Laserfiche WebLink
UPLAND GRAVEL PIT NO. 3 <br />EXHIBIT D <br />MINING PLAN <br />6.) MINE PLAN: <br />The (112) permit extraction operation will be within an excavation limit boundary, which <br />contain 42.1 acres of land. An additional 2.5 acres shall be occupied by the improved <br />gravel haul road outside the excavation limit boundary. <br />A minimum of 30 foot set-backs from adjoining property lines and 1:1 slopes from the <br />excavation limits will be maintained. <br />The mine plan anticipates removal of the construction materials down to the Mancos <br />Shale contact line. Top soil and unmarketable material will be laid back over the <br />disturbed area at a maximum of 3:1 slope and re-seeded with the exception of the 3.0+ <br />acre processing, stock piles and office area which will remain un-reclaimed until the end <br />of the pit life. <br />All the PHASES contain commercially viable alluvia! deposits of sand and gravel <br />material originating from and along ancient stream beds overlying Mancos shale <br />deposits. <br />Life expectancy of the pit is 20 to 30 years based on production of 40,000 - 60,000 <br />Ton/year. For purposes of the Mining Plan and Reclamation Plan annual yield of 60,000 <br />ton shall continue for 22 years and reclamation shall continue for an additional 2 years. <br />Mining shall disturb an estimated 1,325,000 cubic yards of material consisting of 7% <br />topsoil, 23% overburden and 70% gravel. Based on the six (ti) test pits, the deposit is <br />expected to average 22 feet thick and consists of top soil 1-2 feet thick, overburden of <br />(white /3< yellow dirt) 3 - 5 feet thick -Sand and gravel (1"-8" aggregate) deposit 14 -18 <br />feet thick. <br />Waste products in varying amounts from the crusher will be dispersed along with <br />overburden during reclamation. <br />The mining plan has been laid out (See Exhibit C) in eleven (11) Phases of two year <br />duration. Each year has been divided into approximate two acre Blocks to clearly <br />identify the mining and reclamation activity. For example, topsoil from Block 5 is placed <br />on Block 3 and re-vegetated. Overburden from Block 5 is placed on Block 4 and shaped <br />to maximum 3:1 slopes. All gravel from Block 5 is mined out except for access road to <br />future Blocks. Block 6 topsoil is placed on Block 4 and re-vegetated -and so on. <br />The gravel and overburden shall be removed by the use of track excavators and wheel <br />loaders to the perimeter of the excavation limits determined by BLM and established by <br />survey. <br />No more than 6 acres excavation area and 3 acres processing/ stockpile area will be un- <br />reclaimed at any one time. Therefore, bonding of 11.5 acres is expected to cover the <br />excavation area, processing site and haul road. Replacement and re-vegetation of top <br />soil shall be in 2 acre intervals within 6 months of completion of excavation and shall be <br />guaranteed for three years or until firmly established. <br />2 <br />