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PERMITTEE NAME/ADDRESS (include Facility Name/- oca6on if Different) NAME: Oxbow Mining LLC ADDRESS: PO Box 535 Somerset, CO 81434 -0535 FACILITY: SANBORN CRK & ELK CRK MINES LOCATION: 3737 HIGHWAY 133 SOMERSET, CO 81434 ATTN Mike Ludlow Exec VP NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) DISCHARGE MONITORING REPORT (DMR) C00000132 012 -A PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD MMIDD/YYYY MM /DD/YYYY 12/01/2013 12/31/2013 Form Approved OMB No. 2040 -0004 DMR Mailing ZIP CODE: 81424-0535 MINOR GUNIS SEDIMENT POND TO ELK CREEK External Outtall / No Discharge NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I un'h uhaer Penally of law that this document and all attachments were Prepared under my direction or supervrsan in accordance with a system designed to assure that qualified Personnel properly gather and QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER t INy V' - EX OF ANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pH SAMPLE .,..... ...... ...... ...... MEASUREMENT 0040010 PERMIT ••'•" "• "• •'•'•' 6.5 " " -' 9 SU Monthly INSITU Effluent Gross REQUIREMENT MINIMUM MAXIMUM Solids, total suspended SAMPLE " "`• " "•` ••••" "••`• MEASUREMENT 0053010 PERMIT ...... ... •`•`•• 35 70 mg /L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, settleable SAMPLE `• "•' '• "•• " "` MEASUREMENT 005451 00545 1 0 PERMIT •`••'• • "'•• '• "" " "•` Req. Mon. Req. Mon. mUL Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Iron, total [as Fe] SAMPLE " "' ••`••' ' -••'- -'•••- MEASUREMENT 0104510 PERMIT ... •'•'•• '• "'• 3000 6000 ug/L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Oil and grease SAMPLE •••••' -•••`• •• ^•' -• - -•- ` - -••• MEASUREMENT 0358210 PERMIT `•-^" ••••'• ••••" •••'•• ' -•••' 10 mg /L Contingent GRAB Effluent Gross REQUIREMENT INST MAX Flow, in conduit or thru treatment plat SAMPLE ••• -•• •'•••• -•'••• •••`• MEASUREMENT 50050 1 0 PERMIT Req. Mon. Req. Mon. MGD " "" "••" • " "• ""•- Monthly INSTAN Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, total dissolved SAMPLE " "" ••'•" •` -• -- • •`• MEASUREMENT 70295 1 0 PERMIT "• "' • "'•` '•• "` • " "' Req. Mon. Req. Mon. mg /L Quarterly GRAB Effluent Gross REQUIREMENT QRTR AVG DAILY MX NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I un'h uhaer Penally of law that this document and all attachments were Prepared under my direction or supervrsan in accordance with a system designed to assure that qualified Personnel properly gather and TELEPHONE DATE etc aluate the infofmatan submitted Based on my mquvy of the person or persons who manage the system or loose persons directly responsible for gathering the mtormanon, the mtormatan submitted w. to me best of my knowledge and belief. true. accurate. and complete. I am ay are that Mere are sgmhwnt penaNa for submdorg fake rntormatmn . including the possibility of fine and imprisonment t t INy V' - ( ` • ' r \ (�\ / ( �`i, µ1-- ' 9z9 —s�o 6 o� 63 z�r SIGNATURE OF PRINdIPAL EXECUTIVE OFFICE40RA TYPED OR PRINTED "..rg vio1a° AUTHORIZED AGENT ARFl Code NUMBER MID COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS 8 TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR <= 10YR,24HR PRECIP EVENTSETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVENT -SEE I.A.1,PP 4 -5, AND I.A.2, P. 5 FOR RQMNTS.TDS MONITORING -SEE PART VI.A.2.G OF RATIONALE. 30 DAY AVG. IS HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. EPA Form 3320 -1 (Rev.01106) Previous editions may be used. 10/17/2013 Page 1