REVISION - 9/9/2009, 12:05:23 PM-JWD

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I. DESCRIPTION OF INJECTION ACTIVITY On April 30, 2009, the Environmental Protection Agency (EPA) Region 8 received an application for a Class V Underground Injection Control (UIC) permit submitted by Powertech (USA) Incorporated (Powertech). Powertech proposes to reinject groundwater pumped from the upper portion of the Fox Hills Formation during an aquifer pump test back into the same aquifer using the pumping well that pumped the groundwater to the surface. EPA is issuing a Draft Permit to authorize the injection of groundwater back into the aquifer from which is was pumped. The pump test and injection site is located in NE quarter of Section 33 in Township 10 North and Range 67 West, as shown in Figure 1. This location is 17 miles northeast of Fort Collins, 29 miles northwest of Greeley, 8 miles northwest of Nunn, and 8 miles northeast of Wellington. Powertech will be conducting the aquifer pumping test to meet the following objectives: • Site specific and regional characterization of geology and groundwater. • Assessment of hydrological characteristics and their lateral continuity within the portion of the Fox Hills aquifer containing uranium mineralization. • Evaluation of hydrologic communication in the mineralized zone between the pumping well and surrounding production zone monitoring wells. • Assessment of the presence of hydrologic boundaries, in any within the mineralized portion of the Fox Hills aquifer. • Evaluation of degree of hydrologic communication, if any, between the mineralized zone within the Fox Hills aquifer and the overlying and underlying aquifers in the test area. II. DESCRIPTION OF HYDROGEOLOGY The proposed injection well will be completed in the Upper Fox Hills Formation and will penetrate the overlying Laramie Formation shown in Figure 2. The Upper Fox Hills includes the "A" Sands and the "WE" Sand. The injection well will be screened in only the "A" Sands, and will, therefore, be pumping water from, and injecting water into, the "A" Sands. Groundwater in the "A" Sands is separated from groundwater in the overlying Laramie Formation by an impermeable, stratigraphic unit labeled "Basal Lignite" in Figure 2. This unit acts as a confining unit, preventing mixing between groundwater in the "A" Sands of the Upper Fox Hills Formation and the groundwater in the overlying Laramie Formation. The stratigraphic unit labeled "Mudstone" at the base of the Upper Fox Hills Formation also acts as a confining unit. One of the purposes of the aquifer pump test is to verify that the Basal Lignite, the mudstone between the "WE" Sand and the "B" Sand, and possibly the unlabelled mudstone between the "A" Sands and the "WE" Sands, are confining units impermeable to groundwater movement across them. The injection well site is located within the Cheyenne Basin, located north of Denver- Julesburg Basin as shown in Figure 3. The Cheyenne Basin is separated by the Denver-Julesburg Basin by the Greeley Arch. The injection well location is in the portion of the Cheyenne Basin where the geologic strata are dipping gently from west to east. Statement of Basis Powertech (USA), Incorporated. UIC Class V Permit # C051237-08412 Page 1 of 4 Appendix 2