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6 Mine Phase 1 (Approximately 13.7 acres). Place reject fines in pit for 27 <br /> slope backfilling. Backfill slopes to 3H:1 V or milder. <br />7 Remove contaminated overburden from Phase 2 and place in offsite 0.0 <br /> treatment area. This can be done while Phase 1 is being mined. <br />8 Allow water to fill Phase 1 lake and use as sediment pond. 0.5 <br />9 Mine Phase 2 (Approximately 10.9 acres). Place reject fines in pit for 21 <br /> slope backfilling. Backfill slopes to 3H:1 V or milder. Leave undulations. <br />10 Remove available topsoil from the Phase 3 mining azea and backfill on 1.0 <br /> regraded slopes of Phase 2 and Phase 1 above the lake surface. <br />11 Remove initial 1/3 of the overburden and place in Phase 2 azea for final 1.0 <br /> backfilling. Allow Phase 21ake to fill. <br />12 Mine Phase 3 (Approximately 15.1 acres). Use reject fines from process- 30.0 <br /> ing to fill Trench #1. Use reject fines to backfill the slopes of the final <br /> Phase to 3H:1 V or milder. <br />13 Fill Trench #2 with material stockpiled alongside the trench. 0.5 <br />14 Reseed and mulch Phase 3 lake slope azea and upper dryland azea. 0.25 <br /> Total 84.75 <br />5. ROAD ACCESS <br />Primary access to the property is US Highway 50 which provides excellent access to Interstate 70 <br />interchange at Fruita. The haul route from the pit intersects US Highway 50 at an existing <br />channelized intersection at the point that the N-S section line between Sections 11 and 12 meets the <br />Highway. This is the graveled portion of 15 Road proceeding south to the permit azea. Map C-1 <br />indicates the location of the haul route from Highway 50 to the permit azea. This route follows ex- <br />fisting roads established as part of the previous refinery activities. hnprovements are limited to <br />maintenance of the gravel surfaces. Given the maximum production of the site coupled with avail- <br />able trucks, it is estimated that a peak of 15 trips per hour will utilize the haul route at maximum <br />production. Two types of trucks will be used; tandem axle trucks with a capacity of 14 tons and 24 <br />ton capacity belly dump trucks. It is expected that 90% of the trucks moving the products off site <br />Gilsonite Pit 9/03 17 <br />