West Pinal County in nonattainment for 1987 dust standard, EPA says

SAN FRANCISCO— The U.S. Environmental Protection Agency declared a portion of western Pinal County, Ariz. to be in nonattainment for the 1987 federal PM10 coarse particulate matter standard. Today’s redesignation is based on EPA’s October 2010 proposal and recent air quality monitoring data for PM10. Based on comments in response to the 2010 proposal, EPA reduced the size of the nonattainment area, relative to its proposed nonattainment area, by about 36 percent View full post on U.S. EPA Air News

Tagged as: 'Dust, 1987, County, Nonattainment, Pinal, says, standard, west