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<br />• Mr. Jo nn Hinton -2- June 27, 1983 <br />Further south in the same "G" labelled area, west of the shop, there are <br />several gullies about two feet deep. Water appears to have broken through <br />contour furrows. The gullies have eroded recently and are not considered <br />stabilized. <br />Gully formation is also evident in Center Ridge on the west side and on the <br />east side above the old haul road. These gullies are not as large as the one <br />observed above, but they are also in "G" labelled areas and should, therefore, <br />be stabilized. (P & M is to repair the gullies in west Center Ridge this <br />summer.) <br />There is an area along the far east side of Center Ridge above the draw where <br />slumping has occurred. Additional cracks were observed above the slump which <br />will probably result in more slumping. This area is not considered stable, <br />but, at this point, the cause of slumping is unknown. If the slumping is due <br />to the mining operation, P & M could be held responsible. However, it may be <br />a natural phenomenon. To determine if it is mining-related, a map showing the <br />pit orientation is necessary and whether there was a low spot adjacent to the <br />slump area. <br />• The above areas have experienced recent erosion or slumping and, therefore, <br />these surface areas are not considered stabilized to control erosion. These <br />areas will have to be stabilized. For the first two erosion gullies <br />mentioned, P & M may want to consider establishing permanent drainage channels <br />that blend in with the surrounding topography and the undisturbed drainage <br />below. Rock cneck dams may be appropriate to use to slow the flow down. <br />A plan for gully repair has been proposed for the west side of Center Ridge. <br />The same plan would be acceptable for the east side of Center Ridge. The <br />cause of slumping on the east side of Center Ridge will have to be determined <br />and, if it is amining-related problem, the area must be stabilized. <br />The revegetation on all lands I inspected appeared to be established, <br />including South of Shop and Center Ridge. West Ridge was mined prior to any <br />reclamation laws, but P & M has voluntarily seeded it. Therefore, in West <br />Ridge, there are no revegetation requirements. For all revegetated areas, the <br />Division requests quantitative cover and productivity data. This data is <br />necessary to verify the revegetation success. A species list must also be <br />included. It would also be interesting to know what the woody plant density <br />is on the reclaimed areas, but this is not required. The quantitative <br />vegetation data should be collected by the areas shown on Exhibit 1, and dates <br />of planting (if known) should be stated. <br />• <br />