### Vapor Recovery Definitions



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DEFINITIONS FOR

VAPOR RECOVERY PROCEDURES

Adopted: April 12, 1996
Amended: March 17, 1999 Amended: February 1, 2001 Amended: July 3, 2002 Amended: October 8, 2003

Amended : May 2 5, 2006

Amended: May 2, 2008

Amended: January 9, 2013

Amended: April 23, 2015California Environmental Protection Agency

Air Resources Board

Vapor Recovery Definitions

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Definitions for Vapor Recovery Procedures

1 APPLICABILITY

The terms and acronyms contained herein are applicable for the Certification and Test Procedures for Vapor Recovery Systems at Gasoline Dispensing Facilities, Gasoline Bulk Plants, Gasoline Terminals, Cargo Tanks, Novel Facilities , and Aboveground Storage Tanks

. They are intended as a clarification of the terms and acronyms used throughout the

Certification and Test Procedures.

2 TERMS

abbreviated operational tests operational tests that are conducted for a duration of less than 180 days

.

aboveground storage ta nk a system that uses a gasoline storage tank that is intended for fixed installations,
without backfill, that is located above or below grade

.

airport refueller a cargo tank which: has a total capacity no greater than 5000 gallons; exclusively
transports avgas and jet fuel; and is not licensed for public highway use.

assist a vapor recovery system, which employs a pump, blower, or other vacuum inducing devices, to collect and/or process vapors at a subject facility.

balance a vapor recovery system which uses direct displacement to collect and/or process vapors at a subject facility.

b elow

- grade vaulted tank

a n aboveground storage tank that is below the level of the earth’s surface contained in
an enclosure, without backfill, and requires continuous vent ilation.

blend valve the valve in a dispenser that typically creates specific product grade by blending two
other product grades in a ratio.

bootless nozzle identifies a type of vapor recovery nozzle that does not have a bellows, or “boot,” over

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.

bulk plant an intermediate gasoline distribution facility where delivery to and from storage tanks is by cargo tank.

cargo tank any container, including associated pipes and fittings, that is used for the transportation of gasolin e on any highway and is required to be certified in accordance with Section 41962 of the California Health and Safety Code.

certification procedures document certified performance standards and performance specifications for vapor recovery systems, and do cument test procedures for determining compliance with such standards and specifications.

The purpose of such procedures is to provide certified performance standards and performance specifications for performance levels equal to or greater than those

lev els required by federal, state, and local statutes, rules, and regulations applicable at the time that any ARB Executive Order certifying a system is signed.

certification tests any test conducted as part of the certification process. Certification tests include operational tests, vapor recovery equipment defect tests, challenge mode tests

, and any bench testing conducted during a system or component certification.

challenge mode testing testing to verify that the system will meet applicable standards and specifications

under various GDF operating conditions

.

compartment a liquid

- tight division of a cargo tank.

compliance tests tests which, as req uired by an ARB Executive Order, are performed after certification to determine compliance with a cert ified performance standard or specification.

district any of California's local air pollution agencies, including the air pollution control districts and air quality management districts.

effective date
For vapor recovery performance standards or perfo rmance specifications originally adopted by ARB prior to January 1, 2012, “effective date,” as used in Health and Safety Code sections 41954(g)(2) and 41956.1(a), shall be the date listed in the applicable
certification procedure.

For vapor recovery perfo rmance standards or performance specifications adopted by ARB on or after January 1, 2012, “effective date,” as used in Health and Safety Code sections 41954(g)(2) and 41956.1(a), means the date the first system or component

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The effective date “starts the clock” for the period of continuing use of installed vapor recovery systems/equipment under Healt h and Safety Code section 41956.1. The period may be up to four years after which the component and/or system may no longer

be used.

emission factor a performance standard expressed as pounds of hydrocarbon per 1,000 gallons of
gasoline dispensed.

eng ineering evaluation

a n evaluation by the Executive Officer of the relationship that vapor recovery system

and /or system component design, operation, and defects, have on the performance of
the vapor recovery system . The evaluation m ay include

, but is not limited to

, an analysis
based on physical science, chemistry

, and engineering data from test procedures, in

- use performance audits, challenge mode tests

, or observations conducted by the Executive

Officer or technical or other information made available to the Executive Officer

.

