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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />PFP.MITTFE r1Fti1F!ADDRESS (/nc/udeFaci7ifyName/LocationifOifferent) <br />NAME: Oxbow Mining LLC <br />ADDRESS: PO Box 535 <br /> Somerset, CO 81424-0535 <br />FACILITY: SANBORN CRK & ELK CRK MINES <br />LOCATION: 3737 HIGHWAY 133 <br /> SOMERSET, CO 81434 <br />ATTN: Jame s T. Cooper, EVP <br />000000132 012A <br />PERMIT NUMBER DISCHARGE NUMBER <br />MONITORING PERIOD <br />MMIDD/YYYY MM/DD/YYYY <br />FROM 08/01/2009 TO 08/31/2009 <br />Form Approved ` <br />OMB No. 2040-0004 <br />DMR Mailing ZIP CODE: 81424-0535 <br />MINOR <br />GUNIS <br />SEDIMENT POND TO ELK CREEK <br />External Outfall <br />No Discharge <br />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION EX FREQUENCY <br />OF ANALYSIS STYPPEE <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE „,,,, .,. ...,,, .,„.. <br /> MEASUREMENT <br />0040010 PERMIT s.s 9 SU <br />Effluent Gross REQUIREMENT - MINIMUM. MAXIMUM. Monthly INSITU <br />Solids, total suspended SAMPLE „,.,, .„,., <br /> MEASUREMENT <br />0053010 PERMIT 35 70 mg/L <br />Effluent Gross REQUIREMENT 30DA AVG ` DAILY MX Monthly GRAB <br />Solids <br />settleable SAMPLE <br />, MEASUREMENT <br />005451 0 PERMIT Req. Mon. _ Req. Mon. r ' mUL <br />Effluent Gross REQUIREMENT 300A AVG DAILY MX' Monthly GRAB <br />Iran, total (as Fe) SAMPLE <br /> MEASUREMENT <br />01045 1 0 PERMIT 3000 6000 r. ug/L <br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX Monthly GRAB <br />Oil and grease SAMPLE <br /> MEASUREMENT <br />0358210 PERMIT 10 mg/L <br />Effluent Gross REQUIREMENT INST MAX Contingent GRAB <br />Flow, in conduit or thru treatment plant SAMPLE <br />MEASUREMENT <br />50050 1 0 PERMIT Req. 'Mon. . Req. Mon. Mgal/d <br />Effluent Gross REQUIREMENT 30DA AVG` DAILY MX Monthly INSTAN <br />Oil and grease visual SAMPLE <br /> MEASUREMENT <br />840661 0 PERMIT Req. Mon. Y=1;N=0 ,„ •,• „,„, <br />Effluent Gross REQUIREMENT INST MAX Monthly VISUAL <br /> <br />NAMEITITLE PRINCIPAL EXECUTIVE OFFICER I certify under prnalry flu, that this document sod 1 1 avschmrnts were pmpmed der y di-ion or <br />soperv,si ;a ernrdan?ewith,rsytemdeaignedtoaaearethatga 1ifitperaonn I opemiyg <br />atk oroi <br />TELEPHONE <br />DATE <br /> <br />4> valuam the information submitm. Based on my inquiry of the person or p m who mana the <br />ge <br />: <br />:rem <br />or no <br />e ao a <br />ml <br />ee <br />o ime for <br />amedn <br />m <br />i <br />r <br />a <br />he <br />r <br />d <br />b <br />a i ? <br /> y <br />. <br />Yp <br />s <br />y <br />p <br />g <br />g <br />e <br />P <br />m <br />oo, <br />n <br />m - <br />on aa <br />m?e <br />s. <br />to the best of m knowled a and belief, I— accurate, and wm late. I am aware that there ere si ificm <br />b Z 9- ) Z Z <br />d 9- - 6 g <br />(l fC'SI <br />GX <br />C peo <br />i <br />r^rmbmitengral<ior anon,ncludingthepossibiliryuffineaMimpsunmrnrrorknowing <br />t <br />• e <br />ryon5 <br />o SIGNA RE OF PRINCIPAL EXECUTIVE OFFICER OR <br />TYPED OR PRINTED AUTHORIZED AGENT <br />All. code <br />NUMBER <br />MM/DD/YYYY <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <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."rDS 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.01/06) Previous editions may be used. Page 1