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Gasoline Vapor Recovery

Gasoline vapors are released to the atmosphere every time a fuel tank is filled with gasoline. This happens with the filling a large underground storage tank as well as the fuel tank of a motor vehicle. Vermont adopted regulations, referred to as Stage I and Stage II vapor recovery, to require the control of these vapor emissions. Stage I vapor recovery refers to the capture of gasoline vapors generated when a tank truck delivers gasoline to a storage tank at a gasoline dispensing facility (GDF). As the storage tank is filled, the vapors are transferred to the tank truck, which then carries the vapors to the gasoline distribution terminal. At the terminal, the collected vapors are controlled when the tank truck is refilled, usually by incineration.  Owners of GDFs are required to install and maintain the equipment necessary for Stage I vapor recovery consisting mainly of fittings on the gasoline storage tanks to accommodate vapor recovery hoses from the tank truck and pressure vacuum vent valves to minimize the loss of vapors from the storage tank vents.

Stage II vapor recovery refers to the capture of gasoline vapors generated when a motor vehicle fuel tank is filled at a GDF.  Most motor vehicles are now equipped with an onboard refueling vapor recovery system that controls the vapors emitted during refueling. This led to the Legislature passing a law in 2009 that repealed Vermont’s Stage II regulation as of January 1, 2013.  

 

An underground tank at a gasoline station is being filled, and the gasoline vapors are being returned to the tank truck.

Information:

The following guidance documents, forms and fact sheets are related to gasoline vapor recovery equipment and the associated inspection and test observation activities of the Compliance Section:

  1. Fact Sheet - Stage I Gasoline Vapor Recovery

  2. List of Stage I Testing Firms

  3. List of Stage I Installation Contractors pdf image


  4. Stage I Vapor Recovery Monthly Inspection Checklist (Excel File)

  5. Stage II Decommissioning Procedure


  6. Decommissioning Checklist * - electronic (use this form to fill out the form on your computer)

  7. Decommissioning Checklist - manual (use this form to fill out the form by hand)

    *NOTE: These checklists can be downloaded and filled out electronically, but must be printed out and signed by a responsible individual. The signed checklist can then be mailed, faxed, or scanned and emailed to the Air Quality & Climate Division.

last update 6/2/15

 

   
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