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Investigations of poly-chlorinated biphenyls in bottom sediments of the Bear-Wapiti-Smoky-Peace and Upper Athabasca river systems, 1989-2000

Description

Studies of contaminant distributions by the Northern River Basins Study (NRBS) revealed high levels of PCBs in fish in the upper Athabasca and in the Wapiti-Smoky rivers, relative to other areas... More ≫

Description

Studies of contaminant distributions by the Northern River Basins Study (NRBS) revealed high levels of PCBs in fish in the upper Athabasca and in the Wapiti-Smoky rivers, relative to other areas in the basins. In response to recommendations of the NRBS, the purpose of this work was to investigate the source and reasons for the PCB contamination. In co-ordination with other projects under the Northern Rivers Ecosystem Initiative (NREI) on fish, water, and benthos, this project investigated PCBs in river bottom sediments to see if there were spatial or temporal patterns that might identify the source(s) of contamination.

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Adsorbable organic halide (AOX) sampling in the Athabasca and Wapiti-Smoky Rivers : fall & winter 1989-90

Description

Adsorbable Organic Halide (AOX) has become an accepted measure of chlorinated organic material, and is used to monitor and regulate bleached Kraft pulp mill effluents. Two surveys on the... More ≫

Description

Adsorbable Organic Halide (AOX) has become an accepted measure of chlorinated organic material, and is used to monitor and regulate bleached Kraft pulp mill effluents. Two surveys on the Wapiti-Smoky river system and on the Athabasca River were carried out in 1989-90 to assess the presence and downstream persistence of AOX.

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