Oct 8, 2012 2:52 PM by The Associated Press
SAN FRANCISCO (AP) - State air pollution regulators say they do not expect California's air quality to worsen appreciably after the governor ordered the release of a dirtier blend of gasoline to help slash record-high pump prices.
The California Air Resources Board on Monday said the last time the state made an early shift to so-called "winter-blend" gasoline was in 2005, in response to supply disruptions caused by Hurricane Katrina.
AAA said the average price for a gallon of regular hit $4.668 Monday in California - the highest price in the nation.
Officials said it could take days before prices fall, depending on how quickly refineries can get the winter-blend fuel to market.
California usually converts to the gas on Oct. 31. The fuel evaporates in heat more quickly than summer-blends.
A fuel's evaporation rate indicates how much raw fuel enters the environment, especially in warm weather.
(Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)
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