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<br />N <br />J <br />Mr. Willy Front <br />September 19. 1986 <br />Page 2 <br />2. Catazwphic mllnpse of she solution Rvilies fD. d-121 depiq <br /> ~ <br />turbulent Bow onJ mixing of brine and th< fresh wafer ayuifcr: <br /> <br />thus musing on inneau in the Whire River sate load. <br />I` <br /> 'The FIC ACD1^5 ihC iifniiy ~ 11--CC UI a CBILSImpnIC COllappx <br />a <br /> and should emphasizesuch. I( <br />collaDx attvn is well probnhly 56 <br /> not be casazvopha. however. in any cox she brine freshwater mix <br /> will again xpnrnse Jue to a density Jiftertnce. <br /> I do nlll know of any dale mnnipulntion Thal prerlicts the liming of <br /> xll load increase to the While River az a result a( collnpud <br /> mine chilies. <br />7. Hydraulic connMion of the 'two' hiuorically xpamled aqui en <br /> has been shown by Wright Wat<r Enginttn and other geological anJ 55, <br /> groumlwaler siienltst. to exist. 1 Think she BLM cou1J lake a 56, <br /> more Grtn unnd ns to the eviJence for a hyJroulic COnnMian. 6U <br /> Continued suPpon for the 'two' ayuiler system whether implicit or <br /> explicit complicates the issues. <br />4. The stream depletion analysis by Wright Water Engineers far a <br /> pumping ale of I30 gpnl IproposeJ acting mining operazionl was <br /> suhmnled Febnlary Il. 19986. Thrs pumping mle wu rented l0 109 <br /> gpm by Cli((s Enginttring, anJ Wright Wmer Fltgineen rcvixd the <br />dePlctiun analysis which waz submined March ll. 1986. As the end <br /> of JO years Mt depletions to Piceansx Creek will be 0.1 c(s <br /> (srompeRd In 0.13 t{5 published in EIS) and net depletions to <br /> Yellow Creek will be 8.06 c(s Icmnpared l0 0.09 e(s published in <br /> EISI. <br /> To I+e elxvrale rclmive to the mine plan opernion, the EIS should <br /> ux the 109 gpm sttnnrio. <br /> 56, <br />3. Re1meJ to the depletion analysis is the s181emrn1 on page /:8 of 6Q <br /> the EIS (Section 4.4.1, semrM paragRphl. Weighs Wester Englnan <br /> did not make model mns offer the pumping ends, therefore. no <br /> preJinion west made az to the depletion IOg time. Why speculate. <br /> d This number is needeJ the mlKlrl run can he extended, however. <br /> this ytreation is really for the augmrnlutiun plan analysis. <br />6. On page 3-12 of the EIS. the sulemens is made Thal the head di(- <br /> fcrtntt Mwcrn she 'upper' and 'lower' ayuifers range from 0 to <br /> 100 ftts brnnlh the Icaze. Wright Wmer Engirteen Is not famil- <br /> iar wish meazuremem Thal iMlicme vtything clox to l00 fttt of <br /> head diRercntt on the leax. Il is our opinion Thal she 100-teal <br /> numhcr amc felon plates 2 and 3 of our 1983 rtpon. Thex maps <br /> weR grneraled 10 SNOW the geMral RIaiOMhlp3 bawern the heads <br /> Of Ilse b Called IWn igal(Cn. The map3 WCR nnl InlerWed 10 be <br /> rile specific for the salium Idtx. bus meRly guides for the <br /> model Wlbnsion. <br /> <br />Mr. Willy Fmnk <br />Sepember 19, 1986 <br />Page 3 <br />Think you for your consideration of These Comments. 1( Wri hl Water Engi- <br />nttn rtuyy b< of additional azsiuultt on behest( of Wol( Ridge Corporation, <br />pleau mll. <br />Very wly yours. <br />wRIGHT WATER ENGINEERS. INC. <br /> <br />WHB:erd <br />821-049.000 <br />(1.31) <br />u: Ed RoSer <br />Bill lonh <br />tarty Daub <br />