1

8th Edition Upgrade Package

for the Upgrade of Existing 8th Editions of the

"List of Leak Detection Evaluations for UST Systems"

to the 9th Edition

The following document contains new and revised pages from the 9th edition of 

the List of Leak Detection Evaluations for Underground Storage Tank (UST) 

Systems. The purpose of this document is to allow you to upgrade your 8th 

edition List to the 9th edition List without having to replace the entire List.

INSTRUCTIONS

To update the 8th edition of the List, first replace all pages from the cover letters 

through "Part I" of the List with the new pages included in this document. Unlike 

the complete List, this document is formatted for one sided instead of two sided 

copying for ease of updating the 8th edition. Therefore, the updated List will 

have all one sided copies up to "Part II" of the List.

Next, feed the new and existing pages into the 8th edition List beginning with 

"Part II". Because these pages are formatted for one sided copying and the 8th 

edition is formatted for two sided copying, be careful not to eliminate a page that 

is on the front or the back side of the sheet and has not been superseded. We 

suggest that the page that has been superseded be crossed out so that it is not 

confused with the replacement page. New pages should be added in 

alphabetical order as described on the "Part II" title page. The new pages may 

not be able to be placed in exact alphabetical order due to two sided copying of 

the 8th edition List. 

Page numbers are not included on pages beginning with "Part I". This is 

because new pages added to the 9th edition will make them inconsistent with 

page numbers in the 8th edition. Page numbers may be added by hand if 

desired, such as 126a, 126b, etc.
2

9th Edition

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

 WASHINGTON, D.C. 20460

 

 November 9, 2001

 

 OFFICE OF 

SOLID WASTE AND EMERGENCY

RESPONSE

MEMORANDUM

 

SUBJECT: List of Leak Detection Evaluations for Underground Storage Tank Systems 

 (9th Edition) 

FROM: Cliff Rothenstein, Director /s/

 Office of Underground Storage Tanks 

TO: Addressees (see below) and All Interested Parties

 This memorandum provides information on the purpose and limitations of the 9th edition 

of the List of Leak Detection Evaluations for Underground Storage Tank Systems. Previous 

editions of the List have been very helpful tools for underground storage tank (UST) regulators, 

the regulated community, and leak detection equipment vendors. We are pleased to make this 

new edition available on our website for wider dissemination.

Contents of the List

The List of Leak Detection Evaluations for Underground Storage Tank Systems is based 

on reviews conducted by the independent National Work Group on Leak Detection Evaluations 

(NWGLDE), which is made up of state and EPA UST program staff. NWGLDE is not an EPA 

workgroup, and the List is not an EPA list but a NWGLDE list. The List is a compilation of 

underground storage tank and piping leak detection system evaluations that have met certain 

criteria developed by the NWGLDE. 

 There is an Under Review section in the List that lists evaluations that NWGLDE has 

received and for which it is requesting additional information. The List also contains a separate 

listing of protocols under which the included evaluations were performed. Finally, some optional 

maintenance checklists are included; these can help users get the most out of leak detection 

systems.
3

9th Edition

Limitations 

We believe that the List will continue to be of great benefit to regulators, the regulated 

community, and equipment vendors. However, please remember that it has inherent limitations. 

It is based on evaluations, which are one-time events, often conducted in a lab setting according 

to protocols that may not test all aspects of a system. Therefore, appearance on the List does not 

mean that a particular system will work or comply with regulations at any particular site. For 

these reasons, the List cannot be the final word; users should base their decisions on all available 

sources of information. Users should contact the appropriate implementing agency in their 

particular area regarding the approval or acceptance of leak detection systems.

 

Distribution of the List

NWGLDE updates the List periodically as it reviews new evaluations and information. 

The most recent version is made available to the Agency by the Chair of NWGLDE and is then 

posted for wider public dissemination in electronic form on our website. The List can be 

downloaded, viewed, and printed from the internet at http://www.epa.gov/OUST/pubs/index.htm. 

It is available in Adobe Portable Document Format (PDF) and Microsoft Word in rich text format 

(RTF). (For help with access contact Hal White at white.hal@epa.gov or at (703) 603-7177.) 

 In the past, EPA has printed hard copies of the List. However, beginning with the 

previous edition (as previously announced in the 7th) the List will be available only in electronic 

format.

Information from the Chair of NWGLDE

 On October 22, 2001, the Chair of the NWGLDE wrote a memorandum to vendors of 

leak detection equipment and systems regarding this ninth (and latest) edition of the List. This 

memorandum is reprinted as part of the List and contains important information about it. There 

are a few issues which I call to your attention here and are discussed in more detail in the Chair’s 

memo:

- Neither EPA nor NWGLDE approves or will approve leak detection systems for 

compliance in any particular location. Approval or acceptance is the responsibility of the 

implementing agency, in most cases the state environmental agency.

- For an evaluation to be included in the List, an independent third party must have 

performed it in accordance with EPA or other accepted test procedures (“protocols”).

- 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 a vendor in such a way that changes affect 
4

9th Edition

- how it detects and/or quantifies a leak, NWGLDE will give the vendor reasonable time to 

provide the necessary information to clarify or modify the listing.

Additional Information

If you have an evaluation to submit, or if you have comments about a particular listing, 

please see the instructions in the NWGLDE memorandum reprinted in the List. Comments are 

always welcome.

I hope our distribution of this product is helpful to you. If you have questions about the 

distribution, please contact Tim Smith; he can be reached by e-mail at smith.timr@epa.gov, by 

phone at (703) 603-7158, by fax at (703) 603-9163, and by mail at the letterhead address above.

Addressees:

UST/LUST Regional Program Managers

State UST Contacts

Anthony Tafuri, NRMRL Edison

Vendors appearing on List of Leak Detection Evaluations

Members of National Work Group on Leak Detection Evaluations

Stephen Crimaudo, Ass'n of State and Territorial Solid Waste Mgt. Officials

American Society of Petroleum Operations Engineers

Prentiss Searles, American Petroleum Institute

Judy Turner, National Association of Convenience Stores

Thomas West, National Association of Texaco Wholesalers

Bob Renkes, Petroleum Equipment Institute

Melissa Young, Petroleum Marketers Association of America

Mark Morgan, Petroleum Transportation & Storage Association

Roy Littlefield, Service Station Dealers of America

Tom Osborne, Society of Independent Gasoline Marketers of America 

Kathy Nam, OGC

Joan Olmstead, OECA

OUST Management Team

OUST Desk Officers
5

9th Edition

 ALABAMA

 DEPARTMENT OF ENVIRONMENTAL MANAGEMENT

 ADEM

October 18, 2001

MEMORANDUM

TO: Vendors of Leak Detection Equipment/Systems 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 underground storage tank systems - Ninth Edition

Following this memo (and the attachments), you will find the latest edition of our list. The list is 

only available electronically. If a hard copy is desired, the list will have to be down loaded and 

printed. The most recent version of the list is always available in electronic form for 

downloading, viewing, and printing via the Internet at: 

http://www.epa.gov/swerust1/ustsystm/nwgolde.htm 

The list is available in Adobe’s Portable Document Format (PDF) and Microsoft Word in rich 

text format (RTF). For help with access, contact Hal White at white.hal@epa.gov or at (703) 

603-7177. 

If you need to contact members of the work group, the latest information is included for 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. 

Please send new third party evaluations 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, one 

mechanism to achieve this is to submit these protocols to an ad hoc committee organized by 

the University of Wisconsin's Department of Engineering Professional Development 

(Contact Mr. Jack Quigley at 608.265.2083 or, quigley@engr.wisc.edu). If found to 
6

9th Edition

conform with the minimum requirements as described in the "Forward" to each of the 

EPA protocols, an ad hoc committee should recommend that the protocol be added to the 

List. For planning purposes, anticipate at least nine months for review by the ad hoc 

committee and addition to the List by the Work Group.

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 Part II of the List and instead listed 

in the "Under Review" section 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. Please note that the listing of an evaluation 

as "Under Review" at any time in no way implies that the evaluator does or does not meet 

the review criteria.

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 begin to appear in sales literature distributed by 

vendors. We request that you do not 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 draft 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.

We would appreciate any comments you have concerning the list. Please provide comment by 

completing the attached user survey and sending the survey to me at the address, phone number, 

fax number or e-mail address listed on the next page.

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

Document List, List of Leak Detection Evaluations User Survey, Latest Edition of List of Leak 

Detection Evaluations for UST Systems
7

9th Edition

WORK GROUP MEMBERS

MEMBER ADDRESS PHONE/FAX/E-MAIL

Curt D. 

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

Shahla 

Farahnak,

Vice Chair 

California Water Resources Control Board 

Division of Clean Water Programs 

PO Box 944212 

Sacramento, CA 94244-2120

(916) 341-5668 

Fax (916) 341-5808 and 5707

farahnas@cwp.swrcb.ca.gov

Beth DeHaas Maine Department of Environmental 

Protection 

Statehouse Station No. 17 

Augusta, ME 04333

(207) 287-2651 

Fax (207) 287-7826

beth.dehaas@state.me.us

Tim Smith USEPA (Mail Address) (Fed Ex Address)

1301 Pennsylvania Ave. 1235 Jefferson

 Northwest Davis Hwy.

