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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM <br />NP <br /> ( <br />DES) 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 />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 & 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 03/01/2010 TO 03/31/2010 No Discharge <br />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE <br /> EX OF ANALYSIS TYPE <br /> <br />pH VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br /> SAMPLE <br />~~ <br /> MEASUREMENT „"" """ ~~~ <br />0040010 <br />Effluent Gross PERMIT <br />,•,. <br />~~ • ~?~* <br />g <br /> <br /> <br />Solids <br />total suspended REQUIREMENT MINIMUM <br />MAXIMUM SU <br />Monthly INSITU <br />, SAMPLE <br /> MEASUREMENT <br />0053010 PERMIT """ '•'•~ <br />k+•~• •••••' <br /> <br />Effluent Gross <br />REQUIREMENT 35 <br />30DA AVG 70 <br />DAILY MX <br />mg/L <br />Monthly GRAB <br />Solids, settleable SAMPLE <br />.•. <br />•' <br /> MEASUREMENT """ """ """~ <br />0054510 <br />Effluent Gross PERMIT <br />REQUIREMENT Req. Mon. <br />t~•" •„,,, Req. Mon. mUL <br /> <br />Iron <br />total (as Fe) 30DAAVG DAILY MX Monthly GRAB <br />, SAMPLE <br /> MEASUREMENT <br />0104510 <br />Effluent Gross PERMIT <br />REQUIREMENT <br />••t`•• ~•~. ,,,», <br />DAA <br />L <br />ug/L <br /> <br />Oil and grease 30 <br />VG DAI <br />Y MX Monthly GRAB <br /> SAMPLE <br />... <br />" <br /> MEASUREMENT """ """ '~" ~_~• <br />0358210 <br />Effluent Gross PERMIT •,,,,' <br />•,,,,,=f??? <br />10 <br /> REQUIREMENT L <br /> <br />Flow, in conduit or thru treatment plant <br />SAMPLE INST MAX Contingent GRAB <br /> MEASUREMENT '~'~ ~~-• »..» ..„» <br />500501 0 <br />Effluent Gross PERMIT <br />REQUIREMENT Req. Mon. Req. Mon. Mgal/d <br />30DA AVG DAILY MX„ •"•~? <br />„»., <br /> <br />Solids, total dissolved <br />SAMPLE Monthly INSTAN <br /> MEASUREMENT <br />7029510 PERMIT <br />~•••* •'*~* •„•", <br />Effluent Gross REQUIREMENT QRT <br />AV DA <br />Y^M L <br /> R <br />G L <br />X Quarterly GRAB <br />TAME/TITLE PRINCIPAL EXECUTIVE OFFICER so nr%rdi penalryoflawthat Nis acu arnt and dla a hmrns ere prepared urd-my di-ion or <br />wpemsion accordance wth a system designed to assure that qualifed <br />rrsonr <br />l <br /> <br /> <br />` p <br />x <br />pmpery gathn,md <br />evaluate rho mfmm - sobminal. Based on my inquiry of the Perron or persons who avenge the <br />sy stem, or those persons dir-ly ponsible fm <br />ahain <br />th <br />i <br />f <br />i <br /> <br />TELEPHONE DATE <br />e g <br />g <br />e <br />n <br />ormat <br />oo, the infomuuon wbmined is, <br />t hebestofmyknowledgeWbe&f, eccurwe <br />Mco <br />ka <br />Iamawarerh <br />h Z <br /> <br />a <br />Y <br />, <br />mp <br />. <br />art <br />ereareignificant <br />prnaBies for submining false iot'armatior, n, including the pssibibry of f and iprisooorenr for kmtw- f <br />9z9'S?Z <br /> <br />TYPED OR 9 <br />SIGNA E O <br />PRINTED F PRINCIPAL EXECUTIVE OFFICER OAUTHORIZED AGENT od . <br />NUMBER MWOD/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,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