Executive Order a document issued by the Executive Officer that certifies a vapor recovery system.

existing installation any gasoline dispensing facility that is not a new installation.

expired certification

any system or comp onent certification that has reached the end of it’s certification
period and has not been renewed or extended by the Executive Officer.

full operational tests operational tests where the complete complement of test procedures are conducted

to demonst rate compliance with all the applicable standards and specifications in CP

201.

gastight exhibiting no vapor leak(s).

gasoline any petroleum distillate having a Reid vapor pressure of four pounds or greater and meeting the requirements of title 13, Cal ifornia Code of Regulations, division 3, chapter 5, article 1, beginning with section 2250.

gasoline dispensing facility

a g asoline d ispensing f acility (GDF) is a stationary source which receives gasoline from cargo tanks and/or dispenses gasoline directl y into the fuel tanks of motor

vehicles.

hold

- open latch

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physical contact with t he nozzle during re fueling operations.

incinerator any assist processor designed to control hydrocarbon emissions by any kind of oxidation which generates exhaust which is so hot and variable in volume that such volume can only be determined by correlated measurements and thermodynamic principles, rather than direct measurement.

insertion interlock any certified mechanism which is an integral part of a bellows

- equipped dispensing nozzle which prohibits the dispensing of fuel unless the bellows has been

c ompressed.

i n

- station diagnostics (ISD)
equipment that provides continuous real

- time monitoring of critical emission

- related
vapor recovery system parameters and components, and alerts the station operator

when a failure mode is detected so that correctiv e action is taken.

leak detection solution any solution containing soap, detergent or similar materials which promote formation of bubbles, and which is used to wet joints or surfaces from which gas may be leaking, and which causes bubbles to form at the site of any escaping gas.

leak free liquid leak of no greater than three drops per minute.

limited operational tests operational tests where only the test procedures appropriate for a specific component(s) are conducted to demonstrate compliance with spe cific standards and specifications.

liquid condensate trap (knock

- out pot, thief port)
a device designed to collect liquid that condenses in the vapor return line in a manner
that allows it to be evacuated and ensures that the vapor return line will not be blocked by the accumulation of liquid.

liquid leak the dripping of liquid organic compounds at a rate in excess of three (3) drops per minute from any single leak source other than the liquid fill line and vapor line disconnect operations. For cargo tanks, a liquid leak from liquid product line and vapor line disconnect operations is defined to be:

more than two (2) milliliters liquid drainage per disconnect from a top loading operation; or

more than ten (10) milliliters liquid drainage from a botto m loading operation. Such liquid drainage for disconnect operations shall be determined by computing the average drainage from three consecutive disconnects at any one permit unit.

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- 200, Page 4liquid removal device a device designed specifically to remove liquid fr om the vapor return portion of a vapor

hose.

liquid retention
any liquid gasoline retained in the nozzle’s liquid pa th or the vapor passage of the nozzle/hose assembly, on the atmospheric side of the vapor check valve , that is subject
to potential s pillag e or evaporation

.

low permeation hose

a hose that is used to dispens e gasoline and complies with the per meation performance standard as determined by UL 330 (seventh edition)

.

lower explosive limit (LEL)

the minimum volumetric fraction of combusti ble gas, in air, which will support the propagation of flame; commonly expressed in units of percent (%) or parts per million (ppm).

Standard references for physical properties of combustible gases differ by a few percent in their listed values for lower explosive limit (LEL) and differ also in terms employed. For clarity:

“LEL” shall mean the same as “lower limit of flammability,” “lower end of the explosive range”, and other related terms in common technical discourse.

The authoritative reference for d etermination of LEL values shall be the chapter GASEOUS FUELS, by C. C. Ward, pages 7

- 21 to 7

- 24 of Marks' Standard Handbook for Mechanical Engineers , Eighth Edition, McGraw Hill, New York,

1978.

