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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />PERMITTEE NAME/ADDRESS (Include Facility Namakocation 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 />PARAMETER <br />pH SAMPLE <br /> MEASUREMENT <br />00400 1 0 <br /> <br />Effluent Gross PERMIT <br /> REQUIREMENT <br />Solids, total suspended SAMPLE <br /> MEASUREMENT <br />00530 1 0 <br /> PERMIT <br />Effluent Gross REQUIREMENT <br />Solids, settleable SAMPLE <br /> MEASUREMENT <br />00545 1 0 <br /> PERMIT <br />Effluent Gross REQUIREMENT <br />Iron, total (as Fe) SAMPLE <br /> MEASUREMENT <br />01045 1 0 <br /> PERMIT <br />Effluent Gross REQUIREMENT <br />Oil and grease SAMPLE <br /> MEASUREMENT <br />03582 1 0 <br /> PERMIT <br />Effluent Gross REQUIREMENT <br />Flow, in conduit or thru treatment plant SAMPLE <br /> MEASUREMENT <br />50050 1 0 <br /> PERMIT <br />Effluent Gross REQUIREMENT <br />Solids, total dissolved SAMPLE <br /> MEASUREMENT <br />70295 1 0 <br /> PERMIT <br />Effluent Gross REQUIREMENT <br />000000132 014-A <br />PERMIT NUMBER DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />FROM 03/01/2010 TO 03/31/2010 <br />QUANTITY OR LOADING <br />VALUE VALUE UNITS VALUE <br />...... ...... ....., 6.5 <br />MINIMUM <br />q. Mon. Req. Mon. Mgal/d <br />DA AVG DAILY MX <br />t <br />Form Approved <br />OMB No. 2040-0004 <br />DMR Mailing ZIP CODE: 81424-0535 <br />MINOR <br />GUNIS <br />SURF RUNOFF TO N FK GUNNISON R <br />External Outfall <br />No Discharge <br />IUALITY OR CONCENTRATION NO. <br />E( FREQUENCY <br />OF ANALYSIS SAMPLE <br />TYPE <br />VALUE VALUE UNITS <br /> <br /> <br /> <br /> <br />MAXIMUM SU <br />Monthly <br />INSITU <br /> <br /> <br /> <br />35 <br />30DA AVG 70 <br />DAILY MX mg/L <br />Monthly <br />GRAB <br /> <br /> <br /> <br />Req. Mon. <br />30DA AVG Req. Mon. <br />DAILY MX mUL <br />Monthly <br />GRAB <br /> <br /> <br /> <br />3000 <br />30DA AVG 6000 <br />DAILY MX ug/L <br />Monthly <br />GRAB <br /> <br /> <br />,..... <br /> 10 <br />INST MAX mg/L <br />Contingent <br />GRAB <br /> <br /> <br /> <br /> • Monthly INSTAN <br /> <br /> <br /> <br />Req. Mon. <br />QRTR AVG Req. Mon. <br />DAILY MX <br />mg/L <br />Quarterly <br />GRAB <br />N ElTITLE PRINCIPAL EXECUTIVE OFFICER I -1t) trader penalty of Iaw that thn dm-e., and all avachments inert prepared -de, my d-,ian or <br />supmu,on in acwrdana with a systctn designed w assure that qualified p?errw?rnmsel properly g,'Mand i TELEPHONE DATE <br />evnhule the vf rion subminai. Baud le my .d-m of the person ur who wruge <br />• sysrem, m those persons directly responsible fm gathering the inlormatiuq the infmwtion submitrcd u. <br />top=nc? best of my knowledge and bchc f we. accurate, and wmpktc. I am aware that there are significant 9z 9-s-izZ 0 *114 <br />Ce ? ? lartionsfor mbmiuing false inf rmation, including the possrbiliryof f e amf imprisonment Cor krxtwing <br />?zo?o <br />TYPED OR PRINTED n SIGNA E OF PRINCIPAL EXECU OFFICER OR <br />AUTHORIZED AGENT AReAcod. NUMBER MMIDD/YYYY <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR <=10YR,24HR PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAYBE WAIVED FOR >10YR,24HR EVENT-SEE LAA RP 4-5, AND I.A.2, <br /> 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. <br />Page 1