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<br /> <br />EXSIBIT D <br />MIIiI11G PI.iAN <br />Alpine Rock Company will erect a portable <br />at the northwest end of the site. They <br />gravel and haul finished product from the <br />gravel processing plant <br />will crush and screen <br />site. <br />The grave] supply exists in placer tailings stockpiles created by <br />previous gold/silver mining. Gravel stockpiles vary in height but <br />are approximately five to 15 feet high. The stockpiles will be <br />removed to a depth that ties in with surrounding grades. The <br />material ranges from cobbles to small gravel. There will be no <br />excavation of material below the original ground level. Work will <br />occur in previously disturbed areas along the Swan River. No <br />mining activity will occur in the river or associated wetlands. <br />Gravel will be moved by loader and trucks from the immediate <br />stockpile area to the plant site. Processed material will be <br />hauled off-site as the market dictates. <br />Bulk fuel will be stored in a tank on-site outside the 100 year <br />floodway. The majority of flood flows will be contained within the <br />river channel. <br />No diversions or impoundments will be needed. Existing roads will <br />be used for all travel to and from plant sites. <br />After one stockpile area has been exhausted, the area will be <br />graded. The plant site will then be moved to process gravel in the <br />next area. The site will be mined in 17 Phases allowing one to two <br />years per phase for a total of approximately 20 years. Market <br />demand will dictate time required for extraction. <br />Mining will progress in the directions shown on Exhibit C. Mine <br />areas will vary in size from five to ten acres. <br />Major Disturbance <br />The entire site is in a state of "major disturbance" due to the <br />tailings stockpiles in the floodplain of the Swan River. Mining <br />the gravel stockpiles will not create major disturbance. <br />Moderate Disturbance <br />Plant Site and Product Stockpiles 2 acres <br />Internal Haul Roads 2.5 acres <br />Mine Area 10 acres <br />M'n r.Disturbance <br />None <br />'!O'P~I. DISTIIRei\IICE 14.5 11CRES <br />D-1 <br />