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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 012-A <br />PERMIT NUMBER DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />FROM 02101/2010 TO 02/28/2010 <br />Forrn Approved <br />OMB No. 2040-0004 <br />DMR Mailing ZIP CODE: 81424-0535 <br />MINOR <br />GUNIS <br />SEDIMENT POND TO ELK CREEK <br />External Outfall <br />No Discharge <br /> QUANTITY OR LOADING QUALITY OR CONCENTRATION E OFAQNALYSIS STYPEE <br />PARAMETER <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE «.... ,.«.. ,..... ...... <br /> MEASUREMENT <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 /> MEASUREMENT <br />0053010 <br /> <br />Effluent Gross PERMIT <br /> <br />REQUIREMENT <br />»••» <br />«», <br />•.,.•. <br />«.«. 35 <br /> <br />30DA AVG 70 <br /> <br />DAILY MX mg/L <br /> <br />Monthly <br /> <br />GRAB <br />Solids, settleable SAMPLE ....,. <br /> MEASUREMENT <br />00545 1 0 PERMIT Req. Mon. <br />30DA AVG Req. Mon. <br />DAILY MX mUL <br />Monthly <br />GRAB <br />Effluent Gross REQUIREMENT <br />Iron, total (as Fe) SAMPLE .. »».. ...... «... <br /> MEASUREMENT <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 <br />PERMIT <br />REQUIREMENT ..,.« ..»., .,.... .«... ,..' 10 <br />INST MAX mg/L <br />Contingent <br />GRAB <br />Flow, in conduit or thru treatment plant SAMPLE <br /> MEASUREMENT <br />50050 1 0 <br />Effluent Gross PERMIT <br />REQUIREMENT Req. Mon. <br />30DA AVG Req. Mon. <br />DAILY MX Mgal/d ••"'• """ """ '""•' <br />Monthly <br />INSTAN <br />Oil and grease visual SAMPLE ,..... <br /> MEASUREMENT <br />84066 1 0 PERMIT Req. Mon. <br />INS MAX Y=1;N=0 "'•'• .,"" '•"" ' "" <br />Monthly <br />VISUAL <br />Effluent Gross REQUIREMENT <br /> <br /> <br />ECUTIVE OFFICER <br />NAMEITITLEPRINCIPAL EX i Benin maR p naby ?ri.w m n m : aoemnem ana a menu weR prrpena m ae my a : an or <br /> <br />m•em,esom the <br />he and <br />aa.n«w;m <br />) <br /> <br />- TELEPHONE DATE <br />9 P. -lueth-f <br />iz <br />,B d on <br />p -nn t <br />evaluate the infarrrution whmived. Baud an my inquiry o of the Ne person or p <br />who mansgc the ? <br /> d, in <br />sysum, or those parsons dir-i1 responsible for garbling the mfan fit a tM dm rh rioercn ue significant submined is. <br />w aw <br />true, <br />and <br />cam <br />I am <br />U / ?? 70 7 ?/? 7 D O / T <br />C <br />V - 1o1 iol submuiniu, ning false infur,ruti 1.1 i. 1ian <br />ibilihty o oryf <br />f and i d u <br />including ng 1 the <br />pov <br />mpriwnn,em for krrowing <br />IN- <br /> , <br />aiolanom. SIGNA E OF PRINCIPAL EXECUTI OFFICER OR <br /> <br />TYPED OR PRINTED <br />AUTHORIZED AGENT AREA GsaW NUMBER MMIDD/YYYY <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />TSS i3 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 /> IA.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.01106) Previous editions may be used. Page 1