Amendment to existing Virginia regulations regarding the use of emergency power generators (EPGs) at certain military installations; 9VAC5-80-1111 of 9VAC5-80; 9VAC5-540-40 of 9VAC5-54
The Virginia Department of Environmental Quality (DEQ) recently approved amendments to the Emergency Power Generator (EPG) regulations that apply to certain military installations. The amendments will provide greater flexibility with respect to the operation of mission-critical EPGs at Department of Defense (DoD) facilities for non-emergency purposes, including up to 50 hours per year for planned outages, switch gear, and related electrical system testing.
The amendment should not have an impact on EPG permitting. Nonetheless, we suspect the amendment may interest EPG operators at DoD facilities in Virginia.
Implementation of the amendments is consistent with the U.S. Environmental Protection Agency’s National Emissions Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines pursuant to 40 CFR Part 63 Subpart ZZZZ and New Source Performance Standards pursuant to 40 CFR Part 60 Subparts IIII and JJJJ.
As noted in 9 VAC 5-80-1111, DoD facilities that desire to take advantage of the increased operational flexibility must first certify their EPGs per 9VAC5-20-230.
The amended regulation published in the Virginia Register on July 14, 2025. Additional details, including the revised regulation (track changes employed to highlight amendments), are available at: https://townhall.virginia.gov/l/ViewStage.cfm?StageID=10796
If you have a question pertaining to the amendments, please contact SCS Engineers.
