Vapor Recovery Certification Procedure

CP - 201

Certification Procedure for Vapor Recovery Systems at 

Gasoline Dispensing Facilities

Adopted: December 9, 1975

Amended: March 30, 1976

Amended: August 9, 1978

Amended: December 4, 1981

Amended: September 1, 1982

Amended: April 12, 1996

Amended: April 28, 2000

Amended: February 1, 2001

Amended: June 1, 2001 

Amended: July 25, 2001

Amended: July 3, 2002

Amended: March 7, 2003

Amended: July 1, 2003

Amended: October 8, 2003

Amended: August 6, 2004

Amended: February 9, 2005

Amended: May 25, 2006 

 Amended: January 9, 2013

Amended: April 23, 2015
CP-201

TABLE OF CONTENTS

Section Title Page

1 GENERAL INFORMATION AND APPLICABILITY ..................................................... 1

1.1 Regulatory Requirements of Other State Agencies ................................................ 1

1.2 Requirement to Comply with All Other Applicable Codes and Regulations .......... 2

2 PERFORMANCE STANDARDS AND SPECIFICATIONS .......................................... 2

2.1 Performance Standards ............................................................................................ 2

2.2 Performance Specifications ...................................................................................... 2

2.3 Innovative Systems ................................................................................................... 2

2.4 Additional or Amended Performance Standards or Performance Specifications . 2

3 PHASE I PERFORMANCE STANDARDS AND SPECIFICATIONS ........................... 6

3.1 Phase I Efficiency/Emission Factor .......................................................................... 7

3.2 Static Pressure Performance .................................................................................... 7

3.3 Phase I Drop-Tubes with Over-Fill Prevention ........................................................ 8

3.4 Phase I Product and Vapor Adaptors ....................................................................... 8

3.5 Pressure Vacuum Vent Valves ................................................................................. 9

3.6 Spill Containers .......................................................................................................... 9

3.7 Connections and Fittings .......................................................................................... 10

3.8 Materials Compatibility with Fuel Blends ................................................................ 10

4 PHASE II PERFORMANCE STANDARDS AND SPECIFICATIONS APPLICABLE 

TO ALL PHASE II VAPOR RECOVERY SYSTEMS ................................................... 12

4.1 Phase II Emission Factor/Efficiency ......................................................................... 13

4.2 Static Pressure Performance .................................................................................... 14

4.3 Spillage ...................................................................................................................... 15

4.4 Compatibility of Phase II Systems with Vehicles Equipped with ORVR Systems 16

4.5 Compatibility of Phase II Systems with Phase I Systems ....................................... 16

4.6 Underground Storage Tank Pressure Criteria ......................................................... 16

4.7 Nozzle Criteria ............................................................................................................ 17

4.8 Liquid Retention ........................................................................................................ 18

4.9 Nozzle/Dispenser Compatibility ................................................................................ 18

4.10 Unihose Multi-Product Dispenser (MPD) Configuration ......................................... 18

4.11 Vapor Return Piping .................................................................................................. 18

4.12 Liquid Condensate Traps .......................................................................................... 19

4.13 Connections and Fittings .......................................................................................... 19

5 PHASE II PERFORMANCE STANDARDS AND SPECIFICATIONS APPLICABLE 

TO BALANCE VAPOR RECOVERY SYSTEMS ......................................................... 21

5.1 Balance Nozzle Criteria ............................................................................................. 22

5.2 Dynamic Pressure Drop Criteria for Balance Systems ........................................... 22

5.3 Liquid Removal Systems .......................................................................................... 23

6 PHASE II PERFORMANCE STANDARDS AND SPECIFICATIONS APPLICABLE 

TO ALL ASSIST VAPOR RECOVERY SYSTEMS ..................................................... 23

6.1 Nozzle Criteria ............................................................................................................ 23

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Section Title Page

6.2 Air to Liquid Ratio ...................................................................................................... 24

7 PHASE II PERFORMANCE STANDARDS AND SPECIFICATIONS APPLICABLE 

TO ASSIST SYSTEMS UTILIZING A CENTRAL VACUUM UNIT .............................. 24

7.1 Vacuum Levels Generated by the Collection Device .............................................. 25

7.2 Maximum Number of Refueling Points per Vacuum Device ................................... 25

8 PHASE II PERFORMANCE STANDARDS AND SPECIFICATIONS APPLICABLE 

TO ASSIST SYSTEMS UTILIZING A DESTRUCTIVE OR NON-DESTRUCTIVE 

PROCESSOR ............................................................................................................. 25

8.1 Processor Emission Factor ...................................................................................... 26

8.2 Hazardous Air Pollutants from Destructive Processors ......................................... 26

8.3 Maximum Hydrocarbon Feedrate to Processor........................................................ 26

8.4 Typical Load on the Processor ................................................................................. 26

8.5 Processor Operation Time......................................................................................... 27

9 IN-STATION DIAGNOSTIC SYSTEMS ....................................................................... 27

9.1 General Requirements .............................................................................................. 27

9.2 Monitoring Requirements ......................................................................................... 28

9.3 Records ...................................................................................................................... 31

9.4 Tampering Protection ................................................................................................ 32

9.5 Readiness/Function Code ......................................................................................... 32

9.6 Stored Vapor Recovery System Conditions ............................................................ 32

9.7 Challenge Mode Testing ........................................................................................... 33

9.8 Electronic Access ...................................................................................................... 33

10 CERTIFICATION OF VAPOR RECOVERY SYSTEMS................................................ 33

11 APPLICATION PROCESS .......................................................................................... 34

11.1 Description of Vapor Recovery System ................................................................... 35

11.2 Description of In-Station Diagnostics ...................................................................... 37

11.3 Compatibility .............................................................................................................. 37

11.4 Reliability of the System ........................................................................................... 38

11.5 Installation, Operation and Maintenance of the System ......................................... 38

11.6 Evidence of Financial Responsibility ....................................................................... 39

11.7 Warranty ..................................................................................................................... 39

11.8 Test Station ................................................................................................................ 39

11.9 Notification of Certified System Component Manufacturers ............................. 39

11.10 Equipment Defect Identification and Test Protocols ............................................... 40

11.11 Challenge Modes and Test Protocols ....................................................................... 40

11.12 Other Information ...................................................................................................... 40

12 EVALUATION OF THE APPLICATION ....................................................................... 40

12.1 Performance Standards and Specifications ............................................................ 41

12.2 Bench and Operational Testing Results .................................................................. 41

12.3 Evaluation of System Concept ................................................................................. 41

12.4 Materials Specifications and Compatibility with Fuel Formulations ...................... 41

12.5 Installation, Operation and Maintenance Manuals .................................................. 41

12.6 Equipment Defect Identification................................................................................ 41

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Section Title Page

12.7 Challenge Mode Determination ................................................................................. 42

13 VAPOR RECOVERY SYSTEM CERTIFICATION TESTING ....................................... 42

13.1 Test Site for Field Testing of Vapor Recovery Systems ......................................... 43

13.2 Bench Testing of Components ................................................................................. 44

13.3 Operational test of at Least 180 Days ...................................................................... 44

13.4 Equipment Defect and Challenge Mode Testing ...................................................... 45

13.5 Efficiency and/or Emission Factor Test ................................................................... 45

13.6 Vehicle Matrix ............................................................................................................ 46

14 ALTERNATE TEST PROCEDURES AND INSPECTION PROCEDURES .................. 46

14.1 Alternate Test Procedures for Certification Testing ............................................... 47

14.2 Request for Approval of Alternate Test Procedure ................................................. 47

14.3 Response to Request ................................................................................................ 47

14.4 Testing of Alternate Test Procedures ...................................................................... 47

14.5 Documentation of Alternate Test Procedures ......................................................... 47

14.6 Inspection Procedures .............................................................................................. 48

15 DOCUMENTATION OF CERTIFICATION ................................................................... 48

15.1 Executive Order.......................................................................................................... 48

15.2 Summary of Certification Process ............................................................................ 48

16 DURATION AND CONDITIONS OF CERTIFICATION ................................................ 48

16.1 Duration of System Certification .............................................................................. 49

16.2 One Vapor Recovery System per UST System......................................................... 49

16.3 Certification Not Transferable .................................................................................. 49

16.4 Financial Responsibility............................................................................................. 49

16.5 Warranty...................................................................................................................... 50

16.6 Installation, Operation and Maintenance of the System .......................................... 50

16.7 Identification of System Components....................................................................... 51

16.8 Compliance Enforcement............................................................................. 51

16.9 Revocation of Certification ....................................................................................... 51

17 CERTIFICATION RENEWAL....................................................................................... 51

17.1 Request for Renewal ................................................................................................. 52

17.2 Review Request ......................................................................................................... 52

17.3 Evaluation of System Deficiencies ........................................................................... 53

17.4 Letter of Intent ........................................................................................................... 53

17.5 Renewal of Executive Order ..................................................................................... 54

17.6 Denial of Executive Order Renewal .......................................................................... 54

18 AMENDMENTS TO EXECUTIVE ORDERS................................................................. 54

18.1 Request for Amendment ........................................................................................... 55

18.2 Review of Request ..................................................................................................... 55

18.3 Testing ....................................................................................................................... 57

18.4 Letter of Intent ........................................................................................................... 57

18.5 Issuance of Executive Order ..................................................................................... 57

19

REPLACEMENT OF COMPONENTS OR PARTS OF A SYSTEM WITH A 

TERMINATED, REVOKED, SUPERSEDED OR EXPIRED CERTIFICATION ............. 57

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Section Title Page

19.1 Component and Replacement Parts................................................................ 57

19.2 Components or Replacement Part Not Meeting Specifications........................... 58

19.3 Components or Part Not Certified with System and Not Meeting Specifications... 58

19.4 Procedure for Approval of Replacement Part................................................... 58

20 REQUIREMENTS FOR, AND CERTIFICATION OF, LOW PERMEATION HOSES..... 59

20.1 Request for Certification................................................................................ 59

20.2 Hose Lengths............................................................................................... 60

20.3 Identification of Certified Hose....................................................................... 60

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LIST OF TABLES

Table Title Page

2-1 Effective and Operative Dates for Phase I and Phase II Vapor Recovery 

Performance Standards and Specifications ............................................................ 5

3-1 Phase I Performance Standards and Specifications

Applicable to All Phase I Vapor Recovery Systems ................................................ 6

4-1 Phase II Performance Standards and Specifications

Applicable to All Phase II Vapor Recovery Systems ............................................... 12

5-1 Phase II Performance Standards and Specifications

Applicable to Phase II Balance Vapor Recovery Systems ...................................... 21

6-1 Phase II Performance Standards and Specifications

Applicable to All Phase II Vacuum Assist Systems ................................................ 23

7-1 Phase II Performance Standards and Specifications

Applicable to All Phase II Assist Systems Utilizing a Central Vacuum Unit .......... 24

8-1 Phase II Performance Standards and Specifications

Applicable to All Phase II Assist Systems Utilizing a Destructive Processor ....... 25

8-2 Phase II Performance Standards and Specifications

Applicable to All Phase II Assist Systems Utilizing a Non-Destructive Processor 26

11-1 Estimated Timeline For the Certification Application Process ...............................

 

35

17-1 Estimated Timeline for the Renewal Process .......................................................... 54

LIST OF FIGURES

Figure Title Page

3A Phase I Product Adaptor Cam and Groove Standard ............................................. 11

3B Phase I Vapor Recovery Adaptor Cam and Groove Standard................................. 11

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CP-201, Page v
California Environmental Protection Agency

Air Resources Board

Vapor Recovery Certification Procedure

CP-201

Certification Procedure for Vapor Recovery Systems at

Gasoline Dispensing Facilities

A set of definitions common to all Certification and Test Procedures are in:

D-200 Definitions for Vapor Recovery Procedures

All section references are to the Health and Safety Code unless otherwise stated.

1. GENERAL INFORMATION AND APPLICABILITY

This document describes the procedure for evaluating and certifying Phase I and Phase II 

vapor recovery systems, and components, used at Gasoline Dispensing Facilities (GDF)

with underground storage tanks. An ARB Executive Order certifying the system shall be 

issued only after all of the applicable certification requirements have been successfully 

completed.

This Certification Procedure, CP-201, is adopted pursuant to Section 41954 of the California 

Health and Safety Code (CH&SC) and is applicable to vapor recovery systems installed at 

gasoline dispensing facilities for controlling gasoline vapors emitted during the fueling of 

storage tanks (Phase I) and the refueling of vehicle fuel tanks (Phase II). Vapor recovery 

systems are complete systems and shall include all associated dispensers, piping, nozzles, 

couplers, processing units, underground tanks and any other equipment or components 

necessary for the control of gasoline vapors during Phase I or Phase II refueling operations 

at GDF.

1.1 Regulatory Requirements of Other State Agencies

As required pursuant to Sections 25290.1.2, 41955 and 41957 of the CH&SC, the 

Executive Officer shall coordinate this certification procedure with:

1.1.1 Department of Food and Agriculture,

Division of Measurement Standards (DMS)

1.1.2 Department of Forestry and Fire Protection,

Office of the State Fire Marshall (SFM) 

1.1.3 Department of Industrial Relations, 

Division of Occupational Safety and Health (DOSH) 

1.1.4 State Water Resources Control Board (SWRCB)

Division of Water Quality

Prior to certification of the vapor recovery system by the Executive Officer, the 

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CP-201, Page 1
applicant shall submit plans and specifications for the system to each of these 

agencies. Certification testing by these agencies may be conducted concurrently with 

ARB certification testing; however, the approval of the SFM, DMS, DOSH, and a 

determination by the SWRCB shall be a precondition to certification by ARB. The 

applicant is responsible for providing documentation of these approvals and

determinations to ARB.

1.2 Requirement to Comply with All Other Applicable Codes and Regulations

Certification of a system by the Executive Officer does not exempt the system from 

compliance with other applicable federal, state, and local codes and regulations.

2. PERFORMANCE STANDARDS AND SPECIFICATIONS

2.1 Performance Standards

A performance standard defines the minimum performance requirements for 

certification of any system, including associated components. An applicant may 

request certification to a performance standard that is more stringent than the

minimum performance standard specified in CP-201. Ongoing compliance with all 

applicable performance standards, including any more stringent standards requested 

by the applicant, shall be demonstrated throughout certification testing. 

2.2 Performance Specifications

A performance specification is an engineering requirement that relates to the proper 

operation of a specific system or component thereof. In addition to the performance 

specifications mandated in CP-201, an applicant may specify additional performance 

specifications for a system or component. An applicant may request certification to a 

performance specification that is more stringent than the minimum performance 

specification in CP-201. Ongoing compliance with all applicable performance 

specifications, including any more stringent specifications requested by the applicant,

shall be demonstrated throughout certification testing. 

2.3 Innovative System

The innovative system concept provides flexibility in the design of vapor recovery 

systems. A vapor recovery system that fails to comply with an identified performance 

standard or specification may qualify for consideration as an innovative system, 

provided that the system meets the primary emission factor/efficiency, complies with 

all other applicable requirements of certification, and the Executive Officer determines 

that the emission benefits of the innovation are greater than the consequences of 

failing to meet the identified standard or specification.

2.4 Additional or Amended Performance Standards or Performance Specifications

Whenever these Certification Procedures are amended to include additional or 

amended performance standards, any system that is certified as of the effective date 

of additional or amended standards shall remain certified until the operative date. 

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Systems installed before the operative date of additional or amended standards may 

remain in use for the remainder of their useful life or for up to four years after the 

effective date of the new standard, whichever is shorter, provided the requirements of 

section 19 are met. 

Whenever these Certification Procedures are amended to include additional or 

amended performance specifications, a system shall remain certified until the

Executive Order expiration date. A system that was installed before the operative date 

of additional or amended performance specifications may remain in use subject to the 

requirements of section 17.

2.4.1 The effective and operative dates of adoption for all performance standards 

and specifications contained herein are specified in Table 2-1. 

2.4.2 The operative dates of performance standards shall be the effective date of 

adoption of amended or additional performance standards, except as otherwise 

specified in Table 2-1. Certifications shall terminate on the operative date of 

amended or additional performance standards unless the Executive Officer 

determines that the system meets the amended or additional performance 

standards. Upon the operative date of amended or additional performance 

standards, only systems complying with the amended or additional

performance standards may be installed. 

