inc. Evaluator: Ken Wilcox Associates 

1555 Copperhill Parkway Tel: (816) 443-2494 

Santa Rosa, CA 95403 Date of Evaluation: 12/20/2006 

Tel: (707) 523-2050 

E-Mail: sales@westernfg.com 

URL: www.westernfg.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

440

Issue Date: September 9, 2003

World Telemetry, Inc. 

Data Link ATGS v2.6-h 

(Magnetostrictive Probe) 

AUTOMATIC TANK GAUGING METHOD

Certification Leak rate of 0.2 gph with PD = 97.2% and PFA = 2.8% 

Leak 

Threshold

0.1 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain that equals or 

exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Other liquids may be tested after consultation with the manufacturer. 

Tank Capacity Maximum of 20,000 gallons. 

Tanks greater than 90% full may not be tested. 

Product level must be at least 2 inches above the lowest temperature sensor. 

Minimum product level required is based on tank diameter as follows: 

48" dia/min 10.4"; 

64" dia/min 13"; 

96" dia/min 18.4"; 

120" dia/min 22.4"; 

144" dia/min 26.4". 

For other tank diameters, consult manufacturer. 

Waiting Time Minimum of 8 hours between delivery and testing. 

There must be no delivery during waiting time. 

Test Period Minimum of 8 hours. 

There must be no dispensing or delivery during test. 

Temperature Average for product is determined by a magnetostrictive probe containing 5 temperature sensors. 

Sensors located above the product surface are not used in data analysis. 

Water Sensor Must be used to detect water ingress. 

Minimum detectable water level in the tank is 0.81 inch. 

Minimum detectable change in water level is 0.011 inch. 

Calibration Probe must be checked and, if necessary, calibrated in accordance with manufacturer’s 

instructions. 

Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when 

there is a probe used in each tank and the siphon is broken during testing. 

System consists of a magnetostrictive probe, a micro processing unit, and a modem that provides 

a data link to the home office. 

Tests only portion of tank containing product. 

As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 

Consistent testing at low levels could allow a leak to remain undetected. 

EPA leak detection regulations require testing of the portion of the tank system which routinely 

contains product. 

World Telemetry, Inc. Ken Wilcox Associates 

6914 South Yorktown, Suite 210 Tel: (816) 443-2494 

Tulsa, OK 74136 Date of Evaluation: 07/31/03 

Tel: (918) 494-0672 

E-mail: techsupport@worldtelemetry.com 

URL: www.worldtelemetry.com 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

441

Issue Date: October 19, 2007

Xerxes Corp. 

Xerxes Trucheck Continuous Leak Detection System 

CONTINUOUS INTERSTIITIAL MONITORING METHOD (LIQUID FILLED) 

Certification: Certified as a continuous, brine-filled interstitial space leak detection system for tanks 

up to 30,000 gallons manufactured by Xerxes, Corp. 

Operating Principle: A Fluid reservoir is attached to the top of the tank and is open to the interstice 

through the bottom and is filled with a brine solution. The reservoir is equipped with an electronic 

probe to provide for low level and high level alarms. 

Alarm Conditions: The brine level is set at 5 inches above the low level alarm. The low level alarm will 

sound for reservoirs of 18, 24 or 36 inches diameter in 5, 9 and 19 days respectively. Under average 

conditions, leaks of 0.009, 0.015 or 0.032 gal/hr will trigger the low level alarm in 30 days for the same 

three reservoirs, respectively. If the brine level is originally higher than 5 inches above the low-level 

alarm point, the alarm time will be proportionally longer and the leak detection value in thirty days will be 

proportionally longer. 

Manufacturer’s Specifications:

Fluid in reservoir must be filled to proper level. 

Comments: 

The method must be used with a dual-point sensor system that will properly fit into the reservoir, is 

compatible with the interstitial liquid, and is on the NWGLDE list. 

