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Y <br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) Form Approved <br />DISCHARGE MONITORING REPORT (DMR) OMB No. 2040.0004 <br />PERMITTEE NAME/ADDRESS (Include Facility Name/Locat/on if Di(femnt) <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 016-A <br />PERMIT NUMBER DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />FROM 01/01/2011 TO 01/31/2011 <br />DMR Mailing ZIP CODE: 81424-0535 <br />MINOR <br />GUNIS <br />SURFACE RUNOFF TO ELK CREEK <br />External Outfall <br />No Discharge <br />PARAMETER QUAN TITY OR LOADING Q UALITY OR CONC ENTRATION NO. FREQUENCY SAMPLE <br /> YSIS <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE <br /> <br />MEASUREMENT ,.,,., <br />`•••'• <br />'»«` <br />"„« <br />0040010 <br /> <br />Effluent Gross PERMIT """ "»» »•'» 6.5 •»'» 9 SU <br /> REQUIREMENT MINIMUM <br />MAXIMUM <br />Monthly <br />INSITU' <br />Solids, total suspended SAMPLE <br /> <br />MEASUREMENT „•,,, <br />""» <br />'««` <br />•«„' <br />0053010 <br /> <br />E <br />ffluent Gross PERMIT .'•", `»»• ••*» <br />35 <br />70 <br /> <br />mg/L <br /> REQUIREMENT 30DA AVG DAILY MX Monthly GRAB <br />Solids, settleable SAMPLE <br /> MEASUREMENT '«•" `«"` """ <br />00545 1 0 <br /> <br />Effluent Gross PERMIT <br />REQUIREMENT "«" •"" »»•' <br />..a <br />'» Req. Mon. <br />30DA AVG Req. Mon. <br />DAILY MX mUL <br />Monthly <br />GRAB <br />Iron, total (as Fe) SAMPLE <br /> MEASUREMENT <br />0104510 <br /> <br />Effluent Gross PERMIT <br />REQUIREMENT «"" •••»• <br />30DA AVG <br />DAILY ?MX <br />Ug2 <br />Monthly <br />GRAB <br />Oil and grease SAMPLE <br /> MEASUREMENT <br />0358210 I <br /> PERMIT """ '•»" `»•~ •»••• <br />?••••• <br />Effluent Gross REQUIREMENT INST 10 <br />MAX mglL Contingent GRAB <br />Flow, in conduit or thru treatment plant SAMPLE <br /> MEASUREMENT '«"' "'»' •~••• ••--•• <br />50050 1 <br />0 <br />Effluent Gross PERMIT <br />REQUIREMENT Req. Mon. <br />30DA AVG Req. Mon. <br />DAILY MX MgaVd •••'» ••»•• <br />...»• <br />•?" <br /> Monthly INSTAN <br />Oil and grease visual SAMPLE <br /> <br />MEASUREMENT •,,,,. <br />""« <br />"`»' <br />•»» <br />•»--• <br />84066 1 0 <br /> <br />Effluent Gross PERMIT "«" Req. Mon. Y=1;N=0 •»••' •••••• <br />»»» <br />••?» <br /> REQUIREMENT INST MAX Monthly VISUAL <br />MGIItLEPRINCIPA EXECUTIVE OFFICER """' "n°°"°''rrotuwwrmnaocmnrneanaallana?m,mnew yre d,n,dermydiren;onor <br />Ynperv m `aa, ftha'Y`u:'nd°ig"`'ah.y"'liema'.°""?? varlrg:rl?r,nd <br />evaluw< [he ivfwmation submi-d <br />Based on m <br />io <br />u" of th <br />TELEPHONE <br />DATE <br /> . <br />q <br />e person or persons manage the <br />Y <br />system, or chose persons direalr responsible fm pdwting the info tid the in! ion submiacd is <br />Q/1rY/ <br />Q/J / <br />I? <br />Cl r I . <br />uve <br />, accu 1, ad I- 1 d- there me sificant <br />ies for subminluding the possibility f f and im <br />riso <br />f <br />6 <br />i , f O <br />• ? / Z p?• <br />5'/ ZZ <br /> <br />TYPED R PRINTED p <br />mncnt <br />mw <br />r <br />ng <br />. <br />t SIGNA E OF PRINCIPAL EXECUTI OFFICER OR <br /> - AUTHORIZED AGENT ?BFa coa. NUMBER MWDDNYYY <br />COMMENTS AND EXPLANATION OF ANY VIOLATIO NS (Ref <br />ll <br />erence a <br />attachments here) <br />TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR <=IOYR,24 HR PRECIP EVENT;SETTLEABLE SOLIDS LIMITS MAY <br />FOR ROMNTS. TDS MONITORING-SEE PART VIA.2.G OF RATIONALE <br />30 DAY AVG IS HIGHEST MONTH BE WAIVED FOR >10YR,24HR EVENT-SEE IA.1 <br />PP 4-5 <br />AND I <br />A <br />P <br />2 <br />5 <br />. <br />LY AVG DURING PERI OD RPTD. , <br />, <br />. <br />. <br />. <br />., <br />EPA Form 3320.1 (Rev.01106) Previous editions may be used. <br />Page 1