2.4.3 The operative dates of performance specifications are listed in Table 2-1. As of 

the operative date of amended or additional performance specifications, only 

systems complying with the amended or additional performance specifications 

may be installed. 

2.4.4 When the Executive Officer determines that no Phase I or Phase II system has 

been certified or will not be commercially available by the operative dates 

specified in Table 2-1 of CP-201, the Executive Officer shall extend the 

operative date and may extend the effective date of amended or additional

performance standards or specifications. If there is only one certified system to 

meet amended or additional standards, that system is considered to be

commercially available if that system can be shipped within eight weeks of the 

receipt of an order by the equipment manufacturer.

2.4.5 The Executive Officer may determine that a system certified prior to the 

operative date meets the amended or additional performance standards or 

specifications. In determining whether a previously certified system conforms 

with any additional or amended performance standards, specifications or other

requirements adopted subsequent to certification of the system, the Executive 

Officer may consider any appropriate information, including data obtained in 

the previous certification testing of the system in lieu of new testing. 

2.4.6 Gasoline Dispensing Facilities in districts that ARB determines are in 

attainment with the state standard for Ozone are exempted from the Enhanced 

Vapor Recovery performance standards and specifications set forth in sections 

3 through 9, inclusive, with the exception of the requirement for compatibility 

with vehicles that are equipped with Onboard Refueling Vapor Recovery 

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CP-201, Page 3
(ORVR) systems as specified in subsection 4.4. New GDFs, and those 

undergoing major modifications, are not exempt. If exempt facilities become 

subject to additional standards due to a subsequent reclassification of their 

district from attainment to non-attainment, the facilities will have four years to 

comply.

2.4.7 The gasoline dispensing facility’s gasoline throughput for calendar year 2003 

shall be used for determining compliance with the Onboard Refueling Vapor 

Recovery (ORVR) requirements in Table 2-1.

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Table 2-1

Effective and Operative Dates for Phase I and Phase II Vapor Recovery

Performance Standards and Specifications

Performance

Type Requirement Sec.

Effective

Date

Operative

Date

P/V Vent Valve As specified in Table 3-1 3.5 Not applicable July 1, 2007

All other Phase I 

Standards and 

Specifications

As specified in Table 3-1 3 April 1, 2001 July 1, 2001

ORVR 

Compatibility for 

GDF > 2.0 million 

gal/yr throughput1

As specified in section 2.4.7 and 

section 4.4 4.4 September 1, 

2001 April 1, 2003

ORVR 

Compatibility for 

GDF ≥ 1.0 million 

gal/yr throughput1

As specified in section 2.4.7 and 

section 4.4 4.4 January 1, 2002 April 1, 2003

ORVR 

Compatibility for 

GDF < 1.0 million 

gal/yr throughput1

As specified in section 2.4.7 and 

section 4.4 4.4 March 1, 2002 April 1, 2003

Nozzle Criteria Post-Refueling Drips 

≤ 3 drop/refueling 4.7 April 1, 2005 April 1, 2005

Liquid Retention ≤ 350 ml/1,000 gals. 4.8 April 1, 2001 July 1, 2001

Liquid Retention

Nozzle Spitting

≤ 100 ml/1,000 gals.

≤ 1.0 ml /nozzle/fueling

4.8 April 1, 2005 April 1, 2005

Spillage (including

drips from spout) ≤ 0.24 pounds/1,000 gallons 4.3 April 1, 2005 April 1, 2005

For GDF > 1.8 mil. 

gal/yr. ISD Requirements 9 September 1, 2005

September 1, 

2005

For GDF > 

600,000 gal/yr.2 ISD Requirements 9.1 September 1, 2006

September 1, 

2006

Unihose One Hose/Nozzle per Dispenser 

Side 4.10 Not applicable April 1, 2003

All other Phase II

Standards and 

Specifications

As specified in

Tables 4-1 through 8-2.

4,5,

6,7,8 April 1, 2005 April 1, 2005

Low Permeation 

Hoses

Permeation rate ≤ 10.0 g/m2/day as 

determined by UL 330 (7th ed.) 20.1

Date when the 

first applicable 

low permeation 

hose is certified

Same as the 

effective date

1 Effective January 1, 2001, state law requires the certification of only those systems that are ORVR 

compatible (Health and Safety Code section 41954, as amended by Chapter 729, Statutes of 2000; Senate 

Bill 1300).

2 GDF ≤ 600,000 gal/yr are exempted from ISD requirements.

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3. PHASE I PERFORMANCE STANDARDS AND SPECIFICATIONS

Table 3-1 summarizes the Phase I Performance Standards and Specifications applicable to 

all Phase I vapor recovery systems.

Table 3-1

Phase I Performance Standards and Specifications

APPLICABLE TO ALL PHASE I VAPOR RECOVERY SYSTEMS

Performance Type Requirement Sec. Std.

Spec.

Test

Procedure

Phase I Efficiency ≥ 98.0% 3.1 Std. TP-201.1

TP-201.1A

Phase I Emission 

Factor HC ≤ 0.15 pounds/1,000 gallons 3.1 Std. TP-201.1A

Static Pressure 

Performance In accordance with section 3.2 3.2 Std. TP-201.3

Pressure Integrity of 

Drop-Tube with Overfill 

Prevention

≤ 0.17 CFH at 2.0 inches H2O 3.3 Spec. TP-201.1D

Phase I Product and 

Vapor Adaptor/Delivery 

Elbow Connections

Rotatable 360o, or equivalent 3.4 Spec.

TP-201.1B

and 

Eng. Eval.

Phase I Product 

Adaptor

Cam and Groove

As shown in Figure 3A 3.4 Spec. Micrometer

Phase I Vapor 

Recovery Adaptor 

Cam and Groove

CID A-A-59326

(As shown in Figure 3B) 3.4 Spec. Micrometer

Phase I Vapor Adaptor Poppetted 3.4 Spec. Testing and

Eng. Eval.

Phase I Vapor Adaptor No Indication of Leaks Using Liquid Leak

Detection Solution (LDS) or Bagging 3.4 Spec. LDS or

Bagging

Phase I Product and

Vapor Adaptors

≤ 108 pound-inch (9 pound-foot)

Static Torque 3.4 Spec. TP-201.1B

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Table 3-1 (continued)

Phase I Performance Standards and Specifications

APPLICABLE TO ALL PHASE I VAPOR RECOVERY SYSTEMS

Performance Type Requirement Sec. Std.

Spec.

Test

Procedure

UST Vent Pipe 

Pressure/Vacuum 

Valves

Pressure Settings

2.5 to 6.0 inches H2O Positive Pressure

6.0 to 10.0 inches H2O Negative 

Pressure

Leakrate at +2.0 inches H2O ≤ 0.17 CFH

Leakrate at -4.0 inches H2O ≤ 0.63 CFH

3.5 Spec. TP-201.1E 

CERT

Spill Container

Drain Valves Leakrate ≤ 0.17 CFH at +2.0 inches H2O 3.6 Spec.

TP-201.2B

TP-201.1C

TP-201.1D

Vapor Connectors and 

Fittings

No Indication of Leaks Using Liquid Leak 

Detection Solution (LDS) or Bagging 3.7 Spec.

LDS or 

Bagging

Compatibility with 

Fuel Blends

Materials shall be compatible with 

approved fuel blends 3.8 Spec. Testing and

Eng. Eval.

3.1 Phase I Efficiency/Emission Factor

3.1.1 The minimum volumetric efficiency of Phase I systems shall be 98.0%. This 

shall be determined in accordance with TP-201.1 (Volumetric Efficiency of 

Phase I Systems at Dispensing Facilities). 

3.1.2 The hydrocarbon emission factor for systems with processors shall not exceed 

0.15 pounds per 1,000 gallons dispensed. This shall be determined in 

accordance with TP-201.1A (Emission Factor for Phase I Systems at 

Dispensing Facilities). 

3.2 Static Pressure Performance

The static pressure performance of Phase I vapor recovery systems not associated 

with Phase II systems shall be determined in accordance with TP-201.3 

(Determination of 2 Inch WC Static Pressure Performance of Vapor Recovery Systems 

of Dispensing Facilities).

3.2.1 All Phase I systems shall be capable of meeting the performance standard in 

accordance with Equation 3-1. 

3.2.2 The minimum allowable five-minute final pressure, with an initial pressure of 

two (2.00) inches H2O, shall be calculated as follows: 

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[Equation 3-1]

P e f

V =

−

2

500 . 887

Where:

Pf = The minimum allowable five-minute final pressure, inches H2O

V = The total ullage affected by the test, gallons

e = A dimensionless constant approximately equal to 2.718

2 = The initial starting pressure, inches H2O

3.3 Phase I Drop-Tubes with Over-Fill Prevention Devices

Phase I drop-tube over-fill prevention devices shall have a leak rate not to exceed 0.17 

cubic feet per hour (CFH) at a pressure of two inches water column (2.0” H2O). The 

leak rate shall be determined in accordance with TP-201.1D (Leak Rate of Drop Tube 

Overfill Prevention Devices and Spill Container Drain Valves). Drop-tubes that do not 

have an over-fill prevention device shall not leak.

3.4 Phase I Vapor Recovery and Product Adaptors

3.4.1 The vapor recovery and product adaptors shall not leak. The vapor recovery 

and product adaptors, and the method of connection with the delivery elbow, 

shall be designed so as to prevent the over-tightening or loosening of fittings 

during normal delivery operations. This may be accomplished by installing a 

swivel connection on either the storage tank (rotatable adaptor) or delivery 

elbow side of the equipment, or by anchoring the product and vapor adaptors in 

such a way that they are not rotated during deliveries, provided the anchoring 

mechanism does not contribute undue stress to other tank connections. If a 

delivery elbow with a swivel connection is the preferred method, only cargo 

tank trucks with those elbows shall deliver to the facility. The adaptors at such 

a facility shall be incompatible with a delivery elbow that does not have a 

swivel.

3.4.2 Phase I product adaptors shall be manufactured in accordance with the cam 

and groove specification as shown in Figure 3A. Phase I vapor recovery 

adaptors shall be manufactured in accordance with the cam and groove 

specification as specified in the Commercial Item Description CID A-A-59326 

(shown in Figure 3B). These specifications shall be applicable only to new 

adaptors and shall not be applied to in-use adaptors.

3.4.3 Phase I vapor recovery adaptors shall have a poppet. The poppet shall not 

leak when closed. The absence of vapor leaks may be verified by the use of 

commercial liquid leak detection solution, or by bagging, when the vapor 

containment space of the underground storage tank is subjected to a non-zero 

gauge pressure. (Note: leak detection solution will detect leaks only when 

positive gauge pressure exists.) 

3.4.4 The static torque of product and vapor recovery adaptors shall not exceed 108 

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CP-201, Page 8
pound-inch (9 pound-foot) when measured in accordance with TP-201.1B.

3.5 Pressure/Vacuum Vent Valves

The Executive Officer shall certify only those vapor recovery systems equipped with a 

pressure/vacuum (P/V) valve(s) on the underground storage tank vent pipe(s). 

Verification of the P/V valve requirements set forth below shall be determined by TP201.1E CERT, (Leak Rate and Cracking Pressure of Pressure/Vacuum Vent Valves).

3.5.1 The pressure specifications for P/V valves shall be: 

Positive pressure setting of 2.5 to 6.0 inches H2O.

Negative pressure setting of 6.0 to 10.0 inches H2O.

3.5.2 The total leak rates for P/V valves, shall be less than or equal to: 

0.17 CFH at +2.0 inches H2O.

0.63 CFH at -4.0 inches H2O.

3.5.3 The total leakrate of all P/V valves certified for use with any vapor recovery 

system shall not exceed 0.17 CFH at 2.0 inches H2O or 0.63 CFH at -4.0 

inches H2O. Applicants may request to certify a system for use with multiple 

P/V valves by choosing P/V valves certified to more restrictive leak rate

performance specifications. The applicant shall state in the certification 

application the leak rates to which P/V valves are to be certified. All individual 

valves shall be tested and certified to those stated leak rate specifications.

3.5.4 Phase I Certification test sites shall be configured with a minimum of three P/V 

valves (i.e., for representativeness), each P/V valve to be configured with an 

associated ball valve. 

 3.6 Spill Containers

3.6.1 Phase I spill container drain valves shall not exceed a leak rate of 0.17 CFH at 

2.0 inches H2O. Spill containers with cover-actuated drain valves shall be 

tested both with the lid installed and with the lid removed. The leak rate shall be 

determined in accordance with TP-201.2B (Pressure Integrity of Vapor 

Recovery Equipment). Phase I configurations installed so that liquid drained 

through the drain valve drains directly into the drop tube rather than the UST 

ullage shall be tested in accordance with TP-201.1C (Leak Rate of Drop 

Tube/Drain Valve Assembly) or TP-201.1D (Leak Rate of Drop Tube Overfill 

Prevention Device and Spill Container Drain Valves), whichever is applicable.

3.6.2 Drain valves shall not be allowed in spill containers used exclusively for Phase 

I vapor connections unless required by other applicable regulations. 

3.6.3 Spill Containers shall be maintained in accordance with all applicable 

requirements. 

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3.7 Vapor Connections and Fittings

All vapor connections and fittings not specifically certified with an allowable leakrate 

shall not leak. The absence of vapor leaks may be verified by the use of commercial 

liquid leak detection solution, or by bagging individual components, when the vapor 

containment space of the underground storage tank is subjected to a non-zero gauge 

pressure. (Note: leak detection solution will detect leaks only when positive gauge 

pressure exists.) The absence of liquid leaks may be verified by visual inspection for 

seepage or drips.

3.8 Materials Compatibility with Fuel Blends

Vapor recovery systems and components shall be compatible with any and all fuel 

blends in common use in California, including seasonal changes, and approved for use 

as specified in title 13, CCR, section 2260 et seq. Applicants for certification may 

request limited certification for use with only specified fuel blends. Such fuel-specific 

certifications shall clearly specify the limits and restrictions of the certification.

California Air Resources Board April 23, 2015

CP-201, Page 10
Figure 3A

Phase I Product Adaptor Cam and Groove Specification

Figure 3B

Phase I Vapor Recovery Adaptor Cam and Groove Specification

63

125

63

UNLESS OTHERWISE SPECIFIED

63

125

125

63

125

63

63

125

125

125

UNLESS OTHERWISE SPECIFIED

California Air Resources Board April 23, 2015

CP-201, Page 11
4. PHASE II PERFORMANCE STANDARDS AND SPECIFICATIONS

APPLICABLE TO ALL PHASE II VAPOR RECOVERY SYSTEMS

Table 4-1 summarizes the Phase II Performance Standards and Specifications applicable to 

all Phase II vapor recovery systems. Phase II vapor recovery systems shall be certified only 

in facilities equipped with a certified Phase I system. 

Table 4-1

Phase II Performance Standards and Specifications

APPLICABLE TO ALL PHASE II VAPOR RECOVERY SYSTEMS

Performance Type Requirement Sec. Std

Spec.

Test

Procedure

Phase II Emission Factor 

Includes:

Refueling and Vent 

Emissions

Pressure-Related Fugitives

Summer Fuel: 95% Efficiency and

HC ≤ 0.38 pounds/1,000 gallons

Winter Fuel: 95% Efficiency or

HC ≤ 0.38 pounds/1,000 gallons

4.1 Std.

TP-201.2

TP-201.2A

TP-201.2F

Static Pressure 

Performance In accordance with Section 4.2 4.2 Std. TP-201.3

Spillage

Including Drips from Spout ≤ 0.24 pounds/1,000 gallons 4.3 Std. TP-201.2C

ORVR Compatibility

Applicant shall develop a test procedure 

to demonstrate ORVR compatibility when 

requested by the Executive Officer. 4.4

Std.

Approved

Test 

Procedure

Developed 

by Mfg.

Liquid Retention

Nozzle “Spitting”

≤ 100 ml/1,000 gallons

≤ 1.0 ml per nozzle per test 4.8 Std. TP-201.2E

ISD See Section 9 9 Std. TP-201.2I

Low Permeation Hoses

Permeation Rate ≤ 10.0 g/m2

/day

as Determined by UL 330 (7th ed.)

20 Std. UL 330

(7th ed.)

Phase II Compatibility

with Phase I Systems See Section 4.5 4.5 Spec. Testing andEng. Eval.

