Virginia Administrative Code
Title 9 - ENVIRONMENT
Agency 5 - STATE AIR POLLUTION CONTROL BOARD
Chapter 80 - PERMITS FOR STATIONARY SOURCES
Part II - Emission Standards
Article 8 - Permits for Major Stationary Sources and Major Modifications Locating in Prevention of Significant Deterioration Areas
Section 9VAC5-80-1725 - Air quality models
Current through Register Vol. 41, No. 3, September 23, 2024
A. All applications of air quality modeling involved in this article shall be based on the applicable air quality models, data bases, and other requirements specified in Appendix W to 40 CFR Part 51.
B. Where an air quality impact model specified in Appendix W to 40 CFR Part 51 is inappropriate, the model may be modified or another model substituted. Such a modification or substitution of a model may be made on a case-by-case basis, or, where appropriate, on a generic basis for a specific state program. Written approval of the administrator shall be obtained for any modification or substitution. In addition, use of a modified or substituted model shall be subject to notice and opportunity for public comment under procedures developed in accordance with 9VAC5-80-1775.
Statutory Authority
§ 10.1-1308 of the Code of Virginia; Clean Air Act (§§ 110, 112, 165, 173, 182 and Title V); 40 CFR Parts 51, 61, 63, 70 and 72.
