You are here: U.S.: overview of gasoline quality specifications in PADD 2 statesPart 3: State gasoline quality regulations in PADD 2 states3.E: Kentucky
3.E: Kentucky
Kentucky has one conventional gasoline formulation. Additionally, the state adopts, on an “opt-in” basis, federal reformulated gasoline (RFG) in the Louisville metro area, defined as Jefferson County and parts of Bullitt and Oldham counties. The Department of Agriculture regulates fuel quality in the state, with the federal Environmental Protection Agency (EPA) taking care of enforcement in RFG areas.
The state’s fuel quality regulations adopt the most recent version of ASTM D4814 Standard Specification for Automotive Spark-Ignition Engine Fuel. Kentucky regulations make a handful of modifications to ASTM D4814 provisions, however:
    •Waives the minimum temperature limit at which vapor/liquid ratio equals 20 (T@V/L=20) for gasoline-ethanol blends up to E15
    •Moves the beginning of
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3.E: Kentucky