00000nam 2200000za 4500 9.846885 CaOODSP 20241203113640 cr ||||||||||| 171109s1984 oncab||fo f000 0 eng d CaOODSP eng eng fre n-cn-on En13-5/83-17E-PDF Marsalek, J. Toxic substances in urban land runoff in the Niagara River area [electronic resource] / by J. Marsalek and B. Greck. Burlington, Ont. : Environmental Hydraulics Section, Hydraulics Division, National Water Research Institute, 1984. 1 v. (various pagings) : ill., maps NWRI ; 83-17 Cover title. "January, 1984". Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Frequencies, concentrations, and annual loadings of 51 selected persistent toxic substances in urban runoff have been studied in the Niagara area. Toward this end, samples of urban runoff and sediment have been collected at 15 sites in Fort Erie, Niagara Falls, and Welland. The collected samples have been analyzed for polychlorinated biphenyls, organochlorine pesticides, polyaromatichydrocarbons, chlorinated benzenes, and trace elements. For each substance studied, frequencies of occurrence and mean event concentrations have been determined. Using such data and the calculated annual runoff volumes and sediment yields, estimates of annual loadings of toxics transported by urban runoff and sediment have been produced for the Niagara area"--Abstract, p. i. Includes abstracts in French. gccst Water pollution gccst Toxic substances Greck, B. J. Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 83-17 (CaOODSP)9.844121 PDF 8.04 MB https://publications.gc.ca/collections/collection_2017/eccc/En13-5-83-17-eng.pdf