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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) Form Approved <br /> DISCHARGE MONITORING REPORT (DMR) OMB No. 2040-0004 <br />PERMITTEE NAME/ADDRESS (Include Facility Name/Location if Different) <br />NAME: Oxbow Mining LLC <br /> <br />ADDRESS: PO Box 535 000000132 <br />017-A <br />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 SURF RUNOFF TO N. FK GUNIS RIV <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 /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE <br />» <br /> MEASUREMENT ••"" ""•' •••••• <br />0040010 • <br /> <br />Effluent Gross PERMIT <br />REQUIREMENT 6.5 <br />••"•• MINIMUM •••••• 9 <br />MAXIMUM SU <br />Monthly INSITU <br />Solids, total suspended SAMPLE ..,, <br /> MEASUREMENT »•"' """ »•"' <br />0053010 <br />Effluent Gross PERMIT <br />REQUIREMENT """ '••'•' ...... .•..•• <br />35 <br />70 <br />mg/L <br /> <br />Solids <br />settleable 30DA AVG DAILY MX Monthly GRAB <br />, SAMPLE ,,,,,, <br /> MEASUREMENT """ """ `••"` <br />005451 0 <br />Effluent Gross PERMIT <br />REQUIREMENT <br />Mon. <br />•„•' •?•? <br />DA <br />YA <br />mIJL <br /> <br />Iron <br />total (as Fe) 30 <br />A <br />VG DAILY <br />MX Monthly GRAB <br />, SAMPLE <br /> MEASUREMENT <br />0104510 <br />Effluent Gross PERMIT <br />REQUIREMENT <br />. <br />...•,. "`•" ...., •••••• <br />DA A 6000 ug/L <br /> <br />Oil and grease 30 <br />VG DAILY MX Monthly GRAB <br /> SAMPLE ,,., <br /> MEASUREMENT """ """ "•`•• •••° <br />0358210 PERMIT """ "•`•• """ <br />?••• <br /> <br />Effluent Gross <br />REQUIREMENT <br />?•••?• 10 mg/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 Req. Mon. Req. Mon. MgaVd "'•" •• <br />»•• <br />•••••• <br />•••?• <br /> REQUIREMENT 30DA AVG DAILY MX <br /> <br />Solids, total dissolved <br />SAMPLE Monthly INSTAN <br /> MEASUREMENT <br />7029510 PERMIT ...,,. ..•`•` <br />•«.., •~••• <br />Effluent Gross REQUIREMENT CIRTR AVG DAILYIMX mg/L <br /> Quarterly GRAB <br />NAMCJ I I I LC PKINCIPAL EXECUTIVE OFFICER a«mn<m,na rvi,menmm? „.ere prcpaRd myn y sobmined ai« rian er <br />i aan«hrni sytomdesi%dilr usawefththca tiaedpetwnetpropeiygatherand TELEPHONE DATE <br />ev or r thinfose om Vori sooons dircttly a. BWnsasesible y ^9 -in onpersuo or persons w u amge the _? <br />sy_ em_ <br />(or gah e ng he i(o ma oq are information subnined <br />m the ben of my knowkd •e and beh<f. tm<, xccurwe, and cum t I am awar< that there u< signifi<ani ?? / -S?ZZ <br />?r <br />LI K 5 ' pe ulsisy for submitt ng fa1 a inf motion including the pussibiliry of f e and imp wnmem for o <br />TYPED R PRINTED as m t. ms z9 SIGNA E OF PRINCIPAL EXECU OFFICER OR <br />AGENT nREwcod. <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) AUTHORIZED <br />TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIES FOR <=10YR,24HR PRECIP EVENT; SETTLEABLE SOLIDS LIMIT MAY BE WAIVED NUMBER MMIDD/YYYY <br />FOR ROMNTS. TDS MONITORING - SEE PART VI.A.2.G OF RATIONALE. 30 DAY AVG IS HIGHEST MONTHLY AVG. DURING PERIOD RPTD <br />FOR >10YR,24HR EVERT-SEE I.A.1,PP MV AND I.A.2., P 5 <br />EPA Form 3320-1 (Rev.01/06) Previous editions may be used. <br />Page 1