Clean Air Plans; 2008 8-Hour Ozone Nonattainment Area Requirements; West Mojave Desert, California
The Environmental Protection Agency (EPA) is taking final action to approve portions of state implementation plan (SIP) revisions submitted by the State of California to meet Clean Air Act (CAA or "Act") requirements for the 2008 8-hour ozone national ambient air quality standards (NAAQS or "standards") in the Los Angeles-San Bernardino Counties (West Mojave Desert), California ozone nonattainment area ("West Mojave Desert" or WMD). The SIP revisions address the "Severe-15" nonattainment area requirements for the 2008 ozone NAAQS, including the requirements for emissions inventories, attainment demonstration, reasonable further progress, reasonably available control measures, and contingency measures, among others; and establishes motor vehicle emissions budgets. The EPA is approving the SIP revisions as meeting all the applicable ozone nonattainment area requirements, except for the contingency measures requirement, for which the EPA is deferring action.