GAO: Gasoline blends hiking prices

The US proliferation of special gasoline blends is lowering emissions of air pollutants but raising fuel costs, says a study by the Government Accountability Office.Special gasoline blends are designed to reduce emissions of volatile organic compounds and nitrogen oxides and to meet requirements for oxygen content. The federal government requires them in areas troubled by ozone pollution. And some state and local governments have set their own specifications for special blends. GAO said it found 11 distinct special blends in use during the summer of 2004. With octane difference and other factors, “there were at least 45 different kinds of gasoline produced in the United States durin...

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