UST Pressure Criteria

(30 day rolling average)

Daily Average Pressure ≤ +0.25 in. H2O

Daily High Pressure ≤ +1.50 in. H2O 4.6 Spec. TP-201.7

Nozzle Criteria

Each Phase II Nozzle Shall:

Post-Refueling Drips ≤ 3 Drops/Refueling

Comply with dimensions specified in 

section 4.7.3.

Be capable of fueling any vehicle that can 

be fueled with a conventional nozzle

4.7 Spec.

TP-201.2D

Engineering

Evaluation

California Air Resources Board April 23, 2015

CP-201, Page 12
Table 4-1 (continued)

Phase II Performance Standards and Specifications

APPLICABLE TO ALL PHASE II VAPOR RECOVERY SYSTEMS

Performance Type Requirement Sec. Std

Spec

.

Test

Procedure

Nozzle/Dispenser

Compatibility

Vapor Check Valve Closed When Hung

Hold-open Latch Disengaged When Hung

4.9 Spec. Testing and

Eng. Eval.

Unihose MPD Configuration One Hose/Nozzle per Dispenser Side 4.10 Spec. Testing and

Eng. Eval.

Phase II Vapor Riser Minimum 1 Inch Nominal ID 4.11 Spec. Testing and

Eng. Eval.

Vapor Return Piping

No Liquid or Fixed Blockage

Minimum 3 Inch Nominal ID after First 

Manifold

Recommended Slope 1⁄4 Inch Per Foot

Minimum Slope 1/8 Inch Per Foot

4.11 Spec. Testing and

Eng. Eval.

Vapor Return Piping Rigidity Rigid Piping, or Equivalent

Bend Radius Exceeds 6 feet 4.11 Spec. TP-201.2G

Vapor Return Pipe Runs

Maximum Allowable Lengths of Pipe 

Runs Shall Be Established During the 

Certification Process

4.11 Spec. Testing and

Eng. Eval.

Liquid Condensate Traps Shall have Automatic Evacuation System 4.12 Spec. Testing and

Eng. Eval.

Connectors and Fittings No Indication of Vapor Leaks with Liquid 

Leak Detection Solution (LDS) or Bagging

4.13 Spec. LDS or 

Bagging

4.1 Phase II Emission Factor/Efficiency

4.1.1 The Hydrocarbon emission factor and/or efficiency for Phase II vapor recovery 

systems shall be determined as follows:

When testing conducted with gasoline meeting the requirements for summer 

fuel:

95% Efficiency and

Hydrocarbon emission factor not to exceed 0.38 pounds/1,000 gallons.

When testing conducted with gasoline meeting the requirements for winter fuel:

95% Efficiency or

Hydrocarbon emission factor not to exceed 0.38 pounds/1,000 gallons.

Compliance with the emission factor and the efficiency standards shall be 

demonstrated when calculated for a test population consisting of 100 nonORVR vehicles, selected according to TP-201.2A. 

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CP-201, Page 13
4.1.2 The emission factor and/or efficiency shall be determined in accordance with 

TP-201.2 (Efficiency and Emission Factor for Phase II Systems) and shall 

include all refueling emissions, underground storage tank vent emissions and 

pressure-related fugitive emissions. Pressure-related fugitive emissions shall 

be determined in accordance with TP-201.2F (Pressure-Related Fugitive 

Emissions). Phase II systems that have underground storage tank (UST) 

pressures sufficient to cause potential fugitive emissions that exceed fifty 

percent (50%) of the maximum allowable emission factor shall not be certified.

4.2 Static Pressure Performance

The static pressure performance of Phase II systems, including the associated Phase I 

system, shall be determined in accordance with TP-201.3 (Determination of 2 Inch WC 

Static Pressure Performance of Vapor Recovery Systems of Dispensing Facilities).

4.2.1 All Phase II vapor recovery systems shall be capable of meeting the 

performance standard in accordance with Equation 4-1 or 4-2.

4.2.2 For Phase II Balance Systems, the minimum allowable five-minute final 

pressure, with an initial pressure of two (2.0) inches H2O, shall be calculated 

as follows: 

[Equation 4-1]

P e f

V =

−

2

760 . 490

if N = 1-6

P e f

V =

−

2

792 . 196

if N = 7-12

P e f

V =

−

2

824 . 023

if N = 13-18

P e f

V =

−

2

855 . 974

if N = 19-24

P e f

V =

−

2

888 . 047

if N > 24

Where:

N = The number of affected nozzles. For manifolded systems, N equals 

the total number of nozzles. For dedicated plumbing configurations, N 

equals the number of nozzles serviced by the tank being tested.

Pf = The minimum allowable five-minute final pressure, inches H2O

V = The total ullage affected by the test, gallons

e = A dimensionless constant approximately equal to 2.718

2 = The initial starting pressure, inches H2O

4.2.3 For Phase II Vacuum Assist Systems, the minimum allowable five-minute final 

pressure, with an initial pressure of two (2.0) inches H2O, shall be calculated 

as follows: 

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CP-201, Page 14
[Equation 4-2]

P e f

V =

−

2

500 . 887

if N = 1-6

P e f

V =

−

2

531 . 614

if N = 7-12

P e f

V =

−

2

562 . 455

if N = 13-18

P e f

V =

−

2

593 . 412

if N = 19-24

P e f

V =

−

2

624 . 483

if N > 24

Where:

N = The number of affected nozzles. For manifolded systems, N equals 

the total number of nozzles. For dedicated plumbing configurations, N 

equals the number of nozzles serviced by the tank being tested.

Pf = The minimum allowable five-minute final pressure, inches H2O

V = The total ullage affected by the test, gallons

e = A dimensionless constant approximately equal to 2.718

2 = The initial starting pressure, inches H2O

4.2.4 Under no circumstances shall Phase II components be partially or completely 

immersed in water to check for pressure integrity. 

4.3 Spillage

The Executive Officer shall not certify vapor recovery systems that cause excessive 

spillage. 

4.3.1 Spillage shall be determined in accordance with TP-201.2C (Spillage from 

Phase II Systems). The emission factor for spillage shall not exceed 0.24

pounds/1000 gallons dispensed, for each of the following three categories:

All refueling events;

Refueling operations terminated before activation of the primary shutoff; 

and

Refueling events terminated by activation of the primary shutoff.

4.3.2 The number of self-service refueling operations observed during certification 

testing of any system for spillage shall be not less than:

1,000 refueling operations [not including topoffs]; and 

400 fill-ups [terminated by full tank shut-off, not including topoffs].

4.3.3 Increased spillage resulting from one top-off following the first activation of the 

automatic (primary) shutoff mechanism shall be subjected to challenge mode 

testing. Nozzles that result in excessive spillage following one top off shall not 

be certified.

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CP-201, Page 15
4.4 Compatibility of Phase II Systems with Vehicles Equipped with ORVR Systems

The applicant, when requested by the Executive Officer, shall develop a test procedure 

by which ORVR compatibility can be demonstrated. This procedure is subject to an 

engineering evaluation by the Executive Officer.

4.5 Compatibility of Phase II Systems with Phase I Systems

4.5.1 Phase II vapor recovery systems shall be certified only in facilities equipped 

with a certified Phase I system. During a Phase II system certification, the 

associated Phase I system shall be subject to all of the standards and 

specifications in Section 3, and tested pursuant to Section 13. 

Compatibility of the proposed Phase II system with the certified Phase I system

installed at the certification test site shall be determined by use of all data 

collected as part of the monitoring described in Section 13 as well as an 

evaluation of the UST pressure profiles generated during the certification tests. 

Failure of any Phase I system tests conducted during the Phase II system 

certification shall require an explanation from the applicant and a determination 

by ARB in regard to the possible cause of the failure. Phase I system test 

failures shall not trigger termination of the Phase II system certification unless 

sufficient information demonstrates that the Phase II system caused the 

failure(s).

Repeated component test failures may lead to a determination of 

incompatibility during the 180-day operational test. 

After successfully completing the certification, the Phase II system shall be 

evaluated based on engineering evaluation of pressure profiles to determine 

compatibility with other certified Phase I systems. Unless otherwise specified 

by the applicant, compatibility with all other certified Phase I systems shall be 

evaluated by ARB.

4.5.2 Applicants for certification may, as a performance specification, limit the type of 

equipment with which their system is compatible. Any such specification shall 

become a condition of certification. 

4.6 Underground Storage Tank Pressure Criteria

Phase II systems that have underground storage tank (UST) pressures sufficient to 

cause potential fugitive emissions that exceed fifty percent (50%) of the maximum 

allowable emission factor shall not be certified. In addition, the following criteria shall 

apply to all Phase II systems.

4.6.1 The vapor recovery system pressure data shall be evaluated so that periods 

during which system pressure changes directly attributable to Phase I 

equipment or operations that do not comply with Sections 4.1.2 and/or 4.1.3 of 

CP-204 are not used to determine failure of the Phase II system to meet the 

system pressure criteria. 

4.6.2 If the vapor recovery system pressure does not deviate from atmospheric 

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CP-201, Page 16
pressure except for those excursions attributable to Phase I operations, the 

integrity of the vapor recovery system shall be presumed to be inadequate. 

4.6.3 The daily average pressure shall be computed as follows:

Zero and negative pressure shall be computed as zero pressure; and

Time at positive and zero pressures shall be included in the calculation.

(Example: 6 hours at +1.0 inches H2O and 18 hours at -1.0inches H2O 

yields an average daily pressure of 0.25 inches H2O.)

4.6.4 The daily high pressure shall be computed as follows:

Zero and negative pressure shall be computed as zero pressure;

Time at positive and zero pressures shall be included in the calculation;

The average positive pressure for each hour shall be calculated; and

The highest hour is the daily high pressure for the day.

4.6.5 A rolling 30 day average of the daily average pressures and the daily high 

pressures for each day shall be calculated by averaging the most current daily 

value with the appropriate values for the previous 29 days. These 30-day 

rolling averages shall meet the following criteria:

The daily average pressure shall not exceed +0.25 inches H2O.

The daily high pressure shall not exceed +1.5 inches H2O.

4.6.6 Pressure readings shall be taken in accordance with TP-201.7 (Continuous 

Pressure Monitoring). Other methods of data collection and analysis may be 

used with prior approval of the Executive Officer.

4.7 Nozzle Criteria

4.7.1 Each vapor recovery nozzle shall be capable of refueling any vehicle that 

complies with the fillpipe specifications and can be fueled by a conventional 

nozzle.

4.7.2 Each vapor recovery nozzle shall be “dripless,” meaning that no more than

three drops shall occur following each refueling operation. This shall be 

determined in accordance with TP-201.2D (Post-Fueling Drips from Nozzles). 

4.7.3 Each vapor recovery nozzle shall comply with the following:

(a) The terminal end shall have a straight section of at least 2.5 inches (6.34 

centimeters) in length; 

(b) The outside diameter of the terminal end shall not exceed 0.840 inch 

(2.134 centimeters) for the length of the straight section; and

(c) The retaining spring or collar shall terminate at least 3.0 inches 

(7.6 centimeters) from the terminal end.

4.7.4 Additional nozzle criteria are contained in Sections 5 and 6.

4.7.5 A minimum of 10 nozzles must be tested for determination of post fueling drips.

California Air Resources Board April 23, 2015

CP-201, Page 17
4.8 Liquid Retention

4.8.1 Liquid retention in the nozzle and vapor path on the atmospheric pressure side

of the vapor check valve shall not exceed 100 ml per 1,000 gallons. This shall 

be determined in accordance with TP-201.2E (Gasoline Liquid Retention in 

Nozzles and Hoses). 

4.8.2 Nozzle “spitting” shall not exceed 1.0 ml per nozzle per test and shall be 

determined in accordance with TP-201.2E (Gasoline Liquid Retention in 

Nozzles and Hoses).

4.8.3 The number of self-service refueling operations observed during certification 

testing of any system for liquid retention and spitting shall be not less than:

10 refueling operations per nozzle (not including topoffs); and 

4 fill-ups (terminated by automatic shut-off, not including topoffs). 

4.8.4 A minimum of 10 nozzles must be tested for determination of liquid retention

and spitting.

4.9 Nozzle/Dispenser Compatibility

The nozzle and dispenser shall be compatible as follows:

4.9.1 The nozzle and dispenser shall be designed such that the vapor check valve is 

in the closed position when the nozzle is properly hung on the dispenser. 

4.9.2 The nozzle and dispenser shall be designed such that the nozzle cannot be 

hung on the dispenser with the nozzle valves in the open position. 

4.10 Unihose Multi-Product Dispenser (MPD) Configuration

There shall be only one hose and nozzle for dispensing gasoline on each side of an

unihose MPD. This shall not apply to facilities installed prior to April 1, 2003 unless the 

facility replaces more than 50 percent of the dispensers. Facility modifications that 

meet the definition of “major modification” for a Phase II system in D-200 trigger the 

unihose requirement as the facility is considered a “new installation”. Exception: 

dispensers which must be replaced due to damage resulting from an accident or 

vandalism may be replaced with the previously installed type of dispenser. 

4.11 Vapor Return Piping

The requirements of Sections 4.11.1 through 4.12.2 for the vapor return piping and, if 

applicable, condensate traps, from the dispenser riser to the underground storage 

tank, shall apply to any facility installed after April 1, 2003.

4.11.1 The vapor return piping from any fueling point to the underground storage tank 

shall be free of liquid or fixed blockage.

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CP-201, Page 18
4.11.2 The Phase II riser shall have a minimum nominal internal diameter of one inch 

(1” ID). The connection between the Phase II riser and the dispenser shall be 

made with materials listed for use with gasoline, and shall have a minimum 

nominal 1” ID.

4.11.3 All new vapor return piping shall have a minimum nominal internal diameter of 

three inches (3” ID) from the point of the first manifold to the storage tank, 

including the float vent valve, if applicable. Facilities permitted by a local district 

prior to the adoption date of this procedure shall be required to meet the 

minimum three inch diameter standard only upon facility modifications requiring 

exposing at least 50 percent of the underground vapor return piping. 

4.11.4 Wherever feasible, the recommended minimum slope of the vapor return 

piping, from the dispensers to the tank, shall be at least one-fourth (1/4) inch 

per foot of run. The minimum slope, in all cases, shall be at least one-eighth 

(1/8) inch per foot of run. 

4.11.5 Vapor return piping shall be constructed of rigid piping (any piping material with 

a bend radius that exceeds six feet; the maximum allowable deflection distance 

is 9 5/8 inches, as determined by TP-201.2G), or shall be contained within rigid 

piping, or shall have an equivalent method, approved by the Executive Officer, 

to ensure that proper slope is achieved and maintained. (Note: this does not 

apply to flexible connectors at potential stress points, such as storage tanks, 

dispensers, and tank vents.) Rigidity shall be determined in accordance with 

TP-201.2G (Bend Radius Determination for Underground Storage Tank Vapor 

Return Piping).

4.11.6 The Executive Officer shall determine, by testing and/or engineering 

evaluation, the maximum allowable length of vapor return piping for the system. 

4.12 Liquid Condensate Traps

Liquid condensate traps (also known as knockout pots and thief ports) are used to 

keep the vapor return piping clear of liquid when it is not possible to achieve the 

necessary slope from the dispenser to the underground storage tank.

4.12.1 Liquid condensate traps shall be used only when the minimum slope 

requirements of 1/8” per foot of run cannot be met due to the topography. 

4.12.2 When condensate traps are installed, they shall be: 

(a) certified by ARB; 

(b) maintained vapor tight; 

(c) accessible for inspection upon request; 

(d) capable of automatic evacuation of liquid; and

(e) equipped with an alarm system in case of failure of the evacuation 

system.

4.13 Connections and Fittings

All connections, fittings, or components not specifically certified with an allowable 

California Air Resources Board April 23, 2015

CP-201, Page 19
leakrate shall not leak. Vapor leaks may be determined by the use of commercial leak 

detection solution, or by bagging individual components, when the vapor containment 

space of the underground storage tank is subjected to a non-zero gauge pressure. 

(Note: leak detection solution will detect vapor leaks only when a positive gauge 

pressure exists). The absence of liquid leaks may be verified by visual inspection for 

seepage or drips.

California Air Resources Board April 23, 2015

CP-201, Page 20
5. PHASE II PERFORMANCE STANDARDS AND SPECIFICATIONS

APPLICABLE TO BALANCE VAPOR RECOVERY SYSTEMS

Table 5-1 summarizes the performance standards and specifications specifically applicable 

to Phase II Balance vapor recovery systems. These systems are also subject to all of the 

standards and specifications in Sections 3 and 4, and the applicable requirements in 

Sections 7 and 8.