 5402G 13th Floor

 Washington, DC Arlington, VA

 20460 22202

(703) 603-7158

Fax (703) 603-0175

smith.timr@epamail.epa.gov

John Kneece South Carolina Department of Health and 

Environmental Control

2600 Bull Street

Columbia, SC 29201

(803) 898-4364

Fax (803) 898-4330

kneeceje@columb26.dhec.state.sc.us

Jon Reeder Florida Department of Environmental 

Protection

3804 Coconut Palm Drive

Tampa, FL 33619-8318

(813) 744-6100 Ext. 472

Fax (813) 744-6125

jon.reeder@dep.state.fl.us

Mike Kadri Michigan Department of Environmental 

Quality

ST Division

PO Box 30157

Lansing, MI 48909-7657

(517) 335-7204

Fax (517) 335-2245

kadrim@state.mi.us

Mark Lenox Missouri Department of Natural Resources

Technical Assistance Program

PO Box 176

Jefferson City, MO 65102

(573) 526-2421

Fax (573) 526-5808

nrlenom@mail.dnr.state.mo.us

Shaheer 

Muhanna

Georgia DNR - EPD

4244 International Parkway, Suite 104

Atlanta, GA 30354

(404) 362-2579

Fax (404) 362-2654

SHAHEER_MUHANNA@mail.dnr.state.

ga.us

John Cernero USEPA Region 6

1445 Ross Avenue

Dallas, TX 75202

(214) 665-2233

Fax (214) 665-7263

cernero.john@epa.gov
8

9th Edition

WORK GROUP TEAMS

TEAM LEADER MEMBERS

Automatic Tank Gauging (ATG) and Volumetric 

Tank Tightness Test (VTTT) Methods

Beth Dehaas Mike Kadri

Jon Reeder

Continuous In-Tank Leak Detection Methods Shahla Farahnak Shaheer Muhanna

Non-Volumetric Tank Tightness Test Methods John Kneece Mark Lenox

Pipeline Leak Detection Methods Mike Kadri John Kneece

Mark Lenox

Statistical Inventory Reconciliation (SIR) Methods Jon Reeder Shaheer Muhanna

Sensor and Vacuum Methods Tim Smith Shahla Farahnak

List Administration and Surveys Curt Johnson Tim Smith

Jon Reeder

 
9

9th Edition

LEAK DETECTION EQUIPMENT REVIEW - DOCUMENT LIST 

This information lists the documentation required for review of third party evaluation of 

underground storage tank and line leak detection equipment/systems. 

1. 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.

2. 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.

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

4. A sample of the test report (including field work-sheets) which will be submitted to the 

owner/local implementing agency.

5. 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.

6. 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.

7. An affidavit from the manufacturer confirming that there are no mutual financial interests 

between the equipment manufacturer and the third party evaluator.

8. A resume, including all applicable formal training and experience, from personnel who 

conducted the evaluation.

9. Equipment calibration procedures and manufacturer recommended schedule of 

calibration.
10

9th Edition

LEAK DETECTION EQUIPMENT REVIEW - DOCUMENT LIST (Continued)

10. The name, 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.

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

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

a. A list of installers authorized by the manufacturer to install the leak detection equipment.

b. A list of service personnel authorized by the manufacturer to conduct the annual functional 

test (required for all leak detection equipment).

c. 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.

d. 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.

e. 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.

f. 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.

13. 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.
11

9th Edition

LIST OF LEAK DETECTION EVALUATIONS USER SURVEY

1. I work in the following state(s) 

2. My main job function is (circle one)

Regulatory(Circle M for manager, I for inspector) Leak Detection Vendor(manufacturer and/or service co.)

Financial responsibility insurance/assurance agency Tank owner/operator

Other (specify)

3. I have used the list while working with UST systems and release detection. (YES) (NO)

Comments:

4. I have reviewed the National Work Group on Leak Detection Evaluations' list and find it: (circle all that apply)

Easy to follow Good format Useful for my work Up to date Complete Accurate

Difficult to follow Poor format Of no use for my work Outdated Incomplete Inaccurate

Comments:

5. I would benefit from receiving training on the use and applications of the list. (YES) (NO)

Comments:

6. I feel the National Work Group on Leak Detection Evaluations' list has improved upon the quality of leak 

detection equipment and its use in my state(s). (YES) (NO)

Comments:

7. I would like for the National Work Group on Leak Detection Evaluations to continue to focus on improving the 

quality of leak detection equipment and services by continuing to review third party evaluations. (YES) (NO)

Comments:

8. I still have the following concerns about leak detection equipment in my state (circle all that apply).

Equipment quality

Improper equipment installation

Improper equipment servicing/calibration/maintenance (Owner or Service Co.)

Inadequate field services (tank and line tightness testing, sample collection, etc.)

Inadequate regulatory authority for addressing vendors/service companies which provides services of 

questionable quality.

Comments:

 

9. I have the following suggestions on how the Work Group could provide further assistance to me in addressing 

my concerns related to leak detection (attach additional pages if more space is needed).

10. I have the following additional comments on the list (negative, positive, and suggestions for improvement are 

welcomed, attach additional pages if more space is needed.)

PLEASE SEND COMPLETED SURVEY TO: CURT JOHNSON, ALABAMA DEPARTMENT OF 

ENVIRONMENTAL MANAGEMENT P.O. BOX 301463, MONTGOMERY, AL 36130-1463
i

NINTH EDITION 

 

LIST OF LEAK DETECTION EVALUATIONS 

 FOR 

UNDERGROUND STORAGE TANK (UST) 

SYSTEMS 

October 18, 2001 
ii

9th Edition

DISCLAIMER

Appearance on this list is not to be construed as and endorsement by any 

regulatory agency nor is it any guarantee of the performance or the method 

or equipment. Equipment should be installed and operated in accordance 

with all applicable law 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, that the work group has 

completed review of, and that were conducted by an independent third party 

evaluator with leak rates blind to the vendor. 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 acceptable protocols. The list includes an Under Review category, for 

evaluations which the work group’s review could not be finalized prior to 

publication. The listing of system evaluations as “under review” in no way 

implies that the evaluations do or do not meet the criteria for which 

evaluations are reviewed. 
iii

9th Edition Revision Date: November 13, 2001

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.)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR 2

AUTOMATIC MECHANICAL LINE LEAK DETECTOR 4

AUTOMATIC TANK GAUGING METHOD 5

BULK FIELD-CONSTRUCTED TANK LEAK DETECTION METHOD 8

CONTINUOUS IN-TANK LEAK DETECTION METHOD 8

DOUBLE WALLED TANK TIGHTNESS TEST METHOD 9

LARGE DIAMETER PIPELINE LEAK DETECTOR 9

LINE TIGHTNESS TEST METHOD 10

LIQUID-PHASE INTERSTITIAL DETECTOR 10

LIQUID-PHASE OUT-OF-TANK PRODUCT DETECTOR 13

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (TRACER) 14

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (ULLAGE) 14

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (VACUUM) 15

PRESSURE/VACUUM INTERSTITIAL MONITOR 15

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUALITATIVE) 16

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE) 16

VAPOR-PHASE OUT-OF-TANK PRODUCT DETECTOR 17

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL) 17

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL) (Edison Lab Protocol) 18

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL) 18
iv

9th Edition Revision Date: November 13, 2001

TABLE OF CONTENTS

PART II - LEAK DETECTION EQUIPMENT/SYSTEMS SPECIFICATIONS 19

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

and finally by leak rate.)

Absolute Precision Testing Systems 20

Advanced Tank Technology, Inc. 21

Advanced Telemetrics, Ltd. 22

Agar Corp. 24

Alert Technologies, Inc. 25

Andover Controls Corp. 29

Armstrong Monitoring Corp. 32

ASTTest Services Inc. 34

Barton Instrument Systems, LLC 35

Beaudreau Electronics, Inc. 36

Bell Avon, Inc. 38

Brooks KWK, Inc. 39

Caldon, Inc. 40

Caldwell Systems Corp. 41

Campo/Miller, Inc. 43

Computerizing, Inc. 45

Containment Solutions, Inc. (formerly Fluid Containment and O/C Tanks) 46

Control Engineers 50

EBW, Inc. 52

EFA Technologies, Inc. 55

Egemin Naamloze Vennootschap 56

Emco Electronics, Tuthill Transfer Systems 58

Endress+Hauser Systems and Gauging (formerly Coggins Systems, Inc.) 67

Engineered Systems, Inc. 70

Entropy Limited 71

Environment and Safety 73
v

9th Edition Revision Date: November 13, 2001

TABLE OF CONTENTS

PART II - LEAK DETECTION EQUIPMENT/SYSTEMS SPECIFICATIONS

(Continued)

Environmental Fuel Systems, Inc. 74

EnviroSIR LLC 75

Estabrook EZY CHEK Systems (formerly Horner EZY CHEK) 76

FCI Environmental, Inc. 83

FDR Services, Inc. 85

FE Petro, Inc. 86

Gasboy International (formerly William M. Wilson's Sons) 91

Gems Sensors, Inc. (formerly IMO Industries, Inc.) 92

Hasstech 93

Heath Consultants, Inc. 96

HNU Systems, Inc. 100

Horner Products, Inc. 101

HT Technologies, Inc. 104

Ibex Industries 105

INCON Intelligent Controls, Inc. 106

Keekor Environmental Products 114

Leak Detection Systems, Inc. 115

Mallory Controls 116

Marconi Commerce Systems (formerly Gilbarco Environmental Products) 118

Marley Pump Co. 131

Mass Technology Corp. 146

Mine Safety Appliances 149

NESCO (formerly Arizona Instrument Corp.) 150

OMNTEC Mfg., Inc. 154

One Plus Corp. 159

Patriot Sensors and Controls Corp. (formerly MagneTek) 160
vi

9th Edition Revision Date: November 13, 2001

TABLE OF CONTENTS

PART II - LEAK DETECTION EQUIPMENT/SYSTEMS SPECIFICATIONS

(Continued)