Xerxes Corp. Evaluator: Robert Plunkett, Ph.D. 

7901 Xerxes Ave. Tel: (612) 338-0945 

Minneapolis, MN 55431 Dates of Evaluation: 01/07/93, 03/28/05 

Tel: (952) 887-1890 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

442

Issue Date: November 22, 1995 

Revision Date: September 11, 1998 

Xerxes Corp. 

Xerxes Trucheck Hydrostatic Monitoring System 

INTERSTITIAL TANK TIGHTNESS TEST METHOD 

Certification Leak rate of 0.1 gph with PD = 99% and PFA = 1%. 

Leak 

Threshold

0.05 gph. 

A tank system should not be declared tight if the test result indicates a loss or gain 

that equals or exceeds this threshold. 

Applicability Gasoline, diesel, aviation fuel, fuel oil #4. 

Tank Capacity Maximum of 30,000 gallons. 

Tank must be between 0 to 100% full. 

Waiting Time None between delivery and testing. 

Test Period Minimum of 10 hours. 

Groundwater Depth to groundwater in tank excavation backfill must be determined before and after 

test. 

When groundwater level is above bottom of tank but below top, test should be 

repeated if groundwater level increases by more than 7 inches during test. 

When groundwater level is above tank, test should be repeated if groundwater level 

increases by more than 5 inches during test.

Xerxes Corp. Evaluator: Robert Plunkett, Ph.D. 

7901 Xerxes Ave. Tel: (612) 338-0945 

Minneapolis, MN 55431 Date of Evaluation: 01/07/93 

Tel: (952) 887-1890 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

443

PART III 

ACCEPTABLE TEST PROTOCOLS

ALPHABETICAL BY TEST METHOD, 

THEN BY PROTOCOL DATE 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

444

Revision Date: December 4, 2009 

Aboveground Storage Tank Leak Detection Method 

• “Alternative Test Procedures for Evaluating Leak Detection Methods: Mass-Based Leak Detection 

Systems for Aboveground Storage Tanks”, Ken Wilcox Associates, October 20, 2004.

• “Alternative Test Procedures for Evaluating Leak Detection Methods: Volumetric Leak Detection 

Systems for Aboveground Storage Tanks,” Ken Wilcox Associates, December, 2009.

Automatic Electronic Line Leak Detector 

• “Standard Test Procedures for Evaluating Leak Detection Methods: Pipeline Leak Detection 

Systems”, EPA/530/UST-90/010, September 1990.

Automatic Mechanical Line Leak Detector 

• “Standard Test Procedures for Evaluating Leak Detection Methods: Pipeline Leak Detection 

Systems”, EPA/530/UST-90/010, September 1990.

Automatic Tank Gauging Method

• “Standard Test Procedures for Evaluating Leak Detection Methods: Automatic Tank Gauging 

Systems”, EPA/530/UST-90/006, March 1990. 

• “Test Procedures for Comparison of Different ATGS Probes”, Ken Wilcox Associates, March 27, 

2000. (With acceptable modification, this method is also applicable to comparisons of different 

ATG controllers.) 

• “ATG/CITLDS Water Detection Testing in Ethanol or Blends Greater Than 10% Ethanol, 

”NWGLDE addendum to “Standard Test Procedures for Evaluating Leak Detection Methods: 

Automatic Tank Gauging Systems”, EPA/530/UST-90/006, March 1990. Developed under 

coordination by the ATG team of the National Work Group on Leak Detection Evaluations, 

December 2007. 

• Amendment to EPA ATG and Non Volumetric TTT Protocols for Water Sensor Testing,

Jairus D. Flora Jr. Ph.D., December 17, 2008.

Bulk Underground Storage Tank Leak Detection Method (50,000 gallons or greater) 

• “Alternative Test Procedures for Evaluating Leak Detection Methods: Mass-based and Volumetric 

Leak Detection Systems for Bulk Field-constructed Tanks”, Ken Wilcox Associates, November 

2000.