Table 5-1

Phase II Performance Standards and Specifications

APPLICABLE TO PHASE II BALANCE VAPOR RECOVERY SYSTEMS

Performance Type Requirement Sec.

Std

Spec.

Test

Procedure

Nozzle Criteria

Each Balance Nozzle 

Shall:

Have an Insertion Interlock

Be Equipped with a Vapor Valve 5.1 Spec. Testing and

Eng. Eval.

Insertion Interlock Verification of No Liquid Flow

Prior to Bellows Compression 5.1 Spec. Testing and

Eng. Eval.

Vapor Check Valve 

Leakrate

≤ 0.07 CFH at 2.0 inches H2O 5.1 Spec. TP-201.2B

Bellows Insertion Force

Pounds (force) to Retaining Device

Specified by Applicant and Verified 

During Certification Testing

5.1 Spec. Testing and

Eng. Eval.

Nozzle Pressure Drop ∆P at 60 CFH of N2 ≤ 0.08 inches H2O 5.2 Std. TP-201.2J

Hose Pressure Drop

[Including Whip Hose] ∆P at 60 CFH of N2 ≤ 0.09 inches H2O 5.2 Std. TP-201.2J

Breakaway

Pressure Drop ∆P at 60 CFH of N2 ≤ 0.04 inches H2O 5.2 Std. TP-201.2J

Dispenser Pressure Drop ∆P at 60 CFH of N2 ≤ 0.08 inches H2O 5.2 Std. TP-201.2J

Swivel Pressure Drop ∆P at 60 CFH of N2 ≤ 0.01 inches H2O 5.2 Std. TP-201.2J

Pressure Drop

Phase II Riser to Tank

[Including Vapor Return 

Line Impact Valve)

∆P at 60 CFH of N2 ≤ 0.05 inches H2O 5.2 Std. TP-201.4

Pressure Drop from

Nozzle to UST

∆P at 60 CFH of N2 ≤ 0.35 inches H2O

∆P at 80 CFH of N2 ≤ 0.62 inches H2O 5.2 Std. TP-201.4

Liquid Removal Systems Capable of Removing 5 ml/ gal. 

(average)

5.3 Std. TP-201.6

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CP-201, Page 21
5.1 Balance Nozzle Criteria

Nozzles for use with balance systems shall comply with all of the criteria in 

Section 4.7, as well as all the criteria below.

5.1.1 Each balance nozzle shall have an insertion interlock designed to prevent the 

dispensing of fuel unless there is an indication that the nozzle is engaged in the 

fillpipe (i.e., the nozzle bellows is compressed). The performance 

specifications for the insertion interlock mechanism shall be established during 

the certification process.

5.1.2 Each balance nozzle shall be equipped with a vapor valve. The leakrate for the 

vapor valve shall not exceed 0.07 CFH at a pressure of 2.0 inches H2O. 

5.1.3 The force necessary to compress the nozzle bellows to the retaining device, or 

a specified distance, shall be specified by the applicant for certification and 

verified during certification testing. The applicant shall include a protocol to test 

the nozzle bellows compression force in the certification application. This 

procedure is subject to engineering evaluation and approval by the Executive 

Officer.

5.2 Dynamic Pressure Drop Criteria for Balance Systems

5.2.1 The dynamic pressure drop for balance systems shall be established in 

accordance with TP-201.4 (Dynamic Back Pressure). The dynamic pressure 

drop standards from the tip of the nozzle spout to the underground storage 

tank, with the Phase I vapor poppet open, shall not exceed the following: 

0.35 inches H2O at a flowrate of 60 CFH of Nitrogen; and

0.62 inches H2O at a flowrate of 80 CFH of Nitrogen.

5.2.2 The dynamic pressure drop for balance system components, measured in 

accordance with TP-201.2J (Pressure Drop Bench Testing of Vapor Recovery 

Components), shall not exceed the following: 

Nozzle: 0.08 inches H2O

Hose (Including Whip Hose): 0.09 inches H2O

Breakaway: 0.04 inches H2O

Dispenser: 0.08 inches H2O

Swivel: 0.01 inches H2O

The dynamic pressure drop for the balance system vapor return line, including 

the impact valve, shall not exceed the following:

Phase II Riser to UST: 0.05 inches H2O

The applicant may request to be certified to a dynamic pressure lower than 

those specified above. This shall be specified in the application and verified 

during certification testing.

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CP-201, Page 22
5.3 Liquid Removal Systems

Liquid removal systems shall be required in configurations that would otherwise be 

subject to liquid blockage.

The liquid removal rate shall be determined in accordance with TP-201.6 

(Determination of Liquid Removal of Phase II Vapor Recovery Systems of Dispensing 

Facilities). The minimum removal rate, averaged over a minimum of 4 gallons, shall 

equal or exceed 5 ml per gallon. The minimum dispensing rate for this requirement 

shall be specified during the certification process.

6.0 PHASE II PERFORMANCE STANDARDS AND SPECIFICATIONS

APPLICABLE TO ALL ASSIST VAPOR RECOVERY SYSTEMS

Table 6-1 summarizes the performance standards and specifications specifically applicable 

to Phase II Assist vapor recovery systems. These systems are also subject to all of the 

standards and specifications in Sections 3, 4 and the applicable requirements in Sections 7 

and 8.

Table 6-1

Phase II Performance Standards and Specifications

APPLICABLE TO ALL PHASE II VACUUM ASSIST SYSTEMS

Performance Type Requirement Sec. Std.

Spec.

Test

Procedure

Nozzle Criteria

Each Assist Nozzle Shall:

Possess a Mini-Boot

Have an Integral Vapor Valve 6.1 Spec. Testing and

Eng. Eval.

Nozzle Vapor Valve

Leakrate

≤ 0.038 CFH at +2.0 inches H2O

≤ 0.10 CFH at −100 inches H2O 6.1 Spec. TP-201.2B

Nozzle Pressure Drop

Specifications

∆P at Specified Vacuum 

Level

Specified by Applicant and Verified

During the Certification Process 6.1 Spec. TP-201.2J

Maximum Air to Liquid Ratio 1.00 (without processor)

1.30 (with processor) 6.2 Std. TP-201.5

Air to Liquid Ratio Range Specified by Applicant and Verified

During the Certification Process 6.2 Spec. TP-201.5

6.1 Nozzle Criteria

6.1.1 Nozzles for use with assist systems shall comply with all of the criteria in 

Section 4.7, as well as all the criteria below.

6.1.2 Each assist nozzle shall be equipped with a mini-boot that both allows for a 

lower A/L ratio and minimizes the quantity of liquid gasoline exiting the fillpipe 

during a spitback event. 

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CP-201, Page 23
6.1.3 Each assist nozzle shall be equipped with a vapor valve. The leakrate for the 

vapor valve shall not exceed the following: 

0.038 CFH at a pressure of +2.0 inches H2O; and 

0.10 CFH at a vacuum of −100 inches H2O.

6.1.4 The nozzle pressure drop shall be specified by the applicant and verified during 

the certification process.

6.2 Air to Liquid Ratio

The air to liquid (A/L) ratio shall be specified by the applicant and verified during the 

certification process in accordance with TP-201.5 (Air to Liquid Volume Ratio). The 

maximum A/L shall not exceed the following: 

1.00 (without processor); and

1.30 (with processor). 

7. PHASE II PERFORMANCE STANDARDS AND SPECIFICATIONS

APPLICABLE TO ASSIST SYSTEMS UTILIZING A CENTRAL VACUUM UNIT

Table 7-1 summarizes the performance standards and specifications specifically applicable 

to Phase II Assist vapor recovery systems utilizing a Central Vacuum Unit. These systems 

are also subject to all of the standards and specifications in Sections 3, 4, 6 and, if 

applicable, Section 8.

Table 7-1

Phase II Performance Standards and Specifications

APPLICABLE TO ALL PHASE II ASSIST SYSTEMS 

UTILIZING A CENTRAL VACUUM UNIT

Performance Type Requirement Sec. Std.

Spec.

Test

Procedure

Specification of

Minimum and Maximum

Vacuum Levels

Specified by Applicant and 

Verified During the Certification 

Process

7.1 Spec. Testing and

Eng. Eval.

Number of Refueling Points

Per Vacuum Device

Specified by Applicant and 

Verified During the Certification 

Process; and

Challenge Mode Testing

7.2 Spec. TP-201.5

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CP-201, Page 24
7.1 Vacuum Levels Generated by the Collection Device

The normal operating range of the system shall be specified by the applicant and 

verified during the certification process, and the maximum and minimum vacuum 

levels shall be specified in the certification Executive Order. The applicant may 

propose challenge mode testing to extend the limits of the operating range.

7.2 Maximum Number of Refueling Points per Vacuum Device

The maximum number of refueling points that can be adequately associated with the 

vacuum device, including meeting the A/L limits, shall be specified by the applicant 

and verified during certification testing. The test shall be conducted with all of the 

refueling points except one using the same fuel grade, and the refueling point on which 

the effectiveness is being tested using a different fuel grade. An engineering 

evaluation followed by certification testing shall demonstrate the system’s ability to 

meet the required A/L ratio and/or emission factor with a self-adjusting submersible 

turbine pump (STP).

8. PHASE II PERFORMANCE STANDARDS AND SPECIFICATIONS APPLICABLE TO 

SYSTEMS UTILIZING A DESTRUCTIVE OR NON-DESTRUCTIVE PROCESSOR

Tables 8-1 and 8-2 summarize the performance standards and specifications specifically 

applicable to Phase II vapor recovery systems utilizing a processor. These systems are also 

subject to all of the standards and specifications in Sections 3 and 4 and, the applicable 

provisions of Sections 5, 6, and 7.

Table 8-1

Phase II Performance Standards and Specifications

APPLICABLE TO ALL PHASE II SYSTEMS

UTILIZING A DESTRUCTIVE PROCESSOR

Performance Type Requirement Sec. Std.

Spec.

Test

Procedure

Hazardous Air Pollutants

(HAPS)

from the processor

HAPS from the Processor Shall 

Not

Exceed these Limits:

1,3-Butadiene: 1.2 lbs/year

Formaldehyde: 36 lbs/year

Acetaldehyde: 84 lbs/year

8.1, 8.2 Std. TP-201.2H

Maximum HC Rate

from Processor

≤ 5.7 lb/1,000 gallons

(in breakdown mode) 8.3 Spec. Testing and 

Eng. Eval.

Typical Load on 

Processor

Specified by Applicant and 

Verified during the Certification 

Process

8.4 Spec. Testing and

Eng. Eval.

Processor Operation 

Time

Specified by Applicant and 

Verified during the Certification 

Process

8.5 Spec. Testing and

Eng. Eval.

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Table 8-2

Phase II Performance Standards and Specifications

APPLICABLE TO ALL PHASE II SYSTEMS

UTILIZING A NON-DESTRUCTIVE PROCESSOR

Performance Type Requirement Sec. Std.

Spec.

Test

Procedure

Maximum HC Rate

from Processor

≤ 5.7 lb/1,000 gallons

(in breakdown mode) 8.3 Spec. Testing and 

Eng. Eval.

Typical Load on 

Processor

Specified by Applicant and 

Verified during the Certification 

Process

8.4 Spec. Testing and 

Eng. Eval.

Processor Operation 

Time

Specified by Applicant and 

Verified during the Certification 

Process

8.5 Spec. Testing and 

Eng. Eval.

8.1 Processor Emission Factors

The emission factors shall be established in accordance with TP-201.2 (Efficiency and 

Emission Factor for Phase II Systems).

8.2 Hazardous Air Pollutants from Destructive Processors

Hazardous Air Pollutants (HAPS) from facilities using processors shall not exceed the 

following limits:

1,3-Butadiene: 1.2 pounds per year

Formaldehyde: 36 pounds per year

Acetaldehyde: 84 pounds per year

The emission factor shall be established in accordance with TP-201.2H (Determination 

of Hazardous Air Pollutants from Vapor Recovery Processors).

8.3 Maximum Hydrocarbon Feedrate from the Processor

The maximum Hydrocarbon feedrate from the processor, in breakdown mode, shall 

not exceed 5.7 pounds per 1,000 gallons.

8.4 Typical Load on the Processor

The typical load on the processor shall be identified by the applicant and verified 

during the certification process, and shall be included in the specifications in the 

certification Executive Order. 

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8.5 Processor Operation Time

The typical processor operation time shall be identified by the applicant and verified 

during the certification process, and shall be included in the specifications in the 

certification Executive Orders.

9. IN-STATION DIAGNOSTIC SYSTEMS

9.1 General Requirements

9.1.1 All GDF vapor recovery systems, unless specifically exempted, shall be 

equipped with an In-Station Diagnostic (ISD) system. Gasoline dispensing 

facilities that dispense less than or equal to 600,000 gallons per year are 

exempted from ISD requirements.

9.1.2 All GDF vapor recovery systems shall be equipped with an ISD system or 

device that has the capability to automatically prohibit the dispensing of fuel 

and has the capability to automatically inform the station operator in the event 

of either a malfunction, failure, or degradation of the system as defined below

in Section 9.2.

9.1.3 All ISD systems shall be equipped with an RS232 port to remotely access ISD 

status information using standardized software. 

9.1.4 The ISD manufacturer shall provide a means of testing and calibrating the 

sensors or devices installed on the GDF vapor recovery ISD system, including 

procedures for verifying that the ISD system operates properly. The means of 

testing and calibration shall be verified and subjected to challenge mode testing 

during the certification process. 

9.1.5 Personnel trained and certified by the Executive Order certification holder, ISD 

manufacturers, or California Contractors State License Board shall test and 

calibrate the installed vapor recovery ISD system sensors or devices annually, 

at a minimum, with test equipment calibrated to National Institute of Standards 

and Technology-traceable standards. The minimum annual calibration 

frequency requirement may be waived and replaced with a frequency to be 

determined during certification testing if the ISD system manufacturer 

demonstrates equivalent self testing and automatic calibration features. All 

vapor recovery ISD system sensors or devices not performing in conformance 

with the manufacturer's specifications shall be promptly repaired or replaced.

9.1.6 Subject to the Executive Officer approval, other monitoring strategies may be 

used provided the manufacturer provides a description of the strategy and 

supporting data showing such strategy is equivalent to these requirements. 

Information such as monitoring, reliability, and timeliness shall be included.

9.1.7 The vapor recovery ISD system shall include self-testing including the ISD 

system and sensors that will be verified during the certification process.

9.1.8 The ISD system shall maintain an electronic archive of monthly reports for a 

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period of 12 months and an archive of daily reports for the last rolling 365 days.

9.1.9 The vapor recovery ISD system shall be operational a minimum of ninety five 

percent (95%) of the time, based on an annual basis or prorated thereof, and 

shall record the percentage of ISD up-time on a daily basis.

9.1.10 The Executive Officer shall, during certification testing, verify that the system is 

capable of detecting failures (of a size defined in each subsection, below) with 

at least a 95% probability while operating at no more than a 1% probability of 

false alarms. A false alarm occurs when the ISD system issues an alarm, but 

the vapor recovery system is functioning normally; i.e., the vapor recovery 

system is operating within the parameter limits required by CP-201 and 

specified in its Executive Orders.

9.1.11 Certification testing shall be performed in accordance with TP-201.2I (Test 

Procedure for In-Station Diagnostic Systems). 

9.2 Monitoring Requirements

9.2.1 Air/Liquid (A/L) Ratio Vapor Collection Monitoring

(a) Requirement

The GDF vapor recovery ISD system shall monitor the Air to Liquid 

(A/L) ratio for vapor recovery systems which have A/L limits required by 

Section 6 and specified in their Executive Orders.

(b) Malfunction Criteria – Gross Failure

The GDF vapor recovery ISD system shall assess, on a daily basis, 

based on a minimum of 15 non-ORVR dispensing events, when the A/L 

ratio is at least 75% below the lower certified A/L ratio or at least 75% 

above the upper certified A/L ratio, shall activate a warning alarm, and 

shall record the event. This condition must be detected with a 

probability of 95%. If fewer than 15 non-ORVR dispensing events occur 

in a day, the ISD system may accumulate events over an additional day 

or days until a minimum of 15 non-ORVR events is reached. When two 

such consecutive failed assessments occur, the ISD system shall 

activate a failure alarm, record that event, and prohibit fuel dispensing 

from the affected fueling point(s). The ISD system shall have the 

capability of re-enabling dispensing, and shall record that event.

