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PERMITTEE NAME /ADDRESS (Include Facility Name/Location 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 014 -A PERMIT NUMBER DISCHARGE NUMBER MONITORING PERIOD MM /DD /YYYY MM /DD/YYYY 08/01/2014 08/31/2014 Form Approved OMB No 2040 -0004 DMR Mailing ZIP CODE: 81424 -0535 MINOR GUNIS SURF RUNOFF TO N FK GUNNISON R External Outfall No Discharge 9(1 NAME /TITLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that this document and all attachments were prepared under my director, or TELEPHONE DATE supervision in accordance with a system designed to assure that qualified personnel properly gather and 1 / ` valuate the information submitted. Based on my inquiry of the person or persons who manage the Yo. r system, or those persons directly responsible for gathering the information submitted is , the information submitted , !!!///�� rrr �" to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are krilli CIA "t penalties for submitting false information, including the possibility of fine and imprisonment for IGNATUREOFPRINCIPALEXECUTIVEOFFICEROR /s ! y ✓O eJ 0S �� knowing violations AGENT TYPED OR PRINTED ABFA Code NUMBER MMIDDIYYYY 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.01 /06) 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 Oiland grease visual SAMPLE * * * * ** *' * "' * * * * ** * * * * ** * * * * ** MEASUREMENT 840661 0 PERMIT ` *` * ** Req. Mon. Y =1;N =0 * "` *` ` * *' *' " "`* ` * " *` Monthly VISUAL Effluent Gross REQUIREMENT INST MAX NAME /TITLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that this document and all attachments were prepared under my director, or TELEPHONE DATE supervision in accordance with a system designed to assure that qualified personnel properly gather and 1 / ` valuate the information submitted. Based on my inquiry of the person or persons who manage the Yo. r system, or those persons directly responsible for gathering the information submitted is , the information submitted , !!!///�� rrr �" to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are krilli CIA "t penalties for submitting false information, including the possibility of fine and imprisonment for IGNATUREOFPRINCIPALEXECUTIVEOFFICEROR /s ! y ✓O eJ 0S �� knowing violations AGENT TYPED OR PRINTED ABFA Code NUMBER MMIDDIYYYY 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.01 /06) Previous editions may be used. 10/17/2013 Page 1