EPA is finalizing approval of revisions to the Washoe County Air District Board of Health (WCDBOH) portion of the Nevada State Implementation Plan (SIP). This action was proposed in the Federal Register on July 30, 2012 and concerns regulations regarding compliance with permit conditions, recordkeeping, source sampling and testing, and statements of compliance with 40 CFR Part 70 permits. We are approving local rules that regulate these emission sources under the Clean Air Act (CAA or the Act).