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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 /> • penetrate only the upper aquifer system. As discussed in Item 6 above,casing cemented <br /> in place or packer seals will'be used to prevent mixing of waters between the upper and <br /> lower aquifers. <br /> Section IV OPERATION AND RECLAMATION MEASURES <br /> 2. Provide a description of the native vegetation of the area to be disturbed, including tree, <br /> shrub, and grass communities of the area. <br /> The project area encompasses two vegetation types:Pinyon-Juniper woodland <br /> (approximately 25 percent)and Rolling Loam prairie(approximately 75 percent). The <br /> Pinyon-Juniper community consists of Pinyon pine, Utah juniper,Indian rice:grass, <br /> beardless wheatgrass,mountain mahogany,prairie junegrass,with scattered sagebrush <br /> and serviceberry. The Rolling Loam community consists of:Western wheatgprass,prairie <br /> junegrass,big sagebrush,Douglas rabbitbrush,streambank wheatgrass,and <br /> needleandthread. <br /> Roads and drill pads will be located so as to disturb the least amount of Pinyon-Juniper <br /> woodland community possible. <br /> 3. Describe the estimated topsoil depth and how topsoil will be salvaged, stockpiled and <br /> redistributed for the re-establishment of vegetation. Specify approximate topsoil <br /> • redistribution depth.: <br /> Topsoil in the project area is 12 inches or less in depth. During access road and drilling <br /> pad construction,woody vegetation within disturbed areas will be cleared and will either <br /> be placed in windrows along the downslope edges of the disturbed areas,to reduce the <br /> velocity of runoff and assist in trapping sediment,or will be piled and removed from the <br /> site at the completion of the project. Topsoil within disturbed areas will be stripped to a <br /> depth of 6 to 12 inches,depending on its depth,and placed in piles adjacent to the <br /> roadway or drilling pad. All'topsoil will be segregated from,and stored in stockpiles <br /> separate from,any subsoil that is removed during grading operations. Topsoil stockpiles <br /> will be protected from degradation due to contamination,compaction,and from wind and <br /> water erosion. Topsoil stockpiles will also be seeded with certified weed-free seed <br /> mixtures and covered with geotextile fabrics. Temporary erosion and sediment controls <br /> will be installed around the downgradient perimeter of all soil stockpiles prior to <br /> placement of stockpiles and will be maintained until the area has been fully reclaimed. <br /> During reclamation,disturbed)areas will be regraded,using stockpiled subsoil:.where <br /> necessary,to create a subgrade that conforms,as nearly as practicable,to the pre- <br /> construction surface contours. Replaced subsoil will be compacted prior to placement of <br /> topsoil. To assure the stability of the replaced topsoil,the surface of the subgrade will be <br /> roughened prior to replacingthe topsoil. Stockpiled topsoil will be returned to pre- <br /> construction depths and locations to a minimum depth of six inches,and the area will be <br /> reseeded with approved seed,mixes,as described in Item 7,below. In compacted areas, <br /> soils will be loosened using a tractor-pulled ripper or similar device,as necessary. <br /> 27 <br />