You are here: U.S.: overview of gasoline quality specifications in PADD 2 statesPart 3: State gasoline quality regulations in PADD 2 states3.C: Iowa
3.C: Iowa
Iowa has one conventional gasoline formulation. Fuel quality regulation is the responsibility of the state’s Department of Agriculture and Land Stewardship. The state’s fuel quality laws and regulations adopt ASTM D4814, Standard Specification for Automotive Spark-Ignition Engine Fuel as the state’s gasoline standard. They do not specify a version of the standard: the most recent and current one applies (presumably).
Additionally, the state’s laws and regulations feature the following:
    •Incorporation of current Environmental Protection Agency fuel waivers per 40 CFR Part 80, section meaning the 1-psi waiver (6.9 kPa) on summertime gasoline Reid Vapor Pressure applies to blends of conventional gasoline up to E15
    •Adoption of per-grade Anti-Knock Index minimum limits on regular and pr
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3.C: Iowa