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;'iuu,th; C. Sr.:i.tl7 <br />• D•_,_cncer 13, 1979 <br />p;~~~~ <br />?) the lin:Cationt of the ~res~•nt pXe-sorting sys[em to detect small aau7cn~s <br />oC ore i^Ce.mixe3 with tarot amounts of waste roc1:. <br />'~) altern.~.ce r.,utLud:: of pre-sorts:;g. 'F'use methods should be scnsitivu <br />^crc„h to suture Ci;is D,partrner,t [hat ure ..., not being de;usi.t.:d :,y 4ast.c <br />r,~ck. <br />- 5 % the , ureent of ore sate: mixed with th•~ waste rock. ',n ester.<.: i~ ~ survey <br />,f the •.;~stc crock :;Cock pile should b.. a:rried out to determine tbi.s. <br />- ~~) r:moff :end r~inCall atom itiuns fcr th,: Schwartzwaldet mi:7c ar.d orb ~•allcy. <br />it the acid contcut of rai, in this region. <br />--'.) ~_he physiochemical reactions between the ore, the waste rock and the rain <br />.:;tCC*. <br />- d) an estimate of the amour t of ~~6P.a carried [o f;alston Creek as runoff from <br />the waste rock pile. <br />• -'t) the disposal of potsibl; contaminated railroad timbars and other mine ::ast~• <br />below the waste pock stack pile. A survey of these waste matcrials.sl;culd <br />he con~ucted ant if any materials are contaminated, an nlterr.atice nct':,ed <br />of ditporal ~:i:auld be d; scribed and ivplemcntcd u('on the :,p~rnval of this. <br />Dcpnrt::cnt. rt procedure to survey other-waste materials before they arc <br />disputed of in this man;er should be described. <br />Sincerel}•, <br />, e ^ ' / <br />~// -~1~ /`1 ~~``` <br />A:uert .i. i{s~Yc, Director <br />Radiation and liazarduus [1.istes <br />Control Division <br />AJ I l : C1 [{ : ew <br />cc: Edward :9cGrath <br />Sob Shulclc <br />C::orge Prince <br />Rzde Orell <br />• <br />