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PERMITTEE NAME/ADDRESS (Indude Faahly NampAocation if Different) NAIVE: 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 I' NUMBER MONITORING PERIOD MWDD/YYYY MWDD/YYYY 06/01/2014 06/30/2014 Form Approved OMB No 2040-0004 DMR Mailing ZIP CODE: 81424-0535 MINOR GUMS — SEDIMENT POND TO SANBORN CREEK External Outfall No Discharge NAMEITITLE PRINCIPAL EXECUTIVE OFFICER I cemry under penalty of law that tMs document and all attachments were prepared under my direction or TELEPHONE DATE supervision in accordance M+th a system designed to assure that qualified personnel property gather and ` ` • Q aluate the inform ition submitted Based on my inquiry of the person or persons who manage the tfF'!/r C. Ir(\ 7f _(J••_I system or those persons directly responsible for gathering the tmormatwn, the information submitted is 7 I r ,f % l to the best of my knoWedge and belxt true accurate and comldete I am aysre that there are Ny-r^/'y`.s� sgnmwm penalties for submrtbrg false information Including the possibility of fee and Imprsonment for IGNATURE OF PRINC AL EXECUTIVE OFFICER OR J aU6 a TYPED OR PRINTED n—ng vlolabom AUTHORIZED AGENT AREA CoW I NUMBER /YYYV COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR I PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVENT -SEE IA.1,PP 4-5, AND I.A.2, P. 5 FOR RQMNTS.TDS MONITORING -SEE PART VIA.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 pH SAMPLE " "••» " " »' ' »•» "`•'» 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 * »'•* '• * »• • ~ "' "'»` 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 500601 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 30DA AVG DAILY MX NAMEITITLE PRINCIPAL EXECUTIVE OFFICER I cemry under penalty of law that tMs document and all attachments were prepared under my direction or TELEPHONE DATE supervision in accordance M+th a system designed to assure that qualified personnel property gather and ` ` • Q aluate the inform ition submitted Based on my inquiry of the person or persons who manage the tfF'!/r C. Ir(\ 7f _(J••_I system or those persons directly responsible for gathering the tmormatwn, the information submitted is 7 I r ,f % l to the best of my knoWedge and belxt true accurate and comldete I am aysre that there are Ny-r^/'y`.s� sgnmwm penalties for submrtbrg false information Including the possibility of fee and Imprsonment for IGNATURE OF PRINC AL EXECUTIVE OFFICER OR J aU6 a TYPED OR PRINTED n—ng vlolabom AUTHORIZED AGENT AREA CoW I NUMBER /YYYV COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR I PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVENT -SEE IA.1,PP 4-5, AND I.A.2, P. 5 FOR RQMNTS.TDS MONITORING -SEE PART VIA.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