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Phase II Enhanced GasolineVapor Recovery and In-Station

DiagnosticsDillon Collins

Senior Air Quality InspectorSan Joaquin Valley Air Pollution Control District

February 19, 2009

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Gasoline Vapor Recovery

Phase I Phase II

Vapors return to

truckVapors return to

tank

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History of Vapor Recovery

1972 and 1973 BAAQMD and SDCAPCD adopt

regulations requiring vapor recovery

systems 1974

Health and Safety Code 41954 adopted

to establish CA vapor recoveryequipment certification program

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History of Vapor Recovery

1987 Benzene Air Toxic Control Measure is

adopted which requires vapor recovery

at any CA station that pumps greaterthan 480,000 gallons/year

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History of Vapor Recovery

1990 The Federal Clean Air Act requires the

installation of gasoline vapor recovery

systems at stations with a throughputgreater than 100,000 gals/month inozone nonattainment areas across the

United States AND Onboard RefuelingVapor Recovery on vehicles

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History of Vapor Recovery

1998 First ORVR cars sold

2000

California Air Resources Boardapproves Enhanced Vapor Recovery

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The Benefits of VaporRecovery 16 billion gallons/year CA gasoline sales

Uncontrolled emissions of 8.4 lbs of gasolinevapor for each 1000 gallons gasoline transferred

347 tons/day vapor recovery emissionreductions from pre-EVR systems

25 tons/day from Enhanced Vapor Recovery

Total Benefit: 372 tons/day or 120,000 gallonsliquid gas/day or $360,000 savings/day($3.00/gal)

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Enhanced Vapor Recovery

By April 1, 2009, nearly 13,000 gasolinedispensing facilities in California will needto obtain permits, purchase EVR

equipment, and have the installationperformed by a certified contractor.

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Enhanced Vapor Recovery

ApprovedPhase II EVR systems arecertified to be at least 95% efficient at

controlling vapors and to not allowmore than 0.38 pounds ofhydrocarbons per 1000 gallons

dispensed to be released

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Why Enhanced VaporRecovery?

Equipment in field not working as certified

State Implementation Plan emissionreductions settlement agreement

Incompatibility of some systems withOnboard Refueling Vapor Recovery(ORVR)

EVR addresses all of these areas!

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EVR Improvements

More stringent certification requirements Dripless nozzles less spillage

Control of fugitive emissions

Better componentsless system leaks

Compatible with vapor recovery systemson newer vehicles (ORVR)

Vapor recovery system monitor (ISD)

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In-Station Diagnostics (ISD)

Equipment is designed to monitor thecollection and containment of vapors byvapor recovery equipment.

ISD software continuously monitors thevapor recovery equipment, maintains testrecords, provides test reports, generatesalarms following test/equipment failures,

and shuts down the site upon theoccurrence of designated alarms.

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In-Station Diagnostics (ISD)

Automatically notifies station operator ofsystem failures

Indirectly reduces emissions by early

detection and prompt repair Supplements district inspections

Ties in to existing UST leak monitors

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ISD Implementation Deadlines

> 1.8 million

gallons/yr

September

2009

600,000 1.8 million

gallons/yr

September

2010

< 600,000

gallons/yr

Exempt

From ISD

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Certified ISD Systems

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Veeder Root In-Station

Diagnostics

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INCON Vapor Recovery

Monitoring (VRM)

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ISD System Components

Console

Monitoring Software

Vapor Flow Meter

Vapor Pressure Sensor

Interface and Output Modules

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Console

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Vapor Flow Meter

VFM measures thevolume of gasolinevapor returned froma vehicle duringgasoline dispensingepisodes.

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Vapor Flow Meter

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Vapor Pressure Sensor

INCON

Veeder Root

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Dispenser Interface Module

Dispenser Interface Module (DIM)collects data for the volume ofliquid gasoline delivered duringeach dispensing event

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Assessment of ISD Implementation(as evaluated by CARB, Sept. 2008)

ISD is detecting performance degradation

- Confirmed by compliance testing

District and contractors gaining familiarity withaccessing and understanding reports

Further guidance needed for alarms Contractors being strained with response calls

- Required to respond to warnings where noproblems are found that warrant repair

- Impacting ability to upgrade facilities forEVR deadline

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Certified Phase II EVR Systems

Two systems currently certified Healy EVR Phase II System (assist)

Not including ISD: VR-201

Including ISD: VR-202

VST EVR Phase II System (balance) Not including ISD: VR-203

Including ISD: VR-204

Other systems currently in cert process Takes about 1 year to complete

certification

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System Components Nozzle- Healy Model 900

Hose- Inverted Coaxial

Vapor path on interior/ product outside

Clean Air Separator

Dispenser Vacuum Pump (Model VP1000)

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Healy Model 900 Nozzle

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Healy Inverted Coaxial Hose

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Healy Clean AirSeparator

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Clean Air Separator Healy Systems Clean Air Separator (CAS)

consists of a 400 gallon steel vaporprocessor vessel that contains a fuel

resistant bladder to hold excess gasolinevapors that may develop in gasolinestorage tanks during idle periods of

gasoline dispensing facility operation

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Healy Model VP 1000 Vacuum

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Healy Model VP 1000 VacuumPump

VP 1000

Vapor return line

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System Components

Nozzle- Model VST EVR-NB

Hose- Coaxial

Pressure Management Control (PMC)

PMC Pressure Sensor VST Membrane Processor Or;

Veeder Root Vapor Filter

Vapor Polisher (carbon canister)

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VST Coaxial Hose with LiquidRemoval Device (Venturi)

Venturi creates avacuum in the fuelline and uses small

tubing to extractcondensation andexcess fuel from the

vapor line,preventing blockagesin the vapor path

Pressure Management Control

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Pressure Management Control(PMC)

Veeder

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VeederRootVapor

Polisher

VST MembraneProcessor

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Membrane Processor Function

Separates fresh air from hydrocarbonsand pumps fresh air from the UST whilereturning greater than 99% of the VOC'sto the vapor containment system

Reduces vapor growth and allows thestorage system to maintain a constantnegative pressure

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Vapor Polisher Function Mounts directly onto stations existing vent riser

and is tapped into the vapor containment space

Activated carbon filters vapors from the vent pipeentering through an inlet at the bottom of the

canister, removing hydrocarbons Releases cleansed air, reducing the pressure in

the underground storage tank

Operation monitored through a control moduleinterfaced to the TLS-350

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Vapor Polisher Function

When UST pressure goes positiveTLS 350 opens output port valve of

the canister allowing vapor to enter

Vapor flows through andhydrocarbons are captured by activecarbon inside

UST pressure falls

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Vapor Polisher Function

When UST pressure goes negativeTLS 350 opens output port valve of

the canister allowing fresh air to enter

Fresh air flows through andhydrocarbons are removed fromcarbon and returned to UST

Evaporative loss reduced

E ti t d C t f Ph II EVR

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Estimated Cost for Phase II EVRand ISD Upgrades

Number of Dispensers

2 4 6 12

EVR Phase II $17,240 $24,925 $32,765 $56,285

ISD $13,600 $16,500 $19,700 $28,900

Total(to nearest $100) $30,800 $41,400 $52,500 $85,200

Does not include cost to replace dispensers, obtainpermits, install electrical lines or conduct start-up tests

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Questions?

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