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1 • E~IBIT D (Cont'd) <br />' or properly buried during the refill and grading process. <br />Smaller numbers of trees in Areas 2 and 3 will be handled in <br />the same manner, <br />The damp condition of these operations limit periods of <br />extreme dryness when fugitive dust might become a problem. <br />' Valco's operating policy is to cease operations when high <br />' winds might cause dust problems, The Department of Health <br />has never required an emission control permit. <br />V'alco knows of no well, spring or other water facility <br />that will be affected by the dewatering program during the <br />' mining stages (see Exhibit G). The operator's intention is <br />to minimize disturbances to the prevailing hydrologic balance <br />1 of the affected land and of the surrounding area and to the <br />' quality and quantity of water in surface and ground water <br />systems both during and after the mining operation. <br />' Valco believes it is in compliance with federal and state <br />laws and regulations governing water and water rights. There <br />is no application of the dredge law or siltation structure <br />removal requirement. <br />mining Timetable. The operator estimates a highly variable <br />' market over the life of the mine. Estimates are for approxi- <br />mately 225,000 tons of material annually during the period 1978 <br />through 2011. The deposit varies between 15,000 and 96,000 <br />' tons per acre. Approximately 3.125 acres per year will be <br />excavated if an average deposit thickness of 30 feet is <br />' assumed, The five-year stages will affect somewhat more than <br />sixteen acres because the slope areas around the perimeter will <br />1 <br /> 10 <br />' <br />