• “Alternative Test Procedures for Evaluating Leak Detection Methods: Evaluation of Bulk Fieldconstructed Tanks”, Ken Wilcox Associates, February 1996 (Evaluations prior to November 2000 

only). 

• “Protocol for Certification of the ASTTest Mass Balance Leak Detection System”, ASTTest 

Systems Inc., May 1997 (Evaluations prior to November 2000 only). 

Continuous In-Tank Leak Detection Method 

• “Evaluation Protocol for Continuous In-Tank Leak Detection Systems”, Midwest Research 

Institute, April 7, 1995. 

• “Evaluation Protocol for Continuous In-Tank Leak Detection Systems”, Jairus D. Flora, Jr. Ph.D., 

January 7, 2000. 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

445

Revision Date: April 22, 2009 

Continuous In-Tank Leak Detection Method – Continued 

• “ATG/CITLDS Water Detection Testing in Ethanol or Blends Greater Than 10% Ethanol, 

”NWGLDE addendum to “Standard Test Procedures for Evaluating Leak Detection Methods: 

Evaluation Protocol for Continuous In-Tank Leak Detection Systems” by Jairus D. Flora, Jr. Ph.D., 

January 7, 2000. Developed under coordination by the ATG team of the National Work Group on 

Leak Detection Evaluations, December 2007.

• “Alternative Test Procedures for Evaluating Leak Detection Methods: Mass-Based Leak Detection 

Systems for Aboveground Storage Tanks”, Ken Wilcox Associates, October 20, 2004. 

• Amendment to EPA ATG and Non Volumetric TTT Protocols for Water Sensor Testing,

Jairus D. Flora Jr. Ph.D., December 17, 2008.

Continuous Interstitial Line Monitoring Method (Pressure/Vacuum) 

• “Alternative Test Procedures for Evaluating Leak Detection Methods: Evaluation of Vacuum 

Interstitial Monitoring Methods,” Ken Wilcox Associates, September 1996. 

• “Draft European Standard prEN 13160-32”, Leak Detection Systems - Parts 1-7 2, Version 2.0, 

European Committee for Standardization, August 2001. 

• “Evaluation Protocol for Vacuum-Wrapped Pressurized Portions of a Fuel Containment and 

Dispensing System”, Revision 3A, Jairus D. Flora, Jr., Ph.D., December 15, 2006.

 

Continuous Interstitial Line Monitoring Method (Pressure/Vacuum) - Continued

• “Final European Standard EN 13160-2”, Leak Detection Systems - Part 2: Pressure and Vacuum 

Systems (Note: Acceptance also applies to sections of the other 6 parts of EN 13160 which are 

referenced within Part 2.), European Committee for Standardization, May 2003.

Continuous Interstitial Monitoring Method (Liquid Filled) 

• “Test Procedure for the Evaluation of Double-Wall Pipe with Liquid Filled Interstice for Loss 

Prevention”, Ken Wilcox Associates, May 21, 2004. 

• “Alternative Test Procedures for Evaluating Leak Detection Methods: Evaluation of Liquid Level 

Sensors,” Ken Wilcox Associates, September 1996. 

• “Standard Test Procedures for Evaluating Leak Detection Methods: Automatic Tank Gauging 

Systems”, EPA/530/UST-90/006, March 1990. 

• “Standard Test Procedures for Evaluating Leak Detection Methods: Non-Volumetric Tank 

Tightness Testing Methods”, EPA/530/UST-90/005, March 1990. 

Continuous Interstitial Tank System Monitoring Method (Pressure/Vacuum) 

• “Alternative Test Procedures for Evaluating Leak Detection Methods: Evaluation of Vacuum 

Interstitial Monitoring Methods,” Ken Wilcox Associates, September 1996. 

