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High yield concrete will be placed in stages to approximately ZO feet above each water-bearing zone. "I'he <br />high yield mix is formulated to Flow through the liner perforations, grouting the pea gravel Fllled annulus of <br />the casing. The depth will be checked with a wireline to document successful placement of each seal. The <br />cement grout will be placed [o an elevation of 7253 which is about 20 fee[ above the highest water bearing <br />zone. The grout will be allowed to set up over night The depth will then be checked with a wireline to <br />document successful completion. Additional' cement grout will be placed, if needed, to provide a cement <br />grout seal to twenty feet above the highest water-bearing zone. <br />This will be followed by placement of pit run material to within ten feet of the surface. The cement surface <br />foundation of the shag collar will be removed to a depth of three feet. Concrete debris from the cement cap <br />and collar will be mixed with the pit-run material as the shag is filled to within ten feet of the surface. A <br />cement plug will then be set to within three (3) feel from the surface and allowed to set over night. The <br />remaining opening will be filled as the area is restored to approximate original contour. <br />A final abandonment report will be submitted following shag closure in accordance witlt Rule 4.07.3, and <br />that includes a) the calculated volume of the void space to be grouted following placement of the bentonite <br />seal; b) the actual volume of the grout used; c) the depth and interval of the bentonite seal and the final <br />depth and top of the cement plug; and d) the properties of the cement grout used including types of <br />additives and viscosity of the mix. <br />After completion of shag closure, the area of disturbance will be returned to approximate original contour, <br />[he salvaged topsoil uniformly spread over the surface, then mulched with straw and broadcast seeded with <br />rangeland seed mix at the rate of 25 pounds/acre. Figure 9 details final contour configuration and site <br />cross section. <br />h). Reclassification and Transfer of Ventilation Facilities to Industrial Use <br />Methane degasification wells, airshaRs, and open boreholes penetrating the underground workings will be <br />reclassified for industrial use. Stroud Oil Company, aka Apache Canyon Gas, LLC will obtain the <br />necessary permits tltought the Stale of Colorado, Oil and Gas Conservation Commission to develop <br />methane gas production wells at these locations. <br />Reclamation of these reclassified facilities will be in accordance with the Oil and Gas Conservation <br />Commission regulations. Reclamation bonding for these facilities will be filed with the Oil and Gas <br />Conservation Commission. When the appropriate bonds have been filed, and adequate proof of bonding <br />submitted to the Division of Minerals and Geology, Basin Resources will request bond release for these <br />facilities, and will only be responsible for these facilities to the extent required by Rule 4.15.10(2). <br />These facilities are listed in Exhibit 19, Bonding Schedule - TR-45, and in Exhibit 31, Industrial Land Use <br />Classification and Methane Gas Production Schedule, and Maps'IR45-I through "1'R45-5. <br />2.05.5 Post Mining Land Uses <br />The post mining land use which Basin proposes for the permit area at the Golden Eagle Mine shall consist <br />of pastureland, rangeland, ranchette and industrial use (natural gas production). 'I'bis is identical to the Pre- <br />mining land use as shown on Map 4, with the addition of industrial use. This is consistent with approved <br />land uses as determined by the Las Animas County Zoning Board. Detailed explanations of each of these <br />land uses which Basin plans to implement on reclaimed lands is located in Section 2.04.3 of this <br />application. <br />Reclamation of [he disturbed areas will provide a permanent cover of plant species which are consistent <br />with the planned post-mining land use. Achievement of the post mining land uses of rangeland, and <br />pastureland will be accomplished by the implementation of the grading and backfilling plan and the <br />revegetation plan reviewed in section 2.05.4 of this application. Upon approval of final reclamation and <br />full bond release, the land will be returned [o each of these land uses. <br />TR-55 2.05-29 (Revised 2!27/04) <br />