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,~V BY~PMHS <br />ID~ JUN 27'95 <br />• 110- 5-83 ~ 8118AM 1 DA1TlE MTN. ~ SLR <br />15 12 No.005 P.03 <br />3U3i853U4U1at 3 <br />t,het !a bcinq aced for RRise 11s routinely running over )5 perosnt. <br />tinoa. x! use o! this less perseabi• material reaulto in saturated <br />lenssa within the beaoh teilin9er approval of an additional <br />upstream An*a7llcnent raise IRay ba jeopardlsad. Tha Division will <br />also seQuire a aose thos0ugh oheraoteritation o! the Lerch tailings <br />at the tires that the next: raise is pseposed (v.q~. r hiphcr <br />frequency of oono petrotrmaet:ar testa) than ii a lsea draining vs <br />high yarmoebility material wag beingq used to construct Raise I. l1a <br />wt discussed during the Octobes 1~ 1993 site ir+epootion, lUAt! <br />should cork on preparing an analysis of the use o! non- <br />speoitieation matarialar both in raise construotion and in the <br />dralMga h)anket~ end the potential ispnabs on the perlormenae of <br />the tailing impoundssnt. <br />T! you heva any questions, please oontaot me. <br />91nG~Y. <br />7rllan C. eoreneon <br />Reclamation 6pecialist <br />co: Larry Oehlsr. <br />Jib Stevens <br />di>n Pendleton <br /> <br />