• “Draft European Standard prEN 13160-2”, Leak Detection Systems - Part 2, Version 2.0, 

European Committee for Standardization, August 2001. 

• “Final European Standard EN 13160-2”, Leak Detection Systems - Part 2: Pressure and Vacuum 

Systems (Note: Acceptance also applies to sections of the other 6 parts of EN 13160 which are 

referenced within Part 2.), European Committee for Standardization, May 2003. 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

446

Revision Date: November 10, 2010 

Continuous Pressurized Piping Leak Detection Method

• “Evaluation Protocol for Continuous Pressurized Piping Leak Detection Systems Revision 1.1,” 

Jairus D. Flora, Jr., Ph.D., March 2009.

Interstitial Tank Tightness Test Method 

• “Standard Test Procedures for Evaluating Leak Detection Methods: Volumetric Tank Tightness 

Testing Methods”, EPA/530/UST-90/004, March 1990.

Interstitial Product Detectors (Liquid-Phase) 

• “Standard Test Procedures for Evaluating Leak Detection Methods: Liquid-Phase Out-of-Tank 

Product Detectors”, EPA/530/UST-90/009, March 1990. 

• “Development of Procedures to Assess the Performance of External Leak Detection Devices: 

Liquid-Phase ASTM-Formatted Methods - Revised Draft to Include JP-4 Jet Fuel”, Radian 

Corporation, June 29, 1990. 

• “Test Procedures for Third-party Evaluation of Leak Detection Methods: Cable Sensor Liquid 

Contact Leak Detection Systems”, Carnegie Mellon Research Institute, November 11, 1991. 

• “Test Procedures for Third-party Evaluation of Leak Detection Methods: Point Sensor Liquid 

Contact Leak Detection Systems”, Carnegie Mellon Research Institute - Advanced Devices and 

Materials Group, November 11, 1991. 

• “Alternative Test Procedures for Evaluating Leak Detection Methods: Evaluation of Liquid Level 

Sensors,” Ken Wilcox Associates, September 1996.

Large Diameter Line Leak Detection Method (6 inches diameter or above) 

• “Modified Third-party Testing Protocol for Large Pipeline Leak Detection”, EFA Technologies, Inc., 

August 1995. 

• "Proposed Protocol for the Performance Evaluation of the MALT and MALTtm Plus", Ken Wilcox 

Associates, February 9, 1996. 

• “Standard Test Procedures for Evaluating Leak Detection Methods: Pipeline Leak Detection 

Systems”, EPA/530/UST-90/010, September 1990. 

Line Tightness Test Method

• “Standard Test Procedures for Evaluating Leak Detection Methods: Pipeline Leak Detection 

Systems”, EPA/530/UST-90/010, September 1990.

Non-Volumetric Tank Tightness Test Method (Tracer, Ullage, Vacuum)

• “Standard Test Procedures for Evaluating Leak Detection Methods: Non-Volumetric Tank 

Tightness Testing Methods”, EPA/530/UST-90/005, March 1990. 

• Amendment to EPA ATG and Non Volumetric TTT Protocols for Water Sensor Testing,

Jairus D. Flora Jr. Ph.D., December 17, 2008.

Out-of-Tank Product Detectors (Liquid-Phase) 

• “Standard Test Procedures for Evaluating Leak Detection Methods: Liquid-Phase Out-of-Tank 

Product Detectors”, EPA/530/UST-90/009, March 1990.
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

447

Revision Date: December 8, 2004 

Out-of-Tank Product Detectors (Liquid-Phase) – Continued 

• “Development of Procedures to Assess the Performance of External Leak Detection Devices: 

Liquid-Phase ASTM-Formatted Methods - Revised Draft to Include JP-4 Jet Fuel”, Radian 

Corporation, June 29, 1990. 

• “Test Procedures for Third-party Evaluation of Leak Detection Methods: Cable Sensor Liquid 

Contact Leak Detection Systems”, Carnegie Mellon Research Institute, November 11, 1991. 