The LEL for propane is 2.1% (21,000 ppm)

. The LEL for metha ne is 5.0 % (50,000 ppm)

.

major modification the modification of an existing GDF that makes it subject to the same requirements to which a new installation is subject.

Modification of the Phase I system that involves the addition, replacement, or removal of an underground storage tank, or modification that causes the tank top to be unburied, is considered a major modification of the Phase I system.

Modification of the Phase II system that involves the addition, replacement or removal of 50 percent or mor e of the buried vapor piping, or the replacement of dispensers, is considered a major modification of the Phase II system. The replacement of a dispenser is not a major modification when the replacement is occasioned by end user damage to a dispenser.

Phase II system upgrades to make the systems ORVR compatible do not constitute a major modification. Phase II system upgrades to comply with the under

- dispenser containment requirement (CCR, Title 23, section 2636(h)(1)) initiated before January

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- 201 section 4.1 0

.

The replacement of an aboveground storage tank is a major modification. The

installation of an AST after re trofitting with standing loss controls or the exchange of

an AST for a standing loss control retrofitted AST of equal capacity to comply with the requirements of CP

- 206 is not a major modification

.

mini

- boot a device used on vapor recovery nozzles to enha nce collection efficiency without requiring a tight seal at the vehicle fillpipe

.

multi

- product dispenser (MPD)
a dispenser of multiple products with one or more hoses per dispenser side.

motor vehicle

as defined in Section 39039 of the Health and Safe ty Code

.

National Institute of Standards and Technology the United States Department of Commerce, National Institute of Standards and Technology (NIST) which, through its Standard Reference Materials (SRM) Program, provides science, industry, and governme nt with a source of well

- characterized materials certified for chemical composition or for some chemical or physical property. These materials are designated SRMs and are used to calibrate instruments and to evaluate analytical methods and systems, or to produce scientific data that can be referred readily to a common base.

new installation a gasoline dispensing facility that is not constructed as of the operative date of the

latest amendments to Certification Procedure CP

- 201 or CP

- 206, or a gasoline

dis pensing facility constructed as of the operative date of the latest amendments to

Certification Procedure CP

- 201 or CP

- 206 that has undergone a major modification on or after the operative date of the amendments.

novel a modifier which indicates a vapor recovery system (or system feature) or facility to which the written procedures (of general applicability) do not apply; for such a novel system or facility, new system

- specific or facility

- specific performance specifications and test procedures shall be developed and required as conditions of certification.

nozzle bellows (nozzle boot)
the flexible device around the spout of some vapor recovery nozzles, utilized to contain
the vapor displaced from the vehicle.

on

- board refueling vapor recovery system

ve hicle based system required by title 13, California Code of Regulations, section 1978, or Part 86, Code of Federal Regulations.

operational test testing conducted for the purpose of certification of a vapor recovery system or

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term “ operational test ” is intended to imply certification tests conducted on a GDF operating under normal conditi ons . This definition excludes vapor recovery equipment defect and bench tests conducted as part of a system certification. Challenge mode testing may be conducted during an operational test if the Executive Officer determines that such testing will not i mpact the operational test.

operative date the date on which a regulated person is first required to act or is prohibited from acting. The operative date determines when new installations and facilities undergoing major modifications must use equipment t hat meets the applicable performance standard and/or performance specification

.

ORVR fleet facility a gasoline dispensing facility that is exempted from Phase II vapor recovery requirements because it fuels primarily vehicles that are equipped with on

- bo ard refueling vapor recovery systems. The term includes only those facilities that have been exempted from Phase II vapor recovery by district rules, as described in the February 28, 2008 memo 1 from ARB to Air Pollution Control Officers.

over

- fill preve ntion device a device designed to stop the delivery of product to a storage tank to prevent the over

filling of the tank and potential spillage.

phase I control of vapors during the transfer of gasoline from the cargo tank to the gasoline dispensing faci lity.

phase II the control of vapors during the transfer of gasoline from the gasoline dispensing facility to the vehicle and storage of gasoline at the gasoline dispensing facility.

portable fuel container any container or vessel that is designed or use d primarily for receiving, transporting, storing, and dispensing fuel.

pressure

- related fugitive emissions those emissions of hydrocarbon vapors emitted from a GDF due to a positive gauge pressure in the headspace (ullage) of the gasoline storage tank , as determined using the
procedures outlined in TP

- 201.2F

. These emissions do not include transfer emissions at the nozzle/fillpipe interface

, emissions from the processor, nor the emissions from the vent pipe P/V valve, provided that the cracking pressure o f the P/V valve has been

exceeded.

processor a vapor processor, either destructive or non

- destructive, that operates to manage the pressure of the vapor in the gasoline storage tank within specified limits.

