ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: STORMWATER SOURCE ...

Verification testing of the Hydro International Downstream Defender® was conducted at the Madison Water Utility in Madison, Wisconsin.

The system was designed for a drainage basin estimated at 1.9 acres in size, but during intense storm events, the system received water from an area up to approximately four acres.

The Downstream Defender® is a hydrodynamic vortex separator designed to remove settleable solids and associated pollutants from stormwater runoff.

The verification challenge included collecting influent and treated effluent samples during 20...