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Area Designations for 1997 Fine Particle (PM_2.5) Standards

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Region 3: State Designations
Pennsylvania PM_2.5 Designations Map

Pennsylvania PM_2.5 Designations Map

The map shows that Mercer County is within the Youngstown-Warren-Sharon, OH-PA nonattainment area. Beaver, Butler, Washington, and Westmoreland Counties, as well as parts of Allegheny, Armstrong, Greene, and Lawrence Counties, comprise the Pittsburgh-Beaver Valley, PA nonattainment area. The Liberty-Clairton nonattainment area lies entirely in part of Allegheny County. Cambria County, as well as parts of Indiana County, comprise the Johnstown nonattainment area. Cumberland, Dauphin, and Lebanon Counties comprise the Harrisburg-Lebanon-Carlisle nonattainment area. York County comprises the York nonattainment area. Lancaster County comprises the Lancaster nonattainment area. Berks County comprises the Reading nonattainment area. Bucks, Chester, Delaware, Montgomery, and Philadelphia Counties are within the Philadelphia-Wilmington, PA-NJ-DE nonattainment area. The remainder of the state has not been designated nonattainment.

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