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using air until such time that a water medium will be necessary. Auxiliary equipment will include <br />one (1) D-7 rated dozer, pipe truck, personnel vehicles, and a geophysical logging truck. <br />Drill holes on some occasions will require new road work. Necessary agreements from surface <br />owners have been or will be obtained prior to disturbance. Topsoil from pioneer road work, mud <br />pits, and construction of drill pads will be stockpiled for reclamation. Average size of disturbances <br />aze: drill pads 60 feet by six (6) feet, mud pits 12 feet by six (6) feet by five (5) feet, and <br />roadsapproximately 14 feet wide. <br />Drill holes will be sealed with a combination of cutting, bentonite compounds and Portland cement <br />slung. The sealant will be placed from bottom to within ten (10) feet of the surface. Holes which <br />have multiple aquifers or bedrock aquifers will be sealed using a Portland and/or bentonite plug <br />extending 50 feet above and below the water bearing zone in accordance with 43 CFR 3484.1(a)(1). <br />All surface casing will be removed and/or cut off three (3) feet below the surface. An approved <br />expandable plug will be placed ten (10) feet below the surface and an approved cement slurry will <br />be placed to within three (3) feet of the surface. <br />Development drill holes may be temporarily secured for possible re-entry or future use prior to final <br />abandonment. In such instances, drill holes will either be cased or sealed to prevent possible aquifer <br />communication as described above. Development holes will be surface cased and cemented or <br />grouted in all instances and tightly capped to prevent unauthorized entry or surface or subsurface <br />water in-flow. Protective barricades or fencing will be installed to prevent damage to the portion <br />of the casing protruding above the ground surface. If development drill holes are not subsequently <br />used for mine development purposes, they will be abandoned in accordance with the standazd <br />procedure previously described. <br />Reclamation costs are estimated on an average of $1,350.00 dozer fee plus $950.00 for mulched-seed <br />mix per acre of disturbance. <br />Seed Mix For Drill Sites <br />Western Wheat Grass <br />Intermediate Wheat Grass <br />Indian Rice Grass <br />8.1 PLS/ac <br />7.2 PLS/ac <br />2.7 PLS/ac <br />All seed to be broadcast, covered by a straw mulch then crimped by dozer. Proof of compliance <br />will be provided within 60 days after abandoning a drill hole, specific drilling program approved <br />by the Division, or when requested by the Division, the operator will submit a report detailing <br />the following information: <br />TR-94-25 2.05.3-21Ra Revised 10/21/94 <br />