Regulation of Fuels and Fuel Additives: RFS Pathways II, and Technical Amendments to the RFS Standards and E15 Misfueling Mitigation Requirements

In this final rulemaking, the Environmental Protection Agency (EPA) is amending three separate sets of regulations relating to fuels. In amendments to the renewable fuels standard (RFS) program regulations, EPA is clarifying the number of cellulosic biofuel renewable identification numbers that may be generated for fuel made with feedstocks of varying cellulosic content, is specifying new and amended pathways for the production of renewable fuels made from biogas, and is clarifying or amending a number of RFS program regulations that define terms or address registration, recordkeeping, and reporting requirements. EPA is also making various changes to the misfueling mitigation regulations for gasoline that contains greater than 10 volume percent ethanol and no more than 15 volume percent ethanol (E15) and to the survey requirements associated with the ultra- low sulfur diesel program.