00000nam 2200000zi 4500 9.877118 CaOODSP 20241203113650 m o d f cr bn||||||||| 190729s1994 onca ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-on En13-5/94-61E-PDF Marsalek, J., author. Urban impacts on microbiological pollution of the St. Clair River in Sarnia, Ontario / J. Marsalek, B.J. Dutka and I.K. Tsanis. Burlington, Ontario : Aquatic Ecosystem Protection Branch, National Water Research Institute, [1994] 1 online resource (4 unnumbered pages, 17 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; no. 94-61 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 15-17). "Urban impacts on faecal bacterial pollution of the near-shore zone of the St. Clair River in Sarnia were studied by means of field observations and computer modelling. Towards this end, water samples were collected at various sources of faecal pollution and at nine sampling stations in the river, and analysed for faecal coliform, faecal streptococci, Escherichia coli, Pseudomonas aeruginosa and coliphage. Probabilistic distributions of the observed microorganism densities were used to assess the levels of faecal bacteria pollution, describe the impacts of urban sources on faecal bacteria concentrations in the river, and make inferences about compliance with the recreational water quality guidelines. Relatively high probabilities of guideline violations (p > 30%, at most sites, in dry weather) indicated the need for remedial measures. The screening of such measures was accomplished by preliminary modelling of indicator bacteria in the receiving waters, using a bacteria loading model interfaced with a receiving water model"--Abstract. Includes summaries and abstracts in English and French. gccst Rivers gccst Waste water gccst Water pollution gccst Models Dutka, B. J., author. Tsanis, Ioannis K., 1953- author. Canada. Environment Canada. National Water Research Institute (Canada). Aquatic Ecosystem Protection Branch. NWRI contribution ; no. 94-61. (CaOODSP)9.844121 PDF 1.99 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-94-61-eng.pdf