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PERMITTEE NAME/ADDRESS (Include Facility Narnwtocation 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) C00000132 017 -A PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD MM/DD/YYYY MM/DD/YYYY 06/01/2014 06/30/2014 Form Approved OMB No. 2040 -0004 DMR Mailing ZJP CODE: 81424-0535 MINOR GUNIS SURF RUNOFF TO N. FK GUNIS RIV External Outfall No Discharge NAMEITITLE PRINCIPAL EXECUTIVE OFFICER 1 certify under penalty of law that thus document and atl attachments were prepared under my direction or ^ TELEPHONE DATE supervision in acrofdanx with a system designed to assure that Qualified personnel property gamer and 0 valuate the information submitted Based on my inquiry of the person or persons who manage the YVI r t system or those persons directly responsible for gathering the information, the information subm lted s to the best of my knowledge and behet true, accurate, and complete I am aware that there are e5 f significant penalties for submitting fake information including the possibility of fine and imm"ru end for SIGNATURE OF AINCIPAL EXECUTIVE OFFICER OR TYPED OR PRINTED knowing viclabons AUTHORIZED AGENT �� t:— NUMBER MMID COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIES FOR <= 10YR,24HR PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVERT -SEE IA.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 RPTO EPA Forth 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 pH SAMPLE ... "" •"'•• "*•'• ••'•" MEASUREMENT 004001 0 PERMIT '•• — "'••• "'*'• 6.5 "" ' 9 SU Monthly INSITU Effluent Gross REQUIREMENT MINIMUM MAXIMUM Solids, total suspended SAMPLE •'•• *• *••••' " " * ** `••••• MEASUREMENT 005301 0 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. mL/L 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 Solids, total dissolved SAMPLE "•'••• • -• ~• •"• *•, •••••• MEASUREMENT 702951 0 PERMIT "••'• " "'••• "*`•'* "" "' Req. Mon. Req. Mon. mg /L Quarterly GRAB Effluent Gross REQUIREMENT QRTR AVG DAILY MX NAMEITITLE PRINCIPAL EXECUTIVE OFFICER 1 certify under penalty of law that thus document and atl attachments were prepared under my direction or ^ TELEPHONE DATE supervision in acrofdanx with a system designed to assure that Qualified personnel property gamer and 0 valuate the information submitted Based on my inquiry of the person or persons who manage the YVI r t system or those persons directly responsible for gathering the information, the information subm lted s to the best of my knowledge and behet true, accurate, and complete I am aware that there are e5 f significant penalties for submitting fake information including the possibility of fine and imm"ru end for SIGNATURE OF AINCIPAL EXECUTIVE OFFICER OR TYPED OR PRINTED knowing viclabons AUTHORIZED AGENT �� t:— NUMBER MMID COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIES FOR <= 10YR,24HR PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVERT -SEE IA.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 RPTO EPA Forth 3320 -1 (Rev.01106) Previous editions may be used. 10/17/2013 Page 1