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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />Form Approved <br />OMB No. 2040-0004 <br />PERM ITTEENAME/ADDRESS (Include Facility Name/Location iiDiffeient) <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 />000000132 015-A <br />PERMIT NUMBER DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />FROM 09/01/2010 TO 09/3012010 <br />DMR Mailing ZIP CODE: 81424-0535 <br />MINOR <br />GUNIS <br />DISCHARGE TO ELK CREEK <br />External Outfall <br />No Discharge <br />ATTN: James T. Cooper, EVP <br />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO S <br />AMPLE <br /> EX OF ANALYSIS TYPE <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE .,..« • <br />""' <br /> <br />MEASUREMENT ,,.,., •..«. <br /> <br />0040010 <br />Effluent Gross PERMIT """ """ ""•' 6.5 •••'•• <br />SU <br /> REQUIREMENT MINIMUM MAXIMUM Monthly INSITU <br />Solids, total suspended SAMPLE ,,.,.. »»„ <br /> <br />MEASUREMENT ,.,,.. »•. <br />0053010 `« "•"' <br /> <br />Effluent Gross PERMIT ...... '•'• 35 70 m L <br /> REQUIREMENT 30DA AVG MX 7D AV Monthly GRAB <br />Iron, total (as Fe) SAMPLE ,,,,,. ,,,,,, <br /> <br />MEASUREMENT •,,,« ,»•:. <br /> <br />0104510 <br />Effluent Gross PERMIT 3000 6000 ugfL <br /> REQUIREMENT 30DA AVG DAILY MX Monthly GRAB <br />Oil and grease SAMPLE ,,..,. <br />»»" <br /> MEASUREMENT '»•" »"" <br /> <br />0358210 <br />E <br />ffluent Gross PERMIT .,"" """ "•"' •«"• -••••• <br />10 <br />mg/L <br /> REQUIREMENT INST MAX Contingent GRAB <br />Flow, in conduit or thru treatment plant SAMPLE <br /> MEASUREMENT <br /> <br />500501 0 PERMIT Req. Mon. Req. Mon. Mgal/d ••••» •..«. ••••« ..«.. <br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX Monthly INSTAN <br />Solids, total dissolved SAMPLE <br /> <br />MEASUREMENT ..,,., <br /> <br />70295 1 0 <br />Effluent Gross PERMIT "" "" Req. Mon. Req. Mon. <br />mg/L <br /> REQUIREMENT ORTR AVG DAILY MX Quarterly GRAB <br />Oil and grease visual SAMPLE ,.,,,, <br /> MEASUREMENT <br />84066 1 0 """ <br /> PERMIT Req. Mon. Y=1;N=0 •~•« -•---• •»••• <br />*•? <br />Effluent Gross REQUIREMENT INST MAX weekly VISUAL <br />N MEITITLE PRINCIPAL EXECUTIVE OFFICER mq ?penany m--1- document and all etaehmenb were prepared under my dvcctian., <br />supervision in -,dwitha system designed m ,sate that qualified personal pproperly gather and <br />enluam the mfomuuanmoce mbmi.l d. Based on my inquiry of the perwn or p_, <br />who tttamsge the <br />--- <br />hose penons diremly responsible forgathering the ivf rioq she infamusion submitted 6. <br />to she best of my knowledge and belief mte, accurete, and complete. I --h-h- are sigmficun <br />?e ? ? ?' (?( penalties for sub llmg false information, including the possibility off and imp-mnent lot km-inl <br />TYPED OR PRINTED siolanons. <br />/J <br />,/ <br />6 TELEPHONE DATE <br />j <br />1 - <br />- n <br />(? <br />.?. 76 - 27.5 -5-04 12-0/a. <br />?a 0 <br />RE OF PRINCIPAL EXECUTIVE OFFICER OR <br />AUTHORIZED AGENT <br />ARE-C-- <br />NUMBER , <br />Mitt! D/YYYY <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />30 DAY AVERAGE IS HIGHEST MONTHLY AVERAGE DURING PERIOD REPORTED. OIL & GREASE - SEE 1.B.1.D. <br />EPA Form 3320.1 (Rev.01106) Previous editions may be used. Page i