Pollutant Concentrations from Homogenous Land Uses

by Irwin Polls, Aquatic Biologist; Biology Research, Metropolitan Sanitary Dist. of Greater Chicago, Roselle, Ill.,
Richard Lanyon, (M.ASCE), Asst. Dir. of Research and Development; Metropolitan Sanitary Dist. of Greater Chicago, Chicago, Ill.,

Serial Information: Journal of the Environmental Engineering Division, 1980, Vol. 106, Issue 1, Pg. 69-80

Document Type: Journal Paper


A stormwater-runoff sampling program was developed for a 208 areawide water-quality study in northeastern Illinois. Analysis of the data collected with automatic sampling equipment from the 16 homogenous land-use watersheds during April thru July, 1976 permitted generalized comparisons of runoff characteristics from the seven land-use categories. The quality data indicated that the mean concentration of most constituents measured in stormwater did not vary significantly, except for total, suspended, and volatile solids. Commercial land use had the greatest concentration of pollutants in stormwater and the forest the least. When compared to sewage, the mean concentration for BOD5, COD, and solids from nonpoint runoff were equal to or higher than concentrations found in wastewater receiving secondary treatment. By contrast, the mean concentrations for ammonium nitrogen, nitrite-nitrate nitrogen, and soluble phosphorus from stormwater were lower than in a secondary-treated effluent.

Subject Headings: Stormwater management | Pollutants | Homogeneity | Soil pollution | Land use | Runoff | Solid mechanics | Nitrogen | Illinois | United States

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