Outer Continental Shelf Air Regulations Consistency Update for Alaska

EPA is updating the Outer Continental Shelf ("OCS") Air Regulations as they apply to OCS sources off the coast of Alaska. 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 for which the State of Alaska is the designated COA. The intended effect of incorporating the State of Alaska requirements applicable to OCS sources in effect as of July 2, 2000, is to regulate emissions from OCS sources in accordance with the requirements onshore.