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THE INFORMATION ON THIS PAGE DUES NOT NEED TO BE HELD CONFIDENTIAL <br />Exhibit C - AMSO, LLC Notice of Intent Supplemental Information <br />0 Proposed Drill Pads <br />Three drill pads (TP, HB, and MWP-2) will be constructed at the locations shown in <br />Figures A.1 and A.2 (Exhibit A) to accommodate drilling and testing operations. A third <br />existing drill pad (MWP-1) will also be used to support testing operations; however, no <br />additional land will be disturbed or new wells will be installed on the pad under this NOL <br />Drill Pad TP will be constructed immediately west of the existing BLM road in the <br />central portion of the project site. The pad will be used to construct drill holes designed <br />to characterize geologic and hydrogeologic conditions above, within, and below the <br />target process testing interval. The target process testing interval corresponds to the <br />illite-rich zone, which based on existing site information, is present in the lower Green <br />River Formation. <br />Drill Pad TP will be constructed as shown in Drawings D. I and D.2 (Exhibit D). The <br />disturbed area for the Drill Pad TP will be approximately 4.6 acres, including a 250 feet <br />by 425 feet pad and associated soil stock pile. All fill areas will be properly compacted <br />to minimize the potential for subsidence or slope failure. To reduce erosion and soil loss, <br />ditches and berms will be constructed to divert storrnwater away from the pad. Silt <br />fencing and/or other sediment retention measures will be used to reduce sediment <br />migration from the disturbed area. A lockable gate per BLM specifications will be <br />installed at the entrance to the pad to prevent unauthorized access to the pad. <br />Drill Pad HB will be constructed as shown in Drawings D.3 and DA (Exhibit D). The <br />disturbed area for the Drill Pad TP will be approximately 3.4 acres, including a 195 feet <br />by 385 feet pad and associated soil stockpile. All fill areas will be properly compacted to <br />minimize the potential for subsidence or slope failure. To reduce erosion and soil loss, <br />ditches and berms will be constructed to divert stoimwater away from the pad. Silt <br />fencing and/or other sediment retention measures will be used to reduce sediment <br />migration from the disturbed area.. A lockable gate per BLM specifications will be <br />installed at the entrance to the pad to prevent unauthorized access to the pad. <br />Drill Pad MWP-2 will be constructed as shown in Drawings DA and D.5 (Exhibit D). <br />The disturbed area for the MWP-2 Pad will be approximately 1.9 acres, includmg a 180 <br />feet by 180 feet pad and associated soil stockpile. All fill areas will be properly <br />compacted to minimize the potential for subsidence or slope failure. To reduce erosion <br />and soil loss, ditches and berms will be constructed to divert stonmwater away from the <br />pad. Silt fencing and/or other sediment retention measures will be used to reduce <br />sediment migration from the disturbed area. A lockable gate per BLM specifications will <br />be installed at the entrance to the pad to prevent unauthorized access to the pad. <br />A 12-foot deep containment pit measuring 30 feet wide by at least 150 feet long will be <br />constructed on each of the three new drill pads. Pits will be placed to avoid fill areas. <br />Where fill area cannot be avoided, at least 50 percent of the pit will be constructed below <br />the original ground level As required per lease stipulations, each pit will be lazed, fenced <br />• on all four sides with net-wire, and covered with plastic barrier to exclude both large and <br />4