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The soil removed from the first year's mining will be stockpiled at the north end of the initial plant site, and <br />will remain in place for an extended period. Soil from subsequent years' mining will be used to reclaim areas <br />previously mined. The soil in the first year's area is expected to be thicker than that in years two to five, because of <br />the location at the small ravine. Soil depth is extremely variable, and initially, the area on which soil is replaced may <br />be smaller than the area stripped; this is expected to be made up as mining is done in the flatter areas of the site, or <br />when the original stockpile is used. Soil will not be removed from buffer areas, but will be removed at least ten feet <br />behind the planned final face of the excavation area. This will both protect in -place soil from erosion and provide for <br />material to create final slopes for reclamation. Prior to placement in stockpiles, soil may be screened to remove <br />cobbles for use as extracted material and improve soil quality. <br />As demand is expected to vary significantly from year to year and depth of the deposit also varies, mining <br />will also vary greatly during the life of the pit. For planning purposes only, assumptions for average mining are stated <br />below. <br />The first year, mining will be done on a face approximately 200 feet wide, for a depth of 450 feet (to the <br />eastern limit of the mining area). In the next four years, mining will be done along a face of 450 to 600 feet in width, <br />with areas of roughly 2 acres being mined at any given time, to produce an estimated 100,000 CY of raw material <br />per year. (Crushing and screening will reduce this to an estimated 70,000 CY of product (94,500 Tons dry) at <br />maximum expected production.) Excess overburden and unsuitable materials will be used to bring exterior edges to <br />the planned 2H:1V outer slope. <br />Access above the highwall to the stripped area will be via adjacent unmined areas. As much as possible, <br />loaders will remove material from the working face and feed directly into the processing plant. The plant site is <br />selected to allow the plant feed system to be located as close to the working face as feasible for each season. <br />Since portable plants will be used, the plant configuration may change each year. Based on production levels, <br />portable conveyors or trucks may also be used to haul from the working face to the plant. As much as possible, the <br />floor of the pit will be left at final grade as mining progresses. Berms and shallow swales may be placed for storm <br />water and erosion control, but these generally will be part of final reclamation. If wash water sediment ponds are <br />necessary, these will be located as much as possible in the plant area, or in areas being reclaimed. No ground <br />water is expected to be exposed in mining, due to the location on the high bench, forty or more feet above the river <br />level and without significant catchments upslope. <br />TABLE D -1. SUMMARY OF LANDS <br />Area Description /Activity Acres Affected Acres Period Impacted Remarks <br />Access W of river 2.96 0.42Life of Pit Affected area permanent <br />B Buffer zones 37.07 0.41 Life of Pit Affected area permanent <br />C Mining area 62.62 62.62See schedule Some areas permanent <br />102.65 <br />ASSUMPTIONS: <br />1. Annual production will be variable, but is assumed excavation is maximum 100,000 CY per year (cypy), <br />average 65,000 cypy, to produce maximum 70,000 cypy average 45,500 cypy, assuming an average of <br />30% removed by screening and washing. <br />2. Screenings and wash fines will be used for backfill and attaining final grade. <br />3. Soil ranges from 0.25 to 2 foot in depth, and averages 6 inches. Soil, including subsoil suitable for rooting <br />zone use will be salvaged and stored or used in reclamation as work progresses. <br />4. Overburden (clay and loam) varies significantly, but is assumed to occupy about 30% of the profile, or 8-10 <br />feet out of an average 30 -foot to be mined, and is expected to be found throughout the profile, in lenses of <br />alluvial terrace deposits. <br />5. Sand and gravel deposit ranges from 20 to 60 feet in depth, expected to be thinner on the east and north <br />sides of the site and deeper on the bench immediately above the river. <br />C &J Gravel Products, Inc. Page 15 01 JAN 2015 <br />Application for Permit: Two Rivers Pit M -2015- C &J- TRP -V5 -001 <br />