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Vapor Recovery Information and Compliance Requirements

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Vapor Recovery in Missouri

Vapor Recovery programs regulate the release of gasoline vapors from various activities into the atmosphere.  The Vapor Recovery Programs in Missouri are key components of the State Implementation Plans, or SIP, the department has with U.S. Environmental Protection Agency, or EPA, to address the St. Louis ozone nonattainment area and the maintenance plan for the Kansas City ozone maintenance area.

A nonattainment area is an area that has failed to attain the health-based National Ambient Air Quality Standards set by EPA for certain air pollutants, in this case ground-level ozone. In comparison, a maintenance area is an area that records air pollutant concentrations at levels at or near the health-based standard and the air quality must be maintained to ensure the area stays in attainment for the ozone standard. EPA requires the state to develop a maintenance plan for the area as well. This plan outlines what actions the area will take to stay in compliance with ground-level ozone standards. For more information regarding ozone, visit EPA's Ozone - Good Up High Bad Nearby webpage.

Vapor Recovery is also required at many stations outside of the Kansas City and St. Louis areas due to promulgation of federal Maximum Achievable Control Technology standards. See below for more information about these federal standards

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Kansas City Area - Stage I Vapor Recovery
Clay, Jackson and Platte counties
The Kansas City ozone maintenance area is regulated by Missouri Air Regulation 10 CSR 10-2.260, "Control of Petroleum Liquid - Storage, Loading, and Transfer.” Under this regulation, all gasoline storage tanks greater than 250 gallons in the Kansas City area are required to install MOPETP approved Pressure/Vacuum, or P/V, valves on all tank vents.  In addition, storage tanks greater than 2,000 gallons must be equipped with a vapor recovery system that demonstrates 90 percent efficiency.  Facilities must perform a leak decay test on all Stage I vapor recovery systems upon installation and again every five years in addition to testing of all P/V valves before installation and every two years thereafter.  See the Gasoline Dispensing Facilities webpage for more information regarding facility compliance.  

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St. Louis Area - Stage I and II Vapor Recovery
Franklin, Jefferson, St. Charles and St. Louis counties and the City of St. Louis
The St. Louis ozone non-attainment area is regulated by Missouri Air Regulation 10 CSR 10-5.220, "Control of Petroleum Liquid - Storage, Loading and Transfer." In addition to Stage I requirements, gasoline dispensing facilities in the St. Louis nonattainment area are required to install additional equipment to prevent the release of vapors into the atmosphere during vehicle refueling.  By using special nozzles, hoses, and other equipment, the vapors from the vehicle tank are transferred to and held in the underground storage tank until the delivery truck collects them.  All vapor recovery equipment must be MOPETP approved.

All facilities in the area are also subject to a permitting program.  For more information regarding facility compliance, visit the Gasoline Dispensing Facilities webpage.  

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Federal Regulations 40 CFR 63 Subparts BBBBBB (6B) and CCCCCC (6C)
These federal regulations are applicable to all Missouri terminals and bulk plants (6B) and to all gasoline dispensing facilities (6C).  The St. Louis area is currenlty in compliance due to the SIP required Vapor Recovery program.  While most Kansas City stations in compliance with the state regulation will be in compliance with this federal regulation, some may require additional controls.  The final compliance date for all sources was Jan. 10, 2011.

The State of Missouri has not adopted enforcement delegation for these regulations.  Therefore, please direct any questions regarding these regulations to EPA Region 7.  Basic information regarding 6B and 6C is located on EPA’s Area Source Standards website.

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