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Estimating Nonpoint Pollution from Small Urban Watersheds
Vladimir Novotny, Hung-Ming Sung, Roger Bannerman and Ken Baum
Journal (Water Pollution Control Federation)
Vol. 57, No. 4 (Apr., 1985), pp. 339-348
Published by: Water Environment Federation
Stable URL: http://www.jstor.org/stable/25042596
Page Count: 10
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Eight small experimental watersheds in Milwaukee County, Wisconsin were extensively monitored as a part of the National Urban Runoff Project (NURP). To ascertain the effect of street sweeping on pollutant loadings in the runoff, the watersheds were paired, with members in each pair swept with different frequencies. Both simulated and monitored data showed that the effect of street sweeping on the pollutant loading was very small to negligible in spite of measurable and marked street sweeping efficiency. Removal of the pollutants from the curb or street surface storage by wind and traffic and subsequent deposition of these pollutants on adjacent hydrologically inactive surfaces, was responsible for this phenomenon. Street sweeping as a pollution control measure in midwestern meteorological conditions seems ineffective in urban areas with lower imperviousness, and only marginally effective (less than 25%) for commercial, highly impervious areas.
Journal (Water Pollution Control Federation) © 1985 Water Environment Federation