Air Plan Revisions; California; Sacramento Metropolitan Air Quality Management District

The Environmental Protection Agency (EPA) is taking final action to approve State implementation plan (SIP) revisions from the Sacramento Metropolitan Air Quality Management District (SMAQMD or "District") to address Clean Air Act (CAA or "Act") requirements related to the 2008 8-hour ozone national ambient air quality standards (NAAQS or "standards"). These revisions concern emissions of oxides of nitrogen (NO<INF>X</INF>) from boilers, gas turbines, and miscellaneous ("misc") combustion units as well as reasonably available control technology (RACT) requirements for major sources of NO<INF>X</INF> in the portion of the Sacramento Metro, CA, nonattainment area that is subject to SMAQMD jurisdiction.