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SPE 073

Regional Groundwater Quality Appraisal, Cold Lake-Beaver River Drainage Basin, Alberta

The Alberta Geological Survey (AGS) of the Alberta Energy and Utilities Board (EUB) has partnered with Alberta Environment (AENV) Northern Region to compile and analyze groundwater data in the Cold Lake-Beaver River Drainage Basin. The project ... Show Abstract

Lemay, T.G.  Parks, K.  Andriashek, L.D.  Michael, K.  Jean, G.M.  Stewart, S.A.  Kempin, E.  2005-02-01

SPE 074

Regional Groundwater Resource Appraisal, Cold Lake-Beaver River Drainage Basin, Alberta

Regional Groundwater Resource Appraisal, Cold Lake-Beaver River Drainage Basin, Alberta The Alberta Geological Survey (AGS) of the Alberta Energy and Utilities Board (EUB) has partnered with Alberta Environment (AENV) Northern Region to compile and ... Show Abstract

Parks, K.  Andriashek, L.D.  Michael, K.  Lemay, T.G.  Stewart, S.A.  Jean, G.M.  Kempin, E.  2005-02-01

GEO 2002-04

Arsenic Concentrations in Quaternary Drift and Quaternary-Tertiary Buried Channel Aquifers in the Athabasca Oil Sands (In Situ) Area, Alberta

Abstract: Sampling of selected wells from Quaternary drift aquifers and Quaternary-tertiary buried channel aquifers, in the Athabasca Oil Sands (in situ) Area, was conducted between the summer of 1999 and the spring of 2001. The purpose of the sampling program was to obtain high-quality water samples that could be used to better define baseline groundwater chemistry in these geological units.Twenty-one water samples were collected from Quaternary intertill-intratill aquifers. Three water samples were collected from Quaternary-Tertiary buried channel aquifers. For each of the samples collected, field determinations of pH, oxidation-reduction potential, temperature, conductivity, dissolved oxygen and total alkalinity were determined. Samples were collected by the Alberta Geological Survey and analyzed by various laboratories for concentrations of major, minor and trace elements, organic compounds, as well as stable and radiogenic isotopes. One of the elements included in the water-sample analysis is arsenic.The majority of the Quaternary intertill-intratill aquifer water samples have arsenic concentrations below the analytical detection limit. Four of the water samples have arsenic concentrations that exceed the analytical detection limit of 0.01 mg/L. Arsenic conditions appear to be controlled by a combination of the following mechanisms: 1) adsorption to oxide and clay minerals; 2) competition between arsenic species and phosphorus ions for adsorption sites; 3) release of arsenic brought about by changes in pH; and 4) proximity to bedrock.All three samples from the Quaternary-Tertiary buried channel aquifer contained arsenic concentrations above the analytical detection limit. Arsenic concentrations in the Quaternary-Tertiary buried channel aquifer appear to be controlled by a combination of the following mechanisms: 1) competition between arsenic species and phosphorus or bicarbonate ions for adsorption sites; 2) release of arsenic brought about by changes in Eh; 3) dissolution of carbonate or evaporite minerals releasing associated arsenic; and 4) proximity to bedrock. Place Keywords 73l 73m 74d 74e 83i 83o 83p 84a 84b 84g 84h Theme Keywords athabasca oil sands quaternary

Lemay, T.G.  2003-07-01

GEO 2002-08

Static Water Levels and Completion Details of Nested Piezometers in the Quaternary-Tertiary(?) Succession, Athabasca Oil Sands (In Situ) Area, Alberta

Static Water Levels and Completion Details of Nested Piezometers in the Quaternary-Tertiary(?) Succession, Athabasca Oil Sands (In Situ) Area, Alberta Text referring to piezometer WEPA 00-1-158 was corrected to now refer to the correct piezometer ... Show Abstract

Lemay, T.G.  Jean, G.M.  2002-12-01