Measuring Pollutant Removal Efficiencies of Stormwater Treatment Units
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2005-09-01
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TRIS Online Accession Number:01010915
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Edition:Final Report
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Abstract:This study evaluated the bacteria removal efficiency, and bacteria distribution and survivability within a structural BMP called Vortechs System (manufactured by Stormwater 360, formerly Vortechnics, Inc.) installed at two different sites in Providence, Rhode Island. Twelve rain events with precipitations greater than 0.1 inch were sampled over a two year period. Five pathogenic indicator bacteria, E. coli, Enterococci, Fecal Streptococci, Total Coliform, Fecal Coliform, were analyzed. Based on our research results, maintenance strategies such as more frequent sediment removal may be necessary to prevent pathogen-rich washouts to receiving waters. Structural BMPs near busy streets and highway should be cleaned out more frequently.
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