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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)
<br />DISCHARGE MONITORING REPORT (DMR)
<br />PERM ITTEE NAME/ADDRESS (Include Facility Name/Location if Different)
<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 007-A
<br />PERMIT NUMBER DISCHARGE NUMBER
<br />MONITORING PERIOD
<br />MM/DD/YYYY MM/DDIYYYY
<br />FROM 03/01/2010 TO 03/31/2010
<br />Form Approved r
<br />OMB No. 2040-0004
<br />DMR Mailing ZIP CODE: 81424-0535
<br />MINOR
<br />GUNIS
<br />SEDIMENT POND TO HUBBARD CREEK
<br />External Outfall
<br />No Discharge
<br />ATTN: James T. Cooper, EVP
<br />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION ENO. X
<br />E FREQUENCY SAMPLE
<br />TYPE
<br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS
<br />pH SAMPLE
<br /> MEASUREMENT
<br />0040010 PERMIT „,,,, 6.5 `•'•~ 9 SU
<br />Effluent Gross REQUIREMENT MINIMUM MAXIMUM Monthly INSITU
<br />Solids, total suspended SAMPLE
<br />'~•»
<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. mLJL
<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 />
<br />MEASUREMENT „•,,,
<br />0358210 PERMIT „,,,, „"" "•"` 10 mg/L
<br />Effluent Gross REQUIREMENT INST MAX Contingent GRAB
<br />Flow, in conduit or thru treatment plant SAMPLE ,,,,,,
<br /> MEASUREMENT
<br />50050 1 0 PERMIT Req. Mon. Req. Mon. Mgalld '~•~ ••'~' •'••« •»•••
<br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX Monthly INSTAN
<br />Solids, total dissolved SAMPLE ,
<br />«,,
<br /> MEASUREMENT ,
<br />
<br />702951 0 PERMIT „,,,' Req. Mon. Req. Mon. mg/L
<br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX Quarterly GRAB
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<br />. SIGNA E OF PRINCIPAL EXECUTI OFFICER OR
<br />TYPED OR PRINTED AUTHORIZED AGENT AREA Cody NUMBER MMMoIYYYY
<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 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.01/06) Previous editions may be used. Page 1
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