Phase II Enhanced Gasoline Vapor Recovery and In-Station Diagnostics Dillon Collins Senior Air Quality Inspector San Joaquin Valley Air Pollution Control District February 19, 2009

Gasoline Vapor Recovery Vapors return to truck Vapors return to tank Phase II Phase I

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 recovery equipment certification program

History of Vapor Recovery 1987 Benzene Air Toxic Control Measure is adopted which requires vapor recovery at any CA station that pumps greater than 480,000 gallons/year

History of Vapor Recovery 1990 The Federal Clean Air Act requires the installation of gasoline vapor recovery systems at stations with a throughput greater than 100,000 gals/month in ozone nonattainment areas across the United States AND Onboard Refueling Vapor Recovery on vehicles

History of Vapor Recovery 1998 First ORVR cars sold 2000 California Air Resources Board approves Enhanced Vapor Recovery

The Benefits of Vapor Recovery • 16 billion gallons/year CA gasoline sales Uncontrolled emissions of 8.4 lbs of gasoline vapor for each 1000 gallons gasoline transferred 347 tons/day vapor recovery emission reductions from pre-EVR systems 25 tons/day from Enhanced Vapor Recovery Total Benefit: 372 tons/day or 120,000 gallons liquid gas/day or $360,000 savings/day ($3.00/gal)

Enhanced Vapor Recovery By April 1, 2009, nearly 13,000 gasoline dispensing facilities in California will need to obtain permits, purchase EVR equipment, and have the installation performed by a certified contractor.

Enhanced Vapor Recovery • Approved Phase II EVR systems are certified to be at least 95% efficient at controlling vapors and to not allow more than 0.38 pounds of hydrocarbons per 1000 gallons dispensed to be released

Why Enhanced Vapor Recovery? • Equipment in field not working as certified State Implementation Plan emission reductions settlement agreement Incompatibility of some systems with Onboard Refueling Vapor Recovery (ORVR) EVR addresses all of these areas!

EVR Improvements • More stringent certification requirements “Dripless” nozzles – less spillage Control of fugitive emissions Better components – less system leaks Compatible with vapor recovery systems on newer vehicles (ORVR) Vapor recovery system monitor (ISD)

In-Station Diagnostics (ISD) Equipment is designed to monitor the collection and containment of vapors by vapor recovery equipment. ISD software continuously monitors the vapor recovery equipment, maintains test records, provides test reports, generates alarms following test/equipment failures, and shuts down the site upon the occurrence of designated alarms.

In-Station Diagnostics (ISD) Automatically notifies station operator of system failures Indirectly reduces emissions by early detection and prompt repair Supplements district inspections Ties in to existing UST leak monitors

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

Certified ISD Systems

Veeder Root In-Station Diagnostics

INCON Vapor Recovery Monitoring (VRM)

ISD System Components Console Monitoring Software Vapor Flow Meter Vapor Pressure Sensor Interface and Output Modules

Console

Vapor Flow Meter VFM measures the volume of gasoline vapor returned from a vehicle during gasoline dispensing episodes.

Vapor Flow Meter

Vapor Pressure Sensor INCON Veeder Root

Dispenser Interface Module Dispenser Interface Module (DIM) collects data for the volume of liquid gasoline delivered during each dispensing event

Assessment of ISD Implementation (as evaluated by CARB, Sept. 2008) ISD is detecting performance degradation - Confirmed by compliance testing District and contractors gaining familiarity with accessing and understanding reports Further guidance needed for alarms Contractors being strained with response calls - Required to respond to warnings where no problems are found that warrant repair - Impacting ability to upgrade facilities for EVR deadline

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

Healy Phase II Enhanced Vapor Recovery System CARB Executive Orders VR-201/202

System Components Nozzle- Healy Model 900 Hose- Inverted Coaxial Vapor path on interior/ product outside Clean Air Separator Dispenser Vacuum Pump (Model VP1000)

Healy Model 900 Nozzle

Healy Inverted Coaxial Hose

Healy Clean Air Separator

Clean Air Separator Healy Systems Clean Air Separator (CAS) consists of a 400 gallon steel vapor processor vessel that contains a fuel resistant bladder to hold excess gasoline vapors that may develop in gasoline storage tanks during idle periods of gasoline dispensing facility operation

Healy Model VP 1000 Vacuum Pump Vapor return line

CARB Executive Orders VR-203/204 Vapor Systems Technologies (VST) Phase II Enhanced Vapor Recovery System CARB Executive Orders VR-203/204

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”)

VST Model VST EVR-NB Nozzle

VST Coaxial Hose with Liquid Removal Device (Venturi) Venturi creates a vacuum in the fuel line and uses small tubing to extract condensation and excess fuel from the vapor line, preventing blockages in the vapor path

Pressure Management Control (PMC)

Veeder Root Vapor Polisher VST Membrane Processor Veeder Root Vapor Polisher

Membrane Processor Function Separates fresh air from hydrocarbons and pumps fresh air from the UST while returning greater than 99% of the VOC's to the vapor containment system Reduces vapor growth and allows the storage system to maintain a constant negative pressure

Vapor Polisher Function Mounts directly onto station’s existing vent riser and is tapped into the vapor containment space Activated carbon filters vapors from the vent pipe entering 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 module interfaced to the TLS-350

Vapor Polisher Function When UST pressure goes positive TLS 350 opens output port valve of the canister allowing vapor to enter Vapor flows through and hydrocarbons are captured by active carbon inside UST pressure falls

Vapor Polisher Function When UST pressure goes negative TLS 350 opens output port valve of the canister allowing fresh air to enter Fresh air flows through and hydrocarbons are removed from carbon and returned to UST Evaporative loss reduced

Estimated Cost for Phase II EVR and 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, obtain permits, install electrical lines or conduct start-up tests

Questions?

District Office Contacts Northern Region Dillon Collins 4800 Enterprise Way Modesto, CA 95356 (209) 577-6400 Fax: (209) 557-6475 Central Region Rob Vinson 1990 E Gettysburg Fresno, CA 93726 (559) 230-5950 Fax (559) 230-5950 Southern Region Vernon McKnight 34946 Flyover Ct. Bakersfield, CA 93308 (661) 392-5500 Fax: (661) 392-5585 www.valleyair.org