If the owner or operator of the proposed major stationary source or major modification does not fulfill the requirements of both subsections (a) and (b), the Agency shall deny the proposed construction.

a) The owner or operator shall reduce the impact of its emissions on air quality by obtaining sufficient emissions reductions to, at a minimum, compensate for its adverse ambient impact when the major stationary source or major modification would otherwise cause or contribute to a violation of a NAAQS; and

b) The owner or operator shall comply with the requirements of Section 203.1410(c) and (e), Section 203.1420, Section 203.1430, Section 203.1440(a), Section 203.1460, and Section 203.1500.

(Source: Added at 49 Ill. Reg. 6237, effective April 23, 2025)