Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Revisions to Allegheny County Articles XX and XXI

摘要

EPA is taking direct final action to approve revisions to the Allegheny County portion of the Pennsylvania State Implementation Plan (SIP). EPA is approving a recodification of Allegheny County's air pollution control regulations, from Article XX to Article XXI. EPA is also approving revisions of Allegheny County's Article XXI regulations pertaining to general administrative provisions, emissions standards, emergency episode plans, test methods, and the permitting provisions for new and modified sources. At the same time, EPA is approving definitions associated with the Article XXI provisions. In addition, EPA is removing from the SIP outdated and outmoded Article XX provisions which are no longer codified in Article XXI. EPA is approving these revisions in accordance with the requirements of the Clean Air Act.