The purpose of this regulation is to implement a program for the prevention of

The purpose of this regulation is to implement a program for the prevention of significant deterioration of air quality as required by 40 CFR 51.166. This regulation supercedes and replaces the previous adoption by reference of 40 CFR 52.21 and 40 CFR 51.166. 40 CFR 52.21 and 51.166 as used in this regulation refer to the federal regulations as amended and promulgated by February 17, 2016, except as provided in Rule 5.2 below. CFR refers to the “Code of Federal Regulations”.