Outer Continental Shelf Air Regulations Consistency Update for California

EPA is proposing to update a portion of the Outer Continental Shelf ("OCS") Air Regulations. Requirements applying to OCS sources located within 25 miles of States' seaward boundaries must be updated periodically to remain consistent with the requirements of the corresponding onshore area ("COA"), as mandated by section 328(a)(1) of the Clean Air Act, as amended in 1990 ("the Act"). The portion of the OCS air regulations that is being updated pertains to the requirements for OCS sources by the State of California and South Coast Air Quality Management District (South Coast AQMD). The intended effect of approving the OCS requirements for the State of California and South Coast AQMD is to regulate emissions from OCS sources in accordance with the requirements onshore. The change to the existing requirements discussed below is proposed to be incorporated by reference into the Code of Federal Regulations and is listed in the appendix to the OCS air regulations.