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PERMITTEE NAME /ADDRESS (Include Facility Namekocation if Different) NAME: Oxbow,Mining LLC ADDRESS: PO Box 535 Somer4et, 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) i C00000132 007 -A PER NUMBER DISC RGE NUMBER MONITORING PERIOD MM/DD/YYYY MM /DD/YYYY 12/01/2013 12131/2013 Form Approved OMB No. 2040 -0004 DMR Mailing ZIP CODE: 81424 -0535 MINOR GUNIS SEDIMENT POND TO HUBBARD CREEK External Outfall No Discharge 1 NAME/TITLE PRINCIPAL EXECUTIVE OFFICER l 11, under penally of law that this document and all attachments were prepared urWe, my tluM,on or som—on �n a000rdanoe w,m a system desgned to assure that qualified personnel properly gxner QUANTITY OR LOADING! ` /1 QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER t I Of G•\ EX OF ANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS pHSAMPLE I r ...... ...... ...... ...... gREA Code Nl1MRFR 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 0 PERMIT '•`••' ' ~ "• " "" "' ~' Req. Mon. Req. Mon. mUL Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Iron, total [as Fe) SAMPLE `• "•' •••••' • "`•' '•••'• MEASUREMENT 0104510 i PERMIT ... • " "' " "•" 3500 7000 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 30DA AVG DAILY MX NAME/TITLE PRINCIPAL EXECUTIVE OFFICER l 11, under penally of law that this document and all attachments were prepared urWe, my tluM,on or som—on �n a000rdanoe w,m a system desgned to assure that qualified personnel properly gxner ^ ` /1 TELEPHONE wluafe the information submitted. Based on my inquiry of the person or persons who manage me system. or those directly responsible for the the ` ^ -7 t I Of G•\ persons gathering information, mformatgn submmed R to the best of my tnoyAedge and belief. true. accurate and complete. I am aware t // b F-0 sgnmom perama for submllang fate infrmaton including me possltabty of fine and- pnconment for, SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR I r TYP D OR PRINTED noyarg violations ` AUTHORIZED AGENT gREA Code Nl1MRFR COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT PPLIED FOR <= 10YR,24HR PRECIP EVENT; SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVENT -SEE I.A.1,PP +5, AND I.A.2, P. 5 FOR RQMNTS.TDS MONITORING -SEE ART VI.A.2.G OF RATIONALE. 30 DAY AVG. IS HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. EPA Form 3320 -1 (Rev.OV06) Previous editions may be used. 1 10/17/2013 Page 1