• “Test Procedures for Third-party Evaluation of Leak Detection Methods: Point Sensor Liquid 

Contact Leak Detection Systems”, Carnegie Mellon Research Institute - Advanced Devices and 

Materials Group, November 11, 1991. 

Out-of-Tank Product Detector (Vapor-Phase) 

• “Standard Test Procedures for Evaluating Leak Detection Methods: Vapor-Phase Out-of-Tank 

Product Detectors”, EPA/530/UST-90/008, March 1990. 

• “Development of Procedures to Assess the Performance of External Leak Detection Devices: 

Vapor-Phase ASTM-Formatted Methods”, Radian Corporation, June 6, 1990. 

• “Development of Procedures to Assess the Performance of External Leak Detection Devices: 

Vapor-Phase ASTM-Formatted Methods”, Radian Corporation, June 29, 1990. 

Statistical Inventory Reconciliation Test Method (Qualitative, Quantitative) 

• “Standard Test Procedures for Evaluating Leak Detection Methods: Statistical Inventory 

Reconciliation Methods”, EPA/530/UST-90/007, June 1990. 

• “Protocol for Determining Applicability of a SIR Method for Manifolded Tanks and Determining 

Size Limitation”, Developed under coordination by the SIR team of the National Work Group on 

Leak Detection Evaluations, November 1996. 

Volumetric Tank Tightness Test Method (Overfill, Underfill) 

• “Standard Test Procedures for Evaluating Leak Detection Methods: Volumetric Tank Tightness 

Testing Methods”, EPA/530/UST-90/004, March 1990. 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

448

Revision Date: October 4, 2010 

APPENDIX

GLOSSARY OF TERMS

Accuracy: 

The degree to which the measured leak rate agrees with the induced leak rate on the average. If a 

system is accurate, it has a very small or zero bias. 

Activated: 

Refers to the state of a qualitative detector's response when indicating the presence of product. 

Alternative Fuel: 

A fuel or petroleum fuel blend containing any amount of non-petroleum component, including but not 

limited to ethanol, methanol, or animal/vegetable oil, with the exception of petrodiesel blends containing 

no more than 5% biodiesel. 

Bias: 

An indication of whether the device’s measured leak rate consistently overestimates (positive bias) or 

underestimates (negative bias) the actual induced leak rate. 

Bulk Modulus (of Elasticity): 

The ratio of hydrostatic pressure to the relative change it produces in volume. 

Bulk Underground Storage Tank: 

Generally applies to underground storage tanks 50,000 gallons or greater. 

Continual Reconciliation: 

Combines product level and temperature monitoring from the tank with data from dispensing meters. 

Data from delivery records may also be included. In addition, it may address leaks or unexplained losses 

of product from the tank vessel, the pressurized lines, or a combination to monitor the tank and line 

system. It allows a combination of monitoring data from a static tank and inventory data from a dynamic 

tank to be combined in monitoring the system for a leak. It is also designed to meet the monthly 

monitoring performance standard of detecting a leak of 0.20 gallon per hour or 150 gallons per month 

with 95% probability and 5% false alarm. 

Continuous Automatic Tank Gauging: 

Uses an automatic tank gauge probe to collect data continually and combines this with software to 

identify time intervals when there is no activity in the tank and the data are stable enough for analysis. 

An algorithm then combines data from a number of such periods until there is enough evidence to make 

a determination about the leak status of the tank. It functions like an automatic tank gauge except that 

it does not require that the tank be taken out of service for a set period of several hours whenever a test 

is to be done. Instead, it uses data from shorter stable time periods and combines the results to 

estimate a leak rate and perform a test. It may default to a standard or shut down automatic tank 

gauge test (requiring the tank to be out of service for a few hours) at the end of the month if sufficient 

good quality data have not been obtained over the month. It is designed to meet the monthly 

monitoring performance standard of detecting a leak of 0.20 gallon per hour or 150 gallons per month 

with 95% probability of detection (PD) and 5% probability of false alarm (PFA). It tests the tank vessel 

itself. 

