§ 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.
(d) On March 14, 2012 the State of Utah submitted revisions to the State Implementation Plan that incorporated the required elements of the 2008 PM2.5 NSR Implementation Rule and the 2010 PM2.5 Increment Rule. The following provisions are approved into the State Implementation Plan.
(1) Major source baseline date means:
(i) In the case of PM10 and sulfur dioxide, January 6, 1975;
(ii) In the case of nitrogen dioxide, February 8, 1988; and
(iii) In the case of PM2.5, October 20, 2010.
(2) Minor source baseline date means the earliest date after the trigger date on which a major stationary source or a major modification subject to 40 CFR 52.21 or to regulations approved pursuant to 40 CFR 51.166 submits a complete application under the relevant regulations. The trigger date is: