Code of Federal Regulations Title 40. Protection of Environment § 40.52.181 Significant deterioration of air quality

(1) April 23, 1981—submittal of the PSD Supplement Arkansas Plan of Implementation for Pollution Control (the “PSD Supplement”) submitted April 23, 1981 (as adopted by the Arkansas Commission on Pollution Control and Ecology (ACPCE) on April 10, 1981);

(2) June 3, 1988—submittal of revisions to the PSD Supplement (revised and adopted by the ACPCE on March 25, 1988);

(3) June 19, 1990—submittal of revisions to the PSD Supplement (revised and adopted by the ACPCE on May 25, 1990), and;

(4) March 5, 1999—submittal of Regulation 19, Chapter 9, Prevention of Significant Deterioration which recodified Arkansas' PSD regulations (as adopted by the Arkansas Pollution Control and Ecology Commission on January 22, 1999).

(5) November 6, 2012—submittal of Regulation 19, Chapter 9, Prevention of Significant Deterioration which provided the authority to regulate greenhouse gas emissions in the Arkansas PSD program.

(6) January 7, 2014—submittal of Regulation 19, Chapter 9, Prevention of Significant Deterioration which updated the Arkansas PSD program to provide for the issuance of greenhouse gas plantwide applicability limit permits.

(7) December 1, 2014—submittal of Regulation 19, Chapter 9, Prevention of Significant Deterioration which provided the authority to regulate and permit emissions of PM_2.5 and its precursors.