Pennsylvania County Wins EPA OK for RVP Plan

The move means Allegheny County fuel retailers can sell gasoline with an RVP of 9.0 psi all year.
July 08, 2019

WASHINGTON—The Environmental Protection Agency (EPA) said it has approved a plan by Allegheny County, Pennsylvania, to adjust the summertime (June 1 to September 15) Reid Vapor Pressure (RVP) requirement for gasoline sold in the county from 7.8 pounds per square inch (psi) to a less-restrictive 9.0 psi requirement. This means that retailers in the county can now sell gasoline with an RVP of 9.0 psi year-round, instead of having to adjust for the lower summertime RVP requirement.

As EPA notes in the rule, the more restrictive RVP requirement was originally imposed “to address nonattainment [with the national ozone standard] … in the Pittsburgh-Beaver Valley ozone nonattainment area.” However, Pennsylvania has since adopted other mechanisms to control ozone levels, so the lower RVP requirement is “no longer needed.” EPA acted in December 2018 to remove similar 7.8 psi RVP requirements that applied to the entire Pittsburgh-Beaver Valley Area. The final rule took effect July 5.

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