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PERMITTEE NAME/ADDRESS (Include Facility NamelLocation d 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 010 -A PERMIT NUMBER I DISCHARGE NUMBER MONITORING PERIOD MM/DD/YYYY MM/DD/YYYY 12/01/2013 12/31/2013 Form Approved OMB No. 2040 -0004 DMR Mailing ZIP CODE: 81424-0535 MINOR GUNIS SEDIMENT POND TO SANBORN CREEK External Outtall No Discharge NAME/TITLE PRINCIPAL EXECUTIVE OFFICER l Dandy omen penalty of law that this document and all attachments were prepared under my mrecbon or TELEPHONE DATE sdpemc,cn in accordance wM a system designed to assure that qualified personnel property gather and aluate the information submitted. Based on my inquiry of the person or persons who manage me Will, z Q system . or those persons directly responsible for gathering the information, the into—fi.r submitted to the best of my knowledge and belief. true. accurate, and complete. I am aware that mere are (1iG Q / O Z r (S( h sgnmcant penalties for submitting fake information including the possibil y of One and impr conment to SIGNATURE OF PRtN IPAL EXECUTIVE OFFICER OR Id' i J a VVV knowing wiomuons. AU ORIZED AGENT NUMBER M D TYPED OR PRINTED AREA Coo 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 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 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 pHSAMPLE ...... ...... ,,.,.. ....,. 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 PERMIT ••'••• • " "• •`• "' " "•• Req. Mon. Req. Mon. mUL Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Iron, total [as Fe) SAMPLE ••••.. • ^ "`•• '•'••• "_'_• MEASUREMENT 010451 0 PERMIT •'•••' " "•' " "" " ".. 3500 7000 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 Effluent Gross PERMIT REQUIREMENT Req. Mon. 30DA AVG Req. Mon. DAILY MX MGD " "" "'•" ••"" "`• *• Monthly INSTAN Solids, total dissolved SAMPLE •• ~••* "•_•` •• ' • *• MEASUREMENT 70295 1 0 Effluent Gross PERMIT REQUIREMENT ~ ~`~ * *' ~• "'•" ' ~ "'• Req. Mon. 30DA AVG Req. Mon. DAILY MX mg /L Quarterly GRAB NAME/TITLE PRINCIPAL EXECUTIVE OFFICER l Dandy omen penalty of law that this document and all attachments were prepared under my mrecbon or TELEPHONE DATE sdpemc,cn in accordance wM a system designed to assure that qualified personnel property gather and aluate the information submitted. Based on my inquiry of the person or persons who manage me Will, z Q system . or those persons directly responsible for gathering the information, the into—fi.r submitted to the best of my knowledge and belief. true. accurate, and complete. I am aware that mere are (1iG Q / O Z r (S( h sgnmcant penalties for submitting fake information including the possibil y of One and impr conment to SIGNATURE OF PRtN IPAL EXECUTIVE OFFICER OR Id' i J a VVV knowing wiomuons. AU ORIZED AGENT NUMBER M D TYPED OR PRINTED AREA Coo 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 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 REPRTD. EPA Form 3320 -1 (Rev.01106) Previous editions may be used. 10/17/2013 Page 1