Approval and Promulgation of Implementation Plans; California; South Coast 1-Hour and 8-Hour Ozone

The Environmental Protection Agency (EPA) is approving the portions of a State implementation plan (SIP) revision submitted by the State of California on February 13, 2013 that relate to attainment of the 1-hour and 1997 8-hour ozone national ambient air quality standards in the Los Angeles-South Coast area. Specifically, the EPA is approving the portions of the South Coast Air Quality Management District's Final 2012 Air Quality Management Plan that update the approved control strategy for the 1997 8-hour ozone standard and that provide a demonstration of attainment of the 1-hour ozone standard by December 31, 2022. In approving this SIP revision, the EPA finds that an attainment date of December 31, 2022 is appropriate in light of the severity of the 1-hour ozone problem in the Los Angeles-South Coast area and the limited emissions remaining that can be regulated given the extent to which emissions sources in the South Coast have already been controlled. As part of this action, the EPA is approving new commitments adopted by the South Coast Air Quality Management District to develop, adopt, submit and implement certain near-term measures to achieve certain aggregate emission reduction targets, updated new technology provisions, and a new commitment by the California Air Resources Board to submit contingency measures in 2019 as necessary to meet the emission reduction targets for 2022 from implementation of new technology measures.