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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 81434-0535 <br />FACILITY: SANBORN CRK & ELK CRK MINES <br />LOCATION: 3737 HIGHWAY 133 <br /> SOMERSET, CO 81434 <br />000000132 015-A <br />PERMIT NUMBER DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />FROM 10/01/2010 TO 10/31/2010 <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 Discharge <br />ATTN: James T. Cooper, EVP <br />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION EX FREQUENCY <br />OF ANALYSIS STYPPEE <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 /> MEASUREMENT <br />0053010 PERMIT ...... 35 70 mg/L <br />Effluent Gross REQUIREMENT 30DA AVG MX 7D AV Monthly GRAB <br />Iron, total (as Fe) SAMPLE ««« ,»». «.„• <br /> MEASUREMENT <br />0104510 PERMIT """ """ """ •""• 3000 6000 ug/L <br />Effluent Gross REQUIREMENT 300A AVG DAILY MX Monthly GRAB <br />Oil and grease SAMPLE <br /> MEASUREMENT <br />0358210 PERMIT .».» .,»,< .»». .»... ».» <br />. <br />T M <br />mglL <br />Effluent Gross . REQUIREMENT INS <br />AX Contingent GRAB <br />Flow, in conduit or thru treatment plant SAMPLE <br />""" <br /> MEASUREMENT <br />5005010 PERMIT Req. Mon. Req. Mon. MgaUd <br />.».« <br />...... <br />...... <br />...... <br />Effluent Gross REQUIREMENT 30DAAVG DAILY MX Monthly INSTAN <br />Oil and grease visual SAMPLE .«,.. <br /> MEASUREMENT <br />84066 1 0 PERMIT Req. Mon. Y=1;N=0 "»» '••'•• •-••-• <br /> <br />Effluent Gross <br />REQUIREMENT <br />INST MAX F77 1 <br />Weekly <br />VISUAL <br />ITLE PRINCIPAL E CUTIVE OFFICER ;""in derp urynf law that dux Jo ument ands lamchmenb we apnpnra ..drr mydi-i- <br />upmc i?n in ac-dan¢ with -, .yem dengncd w assure thatquahf,,d pcnonncl properly gather and <br />l <br />TELEPHONE <br />DATE <br /> <br />• ^ <br />/ <br />) J ?a <br />uata the mfomtauon sub-..d Based w my naluuy of the perwn or persons w" -" the <br />rynem, m those pcrwd d?rccdy rcspuruibk for gathering the inf doo, Ne mturmarivn subminsd is, <br />w the best of my knnwlaigc and hlief, tmc, accwwe, aM cumplne. 1 am aware dat there are xignifiwm (`J <br />y?7o 4 z f- Sal z <br />Q C" / <br />_ <br />re-> (/L( 1^ prnalnes Cm wbmmmg Gls< infurmatwn, mcludmg the puuibiliry of f rm and unprisotmteut fur km,wing <br />.iolannnx. <br />S ATURE OF PRINCIPAL EXEC TIVE OFFICER OR <br />TYPED O PRINTED AUTHORIZED AGENT -card. NUMBER MMIDD/YYYY <br />laummmim 1 J AIYu r-Ar LAIYA 1 iunl ur AN T viu LA 1 iumj ttteTerence an anacnments nere) <br />30 DAY AVERAGE IS HIGHEST MONTHLY AVERAGE DURING PERIOD REPORTED. OIL & GREASE - SEE 1.13.1.D. <br />EPA Form 3320-1 (Rev.01/06) Previous editions may be used. Page 1