Arlington County, VA Environmental Rules: Stormwater Management (2026)

The Arlington County Board established its own VESMP under Va. 15:27, per § 60-4, designating the Director of the Department of Environmental Services as Administrator responsible for the program's Stormwater Manual and standards. to the entire land-disturbing activity, treating individual lots in a common plan of development as one project rather than separate ones. A complete plan identifies every discharge point and receiving water or karst feature, the pre- and post-development drainage areas, the proposed facility type, location and acreage treated, hydrologic and hydraulic computations, and site maps showing drainage, soils, floodplains, utilities, and proposed grading.

Where the water-quality or quantity requirements of 9VAC25-875-580 or -600 are met through off-site compliance instead of an on-site facility, § 60-11(D) requires a letter of availability from the off-site provider, and the credited nutrient reductions must be achieved before the applicant's own work begins and must sit inside Arlington's MS4 service area so the Chesapeake Bay TMDL obligations in the County's MS4 Permit are actually met locally. 1 of the Code of Virginia, and once a permanent facility is built, § 60-11(F) requires a sealed construction record drawing certifying it was built as approved.

A recorded maintenance instrument that runs with the land must be in place under § 60-15 before the plan is approved, and the Administrator keeps a right of entry under § 60-17 to inspect the facility going forward.