EPA slaps California with first-ever emission waiver rejection

The Environmental Protection Agency has rejected California 's attempt to set its own greenhouse gas emission levels for cars, light trucks and SUVs – the first time the federal agency has refused a waiver among more than 50 such requests. Since 2005, California has sought an EPA waiver to begin requiring the nation's first greenhouse gas emission standards for new vehicles sold in California . The law has been approved by 16 other states, and is one of several ways California is trying to reduce emissions to 1990 levels by the year 2020.