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Title: FIELD STUDY OF STORMWATER TREATMENT SYSTEMS AND CATCH BASIN INSERTS FOR THE REMOVAL OF POLLUTANTS FROM URBAN RUNNOFF

Author: K. Kostarelos, E. Khan, N. Callipo, J. Velasquez and D. Graves

Year: 2009

Publisher: European Water Resources Association (EWRA)

Description:

Non-point source (NPS) pollution, unlike point source pollution from domestic and industrial and wastewater treatment plants, comes from many diffuse sources. It is caused by the movement of rainfall or snowmelt that picks up and carries pollutants to receiving waters. NPS pollution represents the main cause of the contamination of many rivers, streams and other water bodies in the United States. Best management practices (BMPs), e.g., oil and grit separators, grassed swales, vegetated filter strips, retention ponds, catch basin inserts, are intended to reduce NPS pollutants including those from highway runoff. A catch basin insert
(CBIs) is a device that reduces stormwater pollution from the runoff, without requiring any land use. It is attached to the entrance of or mounted inside of a catch basin. Our studies focused on two major BMPs—CBIs and inlet treatment systems. Six commercially-available CBIs and two water quality inlet treatment systems were tested at field sites of New York State Department of Transportation. The CBI study focused on the installation characteristics, durability and maintenance of the catch basin inserts, as well as whether the inserts can be conveniently, safely, and economically installed and maintained. Six commercially–available devices were installed along highways in Westchester, New York and were monitored. The CBIs were the Ultra-Urban Filter, Passive Skimmer, Stream Guard, FloGard Filter, Hydro-Kleen Filtration System, Silt Sack. The pollutant removal efficiencies at two existing water quality inlet treatment systems were also measured.