For example, for a vapor recovery system that is certified to operate 

with an A/L ratio between 0.9 and 1.0, a failed assessment shall occur if 

the daily A/L ratio is less than or equal to .22 (25% of .9) or if the daily 

ratio is greater than or equal to 1.75 (75% more than 1.0). When the 

ISD system assesses two consecutive failures, the ISD system shall 

activate an alarm.

(c) Malfunction Criteria - Degradation

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The GDF vapor recovery ISD system shall assess, on a weekly basis, 

based on a minimum of 30 non-ORVR dispensing events, when the A/L 

ratio is at least 25% below the lower certified A/L ratio or at least 25% 

above the upper certified A/L ratio, shall activate a warning alarm, and 

shall record the event. This condition must be detected with a 

probability of 95%. If fewer than 30 non-ORVR dispensing events occur 

in a week, the ISD system may accumulate events over an additional 

day or days until a minimum of 30 non-ORVR events is reached. When 

two such consecutive failed assessments occur, the ISD system shall 

activate a failure alarm, record that event, and prohibit fuel dispensing 

from the affected fueling point(s). The ISD system shall have the 

capability of re-enabling dispensing, and shall record that event.

For example, for a vapor recovery system that is certified to operate 

with an A/L ratio between 0.9 and 1.0, a failed assessment shall occur if 

the weekly A/L ratio is less than or equal to .68 (75% of .9) or if the 

weekly ratio is greater than or equal to 1.25 (25% more than 1.0). When 

the ISD system assesses two consecutive failures, the ISD system shall 

activate an alarm.

9.2.2 Balance Performance Vapor Collection Monitoring

(a) Requirement

The GDF vapor recovery ISD system shall monitor vapor collection 

performance for balance vapor recovery systems. Vapor collection 

performance is defined as the amount of vapor collected relative to fuel 

dispensed to a non-ORVR vehicle. The baseline vapor collection 

performance is established during certification as described in 

TP-201.2I.

(b) Malfunction Criteria

The GDF vapor recovery ISD system shall assess, on a daily basis, 

based on a minimum of 15 non-ORVR dispensing events, when the 

vapor collection performance is less than 50%, shall activate a warning 

alarm, and shall record the event. The vapor collection performance 

can be monitored using flowmeters, pressure transducers, liquid 

sensors or any other means that indicates a 50% vapor collection 

decrease from the baseline. This condition must be detected with a 

probability of 95%. If fewer than 15 non-ORVR dispensing events occur 

in a day, the ISD system may accumulate events over an additional day 

or days until a minimum of 15 non-ORVR events is reached. When two 

such consecutive failed assessments occur, the ISD system shall 

activate a failure alarm, record that event, and prohibit fuel dispensing 

from the affected fueling point(s). The ISD system shall have the 

capability of re-enabling dispensing, and shall record that event.

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9.2.3 Central Vacuum Unit Monitoring

(a) Requirement

The GDF vapor recovery ISD system shall verify that the central 

vacuum unit is operating within the specified range by measuring and 

recording the vacuum at a minimum of one reading every minute.

(b) Malfunction Criteria

The GDF vapor recovery ISD system shall assess, on a continuous 

rolling 20 minute basis, when a vacuum failure occurs as determined by 

the Executive Officer for each Phase II system, shall activate a failure 

alarm, record the event, and prohibit fuel dispensing from the affected 

fueling point(s). This condition must be detected with a probability of 

95%. The ISD system shall have the capability of re-enabling 

dispensing and will disable the central vacuum unit monitoring for 24 

hours, and shall record that event.

9.2.4 Ullage Pressure Vapor Containment Monitoring

(a) Requirement

The GDF vapor recovery ISD system shall measure and record the 

pressure of each UST ullage at a minimum of one reading every minute. 

One pressure monitoring device may be used for multiple USTs that 

have common vapor recovery piping.

(b) Malfunction Criteria – Gross Failure

The GDF vapor recovery ISD system shall assess, on a weekly basis, 

when the UST ullage pressure exceeds 1.5” wcg for at least 5% of the 

time, shall activate a warning alarm, and shall record the event. This 

condition must be detected with a probability of 95%. When two such 

consecutive failed assessments occur, the ISD system shall activate a 

failure alarm, record that event, and prohibit fuel dispensing from the 

affected fueling point(s). The ISD system shall have the capability of reenabling dispensing, and shall record that event.

(c) Malfunction Criteria – Degradation

The GDF vapor recovery ISD system shall assess, on a monthly basis, 

when the UST ullage pressure exceeds 0.50" wcg for at least 25% of 

the time, shall activate a warning alarm, and shall record the event. 

This condition must be detected with a probability of 95%. When two 

such consecutive failed assessments occur, the ISD system shall 

activate a failure alarm, record that event, and prohibit fuel dispensing 

from the affected fueling point(s). The ISD system shall have the 

capability of re-enabling dispensing, and shall record that event. 

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(d) Malfunction Criteria – Pressure Integrity

The ISD system shall detect the potential for excessive rates of vapor 

leakage from the UST system. The ISD system shall assess, on a 

weekly basis, when the vapor recovery system leaks at a rate which is 

at least 2 times the rate allowed in section 4.2, shall activate a warning 

alarm, and shall record the event. This condition must be detected with 

a probability of 95%. When two such consecutive failed assessments 

occur, the ISD system shall activate a failure alarm, record that event, 

and prohibit fuel dispensing from the affected fueling point(s). The ISD 

system shall have the capability of re-enabling dispensing, and shall 

record that event.

9.2.5 Vapor Processing Monitoring

(a) Requirement

The GDF vapor recovery ISD system shall verify that the processor is 

functioning properly as specified in Section 8 and the Executive Order. 

(b) Malfunction Criteria

The GDF vapor recovery ISD system shall assess, on a daily basis, 

when the vapor processor is malfunctioning as defined in the Executive 

Order, shall activate a warning alarm, and shall record the event. When 

two such consecutive failed assessments occur, the ISD system shall 

activate a failure alarm, record that event, and prohibit fuel dispensing 

from the affected fueling point(s). The ISD system shall have the 

capability of re-enabling dispensing, and shall record that event. 

9.3 Records

9.3.1 The GDF vapor recovery ISD system shall generate a monthly report which 

includes the following:

(a) ISD operational time (as a percentage);

(b) Vapor Recovery system’s operating requirements;

(c) Vapor recovery system pass time (as a percentage);

(d) ISD monitoring requirements;

(e) Warnings - this shall include the time and date;

(f) Failures - this shall include the time and;

(g) Event log describing re-enabling action taken - this shall include the 

time and date; and the time and date the ISD system clock was 

adjusted.

9.3.2 The GDF vapor recovery ISD system shall generate a monthly printout version 

on demand which includes the following:

(a) ISD operational time (as a percentage);

(b) Vapor recovery system pass time (as a percentage);

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(c) Warnings - this shall include the time and date of the last ten warnings 

in the selected month;

(d) Failures - this shall include the time and date of the last ten failures in 

the selected month;

(e) Event Log - this shall include the time and date of the last ten logged 

exception events in the selected month including re-enabling actions 

taken and any ISD system clock adjustments.

9.3.3 The GDF vapor recovery ISD system shall generate a daily report which 

includes the following:

(a) Record of the percentage of ISD up-time on a daily basis;

(b) Highest ullage pressure;

(c) Lowest ullage pressure;

(d) 75th percentile ullage pressure;

(e) 95th percentile ullage pressure;

(f) Daily measured values of each fueling point; and

(g) Daily pass or fail assessment for each fueling point, and

(h) Processor Assessment.

9.3.4 Daily reports (as outlined in Section 9.3.3) and monthly printout versions (as 

outlined in Section 9.3.2) shall be available for printing, on demand, at the GDF 

site from the integral ISD printer. Daily reports shall be available for printing 

for the previous 30 days. Monthly printout versions shall be available for 

printing for the previous 12 months. 

9.3.5 The ISD system shall store the electronic records of the monthly reports, 

monthly printout versions, and daily reports, such that the records are 

maintained despite loss of power to the ISD system.

9.4 Tampering Protection

The GDF vapor recovery ISD system sensors or devices shall be designed and 

installed in a manner designed to resist unauthorized tampering and to clearly show by 

visual inspection if tampering has occurred. The ISD system shall be designed and 

installed so that the station can not dispense fuel unless the ISD system is operating. 

The manufacturer shall include measures to prevent tampering of the GDF vapor 

recovery ISD system in the application. All tampering features are subject to 

Executive Officer approval.

9.5 Readiness/Function Code

The GDF vapor recovery ISD system shall store a code upon first completing a full 

diagnostic check of all monitored components and systems. This is applicable when 

the GDF vapor recovery ISD system is initially installed or when power is restored.

9.6 Stored Vapor Recovery System Conditions

Upon detection of a vapor recovery component or system failure the GDF vapor 

recovery system conditions shall be stored in computer memory. Subject to Executive 

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Officer approval, stored GDF vapor recovery system conditions shall include, but are 

not limited to, the time, date, which fueling point was shut down (if applicable), and the 

fault code.

9.7 Challenge Mode Testing

The Executive Officer shall conduct, or shall contract for and observe, challenge mode 

testing using test procedures to verify that the ISD system can detect various types of 

failures, record the incidence of such failures, and respond accordingly with alarms 

and/or by prohibiting fuel dispensing, as applicable. The ISD system shall have the 

capability of re-enabling dispensing, and shall record that event. Challenge mode 

testing shall include verification that interaction with ORVR-equipped vehicles will not 

cause the ISD to inappropriately identify a failure condition. ISD systems with false 

positive determinations in excess of one percent (1%) shall not be certified.

9.8 Electronic Access

The monthly and daily reports shall be made available on demand through an RS 232 

serial port on a standardized data link connector. All ISD reports shall be electronically 

accessible with standardized software.

10. CERTIFICATION OF VAPOR RECOVERY SYSTEMS

The Executive Officer shall certify only those vapor recovery systems that, based on testing 

and engineering evaluation of that system’s design, component qualities, and performance, 

are demonstrated to meet all applicable requirements of this certification procedure. Except 

as provided in Sections 18 and 19, this certification procedure should not be used to certify 

individual system components. Steps and conditions of the certification process, along with 

the Sections of this document that describe them, are outlined below. 

(a) Application Process Section 11

(b) Evaluation of the Application Section 12

(c) Vapor Recovery System Certification Testing Section 13

(d) Alternate Test and Inspection Procedures Section 14

(e) Documentation of Certification Section 15

(f) Duration and Conditions of Certification Section 16

(g) Certification Renewal Section 17

(h) Amendments to Executive Orders Section 18

10.1 Each applicant submitting a system and/or component for certification shall be charged 

fees not to exceed the actual cost of evaluating and testing the system to determine 

whether it qualifies for certification. The applicant is required to demonstrate ability to 

pay the cost of testing prior to certification and performance testing. Applicants may 

request a payment plan for testing and certification costs. Requests for a payment 

plan should be submitted in writing to the Executive Officer and should include the 

payment frequency (monthly, quarterly, etc.) and amount of each payment to meet the 

obligation. Payment of fees shall be a condition of certification. Failure to fulfill the 

conditions of payment may result in revocation of the Executive Order.

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11. APPLICATION PROCESS

All of the information specified in the following subsections shall be submitted to the 

Executive Officer for an application to be evaluated. An application for certification of a 

Phase I or Phase II vapor recovery system may be made to the Executive Officer by any 

applicant. 

The applicant for certification shall identify, in the preliminary application, the standard(s) or 

specification(s) with which the system complies, and demonstrate that the proposed system 

meets the primary performance standard(s) or specification(s) required by sections 3 

through 9 of this Procedure. For the preliminary application, the applicant shall have 

performed tests for all applicable performance specifications and standards. Engineering 

reports of successful test results for all these tests must be included in the preliminary 

application. In order to expedite the application process, the Executive Officer may 

determine that the application is acceptable based on the results of abbreviated operational 

and/or efficiency/emission factor testing and spillage. Test results shall be submitted for an 

operational test of at least 30 days, for a test of at least 50 vehicles demonstrating adequate 

collection, and for at least 200 observations of spillage (including at least 40 percent fill-ups), 

or equivalent verification that the system is capable of meeting the performance standards 

and specifications. 

The system, as characterized by these reports, shall be subjected to an engineering

evaluation. If the preliminary application is deemed acceptable, the applicant shall be 

notified and shall expeditiously install the system for certification testing. If the preliminary 

application is deemed unacceptable, applicants will be notified of any deficiencies within 60 

days. The final application shall not be deemed complete until it contains the results of all 

necessary testing, the approvals of other agencies, the finalized operating and maintenance 

manuals, and all other requirements of certification.

The manufacturer shall demonstrate, to the satisfaction of the Executive Officer, that the 

GDF vapor recovery ISD system complies with the performance standards under actual field 

conditions and simulated failures. Such demonstrations shall include the submission of test 

results with the certification application.

The applicant shall provide a statement that all production parts will be built with the same 

manufacturing standards and achieve the same performance as the parts that will be 

evaluated during the certification. This statement shall include that all performance 

standards, manufacturing practices and product testing conducted by the applicant will 

guarantee that all parts will meet applicable standards and specifications. 

 

Estimated timelines for evaluation of certification applications are provided below.

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Table 11-1

Estimated Timeline for the Certification Application Process

Action Time Determination ARB Response

Preliminary Application Filed 60 days Acceptable Preliminary Application Accepted

Test Site Approval Granted

Preliminary Application Filed 60 days Unacceptable Notification of Deficiencies

Application Resubmitted 30 days Acceptable Preliminary Re-Application Accepted

Test site Approval Granted

Application Resubmitted 30 days Unacceptable Initial Re-Application Returned with

Notation of Deficiencies

Final Application Complete 120 days Acceptable Executive Officer Issues

Certification Executive Order

Final Application Complete 120 days Unacceptable Executive Officer Denies 

Certification

The application shall be written and signed by an authorized representative of the applicant, 

and shall include all of the items listed below. 

(a) Description of Vapor Recovery System (§11.1)

(b) Description of In-Station Diagnostics System (§11.2)

(c) Materials Compatibility with Fuels (§11.3)

(d) Evidence of Compatibility of the System (§11.3)

(e) Evidence of Reliability of the System (§11.4)

(f) Installation and Maintenance Requirements of the System (§11.5)

(g) Evidence of Financial Responsibility of the Applicant (§11.6)

(h) A Copy of the Warranty (§11.7)

(i) Request for and Information about Proposed Test Station (§11.8)

(j) Notification of System Certification Holder, if applicable (§11.9)

(k) Equipment Defect Identification and Test Protocols (§11.10)

(l) Challenge Modes and Test Protocols (§11.11)

(m) Other Information (§11.12)

In addition, an electronic version (DVD/CD/Thumb Drive, etc.) of the application shall also 

be submitted to ARB that contains all aspects of the written and signed version in Portable 

Display Format (PDF) or other format acceptable to the Executive Officer.

11.1 Description of Vapor Recovery System

The application shall include a complete description of the system concept, design and 

operation, including, but not limited to, the following items.

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11.1.1 Identification of critical system operating parameters. An engineering 

evaluation of the system will be performed by ARB to evaluate any proposed 

specifications and to establish additional performance specifications if required.

11.1.2 Complete engineering drawings of system, components, and underground 

piping and tank configurations for which certification is requested. These 

drawings shall include the full production component (e.g. nozzle, hose, 

breakaway) as well as each individual sub-assemblies and parts used in the 

construction of the component. All drawings shall show part number(s), 

drawing revision level, revision level detail, parts list (if applicable), material(s), 

dimensions and tolerances. 

11.1.3 Engineering parameters for dispenser vapor system control boards and/or all 

vapor piping, pumps, nozzles, hanging hardware, vapor processor, etc. 

11.1.4 Listing of vapor recovery system components (e.g. nozzle, drop tube, vapor 

processor, etc.) and evidence that the manufacturers of any components 

intended for use with the system and not manufactured by the applicant have 

been notified of the applicant’s intent to obtain certification. 

11.1.5 Applicable performance standards and specifications of components, 

specifically identifying those which exceed the minimum acceptable 

specifications and for which certification of superior performance is requested, 

and test results demonstrating compliance with these specifications. 

