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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) Form Approved <br />DISCHARGE MONITORING REPORT (DMR) OMB No. 2040-0004 <br />PERMITTEE NAME/ADDRESS (Include Facility Name/Location if Different) <br />NAME: Oxbow Mining LLC <br />ADDRESS: PO Box 535 <br /> Somerset, CO 81434-0535 <br />FACILITY: SANBORN CRK & ELK CRK MINES <br />LOCATION: 3737 HIGHWAY 133 <br /> SOMERSET, CO 81434 <br />ATTN: James T. Cooper, EVP <br />000000132 007-A <br />PERMIT NUMBER DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />FROM 12/01/2010 TO 12/31/2010 <br />DMR Mailing ZIP CODE: 81424-0535 <br />MINOR <br />GUNIS <br />SEDIMENT POND TO HUBBARD CREEK <br />External Outfall <br />No Discharge <br /> <br />PARAMETER QUANTITY OR LOADING <br />QUALITY OR CONCENTRATION NO. FREQUENCY <br />OF ANALYSIS SAMPLE <br />TYPE <br /> <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE ,..,„ <br /> MEASUREMENT <br /> <br />0040010 <br />Effluent Gross PERMIT <br />REQUIREMENT """ """ '•'•" 6.5 <br />MINIMUM „••" 9 <br />MAXIMUM SU <br />Monthly <br />INSITU <br />Solids, total suspended SAMPLE <br /> MEASUREMENT <br /> <br />0053010 <br />Effluent Gross PERMIT <br />REQUIREMENT """ '•"» »' `•»'• 35 <br />30DA AVG 70 <br />DAILY MX <br />L <br />Monthly <br />GRAB <br />Solids, settleable SAMPLE <br />„„•` <br /> MEASUREMENT """ """ <br /> <br />0054510 <br />Effluent Gross PERMIT <br />REQUIREMENT """ "»» '»»' •»•» Req. Mon. <br />30DA AVG Req. Mon. <br />DAILY MX mUL <br />Monthly <br />GRAB <br />Iron, total (as Fe) SAMPLE ..„„ , <br />` <br /> MEASUREMENT <br /> <br />01045 1 0 <br />Effluent Gross PERMIT <br />REQUIREMENT """ "`•" "" ' ""'•• 3500 <br />30DA AVG 7000 <br />DAILY MX ug/L <br />Monthly <br />GRAB <br />Oil and grease SAMPLE .,..„ <br /> MEASUREMENT <br />0358210 """ ' <br /> <br />E <br />ffluent Gross PERMIT <br />REQUIREMENT »»' •»"• ••'••• <br />10 <br />INST MAX <br />m9/L <br />Contingent <br />GRAB <br />Flow, in conduit or thru treatment plant SAMPLE <br /> MEASUREMENT <br /> <br />50050 1 0 <br />Effluent Gross PERMIT <br />REQUIREMENT Req. Mon. <br />30DA AVG Req. Mon. <br />DAILY MX Mgal/d •""• »••-• •-•*» „..„ <br />Monthly <br />INSTAN <br />Solids, total dissolved SAMPLE <br /> MEASUREMENT <br /> <br />7029510 <br />Effluent Gross PERMIT <br />REQUIREMENT """. "»" '»»• "'•» Req. Mon. <br />30DA AVG Req. Mon. <br />DAILY MX <br />m9/L <br />Quarterly <br />GRAB <br />AMEf11TLE PRINCIPAL EXECUTIVE OFFICER <br /> <br /> <br />(A ;`° d` fi.wtb" hu d-um"'°d'11--hme"--pr -d-d,"" di,? . <br />P-fifY fyi n,n ,;u,a.na m,af um aeaig?ed m...ure thu quil,eed Personnel properly g.tha-d <br />e hmte me infomv,ion subminal. Based on my mqu,ry of the person or pawns who m.mge Iha <br />TELEPHONE <br />DATE <br />%j <br /> <br /> <br />? <br />' <br />systmt, "r those Pawns direly respo.ible for gathn'ng the mf tr ft.o the ;nfwnanon wbmitnd is. <br />m the best of my know)e?e nd bebef, true, auwate, and mmp4te. 1 e,n .ware thu there are significant / <br />O ??? <br />{r? <br />lC. r! Ooai forwhmatng(.iu of tun memo gthepn::;ndiyufr .mine wnmentCorkmw g <br />n SIGNA EOFPRINCI CJ ` <br />TYPED R PRINTED PALEXECU OFFICER OR <br /> AUTHORIZED AGENT AREA Cod. NUMBER MMMOIYYYY <br />CAMMPNTA Awn FYPI ANATInId nC ANV 1110Ns -n uc rn_a_-___ _" <br />TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR <=10YR,24HR PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVENT-SEE I.A.1,PP 4-5, AND <br /> I.A.2, P. 5 <br />FOR RQMNTS.TDS MONITORING-SEE PART VI.A.2.G OF RATIONALE. 30 DAY AVG. IS HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. <br />I tnev.uuuol rrewous eatbons may be used. Page 1