Ariz. Admin. Code § 18-2-409

Current through Register Vol. 30, No. 50, December 13, 2024

Section R18-2-409 - Air Quality Models

A. Where the Director requires a person requesting a permit or permit revision under this Article to perform air quality impact modeling to obtain such permit or permit revision under this Article, the modeling shall be performed in a manner consistent with the Guideline specified in R18-2-406(A)(6)(a).

B. Where the person requesting a permit or permit revision under this Article can demonstrate that an air quality impact model specified in the Guideline is inappropriate, the model may be modified or another model substituted. However, before such modification or substitution can occur, the Director shall make a written finding that:

1. No model in the Guideline is appropriate for a particular permit or permit revision under this Article under consideration, or

2. The data base required for the appropriate model in the Guideline is not available, and

3. The model proposed as a substitute or modification is likely to produce results equal or superior to those obtained by models in the Guideline, and

4. The model proposed as a substitute or modification has been approved by the Administrator.

C. The substitution or modification of an air quality model under this Section shall be included in the public notice under R18-2-330(C).

Ariz. Admin. Code § R18-2-409

Adopted effective May 14, 1979 (Supp. 79-1). Former Section R9-3-409 renumbered without change as Section R18-2-409 (Supp. 87-3). Section R18-2-409 renumbered to R18-2-609, new Section R18-2-409 adopted effective November 15, 1993 (Supp. 93-4).