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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />PERM ITTEE 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 />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 02/01/2011 TO 02/28/2011 <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 />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION N <br />O. FREQUENC SAM <br />P <br />LE <br /> E S P <br />E <br /> <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE <br />" <br /> MEASUREMENT „" "`„• """ <br />004001 0 <br /> <br />Effluent Gross PERMIT 6.5 .,,»• 9 SU <br /> REQUIREMENT MINIMUM MAXIMUM Monthly INSITU <br />Solids, total suspended SAMPLE <br />"` <br /> MEASUREMENT „• """ "" ' <br />0053010 <br /> <br />E <br />ffluent Gross PERMIT """ '•"" '••»• •••••• <br />35 <br />70 <br />mg/L <br /> REQUIREMENT 30DA AVG DAILY MX Monthly GRAB <br />Solids, settleable SAMPLE <br /> <br />MEASUREMENT »»„ <br />••»" <br />""" <br />""" <br />005451 0 <br /> <br />Effluent Gross PERMIT a,"" """ """ "'••' Req. Mon. Req. Mon. mUL <br /> REQUIREMENT 30DA AVG DAILY MX Monthly GRAB <br />Iron, total (as Fe) SAMPLE <br /> MEASUREMENT '•„" "•"' """ <br />0104510 <br /> <br />Effluent Gross PERMIT """ '•"" •'•"' ""`• 3000 6000 ug/L <br /> REQUIREMENT 30DA AVG DAILY MX Monthly GRAB <br />Oil and grease SAMPLE <br /> MEASUREMENT <br />0358210 <br /> <br />Effluent Gross PERMIT """ """ ••••" •••••• •••••• <br />10 <br />mglL <br /> REQUIREMENT <br />MAX <br />INST <br />Contingent <br />GRAB <br />Flow, in conduit or thru treatment plant SAMPLE <br /> MEASUREMENT "'»• •••••• <br />500 <br />501 0 <br />Effluent Gross PERMIT <br />REQUIREMENT Req. Mon. <br />30DA AVG Req. Mon. <br />DAILY MX MgaUd '»••' •••••• ••*»• <br />„••, <br /> Monthly INSTAN <br />Oil and grease visual SAMPLE <br /> <br />MEASUREMENT ,.,,,, <br />840661 0 <br /> <br />Effluent Gross PERMIT Req. Mon. Y=1;N=0 "'••' •*_-•- <br />?•••„ <br />???• <br />, REQUIREMENT INST MAX Monthly VISUAL <br />i N MEITITLEPR CIPALEXECUTIVEOFFICER I"'ofy-der pemlryOf Imthat dti.documctNW adlaftchre -pnv d ndamy di,eefnOr <br />supwiston m rdance -1, a system designed w assure that qualified personrcl roperly gather and <br />TELEPHONE DATE <br />evaluate the mfom m. d. mm d. Based o y inquiry of the perso persons who manage she <br />ryy or those pcrsom ducal, re -Oble f« gad,mng mf-uon, the mf anon submined is. <br />C w the best of my knowlodge and beher, we, 7-, and -plete. I am swam thm dKre are aigmficam 9?P 9z 9 -3i o 3 /o i? <br />nG <br />G ` . s penalties (Or mbrmUmg false id o 1- including the possibility of f e and imprisonment fm knowing <br />a'„ lanma. SI TURE OF PRINCIPAL EXECU VE OFFICER OR <br />TYPED OR PRINTED AUTHORIZED AGENT AREA Cud. NUMBER MM/oon'YYY <br />i 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 ROMNTS. TDS MONITORING - SEE PART VI.A.2.G OF RATIONALE. 30 DAY AVG IS HIGHEST MONTHLY AVG. DURING PERIOD RPTD <br />f <br />EPA Form 3320-1 (Rev.01106) Previous editions may be used. <br />Papa 1