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Ivlr. Steve Shuey . <br />Page 2 <br />March 26, 2001 <br />the 2:1 slope must steepen locally to make this transition. The steeper slopes <br />in excess of 1.8:1 above the access road to the Raymond Pit appear to be <br />stable as BAI has not seen or heard of any slope failures in that area since the <br />road was built. This transition zone was approved in the original permit <br />application. <br />4. Item 4 -Flagging 12" DBH Trees -The operator will flag the approximate <br />location of the bench and flag any 12" DBH trees in the bench area. DMG will <br />be notified when this is completed so an inspection can be made to discuss <br />which trees are eligible for removal and replacement. <br />BAI has also contacted Mr. Kevin Wright, Colorado Department of Wildlife <br />and the Mt. Sopris Soil Conservation District. Mr. Dennis Davidson. Natural <br />Resource Conservation Service, is the contact for the Mt. Sopris Soil <br />Conservation Service. A copy of the Mine Bench Road plan with the response <br />letter has been forwarded to both agencies. Kevin Wright indicated that he <br />would make a site visit to evaluate the proposed mitigation plan for 12" DBH <br />trees removed. Dennis Davidson indicated that he did not have a problem with <br />the proposed mitigation and would talk with Mt. Sopris Soil Conservation <br />District Board Members to see if they would concur with this opinion. The <br />responses from both agencies will be forwarded to your office when they aze <br />received. <br />5. Item 5 -Estimate of disturbed area requiring reclamation -The approved <br />reclamation plan contains two scenarios 1. sufficient topsoil depth would be <br />encountered that it was feasible to salvage topsoil for reclamation and 2: the <br />post nursing slope would be rock. In the latter case, the only reclamation <br />required was grading of the slopes to a 2:1 slope. In the former case, the <br />topsoil would be spread to a depth of 6" starting in the staging area until the <br />topsoil ran out. The topsoiled areas would then be seeded with the approved <br />seed mix. <br />Based on our observations in the field topsoil has not been encountered in <br />sufficient depth to allow topsoil salvage, it has only been encountered in the <br />very limited amounts in the staging area. The remaining disturbed areas to the <br />west have not encountered topsoil to date. Using this field data, the only area <br />where topsoil has been encountered is approximately 0.20 acres or 5.26% of <br />the disturbed area. The remaining portion ofthe site would be reclaimed by <br />grading the highwalls to the 2:1 slopes without any seeding requirements since <br />these slopes are assumed to be rock only. <br />Based on the attached Table 3, the estimated length of highwall open during a <br />1-1/2 year period is 347 feet. This was calculated using an average of 3.24 <br />product tons per feet of highwall and 750 tons per year for 1.5 years or 1125 <br />tons. The amount of material to grade the highwall for the 1.5 year period to <br />2:1 is 1,662 cu. yd (See attached Table 4). <br />