EPA Approves Emergency Fuel Waiver For Tennessee

As a result of the fire that shut down Valero Energy’s Memphis, TN refinery, the U.S. Environmental Protection Agency (EPA) has exercised its authority under the Clean Air Act to temporarily waive certain federal clean gasoline requirements for parts of Tennessee. This waiver will allow greater flexibility for the fuel distribution system to support an adequate supply.

This waiver was granted by EPA in coordination with the Department of Energy (DOE), at the request of Tennessee Governor Bill Haslam. EPA Administrator Lisa P. Jackson determined that extreme and unusual supply circumstances exist, which are likely to result in a shortage of gasoline compliant with federal regulations. The federal waiver will help ensure an adequate supply of gasoline in the affected area until normal supply to the region can be restored.

The waiver applies to 7.8 psi low RVP* requirements that apply in the Shelby County, TN portion of the Memphis metro area. The waiver is effective for twenty days and allows the sale of 9.0 psi conventional gasoline in the Shelby county low RVP covered area. As required by law, EPA and DOE evaluated the situation and determined that granting a short-term waiver was consistent with the public interest. To mitigate any impacts on air quality the Clean Air Act provides strict criteria for when fuels waivers may be granted, and requires that waivers be limited as much as possible in terms of their geographic scope and duration.

* Reid Vapor Pressure (RVP) is a common measure of the volatility of gasoline. It is defined as the absolute vapor pressure exerted by a liquid at 100 °F (37.8 °C) as determined by the test method ASTM-D-323. The test method applies to volatile crude oil and volatile nonviscous petroleum liquids, except liquified petroleum gases.

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