Virginia Administrative Code
Title 9 - ENVIRONMENT
Agency 5 - STATE AIR POLLUTION CONTROL BOARD
Chapter 50 - NEW AND MODIFIED STATIONARY SOURCES
Part II - Emission Standards
Article 4 - Standards of Performance for Stationary Sources (Rule 5-4)
Section 9VAC5-50-280 - Standard for major stationary sources (prevention of significant deterioration areas)

A. For major stationary sources located in prevention of significant deterioration areas, no owner or other person shall cause or permit to be discharged into the atmosphere from any affected facility any emissions in excess of that resultant from using best available control technology, as reflected in any condition that may be placed upon the permit approval for the facility.

B. A major stationary source shall apply best available control technology for each regulated NSR pollutant (as defined in 9VAC5-80-1615) that it would have the potential to emit in significant amounts.

C. A major modification shall apply best available control technology for each regulated NSR pollutant for which it would result in a significant net emissions increase at the source. This requirement applies to each proposed emissions unit at which a net emissions increase in the pollutant would occur as a result of physical change or change in the method of operation in the unit.

D. For phased construction projects, the determination of best available control technology shall be reviewed, and modified as appropriate, at the latest reasonable time which occurs no later than 18 months prior to commencement of construction of each independent phase of the project. At such time, the owner of the applicable stationary source may be required to demonstrate the adequacy of any previous determination of best available control technology for the source.