Continuous Detector: 

Detectors that operate continuously are always present and are never turned off. 
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performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

449

Revision Date: October 26, 2010 

GLOSSARY OF TERMS (Continued) 

Continuous In-Tank Leak Detection Method: 

Designed to allow the tank to operate continuously or nearly continuously without interruption for leak 

detection tests. Typically, sensors are permanently installed in the tank, combined with a microprocessor 

in a console. In addition, they may be connected to the dispensing meters, allowing for automatic 

recording and use of dispensing data. There may also be a provision for direct input of data from a 

keyboard or pad, to allow for entry of delivery receipts. 

There are three different types of Continuous In-Tank Leak Detection: Continuous Automatic Tank 

Gauging (See above definition), Continual Reconciliation (See above definition), and Automatic Monthly 

Inventory Control. 

Continuous Monitoring: 

Routinely performing leak detection on an uninterrupted basis. 

Detection time: 

The sum of rise time and lag time. 

Diesel or Diesel Fuel: 

Middle petroleum distillate fuel that may contain up to 5% biodiesel and meets the specifications of ASTM 

standard D975.

Fall time: 

The elapsed time after a detector has responded to a test hydrocarbon and is removed and has 

recovered to 95% of its original baseline level or there is no detectable signal output. 

False Alarm: 

Declaring a tank to be leaking when in fact it is tight. 

Gasohol: 

A blend of finished motor gasoline containing alcohol (generally ethanol but sometimes methanol) at a 

concentration between 5.7 percent and nominal 10 percent by volume; also referred to as "E 10" when 

the ethanol component is a nominal 10% of the blend.

Groundwater: 

Water table or water within the excavation around a tank. 

Independent Third-Party Evaluator: 

Consulting firms, test laboratories, not-for-profit research organizations, or educational institutions; with 

no organizational conflict of interest. 

Induced Leak Rate: 

The actual leak rate, in gallons per hour (gph), used during the evaluation against which the results from 

a given test device will be compared. 

Intermittent Detector: 

Detectors that monitor on a regular basis. An intermittent detector may be a hand held device that is 

portable or a permanently installed device that is used to periodically test for the presence of product. 

Large Diameter Pipeline: 

Generally, a pipeline that has a diameter of 6 inches and above. 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

450

Revision Date: January 11, 2001 

GLOSSARY OF TERMS (Continued)

Lag Time: 

The elapsed time from the detector's first contact with test product to the first detectable signal. 

Leak threshold: 

The measured leak rate at which the system detects the tank to be leaking. This leak rate will always be 

less than or equal to the leak rate requirement for the various release detection methods given in 40 CFR 

§ 280 Subpart D-Release Detection. (Please note that some states and other regulatory authorities may 

have different requirements). The minimum leak threshold for declaring a leak is experimentally 

determined from the results of the evaluation of the release detection system.

Lower Detection Limit: 

The smallest liquid concentration or level that a detector can reliably detect (PD > 95%, PFA < 5%).

Manifolded tank systems: 

Tanks connected by piping that allow the tank system to function as a single tank. A typical manifolded 

tank system usually consists of two tanks connected by a siphon tube that permits the product in the 

tanks to be at the same level while product is being pumped out of only 1 tank. 

Minimum Detectable Leak Rate: 

The leak rate that can be detected with a Probability of Detection (PD) of 95% and a Probability of False 

Alarm (PFA) of 5%. The minimum threshold is calculated setting the PFA at 5%. For a PD of 95%, the 

leak rate is then equal to twice the threshold that gives a PFA of 5% assuming the bias is not significant. 

