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THE INFORMATION ON THIS PAGE DOES NOT NEED TO BE HELD CONFIDENTIAL <br /> Exhibit C-AMSO,LLC Notice of Intent Supplemental Information <br /> • Section IV Item 4. Holes TM-1 thru TM-4 will be installed to facilitate cross.-hole <br /> geophysical testing. Each hole will be fully cased to the bottom of the hole. Every effort <br /> will be made to keep the holes along the same alignment,which is imperative for <br /> accurate tomography. The T-1 hole will be drilled to the base of R-1 Zone and cased to <br /> the top of the R-1 Zone. There will be approximately 120 feet of open hole in the R-1 <br /> below the casing shoe. <br /> The second pad is the Horizontal Bore Hole(HB)pad from which two holes will be <br /> drilled. The first will be an exploration hydrology well(HB-L3)drilled to the;Wasatch <br /> Formation and completed as,an L-3 monitor well. The second hole will be a large <br /> diameter hole(HB-1)directionally drilled to horizontal with a radius of approximately <br /> 1327 feet. Casing will be run to the end of the radius. The HB-1 hole will continue to be <br /> directionally drilled so that it intercepts the bottom of the TI hole at the R-1lI.0 contact. <br /> The third pad(MWP-2)will have three hydrologic monitor wells drilled and completed. <br /> The first monitor well will be cored from the top of the illite-rich zone to approximately <br /> 100 feet into the Wasatch Formation. The hole will be completed as a Wasatch monitor <br /> well. A second monitor,well will be drilled and completed in the L-3 Zone. The last well <br /> drilled on the MWP-2 pad will be a"B"Groove(BG)monitor well. This we'll will be <br /> drilled and completed across the entire water-producing zone. <br /> The four new monitoring wells(HB-L3,MWP-2 BG,MWP-2 L3,and MWP 2 WS)and <br /> the existing well on the former Shell Drill Pad(formerly referred to as 21-24-.298; <br /> referred to herein as MWP-1 L3)will be used for hydrologic testing and groundwater <br /> monitoring purposes. Groundwater monitoring will be conducted to establish baseline <br /> water quality conditions and monitor water-quality conditions during subsequent pilot- <br /> scale process testing. Well locations and completion intervals were selected to provide <br /> upgradient monitoring of water-quality within the L3 zone and downgradient monitoring <br /> of water quality within the B-Groove,L3,and Wasatch Formation. Potentiornetric <br /> surface maps of the Upper and Lower Aquifers within the Piceance Basin are;shown in <br /> Figures C.2 and C.3. <br /> Hydrologic testing may include hydraulic testing with straddle-packer system,step- <br /> drawdown test,and constant-rate pumping tests. Testing will be accomplished by <br /> pumping groundwater from one well or hole and monitoring hydraulic heads in the well <br /> or hole as well as one or more of the other wells. <br /> All water generated during drilling and hydrologic testing will be contained onsite as <br /> described above in Section 111, 5. Waste Containment and Disposal. <br /> Upon completion of the project,all drill holes and monitoring wells not required for <br /> future site operations will be abandoned as described below in Section IV Item 4. <br /> 9 <br /> l - <br />