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PERMITTEE NAME/ADDRESS (Indude Facility NarneAocat on if afferent) 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 016 -A PERMIT M R DISCHARGE NUMBER MONITORING PERIOD MWDD/YYYY MM/DD/YYYY 06/01 /2014 06/30/2014 Form Approved OMB No 2040-0004 DMR Mailing ZIP CODE: 81424-0535 MINOR GUNIS SURFACE RUNOFF TO ELK CREEK External Outfall No Discharge 1P NAMEITITLE PRINCIPAL EXECUTIVE OFFICER l cemfy under penalty of law that this document and all attachments were prepared under my direction or / TELEPHONE DATE supervision in accordance win a system designed to assure that qualified personnel properly gamer and /l �/ }}qt� aluate the information submitted Based on my inquiry of the person or persons who manage dne (/� (/[� / /y f '. �'� system or those persorm tleectly respprtside for gathenng Ire mformason, the mfornllZ submstetl is to me best of my snovAedge sera belief true accurate and complete I am aware that them are significant penatt� for subrii fake information includig the possibdM1y of tune and ,mprisonmenl for SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR TYPED OR PRINTED nowng wwata K AUTHORIZED AGENT s NUMBER MMIDDIYYYY aReA co COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR < =10YR,24 HR PRECIP EVENT,SETTLEABLE SOLIDS LIMITS MAY BE WAIVED FOR >10YR,24HR EVENT -SEE IA.1, PP 4 -5, AND IA.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.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 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 Solids, total dissolved SAMPLE " "~~ : ~ * *'* • "'« " ~ ~'• MEASUREMENT 70295 1 0 PERMIT ~•` *'~ "' * ~' " "•' "' «' Req. Mon. Req. Mon. mg /L Quarterly GRAB Effluent Gross REQUIREMENT QRTR AVG DAILY MX NAMEITITLE PRINCIPAL EXECUTIVE OFFICER l cemfy under penalty of law that this document and all attachments were prepared under my direction or / TELEPHONE DATE supervision in accordance win a system designed to assure that qualified personnel properly gamer and /l �/ }}qt� aluate the information submitted Based on my inquiry of the person or persons who manage dne (/� (/[� / /y f '. �'� system or those persorm tleectly respprtside for gathenng Ire mformason, the mfornllZ submstetl is to me best of my snovAedge sera belief true accurate and complete I am aware that them are significant penatt� for subrii fake information includig the possibdM1y of tune and ,mprisonmenl for SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR TYPED OR PRINTED nowng wwata K AUTHORIZED AGENT s NUMBER MMIDDIYYYY aReA co COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR < =10YR,24 HR PRECIP EVENT,SETTLEABLE SOLIDS LIMITS MAY BE WAIVED FOR >10YR,24HR EVENT -SEE IA.1, PP 4 -5, AND IA.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.01106) Previous editions may be used. 10/17/2013 Page 1