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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 50. New and Modified Stationary Sources
11/13/2026

9VAC5-50-630. Standard for engine-generator set emissions.

A. For a data center permit issued by the department, including coverage under any general permit, the department shall not issue such permit unless the emission limit for each gen-set established by such permit is equal to or less than the emissions achieved by a Tier 4 equivalent gen-set.

B. Nothing in this section shall be construed to prevent the department from (i) determining the Best Available Control Technology, Lowest Achievable Emission Rate, Reasonably Available Control Technology, any New Source Performance Standard, or any National Emission Standards for Hazardous Air Pollutants or (ii) establishing in a permit issued by the department pursuant to this chapter more stringent emission limits than those achieved by a Tier 4 equivalent gen-set.

Statutory Authority

§§ 10.1-1308 and 10.1-1322.6 of the Code of Virginia.

Historical Notes

Derived from Virginia Register Volume 43, Issue 4, eff. November 4, 2026.

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