The Environmental Protection Agency (EPA) is finalizing approval of revisions to the Clark County Department of Air Quality (Clark or DEQ) portion of the Nevada State Implementation Plan (SIP). This action was proposed in the Federal Register on July 23, 2014, and concerns seven Clark County permitting related rules submitted by Nevada Division of Environmental Protection (NDEP). Final approval of these rules makes these rules federally enforceable and corrects program deficiencies identified in previous EPA rulemaking.