Pierre River Mine Project

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WATER AENV SIRS 15 – 43 Section 12.1 SRC (Syracuse Research Corporation). 2007. CHEMFATE Online Database. U.K.E.A. (United Kingdom Environmental Agency). 2000. Risk Assessment of Acrylamide (Draft Report). UKEA, Ecotoxicology & Hazardous Substances National Centre. CAS No. 79-06-1. Wallingford, Oxfordshire. Visser, S. A., G. Lamontagne, V. Zoulalian and A. Tessier. 1977. Bacteria Active in the Degradation of Phenols in Polluted Waters of the St. Lawrence River. Archives of Environmental Contamination and Toxicology. 6:455-70. Wilson, B. H., G. B. Smith and J. F. Rees. 1986. Biotransformation of Selected Alkylbenzenes and Halogenated Aliphatic Hydrocarbons in Methanogenic Aquifer Material: A Microcosm Study. Environmental Science and Technology. 20:997-1002. Zoeteman, B.C.J., K. Harmsen, and J.B.H. Linders. 1980. Persistent Organic Pollutants in River Water and Ground Water of the Netherlands. Chemosphere. 9:231-249. Request 19c What is the maximum anticipated concentration modeled for each organic constituent of concern and what was the predicted time required to achieve acceptable levels based upon this concentration? Response 19c The maximum anticipated concentration modelled for each organic constituent of concern will occur at the end of mining operations, before the lakes are filled with fresh water. As described in EIA, Volume 4A, Section 6.5.6.3, the pit lakes will initially contain process-affected waters comprised of seepages from backfilled mine pits and reclaimed sand swale and ridge areas, consolidation flux from non-segregating tailings (NST) in reclaimed mine pits and mature fine tailings (MFT). The assumed chemical profiles of these waters is presented in EIA, Volume 4B, Appendix 4-2, Table 37. During this period, the lakes will not discharge to the receiving environment. As described in EIA, Volume 4A, Section 6.5.6.3, water quality in the Pierre River Mine pit lakes is anticipated to be acceptable for release at the time of initial discharge in 2049. Predicted concentrations for all constituents in each pit lake, in 2049 and in the future, are presented in EIA, Volume 4B, Appendix 4-7, Section 4. April 2010 Shell Canada Limited 12-21 CR029
WATER AENV SIRS 15 – 43 Question No. 20 Request Volume 2, SIR 280, Page 21-21. Section 12.1 Shell states that the reaches of Pierre River, Eymundson Creek and Big Creek located within the LSA are considered to be lost in their entirety and any change in habitat as a result of change in flow was incorporated into the fish area lost, as described in EIA Vol. 4, Appendix 4-6, Table 7. 20a Describe how the change in flow may affect fish and fish habitat outside the LSA, with particular focus on winter flows. Response 20a The Athabasca River downstream of the Firebag River confluence would be the only watercourse which may be potentially affected outside of the Pierre River Mine local study area (LSA) from changes in habitat area. Potential changes to flows in the Athabasca River from construction, operations and closure activities in the Pierre River Mine development area were considered in Section 6.7.7.3 (EIA, Volume 4, Section 6.7, page 6-663). The change in flows in the Athabasca River due to closed-circuit operations and reclaimed areas resulting from the Pierre River Mine is considered negligible (EIA, Volume 4, Section 6.4.7.3). Therefore, no impacts to fish habitat in the Athabasca River would be expected from changes to streamflows resulting from activities in the Pierre River Mine development area, other than those potentially related to water withdrawals for the project. Reference A discussion of changes to Athabasca River flows and fish habitat relating to water withdrawals is in the EIA, Volume 4, Section 6.7.7.3. Flows in the Athabasca River, including winter flows, are being managed under the Water Management Framework for the lower Athabasca River (AENV and DFO 2007). A Phase 2 Framework is currently being developed by Alberta Environment and Fisheries and Oceans Canada, which will further define how cumulative withdrawals under low flow conditions will be managed and the potential effects on fish habitat associated with cumulative withdrawals. Shell has committed to operating under the current framework and any future frameworks that define limits to water withdrawals on the Athabasca River. AENV and DFO (Alberta Environment and Fisheries and Oceans Canada). 2007. Water Management Framework: Instream Flow Needs and Water Management System for the Lower Athabasca River. Edmonton, AB. 37 pp. 12-22 Shell Canada Limited April 2010 CR029
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Application for Approval of the Pie
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PIERRE RIVER MINE SUPPLEMENTAL INFO
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CONTENTS LIST OF ILLUSTRATIONS Tabl
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INTRODUCTION OVERVIEW Table 1-1: Gu
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INTRODUCTION NAVIGABLE WATERS Secti
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INTRODUCTION NAVIGABLE WATERS Secti
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Section 2.2 ERRATA EIA, EIA UPDATE
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Section 2.2 ERRATA EIA, EIA UPDATE
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Section 2.3 ERRATA SUPPLEMENTAL INF
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Section 2.3 ERRATA SUPPLEMENTAL INF
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MINING AND PROCESSING ERCB SIRS 3 -
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AIR ERCB SIRS 40 - 45 Request 41b B
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WATER ERCB SIRS 46 - 79 Section 7.1
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WATER ERCB SIRS 46 - 79 References
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EPEA APPROVALS AENV SIRS 90 - 96 Qu
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GLOSSARY CEAA The abbreviation for
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GLOSSARY ESR The abbreviation for e
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GLOSSARY landform The configuration
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GLOSSARY OSDG The abbreviation for
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GLOSSARY SEWG The abbreviation for
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Pierre River Mine Project

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