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PERMITTEE NAMEIADDRESS (include Facility Name/Locabon d fA6erent) 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) C000001 013 -A PERMIT N 32 DISCHARGE U MONITORING PERIOD MM/DD/YYYY MM/DDNYYY 05/01/2014 05/31/2014 Form Approved OM8 No 2040 -0004 DMR Mailing ZIP CODE: 81424-0535 MINOR GUNIS RUNOFF TO N FORK GUNNISON R. External Outtall No Discharge I certi under a of law that this dmument and all attachments were red under m a,reWon w NAMERITLE PRINCIPAL EXECUTIVE OFFICER h accordance preps y TELEPHONE DATE supe ate the m accordance with a system d on my i to assure that son o tl personnel property a the and �. 1 { /' j valuate the ose information submitted r Basetl le my inquiry g the person io persons wno manage the r IT(7�1/_l r (� `�{ tti r3 system or (nose persons directly responsible /or gathering me informatwn, the mformatgn submaetl � •ry► ( r ��' to the best of my knoMedge am beW true acwrate and complete I am —re that 9wre are _ ,4 sgmhcant pehalbes for submitting fake mfomnation mdwing Me possibility of fine and impra:onment for 1,//SIGNATURE OF PRI IPAL EXECUTIVE OFFICER OR � -�d 6 U b ,0 y 1V 4 novnrg vioiatiorc AUTHORIZED AGENT titian coae NUMBER NYYY 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 BE WAIVED FOR >10YR,24HR EVENT -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 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 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. 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 011 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 Oil and grease visual SAMPLE ` «'« •`••» ' »`« • * »« • » *» MEASUREMENT 840661 0 PERMIT »`•« Req. Mon. Y =1;N =0 ` » "` ` »'» "•••` `•' »' Monthly VISUAL Effluent Gross REQUIREMENT INST MAX I certi under a of law that this dmument and all attachments were red under m a,reWon w NAMERITLE PRINCIPAL EXECUTIVE OFFICER h accordance preps y TELEPHONE DATE supe ate the m accordance with a system d on my i to assure that son o tl personnel property a the and �. 1 { /' j valuate the ose information submitted r Basetl le my inquiry g the person io persons wno manage the r IT(7�1/_l r (� `�{ tti r3 system or (nose persons directly responsible /or gathering me informatwn, the mformatgn submaetl � •ry► ( r ��' to the best of my knoMedge am beW true acwrate and complete I am —re that 9wre are _ ,4 sgmhcant pehalbes for submitting fake mfomnation mdwing Me possibility of fine and impra:onment for 1,//SIGNATURE OF PRI IPAL EXECUTIVE OFFICER OR � -�d 6 U b ,0 y 1V 4 novnrg vioiatiorc AUTHORIZED AGENT titian coae NUMBER NYYY 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 BE WAIVED FOR >10YR,24HR EVENT -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 REPRTD. EPA Form 3320 -1 (Rev.01106) Previous editions may be used. 10/17/2013 Page 1