PermAlert 162

Petro Vend, Inc. 166

Pneumercator Company, Inc. 181

Precision Tank Service, Inc. 185

Preferred Utilities Manufacturing Corporation 186

ProTank, Inc. 187

Raychem Corp. 195

Ronan Engineering Co. 196

Schuster Instruments 202

Simmons Corp. 203

Simone Engineering, Inc. 205

SIR International, Inc. 206

SIR Monitor (formerly Environmental Management Technologies) 207

Sir Phoenix, Inc. 208

Soiltest, Inc. 210

Sound Products Manufacturing, Inc. (formerly USTest, Inc.) 211

Steel Tank Institute 215

Syscorp, Inc. 217

Tank Automation, Inc. 218

Tanknology - NDE 219

TeleData, Inc. 231

Tidel Engineering, Inc. 232

Tokheim Corp. 241

Tracer Research Corp. 242

Training and Services Corp. 247

Triangle Environmental, Inc. 248

Universal Sensors and Devices, Inc. 252
vii

9th Edition Revision Date: November 13, 2001

TABLE OF CONTENTS

PART II - LEAK DETECTION EQUIPMENT/SYSTEMS SPECIFICATIONS

(Continued)

USTMAN Industries, Inc. 257

Vaporless Manufacturing 261

Veeder-Root 267

Vista Research, Inc. 287

Warren Rogers Associates, Inc. 299

Warrick Controls, Inc. 301

Watson Systems, Inc. (formerly EnviroQuest Technologies Limited) 304

Western Environmental Resources 305

Xerxes Corp. 308
viii

9th Edition Revision Date: November 13, 2001

TABLE OF CONTENTS 

PART III - LEAK DETECTION EQUIPMENT/SYSTEMS THIRD PARTY EVALUATIONS

UNDER REVIEW 309

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

PART IV - ACCEPTABLE TEST PROTOCOLS 313

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

PART V - LEAK DETECTION EQUIPMENT MAINTENANCE CHECKLISTS 317

APPENDIX - GLOSSARY OF TERMS 325
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition

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.

9th Edition Revision Date: March 20, 2000

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

VENDOR EQUIPMENT NAME

LEAK RATE/THRESHOLD/

MAX PIPELINE CAPACITY

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

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

3 gph/2.36 gph/35.36 gallons

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

LS300-120 PLUS AL LSI

3 gph/1.5 gph/163 gallons

0.2 gph/0.1 gph/163 gallons

0.1 gph/0.05 gph/163 gallons

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

0.1 gph/0.05 gph/89 gallons

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

EECO System LLD

(for Flexible Pipelines)

3.0 gph/2.0 gph/49.6 gallons

0.1 gph/0.0793 gph/49.6 gallons

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

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

Marconi Commerce 

Systems (formerly 

Gilbarco Environmental 

Products)

EMC Environmental Management Console

with Line Leak Detector, Series PA02630000501

3.0 gph/1.5 gph/158 gallons

0.2 gph/0.1 gph/158 gallons

0.1 gph/0.079 gph/158 gallons

EMC Environmental Management Console

with Line Leak Detector, Series PA02630000501

(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

EMC Environmental Management Console

with Line Leak Detector, Series PA0263000060X

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

EMC Environmental Management Console

with Line Leak Detector, Series PA0263000060X

(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

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

Enhanced, LMS Environmental Management 

Consoles with Line Leak Detector, Series 

PA0263000100X, PA0277000060X

3.0 gph/2.5 gph/100 gallons

0.2 gph/0.17 gph/100 gallons

0.1 gph/0.09 gph/100 gallons

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

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

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

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR (continued)

VENDOR EQUIPMENT NAME

LEAK RATE/THRESHOLD/

MAX PIPELINE CAPACITY

Petro Vend, Inc. LineTite Pipeline Leak Monitor 3.0 gph/2.0 gph/341 gallons

0.1 gph/0.062 gph/341 gallons

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

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

0.1 gph/0.05 gph/172 gallons

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 

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 98LD2000PLC

(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 TLS-350, 350PC, 350R, 350RPC, 350Plus 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

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

TLS 350, 350PC, 350R, 350RPC, 350Plus Line 

Leak Detector, 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

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

Line Leak Detector, 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

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

Line Leak Detector, Series 8494, Pressurized Line 

Leak Detector, 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.

9th Edition Revision Date: April 19, 2001

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

STP-MLD-D Pipeline Leak Detector 3.0 gph/2.0 gph/341 gallons

STP-MLD-E Flexline Line Leak Detector

(for Flexible Pipelines)

3.0 gph/2.0 gph/49.6 gallons

STP-MLD-HC Pipeline Leak Detector 3.0 gph/2.0 gph/172 gallons

STP-MLD-HCD Pipeline Leak Detector 3.0 gph/2.0 gph/172 gallons

Marley Pump Co. Red Jacket DLD, XLD 3.0 gph/2.0 gph/129 gallons

Red Jacket FX1,FX2,FX1V,FX2V 3.0 gph/2.0 gph/316 gallons (FX1,FX1V),

3.0 gph/2.0 gph/362 gallons (FX2,FX2V)

Red Jacket FX1,FX2,FX1V,FX2V Flexline

(for Flexible Pipelines)

3.0 gph/2.0 gph/49 gallons

Red Jacket FX1D,FX2D, FX1DV, FX2DV Installed in 

the Big-Flow

3.0 gph/2.0 gph/362 gallons

Red Jacket FX1DV, FX2DV Installed in the Big-Flow 

(for Flexible Pipelines)

3.0 gph/2.0 gph/39.4 gallons

Red Jacket XLP 3.0 gph/2.0 gph/129 gallons

Red Jacket XLP

(for Flexible Pipelines)

3.0 gph/2.0 gph/48.9 gallons

Tokheim Corp. Tokheim Pressure Monitor, Models PM 101, 585APM3.0 gph/2.25 gph/78 gallons

Vaporless 

Manufacturing

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

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

(for Flexible Pipelines)

3.0 gph/2.0 gph/59.6 gallons

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

Vaporless 98LD-2000, 99LD-2000, 99LD-2200, LD2200 Scout

(for Rigid and Flexible Pipelines)

3.0 gph/2.5 gph/172 gallons (rigid), 39.5 gallons 

(flexible)

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

9th Edition Revision Date: July 2, 2001

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 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

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

Caldwell Systems 

Corp.

Tank Manager

(Ultrasonic Probe)

0.2 gph/0.1 gph/ 20,000 gallons

0.1 gph/0.05 gph/ 20,000 gallons

Control Engineers CEI 3000 Tank Level Module - Version TLP2, 

Normal/Rapid Test Mode

(Magnetostrictive Probe)

0.2 gph/0.1 gph/15,000 gallons

0.1gph0.05 gph/15,000 gallons

EBW, Inc. Auto-Stik II, Auto-Stik Jr.

(Magnetostrictive Probe)

0.2 gph/0.1 gph/15,000 gallons

0.1 gph/0.05 gph/15,000 gallons

Endress+Hauser 

Systems and Gauging 

(formerly Coggins 

Systems, Inc.)

Leak Manager with Barton 3500 ATG 0.2 gph/0.1 gph/75,000 gallons

Egemin Naamloze 

Vennootschap

E'SPI III

(Mass Buoyancy Probe)

0.2 gph/0.075 gph/15,000 gallons

E'SPI IV

(Mass Buoyancy Probe)

0.2 gph/0.1 gph/15,000 gallons

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)

0.2 gph/0.1 gph/15,000 gallons

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

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

Gasboy International 

(formerly 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

INCON Intelligent 

Controls, Inc.

TS 1000, 1001, 2001

(Magnetostrictive Probe)

0.2 gph/0.1 gph/15,000 gallons

0.1 gph/0.05 gph/15,000 gallons

TS 1000, 1001, 2001

(Incon LL2 Magnetostrictive Probe)

0.2 gph/0.1 gph/30,000 gallons

TS 2000

(Magnetostrictive Probe)

0.2 gph/0.058 gph/15,000 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

Marconi Commerce 

Systems (formerly 

Gilbarco Environmental 

Products)

EMC Environmental Management Console

EMC Basic Monitoring System Tank Monitors 2, 3, 

2.1, 3.1,PAO238000XXXX

(Capacitance 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.

