EPA is not expected to meet the statutory Nov. 30 deadline this year, and supplemental rulemaking to address gallons waived through Small Refinery Exemptions is said to be the holdup.

Biofuel groups say a Trump administration plan to account for gallons of renewable fuel waived through small refinery exemptions is unsatisfactory and goes back on commitments offered earlier this month.

Ethanol producers are hopeful for an increase in year-round E15 gasoline sales after the Trump administration okayed its summertime sale, but consumer demand will likely be modest due to fears of litigation, a lack of blender pumps, and challenges posed by some state regulations.

Key staffers are moving on up and around Capitol Hill.

Biofuel advocates blasted the Environmental Protection Agency's latest proposal to set targets for production of renewable fuels under the Renewable Fuel Standard because the agency did not try to reallocate renewable gallons left unblended when refineries were granted waivers from RFS requirements.