EPA Declines To Set Specific Values For Biofuels’ Lifecycle GHG Emissions

After years of studying the lifecycle greenhouse gas emissions of various biofuels, and soliciting input from many stakeholders, EPA has decided not to select definitive, specific emissions values for various biofuel types, a senior agency air official says, potentially leaving ambiguity over the contested topic. Speaking at a May 11 meeting of EPA air advisers in Ann Arbor, MI, Sarah Dunham, head of EPA’s Office of Transportation and Air Quality, unveiled a “teaser” of EPA’s current thinking on the issue...