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hoe. The mud pit shall be approximately 20 feet X 10 feet and 8 feet deep. The <br />acreage disturbed for the drill site will be approximately .23 acres. The site will be <br />occupied by drilling equipment for approximately six up to 12 days. <br />OS-LW22 <br />This site is located at the bottom of an inactive mine pit. The floor of the pit consists <br />of fine sandstone mixed with coal fines. The drill site shall be approximately 100 feet <br />square. A reserve pit shall be dug using aback-hoe. The mud pit shall be <br />approximately 20 feet X 10 feet and 8 feet deep. The acreage disturbed for the drill <br />site will be approximately .23 acres. The site will be occupied by drilling equipment <br />for approximately six up to 12 days. <br />Describe Exploration Activities: <br />At each of the drill sites described above, the topsoil, if present, will be removed <br />using aback-hoe blade and stock-piled at the end of the drill location. Drilling <br />equipment that will be moved onto the site include attack-mounted drill rig, a pipe <br />trailer, a water truck, a supply trailer/dog-house, and two pick-up trucks. The upper <br />reaches of the hole shall be drilled to an approximate diameter of 10 inches to a depth <br />that intersects bed rock (this includes drilling through spoil piles that may exist). <br />Steel casing will then be inserted into the hole to stabilize the surface material. The <br />hole will then be drilled using rotary methods to a depth approximately 20 feet above <br />the coal seam of interest. At that point, core drilling will commence to retrieve core <br />samples of the seams roof rock, coal seam and floor rock. The hole will be drilled to <br />a point approximately 50 feet below the lowest mineable coal seam. After <br />completion of the drilling the hole will be geophysically logged using truck-mounted <br />equipment. <br />During the drilling process, all drilling fluids shall be contained in the reserve pit. <br />After drilling and logging have been completed, the drill holes shall be abandoned in <br />accordance with Colorado State well abandonment procedures. This will include the <br />filling of the hole with approved well abandonment material to a point 10 feet below <br />the land surface. A cement plug will then be placed in the hole above the well <br />abandomnent material to the surface. A steel marker will be placed in the top of the <br />cement plug. After the reserve pit has been back-filled, topsoil (if present) shall be <br />spread back over the site and the soil along the access corridor will be disked or <br />ripped as needed and then seeded. Reclaimed areas will be seeded with Trapper's <br />approved rangeland mix (attached). <br />One exception to the well abandonment procedure is at drill site OS-LW 17. It is <br />intended to transform this well into a groundwater monitoring site. This will be done <br />after the drilling is complete by placing slotted 4"PVC casing through the zone <br />intended to be monitored. Solid casing shall extend from that point to the surface. <br />The annulus of the casing will be filled at the bottom with Colorado Silica Sand to a <br />point at the top of the slotted casing. Well abandonment material shall then be placed <br />