The Environmental Protection Agency said it likely will raise the amount of ethanol that can be blended with ordinary gasoline from 10% to 15%. The move is in response to concerns from a group of ethanol manufacturers that the existing ethanol market will not be big enough to absorb output. The EPA, however, said it will decide after reviewing the results of testing by the Energy Department to determine the model years of cars that can use fuel with a higher ethanol content.

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