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Seclzon - 2.05.4 <br />near-surface materials during construction of the Lower Hubbard Creek portal bench. The surficial <br />materials exposed following regrading operations included mixed soils and weathered surficial and <br />near-surface materials. These materials were determined to be suitable as revegetadon growth <br />medium and have been effective to date in supporting effective vegetative reestablishment. <br />Revegetation - In accordance with an agreement with the DMG, a vegetation study was conducted <br />for the Bear Creek and Hubbard Creek disturbance areas and adjacent undisturbed areas during the <br />summer of 1981. The results of this study aze summarized in Exhibit 2.04-E6, Vegetation <br />Information, and graphically illustrated on Map 2.04-M8, Regional Vegetation. A revegetadon plan, <br />based on the study results, is included in the vegetation study report in Exhibit 2.05-E6. Disturbed <br />and reclaimed azeas were prepazed and reseeded in 1995-1996 consistent with the approved <br />revegetadon plan. <br />Reclamation Schedule -The following summazizes the timing of reclamation activities that have or <br />will occur for the Lower Hubbard Creek facilities area. <br />1994 -The above ground facilities, including the concrete foundations, were demolished and <br />resulting demolition debris either removed from the site for disposal or buried in the fill. <br />Excavated material was placed against the limited steep slope areas. <br />1995-1996 - Fina] grading was completed and the area was prepared for seeding, fertilized, <br />and seeded in accordance with the revegetadon plan outlined in Exhibit 2.04-E6, Vegetation <br />Information. <br />Reclamation Costs - A summary of estimated costs for complete reclamation of the Lower Hubbard <br />Creek facilities area is provided in Exhibit 2.03-E3, Insurance and Bonding Information. <br />Upper Hubbard Creek Atea Somerset Mine) -The actual constructed Upper Hubbard Creek <br />facilities included the facilities pad, substation, powerline, sedimentation pond, and ground water <br />monitoring well H-10. A ventilation installation (shaft and fan installation) is approved for this site <br />and referred to separately as the Hubbard Creek Fansite.. The Upper Hubbazd Creek facilities area <br />may be utilized in the future in conjunction with mining in the Elk Creek Mine. The area has been <br />stabilized but not fully reclaimed and does not represent an environmental hazard. <br />Demolition and Final Grading -The limited above-ground structures were dismantled and <br />removed, leaving only the substation foundation pad, powerline, and ground water monitoring well <br />H-10. The disturbed area is stable in its present configuration and surface materials have been <br />stabilized to minimize erosion by planting a temporary vegetative coven In order to protect the site <br />and minimize sedimentation until final reclamation is completed, drainage and sediment control is <br />provided by a small sedimentation pond for the pad area, diversion ditches that intercept runoff and <br />direct i[ azound the disturbed area, and a small area exemption and silt fence for the pad outslope and <br />soil stockpile. <br />At such rime as this area is no longer needed to support ongoing or future mining operations, the site <br />will be reclaimed to provide a trailhead azea for the U.S. Forest Service. The portion of the pad <br />located on OMI property will be reconfigured as pazt ofthe Hubbard Creek road to provide access to <br />the remainder of the pad area, which is on public land. The disturbed azea will be graded to the final <br />configuration shown on by the Hubbard Creek reclamation plan drawings in Exhibit 2.05-E5, <br />Reclamation Details. The graded cut and fill material will be compacted as necessary by grading <br />equipment to establish stable final slopes. The portion of the pad that is on public land will be <br />retained to provide a pazking and trailhead azea for access to surrounding public ]ands. A letter from <br />the U.S. Forest Service requesting and approving this postmining use is included in Exhibit 2.05-E5, <br />Reclamation Details. As part of the site reclamation agreement and in considexadon of existing <br />natural geologic instability along the access road and in the general azea, the U.S. Forest Service will <br />post landslide-warning signs. <br />TR-49 2.05-SS Revised February 2005 <br />