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~, <br />drilling. This drill site is in a different location than was shown in the original NOI <br />application. The condition ofthe site is as follows: <br />OS-I,W-32 <br />Drill site OS-LW-32 is located in an unmined azea adjacent to an existing road. The <br />drill site will be built by removing the topsoil and storing it on the edge of the drill <br />site. The size of this site will be approximately 100 feet squaze. The total land <br />disturbed by this drill site will be approximately 0.23 acre. A reserve pit will be dug <br />to contain drilling fluids that aze produced or used during the drilling process. <br />Drilling equipment that will be moved onto the site will be attack-mounted drill rig, <br />pipe trailer, water truck, supply trailer/dog-house, and two pick-up trucks. The upper <br />portion of the drill hole will be drilled using rotary methods and the lower 260 feet of <br />the hole will be core drilled. After the hole has been drilled, it will be geophysically <br />logged. During the drilling process, all drilling fluids shall be contained in the <br />reserve pit. <br />5. Describe Exploration Activities: <br />At the drill site described above, topsoil will be removed using a backhoe blade and <br />stockpiled at the end ofthe drill location. Drilling equipment that will be moved onto <br />the site will be attack-mounted drill rig, pipe trailer, water truck, supply trailer/dog- <br />house, and two pick-up trucks. The upper reaches ofthe hole shall be drilled to an <br />approximate diameter of 10 inches to a depth that intersects bedrock (this includes <br />drilling through spoil piles that may exist). Steel casing will then be inserted into the <br />hole to stabilize the surface material. The hole will then be drilled using rotary <br />methods to a depth approximately 20 feet above the coal seam of interest. At that <br />point, core drilling will commence to retrieve core samples ofthe seams roofrock, <br />coal seam and floor rock. The hole will be drilled to a point approximately 50 feet <br />below the lowest mineable coal seam After completion of the drilling the hole will <br />be geophysically logged using truck-mounted equipment. During the drilling process, <br />all drilling fluids shall be contained in the reserve pit. <br />After drilling and logging has been completed, the drill hole shall be abandoned in <br />acwrdance 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 />abandonment material to the surface. A steel mazker will be placed in the top of the <br />cement plug. After the reserve pit has been back-filled, topsoil shall be spread back <br />over the site and the ground reseeded using the seed mixture described in the original <br />NOI-C:K-189-006 application. <br />