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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />PERMITTEE 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 />ATTN: James T. Cooper, EVP <br />000000132 015-A <br />PERMIT NUMBER DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />FROM 08/01/2010 TO 08/31/2010 <br />Form Approved <br />OMB No. 2040-0004 <br />DMR Mailing ZIP CODE: 81424-0535 <br />MINOR <br />GUNIS <br />DISCHARGE TO ELK CREEK <br />External Outfall <br />No Discharg/ ' <br /> <br />QUANTITY OR LOADING <br />QUALITY OR CONCENTRATION NO. <br />EX FREQUENCY <br />OF ANALYSIS SAMPLE <br />TYPE <br />PARAMETER <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE »».. »..» ».». », .. <br /> MEASUREMENT <br />0040010 PERMIT ,,,,,. ••? •»«• MINI6.5 <br />MUM =„»= 9 <br />MAXIMUM SU Monthly INSITU <br />Effluent Gross REQUIREMENT <br />Solids, total suspended SAMPLE _».» ..»» »•»• •»_» <br /> MEASUREMENT <br />0053010 PERMIT _,_,_= 35 <br />30DA AVG 70 <br />MX 7D AV mg/L <br />Monthly <br />GRAB <br />Effluent Gross REQUIREMENT <br />Iron, total (as Fe) SAMPLE ,».,. •.»•• <br /> MEASUREMENT <br />0104510 PERMIT """ "'*" '«•« `«_« 3 <br />30DA A VG 6000 <br />DAILY MX uglL <br />Monthly <br />GRAB <br />Effluent Gross REQUIREMENT <br />Oil and grease SAMPLE ..»,. »..» .».» .»». •»», <br /> MEASUREMENT <br />0358210 PERMIT „,,,, _,__,_ 10 <br />INST MAX mg/L <br />Contingent <br />GRAB <br />Effluent Gross REQUIREMENT <br />Flow, in conduit or thru treatment plant SAMPLE .»••. ...,,, ._..» .».» <br /> MEASUREMENT <br />50050 1 0 PERMIT Req. Mon. Req. Mon. MgaVd •,,,,• •"'« »•"' <br />Monthly <br />INSTAN <br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX <br />Oil and grease visual SAMPLE ,,.»• ••__» •»•» <br /> MEASUREMENT <br />84066 1 0 PERMIT Req. Mon. <br />INST MAX Y=1;N=0 <br />Weekly <br />VISUAL <br />Effluent Gross REQUIREMENT <br /> <br />N MEITITLE PRI AL ECUTIVE OFFICER I-fy mdetp-Iryoemwthat this d-wandalI-h-ts. pq and nd <my fi-ti <br />-p-Lim i. a«e dm« with a sysem d<.ig-d m a..me that q-1ifi d personnel properly gather :;a / TELEPHONE DATE <br /> evaluate the if-i.. s.b.ww. Based o. my "."y of the person o. persons numge We <br /> sy em, or those parson &u Iy -pomibls fm gathering the mfo.matio., the mf rim ubmiu d is, <br />.ignis<„nt <br />to <br />I am <br />a <br />< <br />n< e <br />e <br />the b<st .fmy,n. <br />e <br />0 W2-5 I Z <br />9 -D 7-/0 <br />t?C V t S l , <br />p <br />. lud including .g . th< p .xiibiht bil.,y <br />and d <br />imp pi <br />k.owiag <br />penalties (a su bmiuinj f false if.- rmati on, r <br />wvmem <br />Cor <br />oC <br />f <br />vi.latims. <br />SIGNAT <br />E OF PRINCIPAL EXECUTIVE OFFICER OR <br />TYPED OR PRINTED AUTHORIZED AGENT AftEA tsar NUMBER MMIDDIYYYY <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />30 DAY AVERAGE IS HIGHEST MONTHLY AVERAGE DURING PERIOD REPORTED. OIL 8 GREASE - SEE I.B.1.1). <br />EPA Form 3320.1 (Rev.01106) Previous editions may be used. Page 1