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PERMITTEE NAME /ADDRESS (include Facility Name/Location if Different) <br />NAME: Oxbow Mining LLC <br />ADDRESS: PO Box 535 <br />Somerset, CO 81434 <br />FACILITY: ELK CREEK MINE <br />LOCATION: 3737 HWY 133 <br />SOMERSET, CO 81434 <br />ATTN: Mike Ludlow. Exec VP <br />NATIONAL POLLUTANT DISC <br />DISCHARGE <br />I COG850064 <br />MM/DD/YYYY <br />01/01/2014 <br />ELIMINATION SYSTEM (NPDES) <br />)RING REPORT (DMR) <br />015-8 <br />DISCHARGE NUMBER <br />RING PERIOD <br />MM/DD/YYYY <br />03/31/2014 <br />DMR Mailing ZIP CODE: <br />MINOR <br />Discharge to Elk Creek <br />External Outfall <br />Form Approved <br />OMH No. 2040-0004 <br />81434 <br />No Discharge <br />QUANTITY OR LOADING <br />QUALITY OR CONCENTRATION <br />NO. i <br />FREQUENCY <br />SAMPLE <br />PARAMETER <br />DATE <br />EX <br />OF ANALYSIS <br />TYPE <br />VALUE <br />VALUE <br />UNITS <br />VALUE <br />VALUE <br />VALUE <br />UNITS <br />pHSAMPLE <br />M <br />..,,., <br />.,.... <br />...... <br />. «... <br />MEASUREMENT <br />00400 1 0 <br />PERMIT <br />`• "" <br />" - "` <br />" "" <br />6.5 <br />" "" <br />9 <br />SU <br />Twice Per <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />INIMUM <br />MAXIMUM <br />Month <br />Solids, total suspended <br />SAMPLE <br />•-"'- <br />...... <br />"'•" <br />" "" <br />MEASUREMENT <br />005301 0 <br />PERMIT <br />"••" <br />" "" <br />" "•' <br />.•• "' <br />35 <br />70 <br />mg /L <br />Twice Per <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Month <br />Solids, settleable <br />SAMPLE <br />" "'• <br />••.... <br />., "•` <br />••.... <br />MEASUREMENT <br />00545 1 0 <br />PERMIT <br />'••"- <br />•`•"` <br />"` "' <br />" "" <br />Req. Mon. <br />.5 <br />mUL <br />Monthly <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Iron, total recoverable <br />SAMPLE <br />•`• - -• <br />•• " -` <br />" -• -• <br />-•`•" <br />MEASUREMENT <br />00980 1 0 <br />PERMIT <br />`- -•" <br />• "•" <br />" "" <br />" " -' <br />1000 <br />Req. Mon. <br />ug /L <br />Twice Per <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Month <br />Oiland grease <br />SAMPLE <br />`• "`• <br />" - - -• <br />•••••. <br />• -• - -• <br />-••••• <br />MEASUREMENT <br />0358210 <br />PERMIT <br />• -• - -- <br />-' -••- <br />• -` ^•- <br />•..... <br />•'••" <br />10 <br />mg /L <br />Contingent <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />INST MAX <br />Flow, in conduit or thru treatment pla <br />it SAMPLE <br />•••••- <br />...... <br />...... <br />...... <br />MEASUREMENT <br />500501 0 <br />PERMIT <br />Req. Mon. <br />Req. Mon. <br />MGD <br />• " "` <br />'• "" <br />`•• "` <br />•• " -` <br />Continuous <br />RCORDR <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Solids, total dissolved <br />SAMPLE <br />"`"- <br />•• - -' <br />•••• -• <br />•••... <br />•••' -• <br />MEASUREMENT <br />70295 1 0 <br />Effluent Gross <br />PERMIT <br />I REQUIREMENT <br />'•• "` <br />" -• -' <br />•• "•' <br />'• - "• <br />" "" <br />Req. Mon. <br />DAILY MX <br />mg /L <br />Quarterly <br />GRAB <br />NAME/TITLE PRINCIPAL EXECUTIVE OFFICER <br />cegfy under penalty of Isw mat this doou —t and au attachments were prepared ender my dlrechon <br />s�peh, scn in accordance wth a system oesgned personnel to assure that quald— perso properly gather an <br />valuate the mfonnation submitted Based on my moulry of the person or persons vmo manage <br />system. or those persons directly responsible for gathering the information . the mformaton sue M1ted <br />to the best of my rnovhedge ano oel,ef true accurate and complete. 1 am aware tfwt there are <br />s gninwntpealues far sub— tting false information mdwing the po ssialnyof fine and-p —nment <br />o—g volanons <br />`t <br />TELEPHONE <br />DATE <br />\ ? O <br />TYPED OR PRINTED <br />y !i <br />, <br />SIGNATURE OFPRFNCIPAL EXECUTIVE OFFICER OR <br />AUTHORIZED AGENT <br />-Code <br />NUMBER <br />mwDibinryyy <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />Settleable solids limit waived for 10 -yr, 24 hr precip event subject to burden of proof requirements in Part I.B.6. <br />Any additional data shall be supplied to the division within 48 hours. <br />EPA Form 3720 -1 (Rev.01 /06) Previous editions may be used. <br />M <br />08/26/2013 <br />Page 1 <br />