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Air Quality

Cross-State Air Pollution Rule (CSAPR)

On August 21, 2012, the U.S Court of Appeals for the DC Circuit issued a ruling vacating the U.S. Environmental Protection Agency's (EPA) Cross State Air Pollution Rule (CSAPR). On June 24, 2013, the U.S. Supreme Court granted the EPA's petition asking the court to review the DC Circuit court's decision. For updates on this case, see EPA's CSAPR webpage.

On July 6, 2011, the EPA issued CSAPR to comply with the July 11, 2008, vacatur and the December 23, 2008, Court of Appeals remand of CAIR.

For General Questions:

Maeve Mason, Regulation and SIP Management Section

Phone:  (803) 898-2230


For more information please contact the Bureau of Air Quality at (803) 898-4123 or by email.