11.1.6 Results of tests demonstrating that the system and components meet all the 

applicable performance standards. These tests shall be conducted by, or at 

the expense of, the applicant. 

11.1.7 If the application is for an innovative system, the applicant shall identify the 

performance standard(s) or specification(s) with which the system does not 

comply. The applicant shall supply any necessary alternative test procedures, 

and the results of tests demonstrating that the system complies with the 

emission factor/efficiency. The applicant shall also supply test results 

demonstrating that the emission benefits of the innovation are greater than the 

consequences of failing to meet the identified performance standard or 

specification. 

11.1.8 Any additional specifications of the system including, but not limited to, 

underground pipe sizes, lengths, fittings, volumes, material(s), etc. 

11.1.9 Estimated retail price of the system. 

11.1.10 For previously tested systems, identification of any and all new components 

and physical and operational characteristics, together with new test results 

obtained by the applicant. 

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11.2 Description of In-Station Diagnostics (ISD)

The applicant shall include the following documentation with the certification 

application.

11.2.1 A written description of the functional operation of the GDF vapor recovery ISD 

system.

11.2.2 A table providing the following information shall be included for each monitored 

component or system, as applicable:

(a) Corresponding fault code;

(b) Monitoring method or procedure for malfunction detection;

(c) Primary malfunction detection parameter and its type of output signal;

(d) Fault criteria limits used to evaluate output signal of primary parameter;

(e) Other monitored secondary parameters and conditions (in engineering 

units) necessary for malfunction detection;

(f) Monitoring time length and frequency of checks;

(g) Criteria for storing fault code;

(h) Criteria for notifying station operator; and

(i) Criteria used for determining out of range values and input component 

rationality checks.

11.2.3 A logic flowchart describing the general method of detecting malfunctions for 

each monitored emission-related component or system.

11.2.4 A written detailed description of the recommended inspection and Maintenance 

procedures, including inspection intervals that will be provided to the gasoline 

dispensing facility operator.

11.2.5 A written detailed description of the training plan to train and certify system 

testers, repairers, installers, and rebuilders.

11.2.6 A written description of the manufacturer's recommended quality control 

checks.

11.2.7 A written description of calibration and diagnostic checks.

11.2.8 A list of system components that are monitored by the ISD system and test 

procedures for challenge mode testing. The Executive Officer may modify the 

list or test procedures based on an engineering evaluation. Additional 

procedures may be developed as necessary to verify that the system’s selfcheck and self-test features perform accurately.

11.3 Compatibility

11.3.1 The applicant shall submit evidence of system compatibility, including the 

following:

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11.3.2 A procedure developed by the applicant for demonstrating compatibility 

between the Phase II vapor recovery system and ORVR-equipped vehicles 

shall be submitted, along with the test results demonstrating compatibility. The 

procedure shall comply with the provisions in Section 4.4.

11.3.3 Evidence demonstrating the compatibility of the Phase II system with any type 

of Phase I system with which the applicant wishes the Phase II system to be 

certified, as specified in Section 4.5. Continuous recordings of pressure 

readings in the underground storage tank, as well as challenge mode tests, 

may be used for this demonstration.

11.3.4 Evidence that the system can fuel any vehicle meeting state and federal fillpipe 

specifications and capable of being fueled by a non-vapor-recovery nozzle. 

11.3.5 The applicant shall provide information regarding the materials specifications of 

all components, including evidence of compatibility with all fuels in common 

use in California and approved as specified in Section 3.8. If the applicant is 

requesting a certification for use only with specified fuel formulations, the 

applicant shall clearly identify, in the application, the included and excluded fuel 

formulations for which certification is requested. 

11.4 Reliability of the System

In order to ensure ongoing compliance, adequately protect public health, and protect 

the end-user, the reliability of the system shall be addressed in the application, 

including the following: 

11.4.1 The expected life of system and components. 

11.4.2 Description of tests conducted to ascertain compliance with performance 

standards and specifications for the expected life of the system or component, 

any procedures or mechanisms designed to correct problems, and test results. 

11.4.3 Identification of and emission impact of possible failures of system, including 

component failures 

11.4.4 Procedure and criteria for factory testing (integrity, pressure drop, etc.)

11.4.5 Detailed description of the Quality Assurance/Quality Control (QA/QC) 

protocols used by the manufacturer to ensure the production version of the 

vapor recovery system or component meets and maintains certification 

standards.

11.5 Installation, Operation, and Maintenance of the System

The installation, operation, and maintenance plan shall be submitted, and shall include 

at least the following items: 

11.5.1 Installation, operation, and maintenance manuals of the system, including the 

ISD.

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11.5.2 A plan for training installers in the proper installation of the system. 

11.5.3 A replacement parts program. 

11.5.4 The estimated installation costs and yearly maintenance costs. 

11.6 Evidence of Financial Responsibility

The applicant shall submit evidence of financial responsibility to ensure adequate 

protection to the end-user of the product as specified in Section 16 and to demonstrate 

the ability to pay for certification tests.

11.7 Warranty

The applicant shall submit a copy of the warranty for the system, warranties for each 

component, and samples of component tags or equivalent method of meeting warranty 

requirements as specified in Section 16.

11.8 Test Station

11.8.1 The vapor recovery system shall be installed and tested in an operating 

gasoline dispensing facility for the purpose of certification testing. 

11.8.2 The applicant shall make arrangements for the vapor recovery system to be 

installed in an operating gasoline dispensing facility meeting the requirements 

of Section 13.1.

11.8.3 The request for designation as a test site shall include the following information: 

(a) Location of the facility; 

(b) Verification of throughput for at least six months; and 

(c) Hours of operation.

11.8.4 The applicant shall submit final construction diagrams of the proposed test 

station. These drawings shall clearly identify the type of vapor recovery piping 

and connections, pipe slope, and type of storage tanks (i.e., single or double 

wall, steel, fiberglass, etc.). The Executive Officer may require Professional 

Engineer or Architect Approved As-Built drawings of the test site. If such 

drawings are not obtainable, the applicant may request the Executive Officer to 

accept alternatives sources of this information, such as detailed schematics of 

the vapor piping configuration and/or photographs clearly identifying 

underground components.

11.9 Notification of Certified System Component Manufacturers

If the applicant is not the manufacturer of all system components, the applicant shall 

include evidence that the applicant has notified all component manufacturer(s) of the 

applicant’s intended use of the component manufacturers’ equipment in the vapor 

recovery system for which the application is being made.

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11.10 Equipment Defect Identification and Test Protocols

The application shall identify where failure of system components may result in an 

equipment defect as defined by section 94006, Title 17, CCR (Vapor recovery 

equipment defect, VRED). Test protocols shall be developed by the applicant, and 

submitted with the certification application, along with test results, observations, or 

other analyses conducted by the applicant, to determine if the component or system 

failure meets the criteria of a VRED. These protocols are subject to engineering 

evaluation and approval by the Executive Officer. 

11.11 Challenge Modes and Test Protocols

The application shall identify potential challenge modes, as described in Section 13.4. 

Test protocols shall be developed and submitted by the applicant, and submitted with 

the certification application, along with test results, observations, or other analyses 

conducted by the applicant, to determine if the system meets the applicable standards 

and specifications when tested in challenge mode. These protocols are subject to 

engineering evaluation and approval by the Executive Officer.

11.12 Other Information

11.12.1 The applicant shall provide any other information that the Executive Officer 

reasonably deems necessary.

11.12.2 For a balance type system, the applicant shall provide a specification for 

the bellows insertion force as specified in Section 5.1. The applicant will 

include a protocol to test the nozzle bellows compression force in the 

certification application. This procedure is subject to engineering evaluation 

and approval by the Executive Officer.

11.12.3 For an assist system, the applicant shall provide specifications for the 

nozzle pressure drop as specified in Section 6.1 and for the air to liquid 

ratio as specified in Section 6.2. 

11.12.4 For a central vacuum assist system, the applicant shall provide 

specifications for the minimum and maximum vacuum levels and for the 

number of refueling points per vacuum device as specified in Sections 7.1 

and 7.2, respectively.

11.12.5 For a system with a processor, the applicant shall provide the typical load 

on the processor and the processor operation time as specified in Sections 

8.4 and 8.5 respectively.

12. EVALUATION OF THE APPLICATION

The application for certification of all systems and components shall be subjected to an 

evaluation by the Executive Officer

The evaluation of the application shall include, but is not limited to, subsections 12.1 through 

12.7.

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12.1 Performance Standards and Specifications

The system and component performance standards and specifications identified by the 

applicant shall be reviewed to ensure that they include and conform to the applicable 

standards and specifications in Sections 3 through 9 of this Procedure.

12.2 Bench and Operational Testing Results

The procedures for, and results of, bench testing and operational testing contained in 

the application shall be reviewed. The review shall determine if the procedures adhere 

to required methodology and ensure that the results meet or exceed the standards and 

specifications in Sections 3 through 9 of this Procedure. The evaluation shall include a 

determination of necessary verification testing. 

12.3 Evaluation of System Concept

The system concept shall be evaluated to ensure that it is consistent with the generally 

accepted principles of physics, chemistry, and engineering.

12.4 Materials Specifications and Compatibility with Fuel Formulations 

The component materials specifications shall be reviewed to ensure chemical 

compatibility with gasoline and/or any oxygenates that may be present in gasoline on 

an ongoing or on a seasonal basis, as specified in Section 3.8. This review shall 

include consideration of the variations in gasoline formulations for octane differences 

and summer fuel and winter fuel.

12.5 Installation, Operation and Maintenance Manuals 

The installation, operation and maintenance manuals for the system and components 

shall be reviewed for completeness (see Section 16.6). Routine maintenance 

procedures shall be reviewed to ensure adequacy and determine that the procedures 

are not unreasonable (see Section 16.6).

12.6 Equipment Defect Identification 

The engineering evaluation shall identify where failure of system components may 

result in a vapor recovery equipment defect (VRED) as defined by section 94006, title 

17, CCR. Test protocols may be developed by the applicant to determine if the 

component or system failure meets the criteria of a VRED. These test protocols, upon 

approval of the Executive Officer, are applied during certification testing as provided in 

section 13.4.1. The ARB Executive Officer may, for good cause, require modification 

of, and/or testing in addition to, VRED testing proposed by the applicant.

All VRED mode test procedures, and the results of tests conducted by the applicant, 

shall be reviewed. Additionally, all VRED mode testing conducted during the 

certification process to verify the test results or further evaluate the systems shall be 

similarly reviewed. 

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12.7 Challenge Mode Determination

The applicant may propose, and the Executive Officer shall determine, whether 

additional testing is needed to ensure the system will meet the applicable standards 

and specifications under various typical operating parameters. Proposed test protocols 

may be developed by the applicant to determine if the component or system meets the 

applicable standards and specifications under such conditions. These test protocols, 

after engineering evaluation and upon approval of the Executive Officer, are applied 

during certification testing as provided in section 13.4.2. The ARB Executive Officer 

may, for good cause, require modification of, and/or testing in addition to, challenge 

mode testing proposed by the applicant. 

13. VAPOR RECOVERY SYSTEM CERTIFICATION TESTING

The Executive Officer shall conduct, or shall contract for and observe, testing of vapor 

recovery systems conducted for the purpose of certification. Except as otherwise specified 

in Section 14 of this procedure, vapor recovery systems shall be subjected to evaluation and 

testing pursuant to the applicable performance standards, performance specifications, and 

test procedures specified in Sections 3 through 9 of this procedure. 

Certification testing of vapor recovery systems shall be conducted only after the preliminary 

application for certification has been found to be acceptable. Some tests may be conducted 

more than once to characterize the performance of systems and/or system components over 

time. Except as otherwise provided in Sections 18 and 19 of this procedure, only complete 

systems shall be certified.

Failure of any component during testing of a Phase I or Phase II system shall be cause for 

termination of the certification test, except as noted below. Any Phase I or Phase II system 

and/or component test failures must be investigated by the applicant and an explanation 

provided to the Executive Officer within one week of the test failure discovery. The 

Executive Officer may extend this one week time period for good cause. The Executive 

Officer may consider information and circumstances presented by the applicant, including 

previous certification testing, to demonstrate that the failure was attributable to something 

other than the design of the component and/or system, and may allow further testing without 

modification. 

As specified in Section 4, Phase II vapor recovery systems shall be certified only in facilities 

equipped with a certified Phase I system. During Phase II system certifications, the 

associated Phase I system shall be subject to all of the standards and specifications in 

Section 3. Monitoring of Phase I system performance shall be conducted for the purpose of 

demonstrating compatibility, as required by Section 4.5, as well as to insure that the Phase I 

system is functioning properly during the Phase II certification test. Any Phase I 

components identified as not performing correctly shall be replaced and the Phase II system 

certification continued. However, Phase II system test data collected during any period 

associated with a Phase I system test failure shall be evaluated for validity.

During Phase II system certifications, failures of any Phase I components that are 

determined to be unrelated to the performance of the Phase II system shall not be cause for 

termination of the Phase II system certification. During Phase II certification tests, if any 

Phase I component is identified as having performance deficiencies, then a more thorough 

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investigation of the Phase I component/system performance will be initiated by the 

Executive Officer. 

During Phase II system certifications, any Phase I system and/or component performance 

deficiencies that are determined to be related to the performance of the Phase II system 

shall be cause for termination of the Phase II system certification, as provided by Section 

4.5.

Any applicant or representative of an applicant found to have performed unauthorized 

maintenance, or to have attempted to conceal or falsify information, including test results 

and/or equipment failures, may be subject to civil and criminal penalties and testing of the 

system or component shall be terminated.

13.1 Test Site for Field Testing of Vapor Recovery Systems

The applicant shall make arrangements for the vapor recovery system to be installed 

in one or more operating GDFs for certification testing, and the applicant shall request, 

in writing, approval of the GDF as a test site from the Executive Officer. Upon 

determining that the GDF meets all of the following criteria, the Executive Officer shall, 

in writing, designate the selected location as a test site, and exempt it from any state 

or local district prohibition against the installation of uncertified equipment. This shall 

not exempt it from the prohibition against the offer for sale, or sale, of uncertified 

equipment. The vapor recovery system shall be installed throughout the entire facility

(note this requirement applies to the primary certification test site). The Executive 

Officer may require that the system be installed in more than one facility for the 

purpose of testing.

13.1.1 The test station shall have a minimum gasoline throughput of 150,000 

gallons/month, as demonstrated over a consecutive six-month period. The 

minimum allowable monthly throughput for each of the six months is 150,000 

gallons/month. The throughput data submitted in the certification application, 

as specified in Section 11, shall be the most current data available. The test 

site throughput shall also be shown to comply with this criteria for the six 

months prior to the start of operational tests.

If the facility is equipped with one hose and nozzle for each gasoline grade, 

rather than a uni-hose configuration, the minimum throughput requirement shall 

apply to the gasoline grade with the highest throughput.

13.1.2 The station shall be located within 100 miles of the ARB Sacramento offices. 

When a suitable location for testing cannot be located within 100 miles of the 

ARB offices, the Executive Officer may, for good cause, grant approval of a test 

station elsewhere, provided that all the necessary testing can be conducted at 

that location. The applicant shall be responsible for any additional costs, such 

as travel, associated with that location.

13.1.3 Continuous access to the test site by ARB staff, without prior notification, shall 

be provided. Every effort will be made to minimize inconvenience to the 

owner/operator of the facility. If testing deemed necessary cannot reasonably 

be conducted, the facility shall be deemed unacceptable and the test shall be 

terminated. 

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13.1.4 If test status is terminated for any reason, uncertified equipment shall be 

removed within sixty (60) days, unless the Executive Officer extends the time in 

writing. The local district with jurisdiction over the facility may impose a shorter 

time.

13.1.5 All test data collected by the applicant at the test site shall be made available to 

the Executive Officer within fifteen (15) working days. Continuous data, such 

as pressure monitoring data, shall be submitted in bimonthly increments within 

15 days of the last day of the increment. Failure to provide this information may 

result in extension or termination of the test. The Executive Officer may specify 

the format in which the data is to be submitted.

13.1.6 Test site designation may be requested by the applicant, or by another person, 

for facilities other than the certification test site(s), for the purpose of research 

and development, or independent evaluation of a system prior to its 

certification. Approval of such a test site shall be at the discretion of the 

Executive Officer. The research and development test site shall be subject to 

all of the above conditions with the exception of 13.1.1 and 13.1.2.

