By Scott Irwin Since last June, the U.S. Environmental Protection Agency (EPA) has released a series of decisions regarding implementation of the U.S. Renewable Fuel Standard (RFS) for 2026-2027. We analyzed the impact of these decisions on biomass-based diesel production and feedstock use in a series of farmdoc daily articles (October 29, 2025; November 5, 2025; November 12, 2025).