Arlington County

Stormwater Manual: A Guide to Stormwater Requirements for Land Disturbing Activities in Arlington County

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Compare each cited field to the official PDF before relying on it. What this means

County LDA guidance manual; numeric WQv depths primarily via VRRM/Handbook rather than restated inline. Pipeline excerpt repair removed 4 unlocated citation(s).

Fields not found in document: design_criteria.design_storm_return_periods_years, document_metadata.state_code, document_metadata.version_or_edition, document_metadata.adoption_or_effective_date, document_metadata.last_revised_date

Other manuals in Virginia: City of Alexandria, City of Charlottesville, City of Chesapeake, City of Norfolk, City of Richmond, City of Roanoke, Fairfax County, Virginia Department of Environmental Quality (DEQ), Virginia Department of Transportation (VDOT)

Document Metadata

Jurisdiction level

County

“Arlington County”
Cover

State

Not found in document

No evidence cited

Version / edition

Not found in document

No evidence cited

Adoption / effective date

Not found in document

No evidence cited

Last revised date

Not found in document

No evidence cited

Relationship to state manual

deemed equivalent to state manual

“Updated for consistency with new VADEQ Stormwater”
Highlights / §2.2.4

Design Criteria

Design storm return periods (years)

Not found in document

No evidence cited

Water quality volume method

Water quality technical criteria aligned with VADEQ Stormwater Management Handbook / Virginia Runoff Reduction Method (VRRM) and Virginia BMP Clearinghouse. County clarifications for BMPs, underdrains, setbacks, waterproofing, and soil/infiltration testing. Energy-balance detention used for water quantity / flood control where applicable.

“Water Quality Technical Criteria ... VRRM”
§2.2.4

Peak flow calculation method(s)

Virginia Runoff Reduction Method (VRRM), Energy balance detention / water quantity worksheet, Virginia Stormwater BMP Clearinghouse design specs

“energy balance detention for flood control”
Water quantity

Hydrologic/hydraulic software

VRRM spreadsheet

“Modified VRRM spreadsheet”
TOC

Approved BMP categories

Virginia BMP Clearinghouse SCMs, Sheetflow to vegetated filter strip / conserved open space, Detention tanks / energy-balance facilities, Stormwater planters / urban BMPs

“Virginia Stormwater BMP Clearinghouse”
Facility Design Considerations