8 CAR § 42-205. Emissions subject to permitting

(a) All regulated air pollutant emissions and recognized air contaminant emissions from a part 70 source shall be included in a part 70 permit, except that GHG emissions less than one hundred thousand (100,000) tpy CO2e shall not be included in a part 70 permit unless the part 70 source undertakes a physical change or change in the method of operation that will result in an emissions increase of seventy-five thousand (75,000) tpy CO2e or more. (b) Only regulated air pollutants may trigger the need for a part 70 permit or a part 70 permit modification process. (c)(1) A permit modification involving only air contaminants other than regulated air pollutants shall be permitted according to the procedure of 8 CAR pt. 41. (2) Such permits shall be incorporated into the part 70 permit by administrative permit amendment.