9th Edition Revision Date: May 25, 2001

AUTOMATIC TANK GAUGING METHOD (CONTINUED)

VENDOR EQUIPMENT NAME

LEAK RATE/THRESHOLD/

MAX TANK CAPACITY

Marconi Commerce 

Systems (formerly 

Gilbarco Environmental

Products)

EMC Environmental Management Console

EMC Basic Monitoring System Tank Monitors 

2.1,3.1, PAO264XXX0000

(Capacitance Probe)

0.2 gph/0.126 gph/15,000 gallons

0.1 gph/0.071 gph/15,000 gallons

EMC Environmental Management Console

EMC Basic Monitoring System Tank Monitors 2.1, 

3.1, PAO265XXX0000

(Magnetostrictive Probe)

0.2 gph/0.093 gph/15,000 gallons

0.1 gph/0.071 gph/15,000 gallons

EMC/PC Series Monitoring Systems

PA0265 and PA0300

(Magnetostrictive Probe)

0.2 gph/0.126 gph/20,000 gallons

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

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

gallons

Red Jacket ATM System, Version RLM 5000, 5001, 

9000

(Magnetostrictive Probe)

0.2 gph/0.1 gph/15,000 gallons

Sonic Technology (ST) 1400-1800 Series Tank 

Monitoring System, ATG Automatic Tank Gauging 

Monitor, LLM Series Liquid Level Monitor, FMS Fuel 

Management Monitor

(Ultrasonic Probe)

0.2 gph/0.1 gph/18,000 gallons

0.1 gph/0.05 gph/18,000 gallons

NESCO (formerly 

Arizona Instrument 

Corp.)

Encompass MTS IPAM #17-903

(Magnetostrictive Probe #17-9300)

0.2 gph/0.1 gph/15,000 gallons

Encompass USF IPAM #17-901

(Ultrasonic Probe #17-9100)

0.2 gph/0.1 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

Patriot Sensors and 

Controls Corp. 

(formerly 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

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

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

Site Sentinel Models II and III

(Model 613, 2 inch dia Floats, Magnetostrictive 

Probe)

0.2 gph/0.1 gph/15,000 gallons

Site Sentinel Models II and III,

(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

Site Sentinel Models 1, II and III

(Model 924, 2 inch dia Floats, Magnetostrictive 

Probe)

0.2 gph/ 0.1 gph/20,000 gallons 

Site Sentinel Models 1, II and III,

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

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

AUTOMATIC TANK GAUGING METHOD (CONTINUED)

VENDOR EQUIPMENT NAME

LEAK RATE/THRESHOLD/

MAX PRODUCT SURFACE AREA

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

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

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

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

Sound Products 

Manufacturing, Inc. 

(formerly USTest, 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

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 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 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 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

Universal Sensors and 

Devices, Inc.

TICS-1000

(Magnetostrictive Probe)

0.2 gph/0.1 gph/15,000 gallons

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

350R, 350RPC, 350Plus UST ATGS

(Model 7842 Digital Sensing Capacitance Probe)

0.2 gph/0.1 gph/15,000 gallons

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

350PC, 350R, 350RPC, 350Plus 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

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

350, 350PC, 350R, 350RPC, 350Plus 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

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

350PC, 350R, 350RPC, 350Plus 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

TLS Series 300, 350, 350R, 350Plus 

(Models 8463, 8473, 8493 Magnetostrictive Probes)

0.2 gph/0.126 gph/20,000 gallons

0.1 gph/0.071 gph/20,000 gallons

TLS Series 300, 350, 350R, 350Plus 

(Models 8463, 8473, 8493 Magnetostrictive Probes)

0.2 gph/0.126 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.

9th Edition Revision Date: August 9, 2001

BULK FIELD-CONSTRUCTED TANK LEAK DETECTION METHOD

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

Endress+Hauser 

Systems and Gauging 

(formerly Coggins 

Systems, Inc.)

Leak 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

Endress+Hauser 

Systems and Gauging 

(formerly Coggins 

Systems, Inc.)

Leak 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

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

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

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

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 that 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

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

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

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 

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

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

CONTINUOUS IN-TANK LEAK DETECTION METHOD

VENDOR EQUIPMENT NAME

LEAK RATE/THRESHOLD/

MAX TANK CAPACITY

Emco Electronics, 

Tuthill Transfer 

Systems

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

Galaxy ATG Systems

(Q0400-4xx Magnetostrictive Probe)

0.2 gph/0.1 gph/35,000 gallons

Marconi Commerce 

Systems (formerly 

Gilbarco Environmental 

Products)

EMC Series with CSLD, PAO265XXXX100, 

PA0300XXXX100

(Magnetostrictive Probe)

0.2 gph/0.16 gph/38,170 gallons

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

Systems with CSLD 

(Models 8473, 8493 Magnetostrictive Probes)

0.2 gph/0.16 gph/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.

9th Edition Revision Date: March 20, 2000

DOUBLE WALLED TANK TIGHTNESS TEST METHOD

VENDOR EQUIPMENT NAME

LEAK RATE/THRESHOLD/

MAX TANK CAPACITY

Containment Solutions 

Inc. (formerly Fluid 

Containment which was 

formerly 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 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

LARGE DIAMETER PIPELINE LEAK DETECTION METHOD

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

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 in gph for Version

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

gallons

0.00209% of line capacity in gph for Version 

1.1 /0.000916% of line volume in gph/612,954 

gallons

Model HT-100-n Monitoring Method and Line 

Tightness Test Method,

Version 1.0, Version 1.1

0.004% ÷ √ ̄(n) of line capacity in gph 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 in gph for 

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

in gph; where n is the # of tests averaged 

together/612,954 gallons

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

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

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

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

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

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.

9th Edition Revision Date: May 2, 2001

LINE TIGHTNESS TEST METHOD

VENDOR EQUIPMENT NAME

LEAK RATE/THRESHOLD/

MAX PIPELINE CAPACITY

Estabrook EZY CHEK 

Systems (formerly 

Horner EZY CHEK)

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

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

Heath Consultants, Inc. Petro Tite Line Tester 0.1 gph/0.05 gph/129 gallons

Heath Consultants, Inc. Petro Tite Line Tester

(for Flexible Pipelines)

0.1 gph/0.05 gph/49.6 gallons

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

LTP-5000 Line Tester 0.1 gph/0.05 gph/41 gallons

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

PTK-88 0.1 gph/0.05 gph/40 gallons

TLD-1 0.1 gph/0.05 gph/50 gallons

TLD-1 (Flexible Pipelines) 0.1 gph/0.05 gph/50 gallons

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

not be declared tight when tracer chemical is 

detected outside of the pipeline/not limited by 

capacity

Training and Services 

Corp.

AcuRite 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

LIQUID-PHASE INTERSTITIAL DETECTOR

VENDOR EQUIPMENT NAME OPERATING PRINCIPLE

Beaudreau Electronics, 

Inc.

Models 404, 406 Pump Cut-Offs float switch (Model 404),

refractive index of liquids (Model 406)

Beaudreau Electronics, 

Inc.

Models 510, 516 Discriminating Sensors polymer strip, hyrocarbon-only (Model 510),

optical sensor and conductivity (Model 516)

Caldwell Systems 

Corp.

Tank Manager Liquid Sensor, Version TMLIQ ultrasonic

Containment Solutions, 

Inc. (formerly Fluid 

Containment which was 

formerly O/C Tanks)

FCI Liquid Filled Interstitial Monitor

Tank Model DWT6 with Model FHRB 810 Level 

Sensor

float switch

DDAS 910 Discriminating Sensor for Dry Annular 

Spaces; DCBS 900 Discriminating Sensor for 

Collars, Bulkheads, Sumps

capacitance change

FOVF 600B, FOVF 600S Non-Discriminating 

Sensors for High Level Overfill (Brass, Steel); FCBS 

700 Non-Discriminating Sensors for Collars, 

Bulkheads, Sumps; FDAS 710 Non-Discriminating 

Sensor for Dry Annular Spaces; FHRB 810 NonDiscriminationg Sensor for Reservoirs

float switch

EBW, Inc. AUTO-STIK Sensors LS-5, LS-7, LS-10, LS-15,

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

float switch

Emco Electronics, 

Tuthill Transfer 

Systems

EECO System, Leak Sensor II, Leak Sensor Jr.

Thermistor and Proximity probes

thermal conductivity, proximity switch

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

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

laws and regulations.

Revision Date: November 7, 2001

LIQUID-PHASE INTERSTITIAL DETECTOR (CONTINUED)

VENDOR EQUIPMENT NAME OPERATING PRINCIPLE

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)

INCON Intelligent 

Controls, Inc.

Tank Sentinel TS-1000EFI with

TSP-DIS BriteSensor,

Tank Sentinel TS-1000/TS-2000 with

TSP-EIS Standard Sensor and TSP-PS Liquid 

Contact Sensor

opto-electric

Tank Sentinel TS-1000EFI with

TSP-HIS BriteSensor,

Tank Sentinel TS-1000/TS-2000 with

TSP-HLS Standard Sensor and TSP-ULS Standard 

Sensor

magnetic switch

Marconi Commerce 

Systems (formerly 

Gilbarco Environmental 

Products)

PA02590XXX000, PA02591144000, 

PA02592000000

float switch

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)

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)

NESCO (formerly 

Arizona Instrument 

Corp.)

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

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

refraction

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

Controller Models OEL 8000 11, K-OEL 8000 11 

with Liquid level Sensors BX-PDS, BX-PDWF,

BX-PDWS

optical sensor, conductivity

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) 

PermAlert PAL-AT Models AT20C, AT50C, AT40K with

PHL Hydrocarbon Sensor

electrical conductivity

TankWatch Models PHM10, PHMS with 

Combination Hydrocarbon/Water Probe, 

Hydrocarbon Probe

electrical conductivity

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)

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

LDE 700, LDE 740, LDE 9000 with

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

capacitance

TMS 2000, TMS 3000 with

ES820-100 Non-Discriminating Liquid Sensor, 

ES820-200 Discriminating LiquidSensor

optical 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.

