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<br />• ~~ <br /> <br />P <br /> <br />~Z~ <br />By so doin_r,~drainage from 277 acres (28.0';) of the 939 acre drainage will <br />be prevented Erom draining throu5;h the steepened section of the main <br />drainage (Exhibit 3). .1s can be seen Erom the pit sequencing map (Exhibit A) <br />the final reconstruction of the drainage won't be completed until 1936. <br />During the interim, t~:o t^-?ovary diversions will be required to prevent <br />surface crater Erom cnterin;; .Ishr..ore Pit. These diversions are shown on <br />Exhibit A and a typical ccoss section is provided in E:<liibit `(. They <br />will be seeded to sod forming grasses and rip rapped where necessary to <br />prevent erosion. All runoff gill pass through a series of sedimentation <br />dams prior to leaving Ctic permit area. <br />Several ideas have been discussed during the course of planning and <br />reviewing the drainage reconstruction plan but all have been rejected <br />for various reasons. :2e believe [he plan herein proposed will prevent <br />any potential probler..s in a simple and effective way. <br />As I have previously mentioned, ere are very anxious to resolve this <br />issue. Ste are li-sited to salvaging and replacing topsoil during the <br />late Springy and Sum:ier months because of poor heather and ground conditions <br />at other times of the year. If the area in question is to be final graded, <br />retopsoiled and seeded in accordance with our existing permits, a final <br />contouring plan r,.usc be agreed to as soon as possible. Further, we are <br />herein requesting your approval for the final contours per our proposed <br />plan pursuant to 30CF2211.41 so that retopsoiling the area may commence <br />this Spring. <br />We appreciate your attentiveness to this matter. Please call if there <br />' arc any additio:ial questions. <br />Sincerely, <br />~/ ~~02~ <br />W. E. Sowards <br />Assistant to the Mine Manager <br />WES/eh <br />cc: Dean Massey <br />file <br /> <br />