Occurrence and pathways of toxic chemicals in the North Saskatchewan River : final report to Toxfund on 1984-1985 activities, North Saskatchewan River Toxics Survey / E.D. Ongley ... [et al.]. : En13-5/85-107E-PDF

"This survey is part of a continuing study of pathways and of ecotoxicological effects of toxic contaminants in the North Saskatchewan River and in Tobin Lake, the principal sink for suspended sediments of the Saskatchewan Basin. This research program, although managed by the National Water Research Institute (NWRI), is a shared program between the NWRI of Inland Waters Directorate and the Environmental Protection Service, Western & Northern Region. This program has broad relevance to toxic chemical management, both in terms of environmental sensing procedures and of control protocols in river and river lake systems in Canada. The immediate objective is to determine the pathways and significance of priority and unlisted toxic chemicals in water, suspended sediments, and to evaluate toxic effects through use of two different bioassay procedures (Ames and P.redivivus). By contrasting the pathways, chemistry and toxicological response in two different river regimes (high versus low flow), we expect to be able to make significant statements about new andmore cost—efficient methods for carrying out toxic chemical sensing in aquatic systems"--Exec. summary.

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