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TRAPPER MINING INC. <br />SAND AND GRAVEL SITE <br />Exhibit D - Sand and Grave! Operation Mininrt Plan <br />The Trapper Mining Inc. sand and gravel permit area encompasses approximately <br />83.3 acres and includes 3~,acres previously permitted under the limited impact <br />criteria of Rule 3, 2CCR407-1. The area includes the actual mining area, stock- <br />pile areas, drainage and sediment control, processing and loading areas, and <br />haulroads. <br />The actual extraction area is divided sequentially into six "mining areas" as <br />shown in Exhibit C. Table D-1 describes the depth, thickness and size of each <br />sub-area, the type of overburden to be removed and the approximate timing of the <br />mining sequence. The sequence may vary depending on future gravel requirements. <br />Mining Area 1 is the extraction area previously permitted (File No. M-84-168) <br />and will be depleted in approximately 1986. All topsoil and overburden material <br />has been removed from this area and mining commenced late in 1984. When mining <br />in this initial area nears completion, topsoil and overburden removal will begin <br />in Area 2. Similarly, as each sequential area nears depletion, topsoil and <br />overburden removal activities will begin in the next area. <br />Topsoil and overburden material will be removed and stockpiled with scrapers and <br />dozers. The product will be excavated with front-end loaders and trammed to the <br />processing areas where it will be fed directly into the crusher and stockpiled <br />or else stored in a pit-run sand and gravel stockpile. The location of the pro- <br />• cesaing area will be variable and as near to the extraction area as possible to <br />minimize the trauvsing distance. A list of equipment requirements is shown in <br />Table D-2. <br />All surface water runoff from the permit area will be routed through a sampling <br />point as shown in Exhibit C. Groundwater and surface water runoff into the <br />active mining area will be pumped from the pit into a sump to allow for <br />increased settling of sediment. Water from the sump will either be pumped or <br />channeled into a ditch which will route the effluent through our sampling <br />point. <br />Reclamation will be completed as described in Exhibit E. <br />• JMM/jb <br />8/30/85 <br />