Revision Date: August 10, 2001

LIQUID-PHASE INTERSTITIAL DETECTOR (CONTINUED)

VENDOR EQUIPMENT NAME OPERATING PRINCIPLE

Preferred Utilities 

Manufacturing 

Corporation

TG-EL-D3 Controller with

HD-A1 Sensor

optical sensor, electrical conductivity

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

Simone Engineering, 

Inc.

Magnetrol Model 918 Ultrasonic Point Level Switch 

with ABB Automation Freelance 2000 Control 

System

electrical conductivity, ultrasonic

Tidel Engineering, Inc. EMS-3500 with

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)

Universal Sensors and 

Devices, Inc.

Leak Alert System

Models LAL-100, LA-01, LA-02, LA-04, LA-X4, LA08, DLS-01, LS-20, LS-36, LS-70, CATLAS with

LALS-1 Liquid Sensor 

thermal conductivity

Veeder-Root ILS-250, ILS-350, TLS-250i, 250i Plus, 300, 300C, 

300i, 300PC,

TLS-350 Series with

Interstitial Liquid Sensor for Fiberglass Tanks 

0794390-401, 404, 407, 409

Interstitial Liquid Sensor for Steel Tanks

0794390-420, 460

Liquid Sensor for Sumps 0794390-206

float switch

TLS-350 Series 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)

TLS-350 Series,TLS-300, 300i with

Dispenser Pan Sensor 794380-322,

Discriminating Containment Sump Sensor

794380-352

product permeable, reed switch/float

Dispenser Pan Sensor 847990-001 and 

Differentiating Dispenser Pan Sensor 847990-002 

with Dispenser Control Interface

product permeable, reed switch/float

TLS-350 Series, TLS-300, 300i with

Dual and Single Stage Hydrostatic Sensors 794380-

301, 302

float switch

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

350RPC with

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

Piping Sump Sensor 794380-208, 209, 

Micro Sensor 794380-340

product permeable,

ultrasonic/float switch

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

Model DFP-25 Sensor product solubility
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

Revision Date: March 20, 2000

LIQUID-PHASE OUT-OF-TANK PRODUCT DETECTOR

VENDOR EQUIPMENT NAME OPERATING PRINCIPLE

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

Armstrong Monitoring 

Corp.

AMC 5100 with

Leak Detection Cable AMC-5007

electrical conductivity

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

with Types 1, 2 Sensors

product soluble

EBW, Inc. AUTO-STIK 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

Gems Sensors, Inc. 

(formerly IMO 

Industries, Inc.)

Gems Smartwell Portable Monitor Model WPM-535

with Groundwater Probe Model WP-535

conductive polymer

INCON Intelligent 

Controls, Inc.

Tank Sentinel TS-1000EFI 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)

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

MD241R, MD241RRA, MD241G, MD241GRA

electrical conductivity

Marconi Commerce 

Systems (formerly 

Gilbarco Environmental 

Products)

EMC Environmental Management Console 

Groundwater Sensor

Series PA02700XX0001

electrical conductivity

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

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

Sensor Cable, TFH Hydrocarbon Sensor Cable

impedance change

PAL-AT Models AT20C, AT50C, AT40K with

PHFW Hydrocarbon Probe and Type 1 or Type 2 

Sensor

product soluble

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)

SiteSentinel Controller with

Hydrocarbon Sensitive Polymer Cables

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

#30-3219-12 

product permeable

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

Raychem Corp. TraceTek Alarm and Locator Modules

TT502, TT5000, TT3000 Fuel Sensing Cable 

electrical conductivity

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 Detector #301-0324-001, #301-0325-001, 

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

electrical conductivity

Veeder-Root 350 Series UST Monitoring Systems

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

with Groundwater Sensors 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.

Revision Date: November 7, 2001

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (TRACER)

VENDOR EQUIPMENT NAME LEAK RATE/THRESHOLD

MAX TANK CAPACITY

Tracer Research Corp. Tracer Tight 0.1 gph and 0.005gph/A tank system should 

not be declared tight when tracer chemical is 

detected outside of the tank./not limited by 

capacity

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 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

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

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

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

Sound Products 

Manufacturing, Inc. 

(formerly USTest, 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). 

Tanknology - NDE 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

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

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

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

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

laws and regulations.

9th Edition Revision Date: March 20, 2000

NON-VOLUMETRIC TANK TIGHTNESS TEST METHOD (VACUUM)

VENDOR EQUIPMENT NAME

LEAK RATE/THRESHOLD/

MAX TANK CAPACITY

Estabrook EZY CHEK 

Systems (formerly 

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

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./50,000 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 – NDE 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

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 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

PRESSURE/VACUUM INTERSTITIAL MONITOR

VENDOR EQUIPMENT NAME

LEAK RATE/THRESHOLD/

MAX TANK CAPACITY

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

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

Steel Tank Institute Permatank Interstitial Vacuum Monitor

Liquid Leaks

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

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

laws and regulations.

9th Edition Revision Date: November 6, 2001

STATISTICAL INVENTORY RECONCILIATION TEST METHOD 

(QUALITATIVE)

VENDOR EQUIPMENT NAME

LEAK RATE/THRESHOLD/

MAX TANK CAPACITY

Entropy Limited Precision Tank Inventory Control System, Version 

90

0.1 gph/0.04 gph/15,000 gallons

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

USTMAN Industries, 

Inc.

YES SIR 90 0.2 gph/0.1 gph/15,000 gallons

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

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

Entropy Limited Precision Tank Inventory Control System

Revision 90

0.1 gph/0.05 gph/22,500 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 Versions 3.0 0.2 gph/0.1 and 0.16gph/45,000 gallons

SIR PRO 1 Versions 4.0 0.1 gph/0.05 gph/33,000 gallons

Precision Tank Service, 

Inc.

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

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

SIR 5.7 LM 0.2 gph/0.10 gph/45,000 gallons

0.1 gph/0.05 gph/45,000 gallons

SIR International, Inc. Mitchell's SIR Program Version 2.6 0.1 gph/0.05 gph/45,000 gallons

SIR Monitor (formerly 

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 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, Version 3.20 0.1 gph/0.05 gph/60,000 gallons

USTMAN Industries, 

Inc.

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

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

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)

Warren Rogers 

Associates, Inc.

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

WRA Statistical Inventory Analysis, Version 5.2 0.1 gph/0.05 gph/36,000 gallons

Watson Systems, Inc. 

(formerly EnviroQuest 

Technologies Limited)

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

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

laws and regulations.

9th Edition Revision Date: March 20, 2000

VAPOR-PHASE OUT-OF-TANK PRODUCT DETECTOR

VENDOR EQUIPMENT NAME OPERATING PRINCIPLE

Armstrong Monitoring 

Corp.

AMC 5100, Vapor Sensor AMC F4000 metal oxide semiconductor

Emco Electronics, 

Tuthill Transfer 

Systems

EECO 1500, 2000, 3000, Leak Sensor,

Leak Sensor II, Leak Sensor Jr. with

Q0002-001, 005 Sensors

adsistor(Q0002-001),

metal oxide semiconductor (Q0002-005)

Environmental Fuel 

Systems, Inc.

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

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

Mallory Controls Pollulert Probes MD221V, MD221VRA, MD210V, 

MD210VRA

adsistor

Marconi Commerce

Systems (formerly 

Gilbarco Environmental 

Products)

PA02660000000 adsistor

Mine Safety Appliances Tankgard, P/N 481532, and

Tankgard VIII, P/N 488803

metal oxide semiconductor

NESCO (formerly 

Arizona Instrument 

Corp.)

Soil Sentry Twelve-X metal oxide semiconductor

Petro Vend, Inc. Petrosentry TLD III, SiteSentinel, Smart Module and 

Vapor Sensor

metal oxide semiconductor

Petro Vend, Inc. SiteSentinel Controller with

Vapor Sensor Part #30-3222,

metal oxide semiconductor (part #30-3222),

optical sensor (part #30-3223)

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

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

adsistor

Tracer Research Corp. Tracer Tight chromatographic (looks for chemical tracer)

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 with 

Adsistor Vapor Probe 794390-700

adsistor

Warrick Controls, Inc. Model 5700 Meter with PVP-2 Sensor adsistor

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 (formerly 

Horner EZY CHEK)

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

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

Heath Consultants, Inc. Petro Comp 0.1 gph/0.05 gph/15,000 gallons

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

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

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

laws and regulations.

9th Edition Revision Date: November 7, 2001

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL) 

(CONTINUED)

VENDOR EQUIPMENT NAME

LEAK RATE/THRESHOLD/

MAX TANK CAPACITY

Western Environmental 

Resources

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

AES System II

(Large Tanks)

0.1 gph/0.05 gph/75,000 gallons

VOLUMETRIC TANK TIGHTNESS TEST METHOD (OVERFILL)

(EDISON LAB PROTOCOL)

VENDOR EQUIPMENT NAME

LEAK RATE/THRESHOLD/

MAX TANK CAPACITY

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

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

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

Estabrook EZY CHEK 

Systems (Formerly 

Horner EZY CHEK)

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

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

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

Sound Products 

Manufacturing, Inc. 

