9 Va. Admin. Code § 25-800-20
§ 62.1-44.15 of the Code of Virginia; § 402 of the federal Clean Water Act.
Derived from Virginia Register Volume 27, Issue 26, eff. October 31, 2011; amended, Virginia Register Volume 30, Issue 4, eff. January 1, 2014; Volume 35, Issue 11, eff. March 1, 2019; Volume 39, Issue 4, eff. November 9, 2022; Volume 39, Issue 20, eff. March 1, 2024.