13.1.7 For testing conducted pursuant to Section 18, Phase I certification test sites 

configured with fewer than three P/V valves may be approved by the Executive 

Officer.

13.1.8 Phase II certification test sites will be configured with one to three P/V vent 

valves, each with an associated ball valve. 

13.2 Bench Testing of Components

Components identified by the engineering evaluation as requiring bench testing to 

verify performance standards and specifications shall be submitted to the Executive 

Officer prior to commencement of operational testing. This testing may be repeated 

during and/or after the operational testing.

13.3 Operational Test of at Least 180 Days

13.3.1 All vapor recovery systems shall be subjected to an operational test. The 

duration of the test shall be for a minimum of 180 days, and for a minimum of 

900,000 gallons of gasoline throughput, except as otherwise provided in 

Sections 18 and 19.

13.3.2 No maintenance shall be performed other than that which is specified in the 

installation, operation and maintenance manual. Such maintenance as is 

routine and necessary shall be performed only after notification of the 

Executive Officer. Occurrences beyond the reasonable control of the applicant, 

such as vandalism or accidental damage by customers (e.g., drive-offs), shall 

not be considered cause for failure of the systems.

13.3.3 Except where it would cause a safety problem, maintenance shall not be 

performed until approval by the Executive Officer has been obtained. In those 

situations that require immediate action to avoid potential safety problems, 

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maintenance may be performed immediately and the Executive Officer shall be 

notified as soon as practicable thereafter and provided with a narrative of the 

reasons giving rise to the maintenance and the nature of the maintenance 

performed. 

13.3.4 For the purpose of certification, the pressure in the underground storage tank 

(UST) shall be monitored and recorded continuously throughout the operational 

test in accordance with TP-201.7 (Continuous Pressure Monitoring). Testing in 

accordance with the procedures specified in TP-201.3, to verify the pressure 

integrity of the test station, shall be conducted throughout the operational test 

period, at intervals not to exceed thirty days. Only data collected during 

periods of pressure integrity shall be deemed valid. No less than three thirtyconsecutive-day periods of valid UST pressure data shall be used to verify that 

the system meets the standard, as specified in Section 4. All valid pressure 

data shall be used to make this determination. If the system fails to meet the 

standard, the data may be examined, and the Executive Officer may exclude 

pressure excursions directly attributable to noncompliant cargo tank deliveries.

13.3.5 Tests of the performance of the system and/or components shall be conducted 

periodically throughout the operational test period. If the results of such tests, 

when extrapolated through the end of the warranty period, show a change that

results in the degradation of a performance standard or specification, the 

Executive Officer may extend or terminate the operational test.

13.4 Equipment Defect and Challenge Mode Testing

13.4.1 Equipment Defect Testing

Testing to determine vapor recovery equipment defects as defined by section 

94006 of title 17, California Code of Regulations, shall be conducted as part of 

certification testing. Vapor recovery equipment defect testing may be allowed 

during the operational test only when the Executive Officer has determined that 

conducting the testing does not affect the normal operation of the system.

13.4.2 Challenge Mode Testing

Testing to verify that the system meets applicable standards under various 

GDF operating conditions may be conducted as part of certification testing. 

Challenge mode tests may be allowed during the operational test only when

the Executive Officer has determined that conducting the testing does not 

affect the normal operation of the system.

13.5 Efficiency and/or Emission Factor Test

Testing to determine the efficiency and/or emission factor of the vapor recovery 

system shall be conducted in accordance with the applicable test procedures specified 

in Section 3 or Section 4 of this procedure. Additional testing may be required if the 

Executive Officer deems it necessary. The additional testing may include, but is not 

limited to the determination of the Reid Vapor Pressure of the fuel, the volume and/or 

mass in the vapor return path, fuel and/or tank temperature, and the uncontrolled 

emission factor. 

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13.6 Vehicle Matrix

A representative matrix of 100 vehicles shall be used when testing to determine the 

Phase II efficiency for the performance standard. The composition of the 

representative vehicle matrix shall be determined for each calendar year by the 

Executive Officer in accordance with TP-201.2A (Determination of Vehicle Matrix for 

Phase II Systems).

13.6.1 Vehicles will be tested as they enter the dispensing facility ("first in" basis) until 

a specific matrix block of the distribution is filled.

13.3.2 The Executive Officer may exclude any vehicle that fails to comply with the 

vehicle fillpipe specifications (“Specifications for Fill Pipes and Openings of 

Motor Vehicle Fuel Tanks” incorporated by reference in title 13, CCR, 

section 2235).

13.6.3 The Executive Officer may exclude a vehicle prior to its dispensing episode only 

if such exclusion and its reason is documented; e.g. unusual facility conditions 

beyond the applicant's control or unusual modifications to the vehicle. All data 

required by the test procedure shall be taken for such vehicles for subsequent 

review and possible reversal of the exclusion decision made during the test. 

The only other reasons for excluding a vehicle from the test fleet are 

incomplete data or the factors in TP-201.2.

13.6.4 Additional vehicles may be chosen for testing at the test site by the Executive 

Officer. The vehicles shall be chosen, according to the Executive Officer's 

judgment, so that any of the first 100 vehicles, which may later be found to 

have invalid data associated with them, shall have replacements from among 

the additional vehicles on a "first in" basis.

13.6.5 A matrix of fewer than 100 vehicles may be made by deleting up to a maximum 

of three vehicles by reducing the representation in any cell or combination of 

cells of the vehicle matrix as specified by TP-201.2A, subject to the following 

requirements for each candidate reduced cell.

(a) No cell shall be reduced by more than one vehicle 

(b) At least one dispensing episode has already been tested in each cell.

(c) None of the other dispensing episodes in the cell have yielded field 

data which, in the Executive Officer's judgment, would cause a failure 

to meet the standards specified in section 4.1. 

(d) All tested dispensing episodes in all cells have yielded field data that, 

in the Executive Officer's judgment, would yield valid test results after 

subsequent review and evaluation.

14. ALTERNATE TEST PROCEDURES AND INSPECTION PROCEDURES

Test procedures other than those specified in this certification procedure shall be used only 

if prior written approval is obtained from the Executive Officer. A test procedure is a 

methodology used to determine, with a high degree of accuracy, precision, and 

reproducibility, the value of a specified parameter. Once the test procedure is conducted, 

the results are compared to the applicable performance standard to determine the 

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compliance status of the facility. Test procedures are subject to the provisions of Section 

41954(h) of the H&SC.

14.1 Alternate Test Procedures for Certification Testing

The Executive Officer shall approve, as required, those procedures necessary to verify 

the proper performance of the system.

14.2 Request for Approval of Alternate Test Procedure

Any person may request approval of an alternative test procedure. The request shall 

include the proposed test procedure, including equipment specifications and, if 

appropriate, all necessary equipment for conducting the test. If training is required to 

properly conduct the test, the proposed training program shall be included. 

14.3 Response to Request

The Executive Officer shall respond within fifteen (15) days of receipt of a request for 

approval and indicating that a formal response will be sent within sixty (60) days. If the 

Executive Officer determines that an adequate evaluation cannot be completed within 

the allotted time, the Executive Officer shall explain the reason for the delay, and will 

include the increments of progress such as test protocol review and comment, testing, 

data review, and final determination. If the request is determined to be incomplete or 

unacceptable, the Executive Officer shall respond with identification of any 

deficiencies. The Executive Officer shall issue a determination regarding the alternate 

procedure within sixty (60) days of receipt of an acceptable request. 

14.4 Testing of Alternate Test Procedures

All testing to determine the acceptability of the procedure shall be conducted by ARB

staff or by a third party responsible to and under the direction of ARB. Testing shall be 

conducted in accordance with the written procedures and instructions provided. The 

testing shall, at a minimum, consist of nine sets of data pairs, pursuant to USEPA 

Reference Method 301, “Field Validation of Pollutant Measurement Methods from 

Various Waste Media”, 40 CFR Part 63, Appendix A, 57 Federal Register page 61992. 

Criteria established in USEPA Reference Method 301 shall be used to determine 

whether equivalency between the two test methods exists. For situations where 

Method 301 is not directly applicable, the Executive Officer shall establish equivalence 

based on the concepts of comparison with the established method and statistical 

analysis of bias and variance. Method Approval of the procedure shall be granted, on 

a case-by-case basis, only after all necessary testing has been conducted. Because 

of the evolving nature of technology and procedures for vapor recovery systems, such 

approval may or may not be granted in subsequent cases without a new request for 

approval and additional testing to determine equivalency. If, after approval is granted, 

subsequent information demonstrates that equivalency between the two methods no 

longer meets the USEPA Method 301 requirements, the Executive Officer shall revoke 

the alternate status of the procedure.

14.5 Documentation of Alternate Test Procedures

Any such approvals for alternate test procedures and the evaluation testing results 

shall be maintained in the Executive Officer's files and shall be made available upon 

request. Any time an alternate procedure and the reference procedure are both 

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conducted and yield different results, the results determined by the reference 

procedure shall be considered the true and correct results.

14.6 Inspection Procedures

Inspection procedures are methodologies that are developed to determine compliance 

based on applicable performance standards or specifications. Inspection procedures 

are typically, but not necessarily, parametric in nature and possess a built-in factor of 

safety, usually at least twice the applicable standard or specification. Inspection 

procedures are not subject to Section 41954(h) of the H&SC. 

Upon submittal of an inspection procedure to ARB, the Executive Officer shall respond 

within thirty (30) days, providing the applicant with a determination of the applicability 

of Section 41960.2(d) or Section 41960.2(e) of the H&SC.

15. DOCUMENTATION OF CERTIFICATION

Documentation of certification shall be in the form of an Executive Order listing the criteria 

requirements of installation and operation of a certified system. The Executive Officer shall 

issue an Executive Order of Certification only to those applicants or manufacturers who 

have demonstrated full compliance with these certification procedures and the ability to 

maintain such compliance as provided herein.

15.1 Executive Order

The certification Executive Order shall include the following items. 

15.1.1 A list of components certified for use with the system. 

15.1.2 Applicable Performance Standards, Performance Specifications and Test 

Procedures. 

15.1.3 Applicable Operating Parameters and Limitations.

15.1.4 Warranty period(s).

15.1.5 Factory testing requirements, if applicable.

15.2 Summary of Certification Process 

A summary of the certification process for each certified system shall be prepared. It 

shall contain documentation of the successful completion of all applicable portions of 

the requirements contained in this Certification Procedure including but not limited to 

the following: All problems encountered throughout the certification process, any 

changes made to address the identified problems, the location of the test station(s), 

the types of testing performed, the frequency and/or duration of any testing or 

monitoring, as appropriate, and any other pertinent information about the evaluation 

process shall be contained in this summary. 

16. DURATION AND CONDITIONS OF CERTIFICATION

Vapor recovery system certifications shall specify the duration and conditions of certification.

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16.1 Duration of System Certification

Vapor recovery systems shall be certified for a period of four years. The certification 

Executive Order shall specify the date on which the certification shall expire if it is not 

renewed as specified in Section 17.

16.2 One Vapor Recovery System per UST System

No more than one certified Phase II vapor recovery system may be installed on each 

underground storage tank (UST) system unless the Phase II systems have been 

specifically certified to be used in combination. For facilities with dedicated vapor 

piping, each underground storage tank and associated dispensing points shall be 

considered a UST system, and different UST systems may have different vapor 

recovery systems. For facilities with manifolded vapor piping connecting storage 

tanks, all the manifolded tanks and associated dispensing points are considered one 

UST system, and only one certified Phase II vapor recovery system may be installed in 

conjunction with that UST system.

16.3 Certification Not Transferable

Upon successful completion of all the requirements, certification shall be issued to the 

company or individual requesting certification, as the Executive Officer deems 

appropriate. If the ownership, control or significant assets of the certification holder 

are changed as the result of a merger, acquisition or any other type of transfer, the 

expiration date of the certification shall remain unchanged. However, no person shall 

offer for sale, sell, or install any system or component covered by the certification 

unless the system or component is recertified under the new ownership, or, in the case 

of a component, is otherwise certified. Systems installed prior to the transfer shall be 

subject to the specifications contained in Section 19 of this procedure.

16.4 Financial Responsibility

The adequacy of the (1) methods of distribution, (2) replacement parts program, (3) 

financial responsibility of the applicant and/or manufacturer, (4) trained network of 

service technicians available at a reasonable cost to the consumer and (5) other 

factors affecting the economic interests of the system purchaser and respond to 

warranty claims shall be evaluated by the Executive Officer and determined to be 

satisfactory to protect the purchaser. A determination of financial responsibility by the 

Executive Officer shall not be deemed to be a guarantee or endorsement of the 

manufacturer or applicant.

If no system has yet been certified that meets additional or amended performance 

standards and specifications, as provided in Section 2.4, the applicant is also 

requested to provide evidence of the commitment of financial investors for the 

commercial manufacture of the system, a projected market demand of the system as 

of the operative date of the standard, a manufacturing plan with scheduled milestones 

for implementation of the plan, an inventory of equipment ready for shipment and a list 

of suppliers and subcontractors which are part of the manufacturing plan.

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16.5 Warranty

The requirements of this section shall apply with equal stringency both to the original 

applicant and to re-builders applying for certification. For systems that include 

components not manufactured by the applicant, the applicant shall provide information 

that shows that all components meet the following requirements:

16.5.1 The applicant or manufacturer, if different from the applicant, of vapor recovery 

system shall provide a warranty for the vapor recovery system and 

components, including all hanging hardware, to the initial purchaser and any 

subsequent purchaser within the warranty period. This warranty shall include 

the ongoing compliance with all applicable performance standards and 

specifications. The applicant and/or manufacturer may specify that the warranty 

is contingent upon the use of trained installers.

16.5.2 The minimum warranty shall be for one year from the date of installation for all 

systems and components. The applicant may request certification for a 

warranty period exceeding the minimum one-year requirement.

16.5.3 The manufacturer of any vapor recovery system or component shall include a 

warranty tag with the certified equipment. The tag shall contain at least the 

following information:

(a) Notice of warranty period;

(b) Date of manufacture, or where date is located on component;

(c) A statement that the component was factory tested and met all applicable 

performance standards and specifications; and

(d) A listing of the performance standards and/or specifications to which it was 

certified. 

16.5.4 The Executive Officer shall certify only those systems which, on the basis of an 

engineering evaluation of such system’s component qualities, design, and test 

performance, can be expected to comply with such system’s certification 

conditions over the one-year warranty period specified above.

16.6 Installation, Operation and Maintenance of the System. 

Systems requiring unreasonable maintenance or inspection/maintenance frequencies, 

as determined by the Executive Officer, shall not be certified. The manufacturer of any 

vapor recovery system or component shall be responsible for developing manual(s) for 

all installation, operation and maintenance procedures and shall be submitted with the 

application as provided by Section 11.5. This manual(s) shall be reviewed during the 

certification process and the certification shall not be issued until the Executive Officer 

has approved the manual(s).

16.6.1 The manual(s) shall include all requirements for the proper installation of the 

system and/or component. The manual(s) shall include recommended 

maintenance and inspection procedures and equipment performance 

procedures, including simple tests the operator can use to verify that the 

system or component is operating in compliance with all applicable 

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requirements. The Executive Officer may require the inclusion of additional 

procedures. 

16.6.2 No changes shall be made to ARB Approved Manuals without the Executive 

Officer’s prior written approval.

16.7 Identification of System Components 

16.7.1 All components for vapor recovery systems shall be permanently identified with 

the manufacturer’s name, part number, and a unique serial number. This 

requirement does not apply to replacement subparts of the primary component. 

Specific components may be exempted from this requirement if the Executive 

Officer determines, in writing, that this is not feasible or appropriate.

16.7.2 Nozzle serial numbers shall be permanently affixed to, or stamped on, the 

nozzle body and easily accessible for inspection. The location of the serial 

number shall be evaluated by the Executive Officer prior to certification.

16.8 Compliance Enforcement

The Executive Officer may, upon complaint or upon his or her own initiative, cause the 

review, inspection and/or testing of any component subject to certification under this 

certification procedure in any manner deemed necessary to determine ongoing 

compliance with certification procedure requirements and standards. Upon a 

determination of noncompliance based on sufficient data and documentation, the 

certification holder shall bear the costs incurred during component review, inspection 

and/or testing.

