Monitoring well into abandoned deep-well disposal formations at Sarnia, Ontario

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Authors:Raven, K. G.; Lafleur, D. W.; Sweezey, R. A.
Author Affiliations:Primary:
Intera Technol., Ottawa, ON, Canada
Volume Title:Canadian Geotechnical Journal Revue Canadienne de Géotechnique
Source:Canadian Geotechnical Journal = Revue Canadienne de Géotechnique, 27(1), p.105-118. Publisher: National Research Council of Canada, Ottawa, ON, Canada. ISSN: 0008-3674
Publication Date:1990
Note:In English with French summary
Summary:A 300 m deep monitoring well was completed to the Detroit River Group in Sarnia, Ontario, to evaluate potential near-surface impacts resulting from previous deep injection of industrial waste. Detailed logging, testing, and sampling were performed to evaluate vertical distribution of industrial waste and to determine hydraulic conductivity and hydraulic head in the disposal horizon and confining formations. Results indicate the hydraulic conductivity of the disposal formation is 2×10-9 to 2×10-7 m/s and that of most of the confining shale and limestone formations is less 1×10-10 m/s. Analyses of groundwater samples and results from other studies show that industrial waste, characterized by elevated phenol concentrations, is present in a 10 m horizon in the Lucas dolomite disposal formation at 192 m depth. Waste is also likely present within 2-3 m thick, high-permeability limestone layers at 74 and 123 m depth in confining units of Hamilton Group. Because of generally low vertical hydraulic conductivity of the confining formations, waste in the permeable limestone layers was likely introduced via poorly constructed disposal wells, cavern storage wells, or abandoned oil and gas wells. The hydraulic conductivity and hydraulic head data indicate the high pressures from injection into the disposal formation have dissipated. The head within the zone of residual contamination in the disposal formation is now 8 m below the level of the St. Clair River. The hydraulic data and chemical composition of the injected waste show that the discharges of tarry liquids on the bottom of the St. Clair River in 1984 and 1985 were not caused by upward migration or injected waste. Modified journal abstract.
Subjects:Carbonates; Detroit River Group; Devonian; Distribution; Dolomite; Drilling; Dundee Limestone; Engineering geology; Evaluation; Fresh water; Ground water; Hamilton Group; Hydraulic conductivity; Hydrogeology; Industrial waste; Injection; Lucas Formation; Middle Devonian; Monitoring; Paleozoic; Permeability; Porosity; Rock mechanics; Surveys; Waste disposal; Water quality; Water supply; Water wells; Alberta; Canada; Eastern Canada; Michigan Basin; North America; Ontario; Saint Clair River; Western Canada; Amherstburg Formation; Fresh Water Aquifer; Kettle Point Formation; Materials, properties; Salina Formation; Wells; Widder Formation
Record ID:1990054215
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute.
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