(formerly USTest, Inc.)

UST 2000/LL 0.1 gph/0.05 gph/15,000 gallons

UST 2000/P 0.1 gph/0.05 gph/45,000 gallons

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

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

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

laws and regulations.

9th Edition

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.

9th Edition 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.

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.

9th Edition Issue Date: July 2, 2001

Endress+Hauser Systems and Gauging

(formerly Coggins Systems, Inc.)

Leak Manager with 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.

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.

Endress+Hauser Systems and Gauging 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.

9th Edition Issue Date: August 9, 2001

Endress+Hauser Systems and Gauging

(formerly Coggins Systems, Inc.)

Leak Manager and RemoteTerminal Unit RTU/8130

(MTS Magnetostrictive Probe)

BULK FIELD-CONSTRUCTED TANK LEAK DETECTION METHOD

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 larger than 50,000 gallons. 

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 standalone 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).

Endress+Hauser Systems and Gauging 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.

9th Edition Revision Date: July 2, 2001

Endress+Hauser Systems and Gauging

(formerly Coggins Systems, Inc.)

Leak Manager with Barton Series 3500 ATG (48 hour test) (72 hour test)

BULK FIELD-CONSTRUCTED TANK LEAK DETECTION METHOD

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 smaller. 

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.

Endress+Hauser Systems and Gauging 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.

9th Edition Revision Date: July 9, 2001

Estabrook EZY CHEK Systems (formerly 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 oils #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 about 2 minutes to run the test after desired vacuum is reached.

When groundwater level in tank excavation backfill is above bottom of tank: 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" lg) tank.

Before starting test, water sensor must be calibrated to "minimum detectable water level" (see "Water 

Sensor" section below) according to manufacturer's instructions. 

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.

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.

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: If groundwater level in tank excavation backfill is above bottom of tank, water sensor must be used 

and test time extended to ensure water ingress detection during test.

Groundwater level in tank excavation backfill must be determined by observation well or soil probe in 

tank excavation backfill.

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: (877) 368-7215
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Issue Date: April 19, 2001 

FE Petro, Inc.

STP-MLD-HC 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.

Other liquids may be tested after consultation with the manufacturer.

Specification: System tests rigid pipelines.

Tests are conducted at operating pressure.

Pipeline Capacity: Maximum of 172 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: Test conducted using gasoline in 200 feet of 3.25 inch fiberglass pipe.

Petro, Inc. Evaluator: Ken Wilcox Associates, Inc.

P.O. Box 139 Tel: (816) 443-2494

McFarland, WI 53558 Date of Evaluation: 11/07/00

Tel: (608) 838-8786
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Issue Date: April 19, 2001 

FE Petro, Inc.

STP-MLD-HCD 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, kerosene.

Other liquids may be tested after consultation with the manufacturer.

Specification: System tests rigid pipelines.

Tests are conducted at operating pressure.

Pipeline Capacity: Maximum of 172 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: Test conducted using diesel in 200 feet of 3.25 inch fiberglass pipe.

FE Petro, Inc. Evaluator: Ken Wilcox Associates, Inc.

P.O. Box 139 Tel: (816) 443-2494

McFarland, WI 53558 Date of Evaluation: 11/07/00

Tel: (608) 838-8786
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: October 18, 2001

Heath Consultants, Inc.

Petro Tite Line Tester

LINE TIGHTNESS TEST METHOD

Certification: Leak rate of 0.1 gph with PD = 99.99% and PFA = 0.37%.

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 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 129 gallons.

Waiting Time: None between delivery and testing.

None between dispensing and testing.

Test Period: Minimum of 1 hour pretest at or above test pressure (determines the effects 

of pipe deflection and stretch on test results) followed by minimum of 1 

hour (four 15 minute readings) test period at test pressure. 

Test data are acquired and recorded manually.

Calibration: System must be checked annually and, if necessary, calibrated in 

accordance with manufacturer's instructions.

Heath Consultants, Inc. Evaluator: Ken Wilcox Associates

9030 Monroe Rd. Tel: (816) 443-2494

Houston, TX 77061 Date of Evaluation: 03/11/91

Tel: (713) 947-9292
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: October 18, 2001

Heath Consultants, Inc.

Petro Tite Line Tester

LINE TIGHTNESS TEST METHOD

Certification: Leak rate of 0.1 gph with PD = 99.99% and PFA = 0.37%.

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 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 129 gallons.

Waiting Time: None between delivery and testing.

None between dispensing and testing.

Test Period: Minimum of 1 hour pretest at or above test pressure (determines the effects 

of pipe deflection and stretch on test results) followed by minimum of 1 

hour (four 15 minute readings) test period at test pressure. 

Test data are acquired and recorded manually.

Calibration: System must be checked annually and, if necessary, calibrated in 

accordance with manufacturer's instructions.

Heath Consultants, Inc. Evaluator: Ken Wilcox Associates

9030 Monroe Rd. Tel: (816) 443-2494

Houston, TX 77061 Date of Evaluation: 03/11/91

Tel: (713) 947-9292
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: October 18, 2001

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.

Tests are conducted at 60 psi.

Mechanical line leak detector must be removed from pipeline for duration of 

test.

Pipeline Capacity: Maximum of 49.6 gallons.

Waiting Time: None between delivery and testing.

None between dispensing and testing.

Test Period: Minimum 1 hour pretest at 90 psi (determines the effects of pipe deflection 

and stretch on test results), followed by 30 minute restabilization period at 

60 psi, followed by 1 hour (four 15 minute readings) test period at 60 psi. 

Test data are acquired and recorded manually.

Calibration: System must be checked annually and, if necessary, calibrated in 

accordance with 

manufacturer's instructions.

Heath Consultants, Inc. Evaluator: Ken Wilcox Associates

9030 Monroe Rd. Tel: (816) 443-2494

Houston, TX 77061 Date of Evaluation: 12/07/94

Tel: (713) 947-9292
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: October 18, 2001

Heath Consultants, Inc.

Petro Tite Line Tester

LINE TIGHTNESS TEST METHOD

Certification: Leak rate of 0.1 gph with PD = 99.99% and PFA = 0.37%.

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 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 129 gallons.

Waiting Time: None between delivery and testing.

None between dispensing and testing.

Test Period: Minimum of 1 hour pretest at or above test pressure (determines the effects 

of pipe deflection and stretch on test results) followed by minimum of 1 

hour (four 15 minute readings) test period at test pressure. 

Test data are acquired and recorded manually.

Calibration: System must be checked annually and, if necessary, calibrated in 

accordance with manufacturer's instructions.

Heath Consultants, Inc. Evaluator: Ken Wilcox Associates

9030 Monroe Rd. Tel: (816) 443-2494

Houston, TX 77061 Date of Evaluation: 03/11/91

Tel: (713) 947-9292
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: October 18, 2001

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.

Tests are conducted at 60 psi.

Mechanical line leak detector must be removed from pipeline for duration of 

test.

Pipeline Capacity: Maximum of 49.6 gallons.

Waiting Time: None between delivery and testing.

None between dispensing and testing.

Test Period: Minimum 1 hour pretest at 90 psi (determines the effects of pipe deflection 

and stretch on test results), followed by 30 minute restabilization period at 

60 psi, followed by 1 hour (four 15 minute readings) test period at 60 psi. 

Test data are acquired and recorded manually.

Calibration: System must be checked annually and, if necessary, calibrated in 

accordance with manufacturer's instructions.

Heath Consultants, Inc. Evaluator: Ken Wilcox Associates

9030 Monroe Rd. Tel: (816) 443-2494

Houston, TX 77061 Date of Evaluation: 12/07/94

Tel: (713) 947-9292
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: October 18, 2001

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.

Tests are conducted at 60 psi.

Mechanical line leak detector must be removed from pipeline for duration of 

test.

Pipeline Capacity: Maximum of 49.6 gallons.

Waiting Time: None between delivery and testing.

None between dispensing and testing.

Test Period: Minimum 1 hour pretest at 90 psi (determines the effects of pipe deflection 

and stretch on test results), followed by 30 minute restabilization period at 

60 psi, followed by 1 hour (four 15 minute readings) test period at 60 psi. 

Test data are acquired and recorded manually.

Calibration: System must be checked annually and, if necessary, calibrated in 

accordance with manufacturer's instructions.

Heath Consultants, Inc. Evaluator: Ken Wilcox Associates

9030 Monroe Rd. Tel: (816) 443-2494

Houston, TX 77061 Date of Evaluation: 12/07/94

Tel: (713) 947-9292
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: October 18, 2001

Heath Consultants, Inc.

Petro Tite Line Tester

LINE TIGHTNESS TEST METHOD

Certification: Leak rate of 0.1 gph with PD = 99.99% and PFA = 0.37%.

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 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 129 gallons.

Waiting Time: None between delivery and testing.

None between dispensing and testing.

Test Period: Minimum of 1 hour pretest at or above test pressure (determines the effects 

of pipe deflection and stretch on test results) followed by minimum of 1 

hour (four 15 minute readings) test period at test pressure. 

Test data are acquired and recorded manually.

Calibration: System must be checked annually and, if necessary, calibrated in 

accordance with manufacturer's instructions.

