Approval and Promulgation of Implementation Plans; Washington: Additional Regulations for the Benton Clean Air Agency Jurisdiction

The Environmental Protection Agency (EPA) is approving revisions to the Washington State Implementation Plan (SIP) that were submitted by the Department of Ecology (Ecology) in coordination with Benton Clean Air Agency (BCAA) on August 25, 2015. In the fall of 2014 and spring of 2015, the EPA approved numerous revisions to Ecology's general air quality regulations. However, our approval of the updated Ecology regulations applied only to geographic areas where Ecology, and not a local air authority, has jurisdiction, and statewide to source categories over which Ecology has sole jurisdiction. This final approval allows BCAA to rely primarily on Ecology's general air quality regulations for sources within BCAA's jurisdiction, including implementation of the minor new source review and nonattainment new source review permitting programs. This final action also approves of a small set of BCAA regulatory provisions that replace or supplement parts of Ecology's general air quality regulations.