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In the News

Area stays in attainment of ozone standards for 2013

Wednesday, November 06, 2013

It appears the Austin-Round Rock metropolitan statistical area - Bastrop, Caldwell, Hays, Travis and Williamson counties - will remain in attainment with federal ozone standards for 2013, according to data collected through October at the Texas Commission on Environmental Quality's two regulatory monitors.

The U.S. Environmental Protection Agency determines violations of the ozone standard if the three-year average of any monitor's fourth-highest daily eight-hour ozone average is above 75 parts per billion.

The preliminary 2011-2013 average, or "design value," is 73 ppb for the monitor at the Austin Audubon Society and 72 ppb for the one at Murchison Middle School.

The EPA is currently considering whether to change the ozone standard in late 2014 or early 2015, likely in the range of 60-70 ppb.

> Explore CAPCOG's Air Quality Program

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