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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 is <br />geophysical testing. Each hole will be filly cased to the bottom of the hole. Every effort <br />will be made to keep the holes along the same aligrunent, which is imperative for <br />accurate tomography. The T-1 hole will be drilled to the base of R-I Zone and cased to <br />the top of the R-1 Zone. There will be approximately 120 feet of open hole in the R-I <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 T1 hole at the R-1/L-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 well 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 MAT-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 1.3) 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-duality 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. Potentiometric <br />surface snaps 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 chnring drilling and hydrologic testing will be contained onsite as <br />described above in Section III, S. Waste Containment and Disposal. <br />Upon completion of the project, all drill holes and monitoring wells not required for <br />fixture site operations will be abandoned as described below in Section IV Item 4. <br />• <br />9