Measured Leak Rate: 

A positive number in gallons per hour (gph) measured by test device that indicates the amount of 

product leaking out of the tank system. A negative number would indicate that something was being 

added to the tank. The performance of a system is based on how well the measured leak rate compares 

to the actual induced leak rate.

MER: 

The Maximum Effective Range, the longest length of sensor cables and/or jumper cables that can be 

connected to form a leak detection network. 

N/A: 

Not Applicable 

N/D: 

Not Determined 

N/R: 

No Response 

Net Pressure: 

In this document this term refers to a pressure difference between the pressure in the tank and the 

pressure related to the groundwater. If the net pressure is positive, the pressure in the tank is greater 

than that due to groundwater. If net pressure is negative, the pressure in the tank is less than that due 

to groundwater. 

Nominal Leak Rate: 
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performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

451

The set or target leak rate to be achieved as closely as possible during the evaluation of a leak detection 

system. It is a positive number expressed in gallons per hour (gph). 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

452

Revision Date: August 23, 1999 

GLOSSARY OF TERMS (Continued) 

Precision: 

The degree of agreement of repeated measurements of the same parameter. Precision estimates reflect 

random error and are not affected by bias. 

Pressure: 

In this document this term refers to a pressure which is at or above atmospheric. Any pressure reading 

at or above atmospheric is listed as positive; any pressure reading less than atmospheric (vacuum) is 

listed as negative. 

Probability of Detection (PD): 

The probability of detecting a leak of a given size usually expressed as a percentage. 

Probability of False Alarm (PFA): 

The probability of declaring a tank to be leaking when it is tight usually expressed as a percentage. 

 

Probe: 

A component of a detection system that must come into contact with product before product can be 

declared or measured. 

Product Activation Height: 

The minimum height of liquid required to cause sensor activation (this value does not have to meet the 

PD > 95%, PFA < 5% criteria). 

Qualitative Responses: 

The type of detector response that indicates only the presence or absence of product without 

determining the specific product concentration or thickness.

Quantitative Response: 

A type of detector response that quantifies the concentration or thickness of product present. 

Relative Accuracy: 

A function of systematic error, or bias, and random error, or precision. Smaller values indicate better 

accuracy. See entry for “Accuracy.” 

Resolution: 

The smallest change in the quantity being measured which the measurement system is capable of 

detecting. 

Response Time: 

A general term that refers to the more specific terms of lag time, rise time, and fall time. 

Rise Time: 

The elapsed time from a detector's first detectable signal in response to the presence of product to an 

output that is 95% of full scale for a quantitative detector or activated for a qualitative detector. 

Statistical Inventory Reconciliation (SIR), In-House System: 

Data gathered and input by owner or operator. System does analysis. If analysis presents problems, 

technical support and analysis are available from vendor or vendor representative. 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

performance of the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and 

regulations. Please refer to complete “DISCLAIMER” on page ii of this list. 

453

Revision Date: November 3, 2005 

GLOSSARY OF TERMS (Continued) 

Statistical Inventory Reconciliation (SIR), Stand Alone System: 

No human interface required. Data gathered and analyzed automatically without owner/operator input. 

Specificity: 

Specificity applies to vapor and liquid sensors and lists products or components of products that these 

sensors can detect. Specificity for quantitative sensors is the ratio of sensor output, or measured 

concentration, to the actual concentration of hydrocarbon test gas expressed as a percentage. Specificity 

for qualitative sensors is reported as activated if the sensor responds within 24 hours. Otherwise, 

specificity is reported as inactivated. 

Throughput: 

The volume of product dispensed from a tank system in a month.

Total Pressure: 

In this document this term equals the sum of the pressure in ullage space and the pressure due to 

product head.

Probability of False Alarm (PFA): 

The probability of declaring a tank to be leaking when it is tight usually expressed as a percentage 

Ullage: 

The un-wetted portion of the tank, i.e. that portion of the tank not in contact with product. 

Vacuum: 

In this document this term refers to any pressure that is less than atmospheric.