- A. No owner or other person shall cause or permit the emission of visible air pollutants from gasoline and other nondiesel fuel-powered motor vehicles for longer than five consecutive seconds after the engine has been brought up to operating temperature.
- B. No owner or other person shall cause or permit the emission of visible air pollutants from diesel-powered motor vehicles of a density equal to or greater than 20% opacity for longer than 10 consecutive seconds after the engine has been brought up to operating temperature.
- C. Compliance with opacity standards in this part shall be determined by conducting observations in accordance with Reference Method 9 or any alternative method. Opacity readings of portions of plumes that contain condensed, uncombined water vapor shall not be used for purposes of determining compliance with opacity standards.
Statutory Authority
§ 46.2-1180 of the Code of Virginia.
Historical Notes
Derived from Virginia Register Volume 13, Issue 5, eff. January 24, 1997; amended, Virginia Register Volume 18, Issue 20, eff. October 1, 2002.