Heath Consultants, Inc. Evaluator: Ken Wilcox Associates

9030 Monroe Rd. Tel: (816) 443-2494

Houston, TX 77061 Date of Evaluation: 03/11/91

Tel: (713) 947-9292
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: October 18, 2001

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.

Tests are conducted at 60 psi.

Mechanical line leak detector must be removed from pipeline for duration of 

test.

Pipeline Capacity: Maximum of 49.6 gallons.

Waiting Time: None between delivery and testing.

None between dispensing and testing.

Test Period: Minimum 1 hour pretest at 90 psi (determines the effects of pipe deflection 

and stretch on test results), followed by 30 minute restabilization period at 

60 psi, followed by 1 hour (four 15 minute readings) test period at 60 psi. 

Test data are acquired and recorded manually.

Calibration: System must be checked annually and, if necessary, calibrated in 

accordance with manufacturer's instructions.

Heath Consultants, Inc. Evaluator: Ken Wilcox Associates

9030 Monroe Rd. Tel: (816) 443-2494

Houston, TX 77061 Date of Evaluation: 12/07/94

Tel: (713) 947-9292
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: July 19, 2001

Marconi Commerce Systems (formerly Gilbarco Environmental Products)

PA02590XXX000, PA02591144000, PA02592000010

LIQUID-PHASE INTERSTITIAL DETECTOR

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

Specificity Results (in addition to above):

Activated: diesel, heating oil #2, water.

Comments: 

Sensors are reusable.

Marconi Commerce Systems Evaluator: Carnegie Mellon Research Institute

7300 W. Friendly Ave. Tel: (412) 268-3495

Greensboro, NC 27410 Date of Evaluation: 07/17/92, 04/22/98

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.

9th Edition Issue Date: July 31, 2001

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.

Marley Pump Co. Evaluator: Ken Wilcox Associates

500 East 59th St., P.O. Box 3888 Tel: (816) 443-2494

Davenport, IA 52807 Dates of Evaluation: 03/15/94, 07/30/96,

Tel: (888) 262-7539 03/11/99
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition 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.

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.

9th Edition 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.

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.

9th Edition 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

LIQUID-PHASE INTERSTITIAL DETECTOR

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.

9th Edition 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

LIQUID-PHASE INTERSTITIAL DETECTOR

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.

9th Edition Issue Date: June 1, 2001

Petro Vend, Inc.

Site Sentinel Models 1, II and III,

(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.

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.

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

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

laws and regulations.

9th Edition Issue Date: June 1, 2001

Petro Vend, Inc.

Site Sentinel Models 1, II and III,

(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.

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.

Petro Vend, Inc. Evaluator: Ken Wilcox Associates

6900 Santa Fe Dr. Tel: (816) 443-2494

Hodgkins, IL 60525-9909 Date of Evaluation: 11/03/00

Tel: (708) 485-4200 
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Issue Date: November 7, 2001

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)

LIQUID-PHASE OUT-OF-TANK PRODUCT DETECTOR

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, #30-3225 unleaded 

gasoline

diesel

Detection time (sec) 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. 

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

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

laws and regulations.

9th Edition Revision Date: November 7, 2001

Petro Vend, Inc.

SiteSentinel Controller with

Hydrocarbon Sensitive Polymer Cables Part #30-3206, #30-3207-nn, #30-3210-nn, 

#30-3219-12

LIQUID-PHASE OUT-OF-TANK PRODUCT DETECTOR

Detector: 

Output type: qualitative

Sampling frequency: continuous

Operating principle: product permeable

Test Results:

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

#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. 

Petro Vend, Inc. 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

Tel: (816) 443-2494

Date of Evaluation: 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.

9th Edition Issue Date: November 7, 2001

Petro Vend, Inc.

SiteSentinel Controller with

Single Float Switches Part #30-3221-1, #30-3221-1A, #30-3221-1B

Brine Reservoir Sensor and Dual Float Sensor Part #30-3221-2

LIQUID-PHASE OUT-OF-TANK PRODUCT DETECTOR

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.

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

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

laws and regulations.

9th Edition Issue Date: November 7, 2001

Petro Vend, Inc.

SiteSentinel Controller with

Vapor Sensor Part #30-3222, Optical Sensor Part #30-3223 

VAPOR-PHASE OUT-OF-TANK DETECTOR

Detector: 

Output type: qualitative

Sampling frequency: continuous

Operating principle: metal oxide semiconductor (Part #30-3222), Optical (Part #30-3223) 

Test Results:

Part #30-3222 Unleaded gasoline diesel water

Detection time (sec) 5.946 30.948 -

Fall time (sec) * ** -

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

*Evaluator notes that because of the geometry of the vapor sensors and their varied installation 

options, the threshold level was not measured.

** Evaluator notes that this sensor resets very slowly and that controller should be adjusted or 

replaced after each alarm.

Specificity Results:

Part #30-3222 responds to hydrocarbons only.

Part #3223 works with any liquid. 

Comments:

Performance of these sensors degrades after exposure to high concentrations of hydrocarbons. 

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

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

laws and regulations.

9th Edition 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 

LIQUID-PHASE INTERSTITIAL DETECTOR

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: (613) 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.

9th Edition Issue Date: August 10, 2001

Pneumercator Company, Inc.

TMS 2000, TMS 3000 with

ES820-100 Non-Discriminating Liquid Sensor, ES820-200 Discriminating Liquid Sensor 

LIQUID-PHASE INTERSTITIAL DETECTOR

Detector: 

Output type: qualitative

Sampling frequency: continuous

Operating principle: optical sensor

Test Results:

ES820-100 Non-Discriminating 

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: (613) 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.

9th Edition Issue Date: November 7, 2001

Precision Tank Service, Inc.

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 flow through 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.

Precision Tank Service, Inc. 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) 892-8600 06/16/00, 08/27/01
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.

9th Edition Issue Date: August 10, 2001

Preferred Utilities Manufacturing Corporation

TG-EL-D3 Controller

with HD-A1 Sensor

LIQUID-PHASE INTERSTITIAL DETECTOR

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 HDA1 transmitter electronics, and the controller.

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

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

laws and regulations.

9th Edition Revision Date: November 7, 2001

Sound Products Manufacturing, Inc. (formerly USTest, 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 regularly 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.

Sound Products Manufacturing, Inc.

(formerly USTest, Inc.)

Evaluator: Ken Wilcox Associates

435 Industrial Parkway Tel: (816) 443-2494

Lafayette, 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.

9th Edition Revision Date: November 7, 2001

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

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.

Sound Products Manufacturing, Inc.

(formerly USTest, Inc.)

Evaluator: Ken Wilcox Associates

435 Industrial Parkway Tel: (816) 443-2494

Lafayette, 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.

9th Edition Revision Date: November 7, 2001

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

UST 2000/LL

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL)

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. (There must be a 

difference of at least 37 inches between groundwater level and product level to 

provide a 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.

Sound Products Manufacturing, Inc.

(formerly USTest, Inc.)

Evaluator: Ken Wilcox Associates

435 Industrial Parkway Tel: (816) 443-2494

Lafayette, LA 70508 Date of Evaluation: 06/09/94

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.

9th Edition Revision Date: November 7, 2001

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

UST 2000/P

VOLUMETRIC TANK TIGHTNESS TEST METHOD (UNDERFILL)

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 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.

Sound Products Manufacturing, Inc.

(formerly USTest, Inc.)

Evaluators: Midwest Research Institute

435 Industrial Parkway Tel: (816) 753-7600

Lafayette, LA 70508 and Ken Wilcox Associates 

Tel: (337) 235-1184 Tel: (816) 443-2494

Dates of Evaluation: 12/05/90 (1000-10000 

gallons), 08/04/92 (10000-45000 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.

9th Edition Issue Date: May 2, 2000

Tanknology - NDE

TLD-1

(for Flexible Pipelines)

LINE TIGHTNESS TEST METHOD

Certification: Leak rate of 0.1 gph with PD = 99.9% 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.

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 50 gallons.

Waiting Time: Average of 1 hour. 

Test Period: 1 to 6 hours. Average is 2 hours 15 minutes.

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 1,280 was used during 

evaluation.

*See glossary.

Tanknology - NDE Evaluator: Ken Wilcox Associates

8900 Shoal Creek Blvd., Building 200 Tel: (816) 443-2494

Austin, TX 78757 Date of Evaluation: 04/30/94

Tel: (877) 368-7215
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: November 6, 2001

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 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 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: 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. 

Comments: Frozen and saturated soil surrounding pipeline may limit effectiveness of 

this test method.

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). 

Tracer Research Corp. Evaluator: Ken Wilcox Associates

3755 N. Business Center Dr. Tel: (816) 443-2494 

Tucson, AZ 85705 Date of Evaluation: 10/04/91

Tel: (800) 394-9929 Evaluator: Control Strategies Engineering

Tel: (602) 682-8726

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.

9th Edition Revision Date: November 6, 2001

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 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: 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. 

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: Frozen and saturated soil above bottom of tank may limit effectiveness of this test 

method.

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). 

Tracer Research Corp. 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

Tel: (602) 682-8726

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.

9th Edition Revision Date: July 31, 2001

Training and Services Corp.

AcuRite 

(for Fiberglass, Steel 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 fiberglass, steel and flexible 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 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

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.

9th Edition Revision Date: October 18, 2001

Triangle Environmental, Inc.

