Contaminant Fate Modelling for the Athabasca River PDF Download

Author: Golder Associates
Publisher: The Study
ISBN:
Category : Science
Languages : en
Pages : 172

View

Book Description
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.

Author: Golder Associates
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 482

View

Book Description
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.

Author: Mary Ellen Starodub
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 138

View

Book Description
Describes a study to construct and calibrate a steady-state food chain model to simulate the uptake and bioaccumulation of selected organic chemicals, with different physical and chemical properties, in the mountain whitefish, longnose sucker, and northern pike food web of the Athabasca River. The model is based on the WASP 14, Thomann-Connolly and Gobas food chain models. The modelling effort involved review and interpretation of sediment transport dynamics, contaminant distribution and concentration in sediment, water, and biota, and the refinement of the existing models. Results are presented from model simulations and compared to observed concentrations of such compounds as furans, resin acids, and chlorinated phenolics. The appendix includes a discussion of food chain modelling theory and its application to the present study.

Author: Northern River Basins Study (Canada)
Publisher:
ISBN:
Category : Athabasca River Watershed (Alta.)
Languages : en
Pages : 292

View

Book Description
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.

Author: Brian G. Brownlee
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 58

View

Book Description
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.

Author: M. Stone
Publisher:
ISBN: 9781901502268
Category :
Languages : en
Pages : 324

View

Book Description

Author: Mark S. J. Ouellett
Publisher:
ISBN:
Category : Aquatic ecology
Languages : en
Pages : 74

View

Book Description
Lists Northern River Basins Study technical reports by issue number, subject, and geographic area studied. Subject areas used to classify the reports are: hydrology/hydraulics, nutrients/dissolved oxygen, contaminants, food chain, drinking water, other uses, traditional knowledge, and synthesis and modelling. Ten geographic divisions are used: three each for the Athabasca and Peace Rivers, and one each of the Wapiti/Smoky rivers, Peace-Athabasca Delta, Lake Athabasca, and Rivière des Rochers/Slave River.

Author: Gary MacDonald
Publisher: Edmonton, Alta : The Study
ISBN:
Category : Water
Languages : en
Pages : 172

View

Book Description
An important component of an overall mutrients model for the northern river systems is the development of appropriate dissolved oxygen models. This study tries to assess the ability of the models (dissolved oxygen model DOSTOC) to predict observed conditions and to identify field research needs for model refinement.

Author: B. G. Krishnappan
Publisher: The Study
ISBN:
Category : Nature
Languages : en
Pages : 44

View

Book Description
"The transport characteristics of the fine sediment are essential parameters for modelling the transport, fate and bioaccumulation of contaminants in river systems. In this study, which was carried out for the Northern River Basins Study (NRBS), sediments from the Athabasca River near Hinton, Alberta were tested in the rotating flume and their transport parameters measured. A brief description of the experimental procedure and some significant results are presented in this report"--Abstract.

Author: Derek C. G. Muir
Publisher: The Study
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 110

View

Book Description
Summarizes levels of polychlorinated dioxins and furans in fish observed in various studies on the Peace and Athabasca rivers in Alberta and assesses temporal trends in these contaminants by comparison with previously published data. Begins with background information on chlorinated dioxins and furans, and describes site locations, sampling, and field and laboratory methodologies used. Spatial trends in relation to industrial pollution sources are also noted and risks to humans, fish, and wildlife are evaluated. Fish species analyzed include longnose sucker, burbot, mountain whitefish, and northern pike.