1 The ARB memo is available at h ttp://www.arb.ca.gov/vapor/e85/e85orvrletter022008.pdf

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the absolute vapor pressure of volatile petroleum liquids, except liquefied petroleum gases, as determined in accordance with ASTM D323

- 89.

renewed certification

an Executive Order for vapor recovery equipment or system reviewed and approved for renewal by the Executive Officer o n or before the expiration date as stated in the

Executive Order.

revoked certification

an Executive Order for vapor recovery equipment or system which has been determined by the Executive Officer to not be in compliance with the applicable performance s tandards and specifications.

rigid piping any piping material with a bend radius that exceeds six feet as determined by TP

201.2G

.

rural a ir district one of California's Air Pollution Control Districts (APCD) or Air Quality Management Districts (AQMD ). with a population density less than 300 persons per square mile,

based on the most recent Census data as tabulated by the California D epartment of

Finance.

spillage liquid which enters the environment from a dispensing facility, except for liquid which leaves such dispensing facility in a vehicle tank or cargo tank.

The following definitions apply for the determination of spillage as defined above:

pre

- dispensing spillage spillage which occurs between:

the time when a dispensing nozzle is removed from a dispenser and

the time when the dispensing nozzle is inserted into the tank receiving the dispensed liquid

.

dispensing spillage spillage which occurs between :

the time when the dispensing nozzle is inserted into the tank receiving the dispensed liqu id and

the time when the dispensing nozzle is withdrawn from the tank receiving the dispensed liquid

.

post

- dispensing spillage spillage which occurs between :

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the time when the dispensing nozzle is returned to a dispenser.

spitback the forcible ejection of liquid gasoline upon activation of the nozzle’s primary shutoff

mechanism.

spitting liquid gasoline dispensed or released from the nozzle spout when th e trigger is depressed without the dispenser being activated

.

static torque of phase I adaptor the amount of torque, measured as pound

- inches, required to start the rotation of a rotatable phase I adaptor as measured in accordance with TP

- 201.1B.

standin g loss control the control of vapors from ASTs when no Phase I or Phase II gasoline transfers are occurring

.

submerged fillpipe any fillpipe which has its discharge opening entirely submerged when the liquid level

is six inches above the bottom of the ta nk.

when referring to a tank which is loaded from the side, any fillpipe which has its discharge opening entirely submerged when the liquid level is 18 inches above the

bottom of the tank.

super s eded certification

a n Executive Order (EO) that has been r eplaced by a revised version of the

Executive Order that reflects changes in the vapor recovery equipment or system

.

summer fuel fuel that is required to comply with the requirements of title 13, California Code of Regulations, section 2262.4.

temperatu re attenuation a standing loss control for aboveground storage tanks that controls the effects of diurnal ambient temperature or solar radiation on fuel surface temperature

.

test procedures specify equipment and techniques for determining the performance and compliance status of vapor recovery systems relative to certified performance standards and associated certified performance specifications.

terminal a primary distribution facility for the loading of cargo tanks that deliver gasoline to bulk plants, service stations and other distribution points; and where delivery to the facility storage tanks is by other than by cargo tank.

