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MINING PLAN <br />established roadways. In the event temporary access roads must be created that cross a buried line, <br />confirmation that driving over the pipeline is safe will be obtained prior to using the access route. <br />Safety with respect to crossing under overhead lines will always be observed. SoiUoverburden <br />stockpiles shall not be placed on top of buried pipelines. <br />Bomb target buffers: <br />REQUIREMENT: The mining plan maps show a 500 foot buffer around the three nearby <br />bomb target areas. These areas are excluded from mining until such time as they are cleared of <br />ordnance or it is considered safe to mine in those areas. The lease already excludes all the bomb target <br />areas. If those target boundaries change as a result of new information gathered in the clean up process <br />being conducted by others then the new target boundaries will be included and suitable adjustments <br />made in the plan, as needed. <br />Overview of Mine Plan <br />General direction of mining: <br />Upland Mining - Mining in upland areas will begin at the higher elevations and will <br />generally proceed downslope toward the drainages. The reason for doing this is to limit the <br />amount of sediment outwash from the disturbed areas. By maintaining berms and other blockages to <br />water outflow on the downhill side of the operation, sediment loads into the drainages can be reduced <br />inexpensively. Futhermore, by reclaiming upslope from the mining, sheet wash from newly reclaimed <br />areas can often be controlled by the mining area itself. Thus, by the time the last areas are mined, <br />much of the land upslope from the most recent mining should be in a more stable and reclaimed <br />condition so sediment from those areas will be reduced. <br />Lowland Mining - In lowland areas reining will generally progress from the lower <br />elevation portions of the lowland location toward the higher elevation areas. The lowland mining <br />is that mining that will occur in the bottoms of major valleys and on the outwash plains from those <br />valleys. In these areas, erosion from the disturbed areas and its accompanying sediment loads is of <br />much less concem due to the gentle slope of the land. The concerns in the lowlands are different from <br />those in the uplands. In the uplands, even small storms can create large amounts of runoff due to the <br />steeper slopes. In the lowlands, small storms are often of little consequence because of the gradual <br />grade, but large storms are of greater concern. <br />Heavy flows down the drainages can create severe erosion. If the reclamation was upslope <br />from the mining areas, then strong storms might well destroy the reclamation and deposit all of that <br />Coal Creek Sand Resource Amendment 3 (2005) - M-1988-044 Exhibit D Page 19 <br />