Lawmakers are calling on Environmental Protection Agency chief Gina McCarthy to reduce the amount of ethanol that oil refiners must blend into gasoline next year, reports The Hill.

Signed by 169 House members, a letter sent to McCarthy on Oct. 31 urged the EPA to lower the renewable fuel standard (RFS), arguing the current mandate is unrealistic, reports Laura Barron-Lopez of The Hill.

According to a leaked draft of the 2014 standards, the EPA plans to scale back the mandate for ethanol by roughly 3 billion gallons, notes  The Hill. The Office of Management and Budget is reviewing the EPA proposal.

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