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<br />(15) <br />Additionally, several of the ]ease stipulations con <br />noise are obviously directed a[ conveyor construction. Thd~ conveyor <br />line is not being built and therefore is not a part of this mine plan. <br />4. Land tonitoring, Since the term "land monitoring" is not <br />generally used in the environmental sciences community, it is <br />difficult to determine what EPA means by requesting a discussion <br />of this in the mining plan. CWI's programs for sediment retention, <br />the control of subsidence, and the reveg,etation of disturbed areas <br />are discussed in considerable detail in the mining plan and in <br />Dr. Leaf's supplemental letter of February 19, 1978. The revegeta- <br />lion and reclamation of disturbed areas is discussed in Subsections <br />4.4.2 and 4.4.3 of the mining plan. Soil erosion control iS <br />generally discussed in subsection 4.5.11. The monitoring for and <br />control of subsidence is covered in subsections 3.3.3.2 and 4.1.11. <br />The land related impacts of the mining plan are thoroughly covered <br />in the document. <br />VII. ldater Availability - "the plan refers to the possibility <br />of "improving the water yield" of the Stevens Gulch alluvium. This <br />discussion is located in Section 4.5.1.3.1 (page 32) of the Mine <br />Plan. Naturally, C41I is concerned that the water needs of the <br />mining operation (stated as approximately 60,000.gallons per day <br />or 46.03 acre feet per year,) be adequately supplied. The source <br />of this water to date has been a well field in the upper Stevens <br />Gulch area. Studies have shown, and the mine plan states that <br />during years of average runoff or above-average runoffi, natural <br />*This figure is based upon 60,000 ppd for an esti_maCed 250 <br />working days per year. <br />I <br />i tli <br />iu ~~ ~ ~~~~~~ ll~~ l~ 1~;~ ~ <br />F, <br />