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EXHIBIT C MINING PLAN <br /> Mining will commence in 1999 as soon as all permits are in hand and may continue for <br /> long as ten years. The mine plan calls for the removal of the waste dump material with a <br /> front end loader and processing on site. Portable screens and crusher, if necessary, will <br /> be used on site to process the waste dump material for use as a road material. Road <br /> material is the primary and only product to be mined at this site. The gravel product will <br /> then be stockpiled on site prior to loading into county trucks for use on nearby roadways. <br /> At this time, it is planned to sub-contract the gravel sizing and stockpiling in 30,000 ton <br /> increments for annual usage on county roads. The first parcel described in the legal will <br /> be processed first. The 3.4 acre parcel may contain up to 180,000 tons of gravel. During <br /> the first 30000 ton increment mined, it may necessary to utilize the upper <br /> parcel for stockpiling cif material. As the pit face progresses east to west, the finish <br /> material will be stockpiled next to the working face. As the waste material is processed, <br /> a 2% grade will be maintained from the pit entrance to the working face to minimize any <br /> sediment being carried out of the pit area during rain events or snow melt. There is no <br /> soil horizon developed at the surface of waste dumps, although trees and shrubs will have <br /> to be removed prior to excavation. As mining of waste materials progresses to the <br /> original surface(s), any organic material or soil horizons will be left in place or stockpiled <br /> for reclamation at the end of mining. The location of topsoil or organic matter stockpiles, <br /> if encountered, is shown on the Mining Plan Map. Along the contact will the natural 8� <br /> slopes, the waste dump material will be graded to no steever than 3:.1.,HNC,and stabilized <br /> via contour rilling to minimize erosion of the newly expose ump material and(possibly) <br /> original soils. Along the toe of the existing unstable waste dump in proximity to Howard <br /> Creek, it ay_necessary to utilize back-hoes or excavators to remove-waste-dump. <br /> material with minimum distur ante to_egetation along Howard Creek �ially the <br /> _ivelLdey loped stands o Cottonwogds. During mining operations, afour foot tall berm <br /> of waste materials will be left along Howard Creek to maintain isolation f Howard <br /> 6�_Creek flows into the m�mng area an restrict water from the mining area into <br /> Howard Creek . After mining, a oor an slopes of the mining area will be seeded with <br /> a mixture of native grasses, shrubs, and forbes. <br /> The affected land boundaries were carefully located to keep mining operations out of any <br /> streams, springs, or Howard Creek proper. The exposed face(s)of the waste dumps do <br /> not appear wet or show evidence of seeps or water flow. Where water flows do cross the <br /> waste dump materials (west of the permit boundaries), the mining operator has elected to <br /> not disturb that area and terminate mining in that direction. (Western limit of Pit #1). In <br /> the event that mining operations intersect a flow of water or spring that was covered by <br /> the waste dump construction and not visible at this point in time, a water quality control <br /> Ian willIx followed. The goal of the plan will be to isolate, decant, and return t to water <br /> flow back to Howar d Creek drainage in a manner that will minimize water quality } i <br /> impacts. This may include the construction of small sediment ponds, berms, and/or <br /> ditches to maintain good water quality in the drainage during and after gravel extraction�� <br /> operations. Under no circumstances will equipment be permitted to operate or travel <br /> 5 <br />