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PERMITTEE NAME/ADDRESS (Include Facility Name/Location it 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 014-A PERMff NUMBER— F DISCHARGE NUMBER MONITORING PERIOD MM/DD/YYYY MM/DD/YYYY 02/01/2014 02/2812014 Form Approved OMB No. 2040 -0004 DMR Mailing ZIP CODE: 81424-0535 MINOR GUNIS SURF RUNOFF TO N FK GUNNISON R External Outfall No Discharge NAMEIIITLE PRINCIPAL EXECUTIVE OFFICER I candy under penalty of law that this document and all attachments ware prepared wrier my direction or TELEPHONE DATE supervffiton m accordance with a system designed to assure that quaft<ied personnel properly gather aril 1 Q aluste the mformahon submitted Based on my inquiry of the person or persons who manage the �(/J system bn those parsons dtrectiy responsible for gathenng the mtormabon, the mrormabon submdted is, — ' - re5,40 m the best of my knowledge and beset true accurate and complete I am aware tnat mere are kij- sgn ificantpenalties for sutmatbngfalsemformabon Including Mepossibilnyof firm and 1m pmsonmerafor SIGNATURE OFPRI CIPALEXECUTIVEOFFICEROR 7�� 9�% ✓U WAAWDfYYYY "ON v wotabo"a AUTHORIZED AGENT pREq cdaaaER TYPED OR PRINTED Nu 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 MAYBE WAIVED FOR >10YR,24HR EVENT -SEE I.A.1,PP 4 -5. AND I.A.2, P. 5 FOR RQMNTS.TDS MONITORING -SEE PART VIA.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. 10/1712013 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 004001 0 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 PERMIT "'•** * "`*` **" *` " " ** 3000 6000 ug /L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Oil and grease SAMPLE •"*'* "•"* *"*" "•`*' """ MEASUREMENT 035821 0 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 PERMIT *"'*` Req. Mon. Y=1 ;N=O "`•*' '**"* ""•• "'*" Monthly VISUAL Effluent Gross REQUIREMENT INST MAX NAMEIIITLE PRINCIPAL EXECUTIVE OFFICER I candy under penalty of law that this document and all attachments ware prepared wrier my direction or TELEPHONE DATE supervffiton m accordance with a system designed to assure that quaft<ied personnel properly gather aril 1 Q aluste the mformahon submitted Based on my inquiry of the person or persons who manage the �(/J system bn those parsons dtrectiy responsible for gathenng the mtormabon, the mrormabon submdted is, — ' - re5,40 m the best of my knowledge and beset true accurate and complete I am aware tnat mere are kij- sgn ificantpenalties for sutmatbngfalsemformabon Including Mepossibilnyof firm and 1m pmsonmerafor SIGNATURE OFPRI CIPALEXECUTIVEOFFICEROR 7�� 9�% ✓U WAAWDfYYYY "ON v wotabo"a AUTHORIZED AGENT pREq cdaaaER TYPED OR PRINTED Nu 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 MAYBE WAIVED FOR >10YR,24HR EVENT -SEE I.A.1,PP 4 -5. AND I.A.2, P. 5 FOR RQMNTS.TDS MONITORING -SEE PART VIA.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. 10/1712013 Page 1