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SUNDAY MINE COMPLEX-HYDROGEOLOGIC REPORT <br /> • The Carnation Mine—DRMS Permit No. M-1977-416 <br /> • The St. Jude Mine— DRMS Permit No. M-1978-039HR <br /> • The West Sunday Mine—DRMS Permit No. M-1981-021 <br /> • The Topaz Mine—DRMS Permit No. M-1980-055HR <br /> The hydrologic characterization conducted is based upon data collected as a part of a <br /> groundwater occurrence and quality monitoring plan developed by the previous mine operators, <br /> Denison Mines (USA) Corp. (Denison) and later Energy Fuels Resources (EFR) and upon local <br /> and regional geological and hydrogeological data. <br /> 1.3 Report Data Sources and Organization <br /> Numerous historical documents were used as data and information sources to support <br /> preparation of this hydrogeology report. Key documents include the following: <br /> 1. Hydrogeologic Evaluation of the Sunday Mines Group, San Miguel County, Colorado. <br /> Prepared for Denison Mines (USA) Corp., prepared by CDM Inc. May 2009. <br /> 2. Environmental Protection Plan (EPP). Denison Mines (USA) Corp. Sunday Mines <br /> Group. Prepared by CDM Inc. and Denison Mines (USA) Corp. January 2012. <br /> 3. Environmental Geochemistry Investigation of Rock and Soil Material, Sunday Group <br /> Mines. Prepared for Denison Mines (USA) Corp. Prepared by CDM Inc. May 2009. <br /> 4. Sunday Mines Environmental Assessment CO-800-2007-104EA. Denison Mines (USA) <br /> Corp. Prepared for U.S. Department of Interior Bureau of Land Management. January <br /> 2009. <br /> 5. Plan of Operations for the Topaz Mine. Prepared by Tetra Tech MM, Inc. for Denison <br /> Mine (USA) Corp. Prepared for U.S. Department of Interior Bureau of Land <br /> Management. December 2008 <br /> 6. Drainage Report for Denison Mines Sunday Mines Group, San Miguel County, Colorado. <br /> Prepared for Denison Mines (USA) Corp. Prepared by CDM Inc. May 2008. <br /> This report has been organized to include relevant introductory and background information, as <br /> well as more recently compiled hydrogeologic data. Combined, this information will provide a <br /> comprehensive discussion of the hydrogeology of the SMC. The report consists of the following <br /> sections: <br /> 1.0 Introduction, <br /> Western Water& Land, Inc. 2 <br />