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On April 1, 2010, the U.S. Environmental Protection Agency and Department of Transportation finalized a new joint regulation for greenhouse gas (GHG) emissions and fuel economy for model year 2012-16 light duty vehicles.
On February 3, 2010, the EPA finalized revisions to the National Renewable Fuel Standard. The new rule (RFS2) incorporates changes mandated by the 2007 Energy Independence and Security Act (EISA), and is a major amendment of the original standard.