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<br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)
<br />DISCHARGE MONITORING REPORT (DMR)
<br />Form Appioveo
<br />OMB No. 2040-0004
<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 007-A
<br />PERMIT NUMBER DISCHARGE NUMBER
<br />MONITORING PERIOD
<br />MM/DD/YYYY MM/DDIYYYY
<br />FROM 04/01/2011 TO 04/30/2011
<br />DMR Mailing ZIP CODE: 81424-0535
<br />MINOR
<br />GUNIS
<br />SEDIMENT POND TO HUBBARD CREEK
<br />External Outfall
<br />No Discharge
<br />
<br />
<br />
<br />ARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO.
<br />
<br />
<br />EX
<br />FREQUENCY
<br />
<br />OF f ANALYST aNUYSts
<br />
<br />SAMPLE
<br />TYPE
<br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS
<br />pH SAMPLE ...»• ..».. .»„, „.„,
<br /> MEASUREMENT
<br />00400 1 0 PERMIT 6.5 9 SU
<br />Effluent Gross REQUIREMENT MINIMUM MAXIMUM Monthly INSITU
<br />Solids, total suspended SAMPLE ....,,
<br /> MEASUREMENT
<br />0053010 PERMIT „,,,, „,,,, 35 70 mg/L
<br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX Monthly GRAB
<br />Solids, settleable SAMPLE
<br /> MEASUREMENT
<br />00545 1 0 PERMIT „,,,' Req. Mon. Req. Mon. mUL
<br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX Monthly GRAB
<br />Iron, total (as Fe) SAMPLE ... ., ... „.,.
<br /> MEASUREMENT
<br />0104510 PERMIT ",,,, ,,, 3500 7000 ug/L
<br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX Monthly GRAB
<br />Oil and grease SAMPLE
<br /> MEASUREMENT
<br />0358210 PERMIT `••.,. ••„» „,•„ »•„• •»•,
<br />•
<br />mg/L
<br />Effluent Gross REQUIREMENT INST MAX Contingent GRAB
<br />Flow, in conduit or thru treatment plant SAMPLE
<br /> MEASUREMENT
<br />500501 0 PERMIT Req. Mon. Req. Mon. MgaUd "'•'• •••••• •••••• •,••„
<br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX Monthly INSTAN
<br />Oil and grease visual SAMPLE ,.....
<br /> MEASUREMENT
<br />840661 0 PERMIT Req. Mon. Y=1;N=0 "•`•• ••"" •••••• ••••••
<br />Effluent Gross REQUIREMENT INST MAX Monthly VISUAL
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<br />n SIGNAT E OF PRINCIPAL EXECUTI OFFICER OR
<br />TYPED OR PRINTED AUTHORIZED AGENT •RFA Cod. NUMBER MM/DDIYYYY
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<br />TSS & 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 I.A.1,PP 4-5, AND
<br /> 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 REPRTD.
<br />EPA Form 3320-1 (Rev.01106) Previous editions may be used. Page t
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