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PERMIT-TEE NAME/ADDRESS (include Facility Name/Locabon it Different) NAME: Oxbow Mining LLC ADDRESS: PO Box 535 Somerset, CO 81434 -0535 FACILITY: SANBORN CRK 8t 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 016 -A PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD MM/DD/YYYY MM/DDYY 02101 /2014 /YY02/28/2014 Form Approved OMB No. 2040 -0004 DMR Mailing ZIP CODE: 81424-0535 MINOR GUNIS SURFACE RUNOFF TO ELK CREEK External Outfall No Discharge NAMEITITLE PRINCIPAL EXECUTIVE OFFICER 1 cerbfy under penalty of law that this document and all attachments were prepared under my direction or TELEPHONE DATE supeNsmn in accordance with a system desgned to assure that qualified personnel Property the and valuate the mtormabon submitted Based on my inquiry of me person or persons who manage e \ 14 d y system at those persons directly responsible for gathering the mtormabon, the information submitted s 1 to the best of my knowledge arm cenet true accurate and complete I am aware that there are A ' / 7r C51 h I' sgnmcam penalties for submrtbrg tale information includbg me a—bdny, at fine and imprisonment fall SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR TYPED OR PRINTED nomngwolmns AUTHORIZED AGENT AReACOde NUMBER z4lyyyy COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR 1 HR PRECIP EVENT;SETTLEABLE SOLIDS LIMITS 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 RPTD. EPA Form 3320 -1 (Rev.01 106) 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 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 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 PERMIT ** * *" Req. Mon. Y =1;N =0 '*" ** `* "" `*' * ** *" *" Monthly VISUAL Effluent Gross REQUIREMENT INST MAX NAMEITITLE PRINCIPAL EXECUTIVE OFFICER 1 cerbfy under penalty of law that this document and all attachments were prepared under my direction or TELEPHONE DATE supeNsmn in accordance with a system desgned to assure that qualified personnel Property the and valuate the mtormabon submitted Based on my inquiry of me person or persons who manage e \ 14 d y system at those persons directly responsible for gathering the mtormabon, the information submitted s 1 to the best of my knowledge arm cenet true accurate and complete I am aware that there are A ' / 7r C51 h I' sgnmcam penalties for submrtbrg tale information includbg me a—bdny, at fine and imprisonment fall SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR TYPED OR PRINTED nomngwolmns AUTHORIZED AGENT AReACOde NUMBER z4lyyyy COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR 1 HR PRECIP EVENT;SETTLEABLE SOLIDS LIMITS 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 RPTD. EPA Form 3320 -1 (Rev.01 106) Previous editions may be used. 10/17/2013 Page 1