Determination of Attainment of the 2012 Annual Fine Particulate Matter Standard; Pennsylvania; Delaware County Nonattainment Area

概要

The Environmental Protection Agency (EPA) is making a final determination that the Delaware County, Pennsylvania moderate nonattainment area (the Delaware County Area) has attained the 2012 annual fine particulate matter (PM 2.5 ) national ambient air quality standard (NAAQS). This determination of attainment, also known as a clean data determination, is based upon quality assured, certified, and complete ambient air quality monitoring data showing that this area has monitored attainment of the 2012 annual PM 2.5 NAAQS based on the 2013-2015 data available in EPA's Air Quality System (AQS) database. As a result of this determination, the requirements for the Delaware County Area to submit an attainment demonstration, associated reasonably available control measures (RACM), a reasonable further progress (RFP) plan, contingency measures, and other planning state implementation plan (SIP) revisions related to attainment of the standard shall be suspended for so long as the area continues to meet the 2012 annual PM 2.5 NAAQS. This action is being taken under the Clean Air Act (CAA).