Washington State University

Media Filter Drain: Modified Design Evaluation

PIs: Cara PoorLiv Haselbach (WSU)
Dates: 03/01/2012 – 07/31/2014

The Washington State Department of Transportation (WSDOT) wishes to modify the media filter drain (MFD) design by changing the crushed gravel specification used in the mix. In order to gain approval from the Washington State Dept of Ecology (Ecology) and incorporate into their standard specifications, metal removal rates for the new design need to be compared to the old design based on accepted stormwater doses.

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