Investigation of Dry‐Weather Pollutant Entries into Storm‐Drainage Systems
Publication: Journal of Environmental Engineering
Volume 120, Issue 5
Abstract
This article describes the results of a series of research tasks to develop a procedure to investigate non‐storm‐water (dry‐weather) entries into storm‐drainage systems (Pitt et al. 1993a, 1993b). Dry‐weather flows discharging from storm‐drainage systems contribute significant pollutant loadings to receiving waters, and although they can originate from many sources, the most significant include sanitary wastewater, industrial‐ and commercial‐pollutant entries, failing septic‐tank systems, and vehicle‐maintenance activities. Protocols are discussed to characterize the drainage area, locate and identify polluted outfalls, estimate the magnitudes of non‐storm‐water entries, and locate and correct the non‐storm‐water entries into the storm‐drainage system. If these loadings are ignored (e.g., by only considering wet‐weather storm‐water runoff), only limited improvement in receiving‐water conditions may occur with storm‐water pollution‐control programs.
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Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Apr 30, 1993
Published online: Sep 1, 1994
Published in print: Sep 1994
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