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PERM ITTEE NAM E /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 010 -A PERMIT NUMBER I DISCHARGE NUMBER MONITORING PERIOD MM /DD/YYYY MM /DD/YYYY 11/01/2014 1 11/30/2014 Form Approved OMB No. 2040 -0004 DMR Mai ing ZIP CODE: 81424 -0535 MINOR GUNIS SEDIIAE T POND TO SANBORN CREEK External Outfall No Discharge j NAMEITITLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that thm document and all attachments were prepared under my direction or supervision in accordance wth a system designed to assure that qualRed personnel properly gather and valuate the information submitted. Based on my inquiry of the person or persons wno manage the system, or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief. true, accurate, and complete. 1 am aware that there are sgnificantpenatties for submitting false information. including the possibility of fine and impnsonmentfor vowing violations. QUANTITY OR LOADING QUALITY OR CONCENTRATION TELEPHONE DATE NO. FREQUENCY SAMPLE PARAMETER AREA Code EX OF ANALYSIS TYPE VALUE VALUE UNITS VALUE VALUE VALUE UNI S 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 m /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 010451 0 PERMIT " ~ ~ "`~ * * " *« ` * * "~ * * " * *» 3500 7000 ug L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Oil and grease SAMPLE MEASUREMENT 035821 0 PERMIT * * » » ** ` * * * ** * " * * ** *' * *'* * » *' «* 10 m /L Contingent GRAB Effluent Gross REQUIREMENT INST MAX Flow, in conduit or thru treatment plat SAMPLE MEASUREMENT 50050 1 0 PERMIT Req. Mon. Req. Mon. MGD " * " «* ' * *' "« *' * * "* « Monthly INSTAN Effluent Gross REQUIREMENT 30DA AVG DAILY MX Oil and grease visual SAMPLE MEASUREMENT 840661 0 PERMIT * « * * "* Req. Mon. Y =1;N =0 " * "* * ** ** * " "` * Monthly VISUAL Effluent Gross REQUIREMENT INST MAX NAMEITITLE PRINCIPAL EXECUTIVE OFFICER I certify under penalty of law that thm document and all attachments were prepared under my direction or supervision in accordance wth a system designed to assure that qualRed personnel properly gather and valuate the information submitted. Based on my inquiry of the person or persons wno manage the system, or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief. true, accurate, and complete. 1 am aware that there are sgnificantpenatties for submitting false information. including the possibility of fine and impnsonmentfor vowing violations. ^ C t —' ` _ •. yf r �'�/ TELEPHONE DATE Q U SIGNATUREOF PRINCIPAL EXECUTIVE OFFICER OR AUTHORIZED AGENT AREA Code NUMBER MMIDDIYYYY TYPED OR PRINTED 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 B WAIVED FOR >10YR,24HR EVENT -SEE I.A.1,PP 4 -5, AND I.A.2, P. 5 FOR ROMNTS.TDS MONITORING -SEE PART VI.A.2.G OF RATIONALE. 30 DAY AVG. IS HIGHEST MONTHLY AVG. DUR NG PERIOD REPRTD. EPA Form 3320 -1 (Rev.01 /06) Previous editions may be used. 1 10/17/2013 Page 1