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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />PERMITTEE NAME/ADDRESS (Include Facility Name/Location if Different) <br />NAME: Oxbow Mining LLC <br />ADDRESS: PO Box 535 <br /> Somerset, CO 81434-0535 <br />FACILITY: SANBORN CRK & ELK CRK MINES <br />LOCATION: 3737 HIGHWAY 133 <br /> SOMERSET, CO 81434 <br />ATTN: James T. Cooper, EVP <br />000000132 014-A <br />PERMIT NUMBER DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />FROM 01/01/2011 TO 01/3112011 <br />Form Approved <br />OMB No. 2040-0004 <br />DMR Mailing ZIP CODE: 81424-0535 <br />MINOR <br />GUNIS <br />SURF RUNOFF TO N FK GUNNISON R <br />External Outfall <br />No Discharge <br />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION N <br />O.. aR?YS <br />Y SAM <br />PE E <br /> E I <br />S P <br /> <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE ,•,... <br /> MEASUREMENT <br />0040010 <br /> <br />Effluent Gross PERMIT """ "••" •««• 6.5 "•'« 9 SU <br /> REQUIREMENT MINIMUM MAXIMUM Monthly INSITU <br />Solids, total suspended SAMPLE <br /> <br />MEASUREMENT ,,,•„ <br />0053010 <br /> <br />Effluent Gross PERMIT "«" '«"' •««' •„••• <br />A A <br />70 <br />L <br /> REQUIREMENT 30D <br />VG DAILY <br />MX Monthly GRAB <br />Solids, settleable SAMPLE <br /> <br />MEASUREMENT --- <br /> <br />'•"-' <br /> <br />""" <br /> <br />' ""' <br />005451 0 <br /> <br />Effluent Gross PERMIT <br />REQUIREMENT ""« «`«' '««` •«"' Req. Mon. <br />30DA AVG Req. Mon. <br />DAILY MX mL/L <br />Monthly <br />GRAB <br />Iron, total (as Fe) SAMPLE <br /> MEASUREMENT <br />0104510 <br /> <br />Effluent Gross PERMIT "'•« ""« «`«- •'•••• <br />DAA <br />ug<L <br /> REQUIREMENT 30 <br />VG DAILY MX Monthly GRAB <br />Oil and grease SAMPLE <br /> <br />MEASUREMENT a...., <br />10 <br />03582 <br /> PERMIT """ "«" '«"• ••'•« <br />...... <br />Effluent Gross <br />Effluent <br />REQUIREMENT 10 <br />INST MAX rng/L <br />Contingent <br />GRAB <br />Flow, in conduit or thru treatment plant SAMPLE <br /> MEASUREMENT ,a"" ••`--• ••--- <br />500 <br />50 1 0 <br />Effluent Gros PERMIT Req. Mon. Req. Mon. Mgal/d «•"' •••••• •••«. <br />-«•« <br />s REQUIREMENT 30DA AVG DAILY MX Monthly INSTAN <br />Oil and grease visual SAMPLE <br /> MEASUREMENT '«"' """ •••'« • -• <br />84066 1 0 <br /> <br />Effluent Gross PERMIT Req. Mon. Y=1;N=0 '«•'• •-•••• <br />•„? <br /> REQUIREMENT INST MAX Monthly VISUAL <br />n ML-JUTLEPRINCIPAL (ECUTIVEOFFICER '=Y'nr°wmar°1v°«"°`asoda°ana°'"nm -Pr??«myai?aionm GATE <br />supwt. in xcerdane wrtha mn des,gned m ..ameh., qualified persunnd p pedy TELEPHONE gather aM ?r <br />• esaluare ? iaCop u <br />csubmm syed Based i, my ud ain cf We person ?r porsons who <br />? sys. w thine peraovs drtady respumtble Cw gatlxnng the inturtnanun, the mfmmapun submmed u. <br />m d e ben o(my knowledge and bebef, mu, ac ma e, aM wmp cte ? am awa a tMt d e e a e signifi ant <br />for. 7T JO 7^zq_?, zz D <br />Kar« submirting false m( musiuq including the possrbiliry of f e am impriarmmem r r knowing SIGNA E OF PRINCIPAL EXECUTI OFFICER OR <br />TYPED OR PRINTED a AUTHORIZED AGENT A? caa. NUMBER MM/DOM YY <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 IA.1,PP 4-5, AND <br /> IA2. P. 5 <br />FOR RCMNTS.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