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9VAC25-120-20. Purpose.

This general permit regulation governs the discharge of wastewaters from sites contaminated by petroleum products, chlorinated hydrocarbon solvents, the hydrostatic testing of natural gas storage tanks and pipelines, the hydrostatic testing and dewatering of petroleum storage tank systems and associated distribution equipment, and the hydrostatic testing of water storage tanks and pipelines. These wastewaters may be discharged from the following activities: excavation dewatering, conducting aquifer tests to characterize site conditions, pumping contaminated groundwater to remove free product, discharges resulting from another petroleum product or chlorinated hydrocarbon solvent cleanup activity approved by the board, hydrostatic tests of natural gas and petroleum storage tanks or pipelines, hydrostatic tests and dewatering of storage tanks and associated distribution equipment, and hydrostatic tests of water storage tank systems or pipelines. Discharges not associated with petroleum-contaminated water, water contaminated by chlorinated hydrocarbon solvents, or hydrostatic tests are not covered under this general permit.

Statutory Authority

62.1-44.15 of the Code of Virginia; 402 of the Clean Water Act; 40 CFR Parts 122, 123, and 124.

Historical Notes

Derived from VR680-14-11 2, eff. February 24, 1993; amended, Virginia Register Volume 14, Issue 9, eff. February 24, 1998; Volume 19, Issue 10, eff. February 26, 2003; Volume 24, Issue 9, eff. February 6, 2008; Volume 29, Issue 4, eff. February 26, 2013; Volume 34, Issue 10, eff. February 26, 2018.

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