52.2346—Significant deterioration of air quality.
(a)
The Utah plan, as submitted, is approved as meeting the requirements of Part C, Title I, of the Clean Air Act, except that it does not apply to sources proposing to construct on Indian Reservations.
(b) Regulation for prevention of significant deterioration of air quality.
The provisions of § 52.21 except paragraph (a)(1) are hereby incorporated and made a part of the Utah State implementation plan and are applicable to proposed major stationary sources or major modifications to be located on Indian Reservations.
(c)
The State of Utah has clarified the generalized language contained in the Utah Air Conservation Regulations on the use of the “Guidelines on Air Quality Models.” In a letter to Douglas M. Skie, EPA, dated May 26, 1989, F. Burnell Cordner, Director of the Bureau of Air Quality, stated:
* * * The language in section 3.7 of the Utah Air Conservation Regulations on the use of “Guidelines on Air Quality Models” means that all PSD permit reviews will comply with the use of the “Guideline on Air Quality Models (Revised)”, EPA 450/2-78-027R, and any future supplements approved by EPA.