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MINING PLAN EXHIBIT D (cont) <br /> necessary permits can be obtained to cover evaporation losses <br /> prior to mining deeper. This will be done by either installing a <br /> slurry wall or compacted liner to isolate the mining area from <br /> the groundwater table, depending on the technology that will best <br /> serve the conditions found. Albert Frei and Sons, Inc. will file <br /> a Technical Revision once it is determined what type of liner is <br /> most appropriate, and how much area will be lined will be deter- <br /> mined at that time . The Mining and Reclamation Plan Maps will be <br /> revised showing the location of liner and the end use for the <br /> area inside the liner. <br /> The south working face will continue to be worked to the south <br /> on a elevation that is 2 feet above the ground water level in <br /> this area until the mine limits have been reached. Site investi- <br /> gations indicate the groundwater elevation under the southern <br /> part of the mine is approximately 5394 . So the floor elevation <br /> will be mined at approximately 5396 across the property. <br /> As mining goes into the north side it may be possible to mining <br /> to the top of the shale since it may be higher then 5394 . If <br /> needed water for washing and dust control will be purchased or <br /> the operator may also obtain a deep well permit for a well to <br /> provide water for the mines needs . <br /> During mining all interior pit slopes will be into the mine so <br /> there will be no drainage off the affected land. This same slope <br /> management plan will prevent any offsite slides or other disrup- <br /> tions, and will also address some of the storm-water runoff <br /> questions arising from the Clean Water Act . Temporary isolation <br /> berms or ditches will be constructed within the setbacks around <br /> the mine to prevent stormwater from entering or leaving the site. <br /> No water will be discharged from the pit unless done so under a <br /> CPDS permit and all stormwater will be collected on the site and <br /> treated before being released if it comes in contact with dis- <br /> turbed areas as required. It will be held for less then 72 <br /> hours . <br /> The current permit contains an Inert Fill provisions approved in <br /> Technical Revision 01 that allows importation of fill material . <br /> If Albert Frei and Sons, Inc . , imports inert fill it will be used <br /> for reconstruction of slopes or backfilling on the mine floor. A <br /> copy of the Technical Revision and approval are provided in the <br /> appendix for your review. <br /> 6 <br />