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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)
<br />DISCHARGE MONITORING REPORT (DMR)
<br />PERM ITTEE NAMEIADDRESS (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 />ATTN: James T. Cooper, EVP
<br />000000132 013-A
<br />PERMIT NUMBER DISCHARGE NUMBER
<br />MONITORING PERIOD
<br />MM/DD/YYYY MM/DD/YYYY
<br />FROM 04/01/2010 TO 04/30/2010
<br />Form Approved
<br />OMB No. 2040-0004
<br />DMR Mailing ZIP CODE: 81424-0535
<br />MINOR
<br />GUNIS
<br />RUNOFF TO N FORK GUNNISON R.
<br />External Outfall
<br />No Discharge
<br />
<br />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO.
<br />EX FREQUENCY
<br />OF ANALYSIS SAMPLE
<br />TYPE
<br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS
<br />pH SAMPLE
<br /> MEASUREMENT
<br />
<br />0040010
<br />Effluent Gross PERMIT
<br />REQUIREMENT ...... """ "'•" 6.5
<br />MINIMUM •`•"` 9
<br />MAXIMUM SU
<br />Monthly
<br />INSITU
<br />Solids, total suspended SAMPLE
<br />'«»'
<br /> MEASUREMENT ••""
<br />
<br />0053010
<br />Effluent Gross PERMIT
<br />REQUIREMENT 35
<br />30DA AVG 70
<br />DAILY MX mg/L
<br />Monthly
<br />GRAB
<br />Solids, settleable SAMPLE .,,,,. __,,,, ,,,,,,
<br />
<br />MEASUREMENT ,.,,,,
<br />
<br />005451 0
<br />Effluent Gross PERMIT
<br />REQUIREMENT """ """ '•"" ""•• Req. Mon.
<br />30DA AVG Req. Mon.
<br />DAILY MX mUL
<br />Monthly
<br />GRAB
<br />Iron, total (as Fe) SAMPLE
<br />
<br />MEASUREMENT ......
<br />
<br />0104510
<br />Effluent Gross PERMIT
<br />REQUIREMENT "_,,, ,,,_,= 3000
<br />30DA AVG 6000
<br />DAILY MX ug/L
<br />Monthly
<br />GRAB
<br />Oil and grease SAMPLE »,„,
<br /> MEASUREMENT ......
<br />
<br />0358210
<br />Effluent Gross PERMIT
<br />REQUIREMENT =,,,,, '""' •„•« _»_» ••'••• 10
<br />INST MAX mg/L Contingent GRAB
<br />Flow, in conduit or thru treatment plant SAMPLE
<br /> MEASUREMENT
<br />
<br />500501 0
<br />Effluent Gross PERMIT
<br />REQUIREMENT Rea. Mon.
<br />30DA AVG Rea. Mon.
<br />DAILY MX W.1/d *„?• _»•» »_». ..»,.
<br />Monthly
<br />INSTAN
<br />Oil and grease visual SAMPLE „„„
<br />
<br />MEASUREMENT «... ..._.. ...,., «....
<br />840661 0 """
<br />
<br />Effluent Gross PERMIT
<br />REQUIREMENT Req. Mon.
<br />INST MAX Y=1;N=0 ••"« •_••„
<br />•?
<br />?„
<br />Monthly
<br />VISUAL
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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 />tPA FOrM 3326-1 (ftev.ul/ue) Previous editions may be used. Page i
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