Distribution of Organic Contaminants in Bottom Sediments, Peace and Athabasca River Basins, 1988 to 1992
Distribution of Organic Contaminants in Bottom Sediments, Peace and Athabasca River Basins, 1988 to 1992

Author: Brian G. Brownlee

Publisher:

Published: 1996

Total Pages: 58

ISBN-13:

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Presents results of contaminant analyses of bottom sediments collected from the Peace and Athabasca river basins 1988-90 and 1992. Contaminant groups represented are the polychlorinated dibenzo-p-dioxins and dibenzofurans, resin acids, chlorophenolic compounds, and polycyclic aromatic hydrocarbons. Contaminant concentrations were correlated with percent organic carbon of the fine fraction (the fraction on which analysis was performed. Correlations between concentrations of bleached kraft mill related contaminants were also investigated and results are presented.

Ecological Causal Assessment
Ecological Causal Assessment

Author: Susan B. Norton

Publisher: CRC Press

Published: 2014-10-29

Total Pages: 516

ISBN-13: 1439870152

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Edited by experts at the leading edge of the development of causal assessment methods for more than two decades, Ecological Causal Assessment gives insight and expert guidance on how to identify cause-effect relationships in environmental systems. The book discusses the importance of asking the fundamental question "Why did this effect happen?" bef

Northern River Basins Study
Northern River Basins Study

Author: Northern River Basins Study (Canada)

Publisher:

Published: 1996

Total Pages: 292

ISBN-13:

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Report to the federal ministers of Environment and Indian & Northern Affairs, Alberta's Minister of Environmental Protection, and NWT's Minister of Renewable Resources. Summarises the main scientific findings of the Northern River Basins Study, which was established to examine the relationship between industrial, municipal, agricultural, and other development and the Peace, Athabasca, and Slave River basins. Reviews the characteristics of the northern river basins and their peoples, the organisation of the Study, and major findings in the areas of environmental overview, use of aquatic resources, traditional knowledge, flow regulation, fish distribution and habitat, nutrients, dissolved oxygen, contaminants, drinking water, ecosystem health, modelling, human health, and cumulative effects. Recommendations by the Study Board, First Nations, and scientific advisors regarding such issues as basin management, monitoring, research, public participation, and a successor organisation are then presented. Also includes a summary of opinions, suggestions, and recommendations expressed at 17 community workshops held throughout the northern river basins area.

Ecosystem Health and Integrated Monitoring in the Northern River Basins
Ecosystem Health and Integrated Monitoring in the Northern River Basins

Author: Kevin Joseph Cash

Publisher: Canadian Government Publishing

Published: 1996

Total Pages: 92

ISBN-13:

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The NTBS was designed to address the ecological concerns about pulp mill expansion, and to increase scientific knowledge about environmental conditions [ecology, ecosystem sustainability, water pollution and control, habitat, effect on fish and fishing, etc.] in the major river systems of the north. The study's objectives were to gather and interpret sound scientific information about the basins, develop appropriate recommendations for basin management, and communicate effectively with the public. The government response report confirms the governments' commitment to ecosystem sustainability and to pollution control in northern rivers. First Nations and Metis aboriginal [native] peoples contributed significantly to the NRBS.

Radionuclide Levels in Fish from Lake Athabasca
Radionuclide Levels in Fish from Lake Athabasca

Author: Gene Leslie Smithson

Publisher: Edmonton, Alta. : The Study

Published: 1993

Total Pages: 70

ISBN-13:

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Report of a study, 1993, in which fish from two traditional winter harvest sites, Hook Point and Bustard Island (west end of Lake Athabasca) were collected and examined for possible contamination from uranium mine-mill operations around the lake.

Contaminants in Environmental Samples
Contaminants in Environmental Samples

Author: Georgine M. Pastershank

Publisher: The Study

Published: 1995

Total Pages: 114

ISBN-13:

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This report provides an interpretation of analytical results for dioxins and furans in water, biofilm, sediment, invertebrates, and fish samples collected on the Athabasca and Peace Rivers in 1992. The analysis focused on the partitioning, fate, and bioaccumulation of the two compounds having the greatest potential to accumulate in animal tissue, namely 2,3,7,8-tetrachloro dibenzo-p-dioxin and 2,3,7,8-tetrachloro dibenzofuran, in order to assist in the assessment of ecosystem health and long-term effects. The report compares the levels of these compounds found upstream and downstream from pulp and paper mills, and compares the detected levels to the limits recommended under the Canadian Environmental Quality Guidelines (for sediment and water) and Health Canada guidelines (for fish tissue).

Contaminant Fate Modelling for the Athabasca River
Contaminant Fate Modelling for the Athabasca River

Author: Golder Associates

Publisher: The Study

Published: 1996

Total Pages: 172

ISBN-13:

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Describes and presents simulation results using a revised model simulating the fate of contaminants in the Athabasca River. The revised fate model allows predictive sediment transport simulation within the WASP4 model framework, predicts resuspension from hydraulic information supplied by WASP4 and from user-supplied sediment characteristics, and can be applied to different flow conditions without having to re-describe sediment transport rates. Several simulations were run using input files from the original model calibration. Program listings of subroutines are included.

Contaminant Fate Modelling, Athabasca, Wapiti and Smoky Rivers
Contaminant Fate Modelling, Athabasca, Wapiti and Smoky Rivers

Author: Golder Associates

Publisher:

Published: 1996

Total Pages: 482

ISBN-13:

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Describes and presents simulation results from numerical models of the transport and fate of environmental chemicals in northern Alberta rivers. The models were developed using the USEPA WASP modelling system and were structured as one-dimensional (longitudinal) models with separate, interacting water column and bed sediment compartments. Seven selected organic chemicals were simulated over 1992-93 for the Athabasca River and over 1990-91 for the Wapiti/Smoky River system. Chemicals simulated included 2,3,7,8-tetrachloro dibenzofuran, dehydroabietic acid, and phenanthrene. The models were first calibrated for sodium and total suspended solids. Organic chemicals were simulated using a set of environmental fate constants developed from a literature search, numerical estimation software, and estimation from field data. Results of initial simulations were compared to observed data and adjustments made to selected constants to improve the calibration.