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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM <br /> (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 />5 : 014-A <br />0000N61 <br />: DMR Mailing ZIP CODE: 81424-0535 <br />Somerset, <br />CO - <br />81424 0535 M <br />B <br />PERMIT ER DISCHARGE NUMBER <br />MINOR <br />FACILITY: SANBORN CRK 8 ELK CRK MINES GUNIS <br />LOCATION: 3737 HIGHWAY 133 MONITORING PERIOD SURF RUNOFF TO N FK GUNNISON R <br />SOMERSET, CO 81434 MM/DD/YYYY MM/DD/YYYY External Outfall <br />ATTN: James T. Cooper, EVP FROM 07/01/2010 TO 07/31/2010 No Discharge <br />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE <br /> EX OF ANALYSIS TYPE <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE <br /> MEASUREMENT <br />0040010 <br />Effluent Gross PERMIT """ <br />»»" •••? <br />* <br />N <br />M <br />9 <br />SU <br /> <br />Solids <br />total sus <br />ended REQUIREMENT MI <br />I <br />UM MAXIMUM Monthly INSITU <br />, <br />p SAMPLE <br /> MEASUREMENT """ "•"' "-"` <br />0053010 <br />Effluent Gross PERMIT ....,. '•'••• »••-• ....., 70 <br />mg/L <br /> <br />Solids <br />settleable REQUIREMENT 30DA AVG DAILY MX Monthly GRAB <br />, SAMPLE <br />"• " <br /> MEASUREMENT """ """ """ <br />0054510 <br />Effluent Gross PERMIT <br />REQUIREMENT <br />».,.. »... •»» <br />DA <br />V <br />Re. I <br />Y MX <br />ml/L <br /> <br />Iron <br />total (as Fe) 0 <br />A <br />G DA <br />L Monthly GRAB <br />, SAMPLE <br /> MEASUREMENT <br />0104510 <br />Effluent Gross PERMIT <br />REQUIREMENT <br />,,,.» »•» ffe'•• <br />A A <br />60Y M <br />uglL <br /> <br />Oil and grease 30D <br />VG DAI <br />X Monthly GRAB <br /> SAMPLE <br /> MEASUREMENT •••••• <br />0358210 PERMIT ....,. ....`• ••»-• ,..... <br /> <br />Effluent Gross <br />REQUIREMENT ...... <br />10 <br />mg/L <br /> <br />Flow, in conduit or thru treatment plant <br />SAMPLE INST MAX Contingent GRAB <br /> MEASUREMENT ""`• »•-•• »••.. .,.,.. <br />50050 1 0 <br />Effluent Gross PERMIT <br />REQUIREMENT Req. Mon. Req. Mon. Mgalld <br />300A AVG DAILY MX f»~•• *»•• <br />--»• <br />•»?•• <br /> <br />Oil and grease visual <br />SAMPLE Monthly INSTAN <br /> MEASUREMENT •••••- .»». <br />84066 1 0 <br />Effluent Gross PERMIT Req. Mon. Y=1;N=0 <br />-f'-•• <br /> REQUIREMENT INST MAX <br /> Monthly VISUAL <br />MU III LE PK 'PAL CECUTIVE OFFICER "`m" °""`r pe°'try °t "`" tmt wa docanixnt and all anacnmenta were prepared n,aier my dirretinn °r <br />supervumn m ac,:ordance wtN a s smm designed m wore Nw qualified pe,wrmel pea- gath her and /f TELEPHONE DATE <br />evaluate Ne information submitted. Based y wham of the peper who e G , <br />?y/ /? / system, or those perwns dueNy responsible e for gathenng the i _ . . r. <br />nfornatio, the infortnaN_ on s. tub mi tted is. "'.9 <br />?fM ; C <br />f.y q <br />?ne C, ?a J' wthe bcafo knn belief.we.accurate,and complcte.iam aware ft, there <br />VV penalties for w bmini.gng (.Jand false Nfamwtiun, itrcluding the possibility off aW impnwrmtent for knowing <br />arc signircani O 70 ?!?"J??6 Q? // '20/el <br />TYPED OR PRINTED ovnuns. NATURE OF PRINCIPAL EXECUTIVE OFFICER OR <br />AUTHORIZED AGENT AREA Coda NUMBER M DD/YYYY <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />TSS 8 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.01106) Previous editions may be used. <br />Page 1