Search

1985

A.A. Aquatic Research Ltd., R.L. & L. Environmental Services Ltd.

Syncrude Canada Ltd., which has operated an oil sands extraction plant at Mildred Lake since 1978, has undertaken various environmental studies associated with the development since 1971. The purpose of the 1984 investigation, which involved a multi-disciplinary study team, was to characterize...

1978

Grant, W., Tsui, P., Tripp, D.

The West Interceptor Ditch was constructed to divert water from several small creeks into Bridge Creek, a tributary of Beaver Creek, which eventually flows into the Athabasca River. During the diversion process, a portion of lower Beaver Creek was restructured to accommodate discharge from the...

1977

Lutz, A., Hendzel, M.

Analyses are given for up to 12 metals and 4 pesticides with PCBs, of aquatic environment from 15 study sites along or near the Athabasca River from Fort McMurray north to the confluence of the Peace and Slave Rivers. There were 560 fish (8 species), 15 water, 14 sediment and a few phyto-plankton...

1977

Jantzie, T. D.

“A Synopsis of the Physical and Biological Limnology and Fishery Programs within the Alberta Oil Sands Area\" forms a background reference document on the limnology of the AOSER Program study area in northeastern Alberta. Within the report, the following items are discussed and summarized: data...

1978

Sprague, J. B., Holdway, D. A., Stendahl, D.

Vanadium concentrations of 2.4 to 5.6 mg/L were lethal in 7 days to rainbow trout of wet weight 1.2-6.2 g. The LC50 varied slightly over the 12 combinations of water quality, from hardness 30 to 350 units and pH 5.5 to 8.8. The 7-day LC5O may be estimated by the following equation, which...

1986

Alberta Environmental Centre

The purpose of this study was to determine the acute and subacute toxicity of bitumen to rainbow trout. The bitumen was collected along the banks of the Athabasca River downstream of Fort McMurray during 1984. Prior to experimentation, the bitumen was fractionated in water at 35°C, using an...

1979

Lake, W., Rogers, W.

Mine depressurization water obtained from five wells on Lease 17 held by Syncrude Canada Limited, was examined for chemical composition and acute toxicity to two species of fish. In the first series of experiments, mine depressurization water was diluted with various proportions of water...

1979

Rogers, W., Lake, W.

Volume 2 In order to conduct oil sands mining operations in the surface mining region of the Athabasca oil sands deposits, most regions require depressurization of the basal sandstone formations. The groundwater produced by depressurization operations is of poor enough quality to be toxic to...

1976

Lake, W. H.

When evaluating this data, lethality (i.e. death of the organism) is the symptom being observed. Acutely lethal refers to a sample killing 50% of a population after 96 hours exposure. 1. The dike filter drainage was found to be acutely toxic to both rainbow trout and brook sticklebacks. The...

1979-01-01

Bond, W. A., Machniak, K.

The study of the fish fauna in the Muskeg River commenced in 1976 with the general objective of describing the baseline states of this resource in the watershed and providing a quantitative estimate of the significance of the Muskeg River to the fisheries of the Athabasca River system. The work...