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As reported in our June 18, 2025, blog item, the U.S. Environmental Protection Agency (EPA) proposed in June 2025 the applicable volumes and percentage standards for 2026 and 2027 for cellulosic biofuel, biomass-based diesel (BBD), advanced biofuel, and total renewable fuel. On September 18, 2025, EPA issued a supplemental notice of proposed rulemaking (SNPRM) that revises the proposed Renewable Fuel Standard (RFS) “Set 2” renewable volume obligations (RVO) for 2026 and 2027 to account for...

By Lynn L. Bergeson   On May 5, 2021, the U.S. Environmental Protection Agency (EPA) published a notice of disclosure to all obligated parties under the Renewable Fuel Standard (RFS) program that have submitted small refinery exemption (SRE) petitions and to all parties whose RFS information otherwise resides in EPA’s Moderated Transaction System (EMTS).  EPA’s action is in response to a U.S. Government of Accountability Office (GAO) request to disclose such...

By Lynn L. Bergeson and Ligia Duarte Botelho, M.A. On January 13, 2020, U.S. Representative Cindy Axne announced that the Government Accountability Office (GAO) has responded to a bipartisan letter submitted by members of the House Biofuels Caucus (HBC) requesting an investigation into misuse of small refinery exemptions (SREs) by the U.S. Environmental Protection Agency (EPA). Submitted in August 2019, the bipartisan letter requested that GAO examine EPA’s review and approval of SRE...