To amend the renewable fuel program under the Clean Air Act to account for small refinery exemptions in past calendar years, and for other purposes.

This bill revises requirements for exemptions given to small refineries of crude oil under the renewable fuel program, which requires transportation fuel to contain a minimum volume of renewable fuel. Specifically, the bill requires the Environmental Protection Agency (EPA) to determine the overall reduction in the national quantity of renewable fuel as a result of exemptions granted to small refineries in 2006-2018. The EPA must increase the renewable fuel standard (RFS) by adding such reductions to future year RFS obligations.