16.9 Revocation of Certifications

The certification of any system determined not to be achieving the applicable 

performance standards and specifications listed in CP-201 may be revoked. The 

Executive Officer may conduct testing for the purpose of investigation of or verification 

of potential system deficiencies.

Revoked systems may remain in use for the remainder of their useful life or for up to 

four years after the revocation whichever is shorter, provided they comply with all of 

the requirements of section 19. Systems with revoked certifications shall not be 

installed on new installations or major modification of existing installations.

17. CERTIFICATION RENEWAL

At least eighteen months prior to the expiration of the certification period, the applicant may

request to renew the certification. System certifications shall be renewed without additional 

testing if no data demonstrating system deficiencies is found or developed prior to the expiration 

date. During the four-year certification period, system deficiencies shall be identified through 

periodic equipment audits, complaint investigations, certification or compliance tests, surveys, or 

other sources of information. If deficiencies are documented, they shall be resolved to the 

satisfaction of the ARB Executive Officer or the certification shall expire. The ARB Executive 

Officer may extend certifications, for up to one year, if resolution of system deficiencies appears 

likely or if additional time is required to gather and evaluate information.

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The renewal process, along with the sections of this document that describe them, are outlined 

below.

(a) Request for Renewal Section 17.1

(b) Review of the Request Section 17.2

(c) Evaluation of System Deficiencies Section 17.3

(d) Letter of Intent Section 17.4

(e) Renewal of Executive Order Section 17.5

If no request for renewal is received by the ARB within eighteen (18) months of the certification 

expiration date, the Executive Officer shall send a “Notice of Pending Expiration” to the holder of 

the Executive Order. Table 17-1 provides an estimated timeline for the renewal process. The 

timeline is intended to serve as a guide to provide approximate target schedules for completion of 

steps in the renewal process. Failure to send such notice does not serve to extend the 

certification expiration date.

Each applicant submitting a certification renewal request shall be charged fees not to exceed the 

actual cost of evaluating and/or testing the system to determine whether it qualifies for renewal. 

Refer to Section 10 for more information on Fee Payment.

17.1 Request for Renewal

The request for renewal shall be written and signed by an authorized representative, 

and shall include the items listed below:

17.1.1 The Executive Order Number to be renewed;

17.1.2 Identification of any system or component deficiencies through warranty claims 

or other information such as;

(a) User feedback

(b) Contractors/Testers

(c) Distributors

17.1.3 Amendments to the Executive Order such as:

(a) Warranty information

(b) Installation, Operations, and Maintenance Manual

(c) System or component drawings

(d) Component modifications

17.1.4 Updates to the training program;

17.1.5 Factory Testing Requirements;

17.1.6 Agency approvals or determinations, if any system modifications have been 

made since the original approval/determinations (to be submitted prior to 

approval of EO amendment, see Section 1.1), and 

17.1.7 Other information such as the Executive Officer may reasonably require.

17.2 Review Request

The Executive Officer shall review the request and determine if any information 

provided warrants further evaluation/testing or if amendments to the Executive Order 

are needed. The applicant will be notified within 60 days of the receipt of the request 

and whether the submission of additional information is required.

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17.3 Evaluation of System Deficiencies

In addition to the information provided in Section 17.1, the Executive Officer shall 

solicit information on system or component deficiencies through equipment audits, 

complaint investigations, certification or compliance tests, surveys, VRED data (if 

applicable), any deficiencies identified by District staff, or other sources of information.

The Executive Officer may conduct testing to investigate and/or verify system or 

component deficiencies. Testing to evaluate component modifications, VRED lists (if 

applicable), to demonstrate compatibility, or for challenge mode determinations, will be 

subject to the applicable sections of CP-201. If potential deficiencies are noted, an 

evaluation will be conducted to determine if:

17.3.1 The deficiency has been or is in the process of being resolved;

17.3.2 System/component modification(s) are necessary;

17.3.3 Executive Order modifications are necessary;

17.3.4 Additional testing is required. 

17.4 Letter of Intent

After the review has been completed, a letter of intent will be issued to either 1) renew 

the Executive Order or 2) allow the Executive Order to expire. Conditions for Expired 

Certifications are discussed in Section 19 of this certification procedure. The letter of 

intent should be issued prior to the Executive Order expiration date but will not be 

issued prior to completion of the evaluation process described in Sections 17.1, 17.2 

and 17.3. If the evaluation process is not complete and the letter of intent is not issued 

prior to the expiration date then the Executive Officer may determine that installation of 

the system at new facilities or major modifications will not be allowed during the 

extension period.

The Executive Officer may allow up to a 1-year extension if:

17.4.1 resolution is likely but renewal time is insufficient; or

17.4.2 additional time is necessary to gather and evaluate information. 

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17.5 Renewal of Executive Order

Executive Orders approved for renewal shall be valid for a period of four years. 

Table 17-1

Estimated Timeline for the Renewal Process

Action By Time before Expiration

Submittal of renewal request Applicant 18 months

Notice of pending expiration (if no renewal 

request received) ARB 18 months

Solicitation of system information ARB 18 months (or at time of 

receipt of request)

Application review and initial response ARB

Renewal request documentation completed ARB/Applicant 15 months

Submittal of system information for other 

agency approval/determinations Applicant 12 months

If testing will be required

Draft Testing protocol and site identification ARB/Applicant 14 months

Seal site/start test ARB 12 months

End testing ARB 11 to 6 months

Administrative

Letter of Intent and draft Executive Order ARB 3 months

Final Executive Order ARB 0 months

17.6 Denial of Executive Order Renewal

System certifications shall not be renewed if the Executive Officer determines that the 

performance standards and/or specifications in the Executive Order and CP-201 fail to 

be met. Non-renewed systems may remain in use for the remainder of their useful life

or for up to four years after the expiration date, whichever is shorter, provided the 

requirements of Section 19 are met. 

18. AMENDMENTS TO EXECUTIVE ORDERS

Amendments to Executive Orders may be requested to add alternate or replacement components 

to a certified system. Alternate or replacement components may be modifications to originally 

certified components, components originally certified on another system, or new components. 

Sections of this document that describe the process to amend an EO are outlined below.

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(a) Request for Amendment Section 18.1

(b) Review of the Request Section 18.2

(c) Testing Section 18.3

(d) Letter of Intent Section 18.4

(e) Issuance of Executive Order Section 18.5

18.1 Request for Amendment

The request for amendment shall be written and signed by an authorized 

representative of the applicant, and shall include the items listed below:

18.1.1 Executive Order to be amended;

18.1.2 Description of change;

18.1.3 Changes to the Executive Order such as:

(a) System or component drawings

(b) Installation, Operations, and Maintenance Manual

(c) Fuel and System Compatibility

18.1.4 Agency approvals or determinations (to be submitted prior to approval of EO 

amendment, see Section 1.1);

18.1.5 Updates to the training program;

18.1.6 Applicable information specified in Section 11 ; and

18.1.7 Other information such as the Executive Officer may reasonably require.

18.2 Review of the Request

Requests for alternate or replacement components, equipment reconfigurations, or 

software changes will be subjected to an engineering evaluation to determine the level 

of testing required. The Executive Officer may require full operational testing of at 

least 180 days, allow abbreviated and/or limited operational testing, or determine that 

a component modification does not affect the performance of the vapor recovery 

system and therefore no testing is required. 

General criteria to be considered when determining the level of testing are as follows:

(a) extent of physical changes to the component;

(b) extent of material changes to the component;

(c) changes that may affect the durability of the component;

(d) whether performance specifications are the same;

(e) similarity of system designs (i.e. for component transfers); and

(f) information from previous certification testing.

18.2.1 Modified Components

Modified components (i.e., any changes made to vapor recovery components 

certified as part of a system) may be certified if testing demonstrates that 

performance standards and specifications will continue to be achieved. The 

level and duration of operational and/or other testing will be determined by the 

Executive Officer based on an engineering evaluation. 

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18.2.2 Transfer of Components from Another Certified System

Components certified with a system may subsequently be considered for use 

with another certified system of similar design provided that the performance 

standards and specifications of the components, as specified in the application 

for the system, are equivalent. Performance standards and specifications, and 

compatibility, are to be verified by testing and/or engineering evaluation.

Abbreviated/limited operational testing may be considered since the 

component has previously undergone 180-day/full certification testing as part of 

another system. Abbreviated tests will only be allowed for components whose 

performance is not expected to change or degrade over the longer test period. 

18.2.3 New Component(s) that have not been Previously Certified on a System.

Components that have not previously been certified with a system, whether for 

use as an alternate or replacement component, shall be required to undergo 

operational testing of at least 180 days. Limited operational testing may be 

considered for such components, if determined to be appropriate by the 

Executive Officer.

18.2.4 Components that do not affect the performance of the vapor recovery system.

Certification shall not be required for components, either new or modified, 

determined by the Executive Officer not to affect the performance of the vapor 

recovery system. The Executive Officer shall notify the applicant in writing of 

the determination. However, in some cases, such as when a part number 

changes, an amendment to the Executive Order may be required. An 

engineering evaluation shall be conducted to document that the change will not 

affect the performance of the vapor recovery system.

18.2.5 Other Amendments to Executive Orders

(a) System Configurations

Alternative configurations of components of a certified system may 

be considered for certification based on limited and abbreviated

testing. Examples of alternative system configurations include dual 

fill or remote fill for Phase I and processor placement or vapor piping 

options for Phase II.

(b) Software Updates

Software revisions of previously certified software components may 

be considered for certification with limited and/or abbreviated 

testing. The software change may be approved with no testing if the 

Executive Officer finds that the software modifications do not affect 

the vapor recovery system or in-station diagnostic system 

performance.

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18.3 Testing

System or component modifications shall be subjected to sufficient operational, 

challenge mode, and/or VRED testing to verify the performance and durability of the 

modified system relative to the certified system that was originally tested. 

The level of operational testing to be required is determined as outlined in Section 

18.2. Normally, full operational testing of at least 180 days is required. Abbreviated

and/or limited operational tests may be allowed in some cases , at the discretion of 

the Executive Officer. If operational tests are abbreviated, the minimum duration (and 

gasoline throughput requirement) will be specified by the Executive Officer. The test 

procedure and test frequency requirements for limited operational tests will be 

specified by the Executive Officer.

If operational testing is required, then the applicant will choose an appropriate test site 

meeting the requirements of Section 13.1. The applicant shall submit sufficient 

information to demonstrate that the requirements of Section 11.8 are met. 

18.4 Letter of Intent

A letter shall be sent to the applicant stating the Executive Officer’s intent to either 

issue the amended Executive Order or deny the request.

18.5 Issuance of Executive Order

The original expiration date shall be maintained for all Executive Order amendments 

unless a renewal, as described in Section 17, is specifically requested and approved.

Previous versions of the Executive Order are superseded, as discussed in Section 19.

19. REPLACEMENT OF COMPONENTS OR PARTS OF A SYSTEM WITH A TERMINATED, 

REVOKED, SUPERSEDED OR EXPIRED CERTIFICATION

This section applies to systems for which the certification was terminated, revoked, 

superseded, or has expired. Systems that were installed as of the operative date of a new 

standard, or that are otherwise subject to Health and Safety Code section 41956.1, may 

remain in use for the remainder of their useful life or for up to four years after the effective 

date of the new standard or the date of revocation, whichever is shorter, provided they 

comply with all of the specifications of this section. Installed systems that have superseded 

or expired Executive Orders, unless renewed in accordance with Section 17, may remain in 

use for up to four years after the expiration date of the Executive Order, provided they 

comply with all of the specifications of Section 19. 

19.1 Component and Replacement Parts

Components and replacement parts meeting the currently and prospectively 

operative performance standards or specifications may be approved for use as a

replacement part with the no-longer-certified system for the remainder of the 

allowable in-use period of the system. 

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When an approved, compatible component or replacement part that meets the 

operative standards or specifications is determined to be commercially available, 

only that component or replacement part shall be installed except as permitted by

Section 19.2. Approval shall not require the replacement of already-installed 

equipment prior to the end of the useful life of that part or component. The approved 

replacement component shall be considered to be commercially available if that 

component can be shipped within three weeks of the receipt of an order by the 

manufacturer of the component.

19.2 Component or Replacement Part Not Meeting Specifications

A component or replacement part not meeting the currently operative performance 

standards or specifications, but which was certified for use with the system, may be 

used as a replacement only under either of the following circumstances:

(a) no compatible component or part that meets the new standards or 

specifications has been approved as a replacement part, or

(b) during a reasonable time period specified by the Executive Officer to allow 

for the sell-through of existing inventory of previously certified components 

or replacement parts.

19.3 Component or Part Not Certified with System and Not Meeting Specifications

A component or part that was not certified for use with the system, and that does not 

meet all of the currently operative standards or specifications, may be approved as a 

replacement part or component for use on the system provided that there are no 

other commercially available certified parts meeting the most current performance 

standards or specifications. 

19.4 Procedure for Approval of Replacement Parts

19.4.1 A request shall be submitted to the Executive Officer. 

19.4.2 The request shall include the information outlined in Section 18.1 and

information demonstrating that the component is compatible with the 

system.

19.4.3 Requests for replacement parts will be subjected to an engineering 

evaluation to determine the level of testing required. The Executive 

Officer may require full operational testing of at least 180 days and 

other certification tests (e.g., VRED or challenge), allow abbreviated 

and/or limited operational testing, or determine that additional testing is 

not necessary.

General criteria to be considered when determining the level of testing 

are as follows:

(a) similarity of system designs;

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(b) information from previous certification testing; and

(c) compatibility of the replacement part.

19.4.4 The Executive Officer shall issue an approval letter to authorize the use 

of the approved replacement part and to detail any modification(s) to the 

Executive Order for which the part is approved. Requests not granted 

shall be documented with a disapproval letter. 

20. REQUIREMENTS FOR, AND CERTIFICATION OF, LOW PERMEATION HOSES

All hoses which carry liquid fuel against the outermost hose wall shall permeate at a rate of 

no more than 10.0 grams per square meters per day (g/m2

/day) as determined by UL 330 

(7th ed) - Underwriters Laboratories’ Standard for Hose and Hose Assemblies for Dispensing 

Flammable Liquids. 

The UL 330 (7th ed.) testing results shall comprise all of the certification testing for 

certification as a low permeation hose.

20.1 Request for Certification

If UL 330 (7th ed.) testing is not conducted by the Executive Officer, then the Executive 

Officer shall be made a beneficiary of the data within the contract of the applicant and

the testing facility. All data and documentation relevant to determining the permeation 

rate of the hose, as described in section 15 of UL 330 (7th ed.), shall be transmitted to 

the Executive Officer by the testing facility, concurrently when transmitted to the 

applicant. 

The request for certification shall be written and signed by an authorized 

representative of the applicant, and shall include the items listed below:

20.1.1 The applicant shall submit evidence that the hose is compatible with all 

hardware that it will be connected to when in use within the gasoline dispensing 

system. 

20.1.2 The applicant shall provide information regarding the materials specifications of 

all components, including evidence of compatibility with all fuels in common 

use in California and approved as specified in Section 3.8. If the applicant is 

requesting a certification for use only with specified fuel formulations, the 

applicant shall clearly identify, in the application, the included and excluded fuel 

formulations for which certification is requested. 

20.1.3 The applicant shall state the expected useful life of the hose.

20.1.4 All applications shall include detailed engineering drawings of the hose and 

hose fittings. These drawing must provide all hose and fitting dimensions, 

including thicknesses of each individual hose material layer. Further, all hose, 

fitting and gasket materials must be identified. 

20.1.5 Hose installation instructions shall be included with the application.

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20.1.6 The applicant shall submit evidence of financial responsibility to ensure 

adequate protection to the end-user of the product as specified in Section 16.4 

and to demonstrate the ability to pay for certification tests and cost.

20.1.7 The applicant shall comply with the warranty requirements of Section 16.5 and 

shall submit a copy of the warranty for the hose and samples of component 

tags.

20.1.8 All applications shall include the estimated retail price of the hose.

20.2 Hose Lengths

Once a hose of a particular construction has been determined to comply with the low 

permeation hose standard per section 20, the Executive Officer shall specify the 

length of the hose as a condition of certification after considering other applicable 

performance standards or specifications. 

20.3 Identification of Certified Hose

Certified low permeation hoses shall comply with the marking and identification 

requirements of section 16.7

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