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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 40. Existing Stationary Sources
12/22/2024

9VAC5-40-940. Standard for visible emissions.

A. The provisions of Article 1 (9VAC5-40-60 et seq.) of this part (Emission Standards for Visible Emissions and Fugitive Dust/Emissions, Rule 4-1) apply except that the provisions in subsection B of this section apply instead of 9VAC5-40-80 A.

B. No owner or other person shall cause or permit to be discharged into the atmosphere from any fuel burning equipment unit any visible emissions which exhibit greater than 20% opacity, except for one, six-minute period in any one hour of not more than 60% opacity. Failure to meet the requirements of this section because of the presence of water vapor shall not be a violation of this section.

Statutory Authority

§ 10.1-1308 of the Code of Virginia.

Historical Notes

Derived from VR120-04-0807, eff. January 1, 1985; amended, Virginia Register Volume 15, Issue 12, eff. April 1, 1999.

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