TEI System 5000, Version 1.0

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, either of the following water sensors may be used:

TEI System 5000 water sensor

Minimum of 10 minutes (time begins after sensor is set up and calibrated).

Horner EZ-3 conductivity water sensor

Minimum test time must be calculated using Horner EZ-3 operations manual. Calculation is based on 

tank size, groundwater elevation, and product elevation, but not less than 1 hour.

 

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: Either Triangle or Horner water sensor must be used to detect water ingress.

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 test. 

Horner 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 test.

Groundwater: Depth to groundwater in tank excavation backfill must be determined. If groundwater is above bottom of 

tank, either the TEI System 5000 water sensor or the Horner EZY 3 conductivity water sensor must be 

used and test time extended to allow sufficient time to ensure water ingress detection during test.

Calibration: Acoustic sensor, and TEI System 5000 water sensor or Horner EZY 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.

2525 W. Burbank Blvd. Tel: (213) 723-7181

Burbank, CA 91505 Dates of Evaluation: 02/04/93, 01/20/98

Tel: (818) 840-7020
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

Veeder-Root

TLS-350, 350PC, 350R, 350RPC, 350Plus Line Leak Detector, Series 8475

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification: Leak rate of 3.0 gph with PD = 100% and PFA = 0%. 

Leak rate of 0.2 gph with PD = 100% and PFA = 0%.

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

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

Tel: (816) 443-2494

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.

9th Edition Revision Date: May 25, 2001

Veeder-Root

TLS-350, 350PC, 350R, 350RPC, 350Plus Line Leak Detector, Series 8475

(for Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification: Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak rate of 0.2 gph with PD = 96% and PFA = 4%.

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

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

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

Veeder-Root

TLS 350, 350PC, 350R, 350RPC, 350Plus Line Leak Detector, Series 8484

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification: Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak rate of 0.2 gph with PD = 100% and PFA = 0%. 

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

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 Date of Evaluation: 08/07/91, 12/18/96

Tel: (860) 651-2700
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

Veeder-Root

TLS 350, 350PC, 350R, 350RPC, 350Plus, LLD-300 Line Leak Detector, Series 8484

(for Flexible Pipelines)

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification: Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak rate of 0.2 gph with PD = 100% and PFA = 0%.

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

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 10 psi for leak rate of 3.0 gph.

Tests are conducted at 30 psi for leak rate of 0.2 gph.

Tests are conducted at operating pressure equivalent to 45 psi line for leak rate 

of 0.1 gph.

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: 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: 10/16/95, 01/31/97

Tel: (860) 651-2700
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

Veeder-Root

TLS 350, 350PC, 350R, 350 RPC, 350Plus, LLD-300 Line Leak Detector, Series 8494

Pressurized Line Leak Detector, Series 8494

AUTOMATIC ELECTRONIC LINE LEAK DETECTOR

Certification: Leak rate of 3.0 gph with PD = 100% and PFA = 0%.

Leak rate of 0.2 gph with PD = 100% and PFA = 0%.

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

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, not to exceed 50 psi.

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

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

Veeder-Root

TLS-200, 200i, 250i, 300, 300C, 300i, 350, 350PC, 350R, 350RPC, 350Plus 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.

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

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

Veeder-Root

TLS-200, 200i, 250i, 300, 300C, 300i, 300PC, 350, 350PC, 350R, 350RPC, 350Plus 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.

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

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

Veeder-Root

TLS-200, 200i, 250, 250i, 300, 300C, 300i, 300PC, 350, 350PC, 350R, 350RPC, 350Plus 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.

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

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

Veeder-Root

TLS-250, 250i, 300, 300C, 300i, 300PC, 350, 350PC, 350R, 350RPC, 350Plus 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. 

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

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

Veeder-Root

TLS Series 300, 350, 350R, 350Plus

(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. 

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 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.

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 for leak rate of 0.2 gph.

Minimum detectable change in water level is 0.027 inch for leak rate of 0.1 gph.

Calibration: Thermistors and probe must be checked 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 which routinely contains 

product.

Veeder-Root Evaluator: Ken Wilcox Associates

125 Powder Forest Dr. Tel: (816) 443-2494

Simsbury, CT 06070-7684 Date of Evaluation: 06/29/98

Tel: (860) 651-2700
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

Veeder-Root

TLS Series 300, 350, 350R, 350Plus

(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. 

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 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. 

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 Date of Evaluation: 08/14/98

Tel: (860) 651-2700
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: May 25, 2001

Veeder-Root

TLS-300i, 300J, 350, 350R, 350Plus Monitoring Systems with CSLD 

(Models 8473, 8493 Magnetostrictive Probes)

CONTINUOUS IN-TANK LEAK DETECTION METHOD

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.

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.

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 quantitative result of pass or fail.

Evaluated using both single and manifolded tank systems.

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

Tel: (860) 651-2700
Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the 

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

laws and regulations.

9th Edition Revision Date: October 18, 2001

Veeder-Root

TLS-350 Series with

Interstitial Liquid Sensor 794380-341,

Dispenser Pan Sensor 794380-320,

Discriminating Containment Sump Sensor 794380-350, 

Discriminating Fibretrench Sensor 794380-360, 361, 362

LIQUID-PHASE INTERSTITIAL DETECTOR

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 Sensor 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.

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

Evaluator: Ken Wilcox Associates

Tel: (816) 443-2494

Date of Evaluation: 11/01/00
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.

9th Edition Revision Date: November 6, 2001

Test Method Vendor Equipment Model Evaluator/Date of Evaluation

Bulk Field-Constructed Tank 

Tightness Test Leak 

Detection Method

Engineering Design 

Group, Inc.

EDG XLD 2000 Plus Ken Wilcox Associates

12/22/98

Bulk Field-Constructed Tank 

Tightness Test Leak 

Detection Method

Engineering Design 

Group, Inc.

EDG XLD 2000 Plus with MTS 

DDA Probe (2,100,000 gallons)

Ken Wilcox Associates

10/01/01

Bulk Field-Constructed Tank 

Tightness Test Leak 

Detection Method

Engineering Design 

Group, Inc.

MCG 8100 ATG Ken Wilcox Associates

07/10/97

Bulk Field-Constructed Tank 

Tightness Test Leak 

Detection Method

Engineering Design 

Group, Inc.

Ronan Engineering X-76 CTM 

with MTS level Plus Probe 

(50,000 gallons)

Ken Wilcox Associates

10/01/01

Continuous In-Tank Leak 

Detection Method

INCON Intelligent 

Controls, Inc.

Tank Sentinel ATG with SCALD 

Models TS-1000, TS-1001, TS2000, TS-2001

(TSP-LL2 Probe)

Ken Wilcox Associates

02/23/00

Continuous In-Tank Leak 

Detection Method

Marley Pump Co. ST Series 1400-1800, FMS, 

ATG, LLM Series and ProLink

ADA Technologies, Inc.

11/17/98

Non-Volumetric Tank 

Tightness Test Method

Mass Tech International, 

Ltd.

Mass Tech Remote Spectral 

Analysis

Ken Wilcox Associates

1/02/01

Non-Volumetric Tank 

Tightness Test Method

Mass Tech International, 

Ltd.

Mass Tech Analog Acoustic 

Vacuum Method

Ken Wilcox Associates

1/02/01

Non-Volumetric Tank 

Tightness Test Method

Mesa Engineering Co. Mesa Model Z-D Ken Wilcox Associates

7/17/01
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.

9th Edition Revision Date: November 6, 2001

Test Method Vendor Equipment Model Evaluator/Date of Evaluation

Liquid-Phase Interstitial 

Detector

Mine Safety Appliances Tankgard and Tankgard VIII 

with Universal Reservoir Sensor

Carnegie Mellon Research 

Institute 

10/16/92

Vapor-Phase Out-Of-Tank 

Product Detector

Mine Safety Appliances Tank-Check Carnegie Mellon Research 

Institute 

05/31/91

Liquid-Phase Interstitial 

Detector

Pneumercator Company, 

Inc.

Patriot 7100 Probe using TMS 

2000 and TMS 3000

Ken Wilcox Associates

01/30/01

Liquid-Phase Interstitial 

Detector

Pneumercator Company, 

Inc.

ES 825-200(F) Discriminating 

and ES 825-100(F) NonDiscriminating Sensors as 

Liquid Level Sensors 

Ken Wilcox Associates

08/04/01

Automatic Tank Gauging 

Method

Practical Tank 

Management

MTS Level Sensor ATG Ken Wilcox Associates

3/12/96

Liquid-Phase Interstitial 

Detector

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

Dispenser Containment System

Underwriters Laboratories 

11/12/97

National Technical System 

02/19/1990 & 08/21/01 

Volumetric Tank Tightness 

Test Method

Sound Products 

Manufacturing Inc.

USTest 2001/P (20,000 gallons) Ken Wilcox Associates

10/11/01

Non-Volumetric Tank 

Tightness Test Method 

(Vacuum)

Tanknology - NDE U3 Vacuum Ken Wilcox Associates

06/25/96

Liquid-Phase Interstitial 

Detector

Veeder-Root Discriminating Interstitial Sensor 

794380-343

Ken Wilcox Associates

05/10/01

Liquid-Phase Interstitial 

Detector

Veeder-Root Microsensor 794380-344 Ken Wilcox Associates

05/10/01