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The Cross-State Air Pollution Rule (CSAPR) as published in the Federal Register on August 8, 2011 (76 FR 48208), and subsequently amended on June 12, 2012 (77 FR 34830), December 3, 2014 (79 FR 71663), and October 26, 2016 (81 FR 74504), requires fossil fuel-fired electric generating units at coal-, gas-, and oil-fired facilities in 27 states in the eastern half of the U.S. to reduce emissions to help downwind areas attain fine particle and/or ozone National Ambient Air Quality Standards.
On August 25, 2017, the Department added Regulation 61-62.97, Cross-State Air Pollution Rule (CSAPR) Trading Program, to incorporate the EPA’s CSAPR trading program for South Carolina in 40 CFR Part 97 for annual levels of nitrogen oxides (NOX) and sulfur dioxide (SO2), to address mandatory transport and regional haze SIP infrastructure elements.