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The Environmental Protection Agency doesn't expect next year's increase of ethanol put into gasoline to have any environmental benefit, but it could end up costing as much as $600 million per year.

The EPA estimates the Renewable Fuel Standard, or the amount of biofuel required to be added to the nation's gasoline supply, to have zero dollars in benefits, according to the agency's Fall 2015 Statement of Regulatory Priorities. However, the new rule, set to be announced by Nov. 30, could cost between $118 million and $595 million, according to the document.

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