|Title||SOURCES: developing indicators and understanding environmental impacts in the oils sands region / SOURCES: développer des indicateurs et comprendre les impacts environnementaux dans la région des sables
|Download||Download (whole publication) |
|Author||Savard, M M|
|Source||Public presentations of May 21st, 2019: Environmental Geoscience Program, current status of research projects (phase 2014-2019); by Jacob, N; Parsons, M; Rivard, C; Savard, M M; Larmagnat, S; Outridge, P
M; White, D; Kao, H; Lintern, G; Geological Survey of Canada, Scientific Presentation 104, 2019 p. 35-45, https://doi.org/10.4095/314920 (Open Access)|
|Publisher||Natural Resources Canada|
|Related||This publication is contained in Jacob, N; Parsons, M;
Rivard, C; Savard, M M; Larmagnat, S; Outridge, P M; White, D; Kao, H; Lintern, G; (2019). Public presentations of May 21st, 2019: Environmental Geoscience Program, current status of research projects (phase 2014-2019), Geological Survey of Canada,
Scientific Presentation no. 104|
|File format||pdf (Adobe® Reader®)|
|NTS||73M; 74D; 74E; 74L; 83P; 84A; 84H; 84I|
|Area||Athabasca River; Fort McKay; Fort McMurray; Muskeg River|
|Lat/Long WENS||-113.5000 -110.0000 58.5000 55.7500|
|Subjects||environmental geology; fossil fuels; economic geology; hydrogeology; regional geology; geochemistry; soils science; Nature and Environment; Science and Technology; Government and Politics; Economics and
Industry; environmental studies; environmental impacts; petroleum resources; petroleum industry; hydrocarbons; oil sands; mining; open pit mining; mine waste products; tailings; ecosystems; lithostratigraphy; groundwater geochemistry; groundwater
flow; bedrock geology; lithology; metals; isotopic studies; lithium geochemistry; hydrogen isotopes; carbon isotopes; stable isotope studies; radioisotopes; biogeochemistry; nitrogen; oxygen isotopes; atmospheric geochemistry; soils; bitumen; lake
sediment geochemistry; snow geochemistry; modelling; transport mechanisms; organic geochemistry; dendrochronology; copper geochemistry; Environmental Geoscience Program (EGP); Athabasca Oil Sands; methodology; environmental impact assessment;
anthropogenic impacts; contaminants; acid extractible organics; forests; polycyclic aromatic hydrocarbons; forest fires; indicators; atmospheric emissions; rare earth element analyses|
|Illustrations||images; geoscientific sketch maps; tables; spectra; flow diagrams; plots; bar graphs; location maps; photographs; schematic representations; time series|
|Released||2019 10 10|
|Abstract||All research activities of SOURCES relate to developing new methodologies to allow distinguishing contaminants that are naturally released to water and terrestrial ecosystems from those produced by oil
sands (OS) extraction activities. Main objectives: (1) assessing how new indicators and approaches for waterborne and airborne contaminants can help identify OS extraction-related changes to the natural regimes; and (2) understanding processes
controlling the distribution of contaminants in the broad region of the OS open-mining developments. |
The current research is a direct follow up of NRCan previous test study (OF 7195) as there is a need to specifically
continue characterizing the various natural sources of contaminants (numerous lithostratigraphic units and groundwater systems); better constrain the anthropogenic signals of the contaminants, and identify, quantify and model the flux of OS-related
chemicals into the groundwater near open-mining OS extraction activities, at the regional scale.
Metals - This activity explores lithium (delta-7Li) isotopes of groundwater as an indicator to strengthen the discrimination between natural and
OS-derived contaminants, and the chemistry and reactive transport of metals to understand their distribution and fate.
AEOs - This study specifically evaluates the potential of hydrogen (delta-2H), and stable (delta-13C) and radioactive
(delta-14C) carbon isotopes for characterizing Acid Extractible Organics (AEOs), and investigates the biogeochemical processes controlling their distribution in groundwater.
Forest N Cycle - This research involves
characterizing airborne nitrogen (N) contaminants in air wet and dry samples from outside the OS region using new isotopic methods (on-line simultaneous delta-15N, delta-18O and delta-17O values); to distinguish their ranges from OS air results. It
further investigates the possible impacts of these airborne N contaminants on processes controlling the long-term tree-ring delta-15N trends, by determining delta-15N values in the complete suite of the soil-fungi-root-stem-leave continuum. This
research also addresses the question as to how the nutritive regimes of pine and spruce stands and the forest N cycle are modified by OS operations (coll. with ECCC, CFS-Q, CFS-Ed).
PAHs -The key issue here is quantifying natural polycyclic
aromatic hydrocarbons (PAHs) related to forest fires and bitumen-containing rocks from anthropogenic sources. Naturally present in bitumen, PAHs are also released into the environment through the incomplete combustion of organic matter, whether from
modern biomass or fossil fuels, and via diagenetic processes. The current activities focus on applying compound specific delta-13C, delta-2H and radiocarbon analysis (14C) to sediment cores and snow of lakes in the OS region in which PAHs from
forest fires can perhaps be distinguished from those that are OS mining-related and hence contain no detectable 14C.