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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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