The Obama administration is conducting the last step in its review of proposed annual ethanol blending mandates for three separate years.
The Environmental Protection Agency (EPA) sent the proposal, which has not been revealed publicly, to the White House Office of Management and Budget, Reuters reported, citing industry sources.
The proposal would cover ethanol and biodiesel blending requirements for fuel refiners for 2014, 2015 and 2016 under the renewable fuel standard.
The EPA agreed in court last month to propose the levels for 2014 and 2015 by June and to release the final mandates by November. The 2014 level should have been out in November 2013, and the 2015 one a year later.
White House review is the final step before the EPA can release the proposals publicly and gather comments from the public on them.
The declined to comment on the Tuesday report.