Phase II Enhanced Gasoline Vapor Recovery and In-Station Diagnostics

1
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
2
Gasoline Vapor Recovery
Vapors return to truck
Vapors return to tank
Phase II
Phase I
3
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

4
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

5
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

6
History of Vapor Recovery

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

7
The Benefits of VaporRecovery

• 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)

8
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.

9
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

10
(No Transcript)
11
Why Enhanced VaporRecovery?

• 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!

12
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)

13
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.

14
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

15
ISD Implementation Deadlines
16
Certified ISD Systems
17
Veeder Root In-Station Diagnostics
18
INCON Vapor Recovery Monitoring (VRM)
19
ISD System Components

• Console
• Monitoring Software
• Vapor Flow Meter
• Vapor Pressure Sensor
• Interface and Output Modules

20
Console
21
Vapor Flow Meter

• VFM measures the volume of gasoline vapor
  returned from a vehicle during gasoline
  dispensing episodes.

22
Vapor Flow Meter
23
Vapor Pressure Sensor
INCON
Veeder Root
24
(No Transcript)
25
Dispenser Interface Module

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

26
(No Transcript)
27
(No Transcript)
28
(No Transcript)
29
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

30
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

31
Healy Phase II Enhanced Vapor Recovery System

• CARB Executive Orders VR-201/202

32
System Components

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

33
Healy Model 900 Nozzle
34
Healy Inverted Coaxial Hose
35
Healy Clean Air Separator
36
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

37
(No Transcript)
38
Healy Model VP 1000 Vacuum Pump
VP 1000
Vapor return line
39
Vapor Systems Technologies (VST) Phase II
Enhanced Vapor Recovery System

• CARB Executive Orders VR-203/204

40
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)

41
VST Model VST EVR-NB Nozzle
42
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

43
Pressure Management Control (PMC)
44
Veeder Root Vapor Polisher
VST Membrane Processor
45
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

46
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
  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

47
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

48
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

49
Estimated Cost for Phase II EVR and ISD Upgrades
Number of Dispensers Number of Dispensers Number of Dispensers 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
50
Questions?
51

District Office Contacts
Northern Region Dillon Collins 4800 Enterprise Way Modesto, CA 95356 [phone] Fax [phone]
Central Region Rob Vinson 1990 E Gettysburg Fresno, CA 93726 [phone] Fax [phone]
Southern Region Vernon McKnight 34946 Flyover Ct. Bakersfield, CA 93308 [phone] Fax [phone]
www.valleyair.org