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_~ <br />:;; <br />'~ <br /> <br />cotott~oo oa~arnttarr of e~iTtt <br />Decilcated ro protactlrg and 4nprovlny d» 1»a~h and <br />environment d du peopM of Colorxk <br />4aaot7t~ or. s. <br />Demur, a0277•t530 4270E11d~AwnW <br />Phone Dm) 691.7000 Demur, Colendo a071W716 <br />" - - Pm16st-4700 <br />March 14,1994 <br />Mr.l3erhan 1CeBblevv <br />Division of Minerals and Geology <br />Colorado Deparmtmt of Natural Resauas <br />1313 Shermm St, Room 215 <br />Denver, Colorado 80203. <br />RECEI+,~~,~ <br />":`~" 17 1934 <br />Q..:.. ..:.:. ,~r~a. <br />:G(.: av <br />1tE: Draflt Letter . <br />Cripple Creet< wd Victor Gold Company <br />CDPS Permit Na CO.0043648; MLRB PermitNo. M-80.244 <br />TeReeCtiunty <br />Deer Mr. Kelfelew: <br />~1) <br />. y.:, <br />~`q. .".~ <br />~~t~' <br />r~ : o~ ew' Mrtt <br />On ppga 2, item I, there is confusion on dte 10 year! 24 hourNPDES permit epplicatioa Tt is <br />unclear what is meant in this puagraph. The federal elHtunt guidelines do not allow the <br />discharge of process water fiom the cyanide heap ]each aystema unless it mods txrtain <br />requiranmts, One of these does include if them is a 10 year/24 hour btorat event However, <br />these is nothing a the federal rapriremeab which prohibit the steoe fiom requiring a design which <br />is more stringent It shoull be noted that the prohrbitiaa m discharge ~Y mcampavaes the . <br />leaehmg process. It would not, far example, prohibit the discharge firm the actual mining <br />operation, firm the uaderdrain system providing it is nd impacted by the cyanide in the leech pad <br />or fromthe uodudrain of s waste mdr pr7e: ; . <br />2J It is not clear if the DMG is requiringwater quality momtaing of Fan l~fde Creek and Cripple <br />Credo We sfroogiy suggest that mooitaing these streamv 6e added These streams erns of good <br />quality and should be watched closely. <br />3.) On psi S, item F, the Division disegreea that the discharge from the dump area would be <br />covered under the stamwster permit for tho situ R is the Division's dderminafion that such <br />waters are pmceas water point sai¢cd and should be required uudv a process water permit. Thu <br />materials in the dump aces will be waste rock sod tailings fivm the Carlt~ Tailings pond ores <br />These nutaids curtattly aro showing detetxabk levels ofcyenida k eddidmt, since this is <br />water which will infiltrate through the tailings, not nmo$ pa Divisicm policy drier is process <br />water. The Division will requiro a permit far the pumping of this water , _; _ <br />PLAI FF8 <br />~' ... <br />I81T <br />-H "=L3o7 <br />--~ 001884 " <br />Per your request we have reviewed your drefi letter to Cripple Credo and Victor Gold Ceompmy <br />waceming the MLRli permit amendment No. 6. A[otiQ with myself; Sarah lohason end Rico <br />Horstmasn also reviewed it The following em our comments: <br />