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Exhibit G2 <br /> Whetstone <br /> 4 <br /> Associates Technical Memorandum <br /> To: Glen Williams(Cotter Corporation) 4I22A <br /> From: Susan Wyman, P.E., P.G. (Whetstone Associates) <br /> Date: April 13,2012 <br /> Subject: Hydrogeologic Data Compilation for the JD-8 Mine <br /> 1. INTRODUCTION <br /> Regional and local hydrogeologic information for the 1D-8 Mine was compiled in the Environmental <br /> Protection Plan (EPP), which was attached as Exhibit U to the JD-8 Mine Plan Amendment AM-01 <br /> and submitted to the Colorado Division of Mining. Reclamation, and Safety (DRMS) in June 2011. <br /> DRMS reviewed the Mine Plan Amendment and EPP, and requested further characterization of <br /> groundwater conditions at the 1D-8 Mine site (DRMS, 2011). Additional site-specific information <br /> was compiled and presented to DRMS at a meeting held on November 30, 2011. <br /> The purpose of this technical memorandum is to summarize the site-specific hydrogeologic <br /> information from the EPP and additional data from geologic logs and cross sections that were <br /> discussed at the November 30th meeting. Groundwater data from exploration drill holes are <br /> presented in this technical memorandum, along with the location and completion specifications for a <br /> proposed downgradient monitoring well. <br /> Ili2. HYDROSTRATIG RAPH V <br /> The principal stratigraphic units at the JD-8 Mine site are shown in Table I and include the <br /> following: <br /> • Colluvium and aeolian soil as a thin veneer on the escarpment <br /> • Brushy Basin Member Morrison Formation <br /> • Salt Wash Member Morrison Formation <br /> • Summerville Formation <br /> • Entrada Sandstone <br /> A stratigraphic cross section of the JD-8 Mine at the Monogram Mesa escarpment is shown in Figure <br /> 1 (White, 2006). A geologic map and regional cross section are provided in Figure 2 and Figure 3. <br /> respectively. Uranium and vanadium ore at the 1D-8 Mine is hosted by the Salt Wash Member of <br /> the Morrison Formation, which overlies the Summerville Formation (low-permeability shales <br /> interbedded with minor sandstones). The Entrada Sandstone underlies the Summerville Formation <br /> and is typically water-bearing. <br /> OpWhetstone Associates, Inc. <br /> 104 W Ruby Avenue 6 Gunnison,Colorado 81230 6 Phone 970-841-7471 ♦ Fax 970-641-7431 <br />