Approval and Promulgation of Implementation Plans, State of California, San Joaquin Valley Unified Air Pollution Control District, New Source Review

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EPA is proposing to approve revisions to the San Joaquin Valley Air Pollution Control District portion of the California State Implementation Plan (SIP) submitted by the California Air Resources Board. These revisions concern pre-construction review of new and modified stationary sources ("new source review" or NSR) within the District. The revisions are intended to remedy deficiencies we identified when granting limited approval and limited disapproval to the rules in 2010, and to add NSR requirements for new major sources of fine particulate matter (PM 2.5 ) and major modifications at existing major PM 2.5 sources as required by the Clean Air Act. We are taking comments on this proposal and plan to follow with a final action.