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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) Form Approved <br /> DISCHARGE MONITORING REPORT (DMR) OMB No. 2040-0004 <br />PERM ITTEE NAME/ADDRESS (Include Facility Name/Location if Different) <br />NAME: Oxbow Mining LLC <br /> <br />ADDRESS: PO Box 535 000000132 016-A DMR Mailing ZIP CODE: 81424-0535 <br />Somerset, CO 81424-0535 PERMIT NUMBER DISCHARGE NUMBER MINOR <br />FACILITY: SANBORN CRK 8 ELK CRK MINES GUNIS <br />LOCATION: 3737 HIGHWAY 133 MONITORING PERIOD SURFACE RUNOFF TO ELK CREEK <br />SOMERSET, CO 81434 MM/DD/YYYY MM/DD/YYYY External Outfall <br />ATTN: James T. Cooper, EVP FROM 06/01/2010 TO 06/30/2010 No Discharge <br />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE <br /> E( OF ANALYSIS TYPE <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE ,,,,,, <br /> MEASUREMENT +?"" "'•" """ <br />0040010 ""`• <br /> <br />Effluent Gross PERMIT <br />REQUIREMENT •••'•• •„.•• <br />MINIMUM <br />MAXIMUM <br />SU <br />Monthly INSITU <br />Solids, total suspended SAMPLE <br /> MEASUREMENT <br />0053010 <br />Effluent Gross PERMIT "..,. '•"•' """ .,•'., 35 70 mg/L <br /> REQUIREMENT 30DAAVG DAILY MX Monthly GRAB <br />Solids, settleable SAMPLE <br /> MEASUREMENT <br />0054510 <br />Effluent Gross PERMIT <br />REQUIREMENT <br />•„„, <br />.••••• <br />DA AVG <br />LYAM <br />X <br />mUL <br /> 30 M <br />DAI Monthly GRAB <br />Iron, total (as Fe) SAMPLE <br /> <br />MEASUREMENT . .., ..., <br />0104510 <br />Effluent Gross PERMIT <br />REQUIREMENT "'•" "•'•• "•'•• 3000 6000 ug/L <br /> 300A AVG DAILY MX Monthly GRAB <br />Oil and grease SAMPLE <br /> MEASUREMENT <br />0358210 PERMIT """ •.•••' ••.... •••••• •..... <br />Effluent Gross <br />REQUIREMENT 10 mg/L <br /> <br />Flow, in conduit or thru treatment plant <br />SAMPLE INST MAX Contingent GRAB <br /> MEASUREMENT .7. •"'• ...... <br />•••••- <br />50050 1 0 <br />Effluent Gross PERMIT Req. Mon. Req. Mon. Mgal/d •'••*• •.•..• ...... .,„. <br /> REQUIREMENT 30DA AVG DAILY MX <br /> <br />Solids, total dissolved <br />SAMPLE Monthly INSTAN <br /> MEASUREMENT <br />7029510 <br />Effluent Gross PERMIT <br />REQUIREMENT """ „•,., •••••• •••••• <br />QRT <br />AV <br />A <br />LYn <br />mg/L <br /> RA <br />G D <br />I <br />MX Quarterly GRAB <br />VG AL EXECUTIVE OFFICER ""' ...° ? 'ry 07 uw - mu dxument and all aaaehmmis u,m prepay d rid= my dire ton ° <br />aupcm un It, accurdancc with a system designed m assure that gmlitial rsonMp <br />pe <br />l aperly lath. am! <br />TELEPHO <br /> <br />' <br />evalwie the t m <br />submiltsl. Based un mY inquiry of the perwn ur pers°n <br />hu <br />> <br />r th <br />e <br />d NE DATE <br /> <br />• <br />r e <br />i . at <br />y <br />es <br />persons <br />trccnly r:spwuihle (or gathering the information, <br />the inf°rnution submim,d ix. <br />ru the best of my knowledge aral behef, uve, accurate, and camp4te. I am aware that there are significant <br />h / <br />Q <br /> <br /> <br />5 <br /> <br />pena <br />,es for wbmnnng False i.f. wuon, mcluding the p°ssrbihry of f e and impriwntermt for k -.g <br />l <br />i 7O ?2 <br />?/Z ? ?' <br />/ / O <br /> <br />ED OR PRINTED n <br />ar <br />m,. SIGNA E OF PRINCIPAL EXECUTIVE OFFICER OR <br /> AUTHORIZED AGENT AREA C-d- NUMBER MM/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,24 HR PRECIP EVENT;SETTLEABLE SOLIDS LIMITS MAY BE WAIVED FOR >10YR,24HR EVENT-SEE I.A.1, PP 4-5, <br /> AND 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 RPTD. <br />EPA Form 3320.1 (Rev.01/06) Previous editions may be used. <br />Page 1