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<br />MINING PLAN AMENDMENT <br /> <br />r EXHIBIT D <br />This operation involves open pit mining in a gold placer deposit. This site has been permitted <br />and mined for placer gold since 1984. Since then mining activity has been sporadic. <br />The last permit amendment was in 1991 and include the addition of nine mining phases (see <br />Exhibit C -Mine Plan Map from Revision No. AM-O1). The 1991 amendment also reduced the <br />size of the pit to a maximum of 2.1 acres at any given time. The maximum affected azea <br />remained the same (29 acres). However, since that time, a seven acre pit has been excavated and <br />the proposed maximum affected acreage was exceeded. <br />The purpose of this amendment is to reduce and maintain the affected land at or below 29 acres, <br />revise the mining azea, and increase the maximum pit size and depth of mining. Reduction of the <br />affected land is discussed further in Exhibit E. <br />The amended mining plan no longer includes nine mining phases. The new mining plan will <br />focus on mining 27 acres on the south end of the property (see amended Exhibit C enclosed with <br />this application). Mining will progress south from the location of the existing pit and is expected <br />to take 10 yeazs to complete. The size of the pit will be increased to a maximum of eight acres <br />and mined to a maximum depth of 100 feet. <br />The current pit contains highwalls in access of 70 feet with very little benching. As mining <br />progresses to the south, sixty foot benches will be left in place at every twenh~-five foot depth <br />mined. While mining, the tails material greater than 3/8 inch in diameter will be used to backfill <br />the north end of the pit. <br />The existing operation has an impoundment to hold all tailings less than 3/8 inch in diameter. <br />The operator will continue to discazd fines in the tailings facility for the next two to three years. <br />This will require raising the impoundment another seven feet. Once the tailing impoundment is <br />no longer needed, the fines will also be transported to the pit to backfill. <br />All other aspects of this operation will remain the same. <br />D-1 <br />