Virginia Runoff Reduction Method Spreadsheets

Virginia's Runoff Reduction Method spreadsheets are the state's official compliance calculators: land cover in, BMP treatment train selected, phosphorus load reduction and runoff-volume credits out, per the state stormwater regulations. New development and redevelopment workbooks cover the two regulatory pathways.

They earn a listing as the archetype of a whole genre — regulator-published Excel calculators that define compliance arithmetic in many US states and beyond. If you work under a different authority, the pattern (and the pitfalls of versioned regulatory spreadsheets) transfers directly: always confirm you are on the current workbook before submitting.