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PERMITTEE NAME/ADDRESS (Include Faralfty Namekocadon dDi ferenq 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) 000000132 013 -A PERMIT NUMBER DISCHARGE UM MONITORING PERIOD MM/DD/YYYY MWDO/YYYY 11/01/2013 11/30/2013 Form Approved OMB No. 2040.0004 DMR Mailing ZIP CODE: 81424 -0535 MINOR GUNIS RUNOFF TO N FORK GUNNISON R. External Outfall No Discharge NAME/TITLE PRINCIPAL EXECUTIVE OFFICER f oemry under penally of few that tha document and all 8tlachmen0s were W "red untler my du-bon or supervision m accordance wtr a systamaeagned to assure drat quamed pow relpropedy onew and TELEPHONE DATE ^ akksos the information submdteaL Based on my mquny of the person or persons asro manage the I/ system, or drose persons dueclly respMalbie for gathereg the adormabon, the frfemnahon submMed a. to the best of my kno%%fte and beNef, true accurate, and compote. I am aware that mere are `J V. sgmfiwnt penises for submMng tabs information, including the posebssy of fine and anpraonmerd for SIGNATURE OF PhINICIPAL EXECUTIVE OFFICER OR 7/0 L- knowng vrobhons AUTHORIZED AGENT TYPED OR PRINTED rutEncod. I u"aanrR 1Haf 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 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.01/06) Previous editions may be used. 10/17/2013 Page 1 QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. FREQUENCY SAMPLE PARAMETER EX OFANALYNS 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 0054510 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 500501 0 PERMIT Req. Mon. Req. Mon. MGD '""" "" " " "" """' Monthly INSTAN Effluent Gross REQUIREMENT 30DA AVG DAILY MX Oil and grease visual SAMPLE •• * " "* *•'"*` " "'••` `* "•"" •*•• "• MEASUREMENT 840661 0 Effluent Gross PERMIT REQUIREMENT • * "**` Req. Mon. INST MAX Y =1;N =0 `""" """* •'""` "`"•' Monthly VISUAL NAME/TITLE PRINCIPAL EXECUTIVE OFFICER f oemry under penally of few that tha document and all 8tlachmen0s were W "red untler my du-bon or supervision m accordance wtr a systamaeagned to assure drat quamed pow relpropedy onew and TELEPHONE DATE ^ akksos the information submdteaL Based on my mquny of the person or persons asro manage the I/ system, or drose persons dueclly respMalbie for gathereg the adormabon, the frfemnahon submMed a. to the best of my kno%%fte and beNef, true accurate, and compote. I am aware that mere are `J V. sgmfiwnt penises for submMng tabs information, including the posebssy of fine and anpraonmerd for SIGNATURE OF PhINICIPAL EXECUTIVE OFFICER OR 7/0 L- knowng vrobhons AUTHORIZED AGENT TYPED OR PRINTED rutEncod. I u"aanrR 1Haf 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 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.01/06) Previous editions may be used. 10/17/2013 Page 1