Sec. 231-10.2. Determinations of ERCs

Any decrease in emissions of a regulated NSR contaminant, in tpy, which:

(a) is surplus, quantifiable, permanent, and enforceable; and

(b) will result or resulted from a physical change in, or a change in the method of operation of an emission source subject to Part 201 of this Title:

(1) is quantified as the difference between baseline actual emissions and the subsequent potential to emit; and

(2) is approved in accordance with the provisions of this Part; or

(c) will result or resulted from a physical change in, or a change in the method of operation of an emission source not subject to Part 201 of this Title, and is approved in accordance with the provisions of section 231-10.7 of this Subpart.