Approval and Promulgation of Implementation Plans; Commonwealth of the Northern Mariana Islands; Prevention of Significant Deterioration; Special Exemptions From Requirements of the Clean Air Act

요약

Under the Clean Air Act, EPA is proposing to disapprove the state implementation plan (SIP) for the Commonwealth of the Northern Mariana Islands (CNMI) with respect to prevention of significant deterioration (PSD), and to incorporate by reference the Federal PSD regulations into the applicable CNMI plan. EPA is also proposing to approve a petition by CNMI for an exemption of the applicable PSD major source baseline date and trigger date under Federal PSD regulations, and to establish an alternate date, January 13, 1997, as the major source baseline date and trigger date in CNMI. EPA is also proposing to make certain corrections that were made in previous rulemakings. This action would establish the Federal PSD regulations as a basic element of the CNMI implementation plan and, through the exemption, would establish January 13, 1997 as the major source baseline date (and trigger date) under the PSD program in CNMI for sulfur dioxide, PM 10 and nitrogen dioxide.