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<br />l7tC Corporation - - -- - <br />ttasaar~h -ane Dawlopaoaat ~ C!O/a~92-012 <br />pririceton, xax Jarsay papa ~ <br />amount of apanida that tsigrataa tram the tailings bottppmmus into tri• <br />aquaeua portion e! tlta pond. Eagd on laboratory raaltlts, it is <br />~atiaat•d that additiea e! stoat Zs, 000 Qallons of b0~'E~O2 to tlia <br />pond rill ba asoasaas7r to rsduoe the Nada Clt' to aaceptabla <br />iavals. Good sixes oats ba obtaitsad (a) nsiriq a rooirNlatinq p~atp <br />aystam or (b) by piaoinQ a EDpti lira out in tAe pond a !sr hutfdrad <br />last !taus shot.. TAa E 02 can b• injeotad item a tanks truck into <br />!Aa shots aide o! the ~PE !.seta. <br />1. To 'taairitairi the tunas CN" porid at ari acceptable iav 1 once the <br />initial pond treatuaent is eomplatsd, ago should a injactad <br />wntinuousiy to the pond vstas. n wt ratio o~ Hio9/CN-~tveeri 1/1 <br />sad s.s/1 is raoomman4ed. At a 1.78/1 rt ratio, * laoO sate <br />incetring slurry tlor seta and assuming a avsraga Nada Olt' lwel e! <br />gallons/Qayts09 1[ 0= t o~ldaba a~gu~~ ots and volatilie~atian, G!! <br />7. I-lternatiVely, syo2 could bs injected directly into t2-s tailings <br />•1 attar the xVR systsm, but FI~Op eorisumptiori would bs higher <br />than tsaatmsnt of tba pond vatar. <br />8~aammpplas of pond (TPLY-30) and tailings altsrsy (CTS4-70) om !4 CZL <br />tari)t rata Cant to Ft[Ns Peroxygan Cheaaicals Division Lab atvries in <br />Princeton FJ for NnDS CH- detoxification atudiaa usia hydrogen <br />peroxide. Th. mill vas dorm !or a days tQtsri the samples tars taksn. <br />'aalnkiaai proeedurs <br />The picric acid coiorimetric matho4 was wad. This tosthod anlaly:ss for <br />frse and t-J1D9 CN-. <br />y~~ea Dat~~t~eat~oii t~roced~e <br />Ths effect of the Mt. ratio at MZOZ/CN- and stirring an s Ooyyariide <br />dstoxiliaation and trio sltsat of ti~o2 on the copper ooncen~ration in <br />td7e pond rnter Mad datarmiriad. <br />rilty ml of solution/slurry was added to a 100 ml glass baakar <br />tvllvwed by addition of b0i F1tC standard grade tSyoZ. Sappples for <br />residual 8ZO7 ware taken psriodically until the 8Z0 was dipletad. <br />Zhie was followed by sampling the tailings slurry an~ gond vatat for. <br />1U1D9 CN`. Samples of the pond water before and sitar datoxif cation as <br />well as a pracigitate which lormad ware analyzed for copp~r by the <br />atomic emission method. <br />