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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />iW, :- <br />PERMITTEE NAMEIADDRESS (Include Facility Name/Location if Different) <br />NAME: Oxbow Mining LLC <br />ADDRESS: PO Box 535 <br /> Somerset, CO 81434-0535 <br />FACILITY: SAN13ORN CRK & ELK CRK MINES <br />LOCATION: 3737 HIGHWAY 133 <br /> SOMERSET, CO 81434 <br />ATTN: James T. Cooper, EVP <br />Form Approved <br />OMB No. 2000-0004 <br />000000132 010-A DMR Mailing ZIP CODE: 81424-0535 <br />PERMIT NUMBER DISCHARGE NUMBER MINOR <br />GUNIS <br />MONITORING PERIOD SEDIMENT POND TO SANBORN CREEK <br />MM/DD/YYYY MM/DD/YYYY External Outfall <br />FROM 05/01/2011 TO 05/31/2011 No Discharge <br />PARAMETER QUANTITY OR LOADING Q <br /> VALUE VALUE UNITS VALUE <br />pH SAMPLE <br /> MEASUREMENT <br />0040010 <br /> <br />Effluent Gross PERMIT <br />....•. <br />t <br />6.5 <br /> REQUIREMENT MINI <br />MUM <br />Solids, total suspended SAMPLE <br /> MEASUREMENT ??? """ """ ••"'• <br />00 <br /> <br />Effluent Gross <br />Effluent PERMIT """' •~ <br />.,.«. <br />..».. <br /> REQUIREMENT <br />Solids, settleable SAMPLE <br />?? <br /> MEASUREMENT """ """ "•"' <br />0054510 <br /> <br />Effluent Gross PERMIT ••'~• <br /> REQUIREMENT <br />Iron, total (as Fe) SAMPLE <br />??'? <br /> MEASUREMENT "" ""•' """ <br />0104510 <br /> <br />Effluent Gross PERMIT """ ••'••' <br />k».. <br /> REQUIREMENT <br />Oil and grease SAMPLE <br /> MEASUREMENT <br />?? <br />' "" <br />""•' <br />•'• " <br />0358210 <br /> <br />Effluent Gross PERMIT <br />~?* <br />•«?? <br /> REQUIREMENT <br />Flow, in conduit or thru treatment plant SAMPLE <br /> MEASUREMEN T <br />50050 1 0 4 <br /> <br />Effluent Gross PERMIT Req. Mo <br />- <br />' Req. Mon. Mgatld <br /> REQUIREMENT 30DA AV <br />-j DAILY Mx <br />Oil and grease visual SAMPLE <br /> MEASUREMENT <br />84066 1 0 <br /> <br />Effluent Gross PERMIT Req. Mon. Y=1;N=0 <br /> REQUIREMENT INST MAX <br />Monthly INSTAN <br />Monthly VISUAL <br />s A AMEMTLE PRINCIPAL EXECUTIVE OFFICER ?`?'ry `p°alry of la ,hat tW, d-- -d Wf.tn M,rnn wxKpepved -d. my dual- <br />:w m.«wd..a..11h.,y?md-g dw,s:urcd.,q-lifKdp-muipopeyg„K,d TELEPHONE DATE <br />-1- the infurm.nm submm.d- Based u y npwry of the Ir,wn w pasot W m.u.gc she s „?sr <br />?'? /' ' ? It I i- -- V- ar th- pcnons di-ly rew-,bk f gathering the i, mt.cioo, do mfwuunon subouoed u. ? <br />. V <br />trio d- b- -f -Y ,n -1-* -db<I. ?.-d? kn I.m.wwe? d-ve ??t Age <br />sioknom.F Glse udurttwwn, mcludittg We possibdtry utf a and rmpnsunment fw Imuving <br />? <br />i <br />4 zz o6 10 <br />TYPE OR PRINTED SIGNA E OF PRINCIPAL EXECUTI OFFICER OR NUMBER MWO131YYYY <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) AUTHORIZED AGENT AREwcod. <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 /> IA.2, P. 5 <br />FOR RQMNTS.TDS MONITORING-SEE PART VLA.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. <br />Page 1 <br /> <br />ALITY OR CONCENTRATION NO. <br />EX FREQUENCY <br />OF ANALYSIS SAMPLE <br />TYPE <br />VALUE VALUE UNITS <br /> <br /> <br /> MAXIMUM Monthly INSITU <br /> <br /> <br />35 <br />30DA AVG 70 <br />DAILY MX mgt Monthly GRAB <br /> <br /> <br />Req. Mon. <br />30DA AVG Req. Mon. <br />DAILY MX mUL <br />Monthly U <br />GRAB <br />DA AVG I DAILY MX I uglL I I Monthly GRAB <br />'WU <br />' INST MAX ' I I Contingent ( GRAB