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PERMITTEE NAME/ADDRESS (Include Facility Name/Locabon 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 MWDO/YYYY MWOD/YYYY 10/01/2013 1 1 10/31/2013 Form Approved OMB No. 2040 -0004 DMR Mailing ZIP CODE: 81424 -0535 MINOR GUNIS SEDIMENT POND TO ELK CREEK External Outfall No Discharge 1P NAMEITITLE PRINCIPAL EXECUTIVE OFFICER 1 oemfy under penalty or law that this document and afi attachments mere prepared ur W my drecoon or TELEPHONE DATE supervsion n accordance with a system destgned to assure that quaKed personnel property gamer and aWate the information submitted Based on my xgwry of the person or persons who manage the 0 /. 1 w (,r system, or those persons deactly responside for gathersg the information the reformation aubmdled s, r1 r �^ to the best of my knoWedge and behat true, accurate, and complete I am aware that there we Qty 4 j� 6 t!(, pres 64 h semficant penalbes for submitting take information, indumre the possib" or fine and impnsonmem for GNATURE OF PRINC L EXECUTIVE OFFICER OR /'V 9�/ -��+0 "Ow' "g v10µ OAs AUTHORIZED AGENT TYPED OR PRINTED � AREA coa NUMBER COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & 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 IA.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 QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER 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 0 Effluent Gross PERMIT REQUIREMENT * "'" "' **• "• *' *••* *"*""* Req. Mon. 30DA AVG Req. Mon. DAILY MX mUL Monthly GRAB 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 Effluent Gross PERMIT REQUIREMENT ••**•' •"'•• " "'•" ""**` "•• "" 10 INST MAX mg/L Contingent GRAB Flow, in conduit or thru treatment plat SAMPLE • *•'•• '•'•*" '*•••• *• *• "• MEASUREMENT 500501 0 Effluent Gross PERMIT REQUIREMENT Req. Mon. 30DA AVG Req. Mon. DAILY MX MGD * ""• • "'**• " """ *'•*** Monthly INSTAN Oil and grease visual SAMPLE "* ***• ""• * *• ••*••* **•••* •••••• MEASUREMENT 8406610 Effluent Gross PERMIT I REQUIREMENT *'• "• Req. Mon. INST MAX Y =1;N =0 """" •'*"' * *•*`• **'•*' Monthly VISUAL NAMEITITLE PRINCIPAL EXECUTIVE OFFICER 1 oemfy under penalty or law that this document and afi attachments mere prepared ur W my drecoon or TELEPHONE DATE supervsion n accordance with a system destgned to assure that quaKed personnel property gamer and aWate the information submitted Based on my xgwry of the person or persons who manage the 0 /. 1 w (,r system, or those persons deactly responside for gathersg the information the reformation aubmdled s, r1 r �^ to the best of my knoWedge and behat true, accurate, and complete I am aware that there we Qty 4 j� 6 t!(, pres 64 h semficant penalbes for submitting take information, indumre the possib" or fine and impnsonmem for GNATURE OF PRINC L EXECUTIVE OFFICER OR /'V 9�/ -��+0 "Ow' "g v10µ OAs AUTHORIZED AGENT TYPED OR PRINTED � AREA coa NUMBER COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & 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 IA.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