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PERMITTEE NAME/ADDRESS (Include Facility NameA ocahon 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) 000000132 019 -A PERMIT NUMBER I DIS HAR UMBER MONITORING PERIOD MWDD/YYYY MWDD/YYYY 04/01/2014 1 1 04/30/2014 DMR Mailing ZIP CODE: MINOR Form Approved ' OMB No. 2040 -0004 81424 -0535 GUNIS SURFACE RUNOFF TO HUBBARD CRK External Outfall No Discharge PARAMETER pH SAMPLE QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. EX FREQUENCY OF ANALYSIS SAMPLE TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNITS MEASUREMENT 0040010 Effluent Gross Solids, total suspended PERMIT REQUIREMENT SAMPLE "••••• *• * * ** • "•• *• w * *•.• • *••" . +!!,: 6,5 MINIMUM MINIMUM *•••'* 9 MAXIMUM SU Monthly INSITU MEASUREMENT 005301 0 Effluent Gross Solids, settleable PERMIT REQUIREMENT SAMPLE • * *• *: + *lf +. .. +l.. ,!.! , 35 30DA AVG 70 MX 7D AV mg /L Monthly GRAB MEASUREMENT 005461 0 Effluent Gross Iron, total [as Fe] GRAB PERMIT REQUIREMENT SAMPLE * * *• ** *•• *•• •••••• * *• * +• *•••• •!f•.! ••* *•* ,,,, *• Req. Mon. 30DA AVG Req. Mon. DAILY MX mUL Monthly MEASUREMENT 0104510 Effluent Gross Oil and grease PERMIT REQUIREMENT SAMPLE • *•••* * *•• *• .+f * *+ + * * +!+ +! *.!! +!l.ff ff „!, ! 30DA 3000 AVG 6000 DAILY MX ug /L Monthly GRAB MEASUREMENT 0358210 PERMIT • * *•** +l.f +f ! +fl ++ *•!!» Effluent Gross REQUIREMENT ” "" 10 mg /L Contingent GRAB Flow, in conduit or thru treatment plat SAMPLE * +ff•! Ml1f• INST MAX !!ff•! f!!ff• MEASUREMENT 500501 0 Effluent Gross Oil and grease visual PERMIT REQUIREMENT SAMPLE Req. Mon. 30DA AVG +• * * ** Req. Mon. DAILY MX MGD *'**•* „ *,,, « **f� ,,, * Monthly INSTAN • " "' " " "' MEASUREMENT "• 840661 0 Effluent Gross PERMIT REQUIREMENT • *• *•* Req. Mon. INST MAX I Y =1;N =0 * *!•� ** * *•• �F *��* " ""` Monthly VISUAL NAMEMTLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of Iawthat thb document and all attachments Here prepared under my deechon or Supervision ate the m accordance bmi a system designed my inquiry o assure that reon qualified personnel properly gather and _ _ ,/ / TELEPHONE DATE O aluate Me mformahon submdbtl Based on my of the person or persons who manage the system, or these arsons directly responsible for gathering the information the nformabon submdta0 s, r, to the beat of my knowledge and belief true accurate, and compbte I am awe Nat mere are _p sgmbcant penines for submdtlrp false nlannaban inchdug the poesibAdy of me and enprwonment for SIGNATURE OF P IPAL EXECUTIVE OFFICER OR -,S O Q c' jDTYPED OR PRINTED novnnpvalaho s AUTHORIZED AGENT �- C— NUMBER COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR < 10,24HR PRECIP EVENT;SETTLEABLE SOLIDS LIMIT 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 VIA.2.G OF RATIONALE. 30 DAY AVG IS HIGHEST MONTHLY AVG DURING REPORTING PERIOD. EPA Form 3320 -1 (Rev.01106) Previous editions may be used. 10/17/2013 Page 1