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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />PERMITTEE 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 017-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 />SURF RUNOFF TO N. FK GUNIS RIV <br />External Outfall <br />No Discharge <br /> QUANTITY OR LOADING QUALITY OR CONCENTRATION E OFANALYSIIS STYPEE <br />PARAMETER <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE •»... ».... .,..., ...». <br /> MEASUREMENT <br />004001 0 <br /> <br /> <br />Effluent Gross PERMIT <br /> <br /> <br />REQUIREMENT ` "" »?~?? •»»• <br />6.5 <br />MINI <br />MUM <br /> <br />•e•r•• <br />9 <br />MAXIMUM <br /> <br />SU <br /> <br />Monthly <br /> <br />INSITU <br />Solids, total suspended SAMPLE .._.,, ..._.. ...». ...... <br /> MEASUREMENT <br />0053010 PERMIT """ """ """ 35 <br />30DA AVG 70 <br />DAILY MX mg/L <br />Monthly <br />GRAB <br />Effluent Gross REQUIREMENT <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 />01045 1 0 PERMIT =""` 3000 <br />30DA A VG 6000 <br />DAILY MX ug/L <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 />»?» <br /> MEASUREMENT <br />50050 1 0 PERMIT Req. Mon. Req. Mon. Mgal/d ,•"" <br />Monthly <br />INSTAN <br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX <br />Oil and grease visual SAMPLE ...... »••.. ...... ...... ....» <br /> MEASUREMENT <br />840661 0 PERMIT Req. Mon. Y=1;N=0 <br />Monthly <br />VISUAL <br />Effluent Gross REQUIREMENT INST MAX <br /> <br />N MEITITLE PRINCIPAL EXECUTIVE OFFICER I mnify node, F-ky of law cut this d«umem asd all aeachments acre pp. .d two y dirmlim r <br />up m- in accordance with a system designed w assort that qualified personnel pmpuy gmhtt end <br />/? TELEPHONE DATE <br /> evaluate the mfomution submitted. Buell un my inquiry of die {rersoo or persons who manage dtc „ <br /> <br />- system, or those persons dinxt , responsible fur p6wnng the infomation, she mil non wwinsd is, <br />and complete. t nn aware dos here are significant <br />o he best of my knowledge and b lief <br />n e <br />accurate <br />q 7v 9Z9-5I z <br />0 9 _ / <br />Pr . <br />, <br />. <br />peoeitles for submitting false information, im:luding the possibility of f and impnsottmem for krwwing <br />s;nla,tons. <br />SIGNA E OF PRINCIPAL EXECU OFFICER OR <br />TYPED OR PRINTED AUTHORIZED AGENT AREA cod. NUMBER MM/DDIYYYY <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIES FOR <=10YR,24HR PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVERT-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 RPTD <br />EPA Forth 3320-1 (Rev.01106) Previous editions may be used. Page 1