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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <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 010-A <br />PERMIT NUMBER [DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />FROM 10/01/2010 TO 10/31/2010 <br />Form Approved <br />OMB No. 2040-0004 , <br />DMR Mailing ZIP CODE: 81424-0535 <br />MINOR <br />GUNIS <br />SEDIMENT POND TO SANBORN CREEK <br />External Outfall <br />No Discharge <br /> <br />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. <br />EX FREQUENCY <br />OF ANALYSIS SAMPLE <br />TYPE <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE <br />•""' <br /> MEASUREMENT """ <br />00400 1 0 <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 />0053010 <br />Effluent Gross PERMIT <br />REQUIREMENT „"" 35 <br />30DA AVG 70 <br />DAILY MX mg/L <br />Monthly <br />GRAB <br />Solids, settleable SAMPLE <br /> MEASUREMENT <br /> <br />00545 1 0 <br />Effluent Gross PERMIT <br />REQUIREMENT Req. Man. <br />300A AVG Req. Mon. <br />DAILY MX mUL <br />Monthly <br />GRAB <br />Iron, total (as Fe) SAMPLE <br /> MEASUREMENT <br /> <br />0104510 <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 /> <br />0358210 <br />Effluent Gross PERMIT <br />REQUIREMENT „"" ,."" """ 10 <br />INST MAX mg/L <br />Contingent <br />GRAB <br />Flow, in conduit or thru treatment plant SAMPLE <br /> MEASUREMENT <br /> <br />500501 0 <br />Effluent Gross PERMIT <br />REQUIREMENT Req. Mon. <br />30DA AVG Req. Mon. <br />DAILY MX Mgal/d `««' '•"-* ,,,,,, »?- <br />Monthly <br />INSTAN <br />Oil and grease visual SAMPLE <br /> MEASUREMENT ...... <br /> <br />840661 0 <br />Effluent Gross PERMIT <br />REQUIREMENT Req. Mon. <br />INST MAX Y=1;N=0 """ •••••• •'*••• •?•- <br />Monthly <br />VISUAL <br />NjkMEITITLIE PRINCIPA ECUTIVE OFFICER r.emry uderp ufry .fl aw ihauhis loam-d.lla achmrnu n-ere prepared order my dv«;ano <br />wpervuiun in ac-d- wnh .'2 dKigned m ayme thm gwheed penunnel propedy gamer and ` <br />evaluate me ;vf motion auhmmrd. Based un mY myurry ufine perwn or perwm who mana <br />e me <br /> <br />- <br />TELEPHONE <br />DATE <br />(TC <br /> <br />?/` ' <br />g <br />-kb--f mow ns dually rnp v ible fw gaM nng he intmwtlon he nfomurionsubmiro d is, <br />myIn,owlcdkkcen <br />d hehef, true, eccurue, and complete I em aware due there ve significant <br />r <br />7? a ?/ <br /> <br />Y 7 <br />72 <br />///??,? <br />' peo'a'tlfouhmnng ralwn(matiunndudmghe puaib;liry' of f and impwomem f rmwng I NATURE OF PRINCIPAL EX CUTIVE <br /> <br />TYPED OR PRINTED OFFICER OR <br />AUTHORIZED AGENT <br />AREA Cod. <br />NUMBER <br />MMfnnrfyYY <br />^......?.-... .-..... r,.. `.-..'.......... .+... ......e......w p.aasst ssna.er an aaaawmm ns nnrnt <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 />EPA Form 3320-1 (Rev.01t06) Previous editions may be used. Page 1