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status of certification of any systems or any system components certified under
performance standard s in effect prior to the adoption of revised standards and installed
prior to the operative date of the revised standards.

top off the attempt to dispense gasoline to a motor vehicle or utility equipment fuel tank after the
dispensing nozzle primary shu toff mechanism has engaged. The filling of a class of vehicle tanks which, because of the configuration of the fill pipe, cause premature activation of the primary shutoff, shall not be considered topping off.

transition flow

the flow rate at which a tra nsition occurs in the slope of the plot of flow rate versus pressure for a valve tested per TP

- 201.2B.

ullage the empty volume of any container. For example, the ullage of a tank designed primarily for containing liquid is the volume of the tank minus th e volume of the liquid.

underground storage tank any one or combination of tanks, including pipes connected thereto, which is used for the storage of gasoline, which is substantially or totally beneath the surface of the ground and does not have an emerge ncy vent.

unihose dispenser

a multi

- product dispenser that has only one hose and nozzle per dispenser side.

urban a ir district one of California's Air Pollution Control Districts (APCD) or Air Quality Management Districts (AQMD) with a population density greater than or equal to 300 persons per square mile, based the most recent U.S. Census data as tabulated by the California

D epartment of Finance.

useful life the period of time during which a vapor recovery system or component can be used
as intended, conforms to manufacturer’s specifications, and complies with all applicable ARB regulations, standards, and specifications.

vapor guard ( see mini

- boot)

vapor leak a vapor leak measured as greater than 10,000 parts per million on a methane calibrated gas detector, measured at a minimum distance of one centimeter from the source in accordance with EPA Reference Method 21, compliance with the static pressure integrity requirements as determined by TP

- 201.3, bagging of individual
components, or the presence of bubbles using a liquid leak detector solution.

vapor recovery system a vapor gathering system capable of collecting the hydrocarbon vapors and gases discharged and a vapor disposal system capable of processing such hydrocarbon

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- 200, Page 10vapors and gases so as to prevent their emission into the atmosphere, with all tank gauging and sampling devices gastight except when gauging or sampling is taking place.

vapor recovery system for gasoline dispensing facility (GDF) all equipment used at a GDF to recover, contain, and transfer gasoline vapors generated by refueling vehicle tanks, gasoline storage tanks, and portable fuel containers, including, but not limited to, dispensing equipment, couplers, fittings, processors, control boards, gauges, and monitors.

vent

any p lumbing which conveys an air/vapor mixture from a vapor recovery system to the atmosphere.

winter fuel fuel that is not required to comply with the regulations that are applicable to summer fuel.

3 ACRONYMS

ACF actual cubic feet (see CF, CFH, and CFM) a t sampling conditions.

APCD

one of California's Air Pollution Control Districts.

AQMD one of California's Air Quality Management Districts.

A/L Ratio or A/L air to liquid ratio.

ARB

Air Resources Board.

ARB Executive Officer or Executive Officer

the Executive Officer of the ARB or his or her authorized representative or designate.

AST aboveground storage tank

.

CARB

California Air Resources Board.

CCR California Code of Regulations.

CF

cubic feet.

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CT# cargo tank number issued by the Executive Officer.

CFH cubic feet per hour.

CFM cubic feet per minute.

DMS California Department of Food and Agriculture, Division of Measurement Standards.

DOSH California Department of Industrial Relations, Division of Occupation al Safety and

Health.

Eng. Eval. engineering evaluation.

EO

Executive Order.

FID

flame ionization detector.

GC/FID gas chromatograph with flame ionization detector.

GDF gasoline dispensing facility.

H&SC California Health and Safety Code.

ID

inside diameter.

ID#

identification number.

ISD

In

- Station Diagnostics.

LDS

leak detection solution.

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LPM liters per minute.

mmHg millimeters of mercury (unit of pressure).

MPD

multi

- product dispenser.

N 2 nitrogen gas.

NDIR

n on

- dispersive infrared.

NEMA

National Electrical Manufacturers Association

NIST National Institute of Standards and Technology.

NPT
National pipe threads

ORVR onboard refueling vapor recovery.

PV or P/V Valve
pressure/vacuum relief vent valve.

QA/QC quality assurance/quality control

SFM

California State Fire Marshal.

Sec.

section.

SLC Standing Loss Control

Spec. specification.

Std.

standard.

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State Water Resources Control Board

.

UST
underground storage tank.

VRED
vapor recovery equipme nt defect

.

WC water column (unit of pressure normally expressed in inches).

WC g water column, gauge (unit of pressure normally expressed in inches).

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