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PERMITTEE NAME/ADDRESS (Include Facility Name /LocattontfDlfferent) 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 007 -A PERMIT NU DISCHARGE N ER MONITORING PERIOD MM /DD/YYYY MM /DD/YYYY 10/01/2014 10/31/2014 Form Approved • OMB No. 2040 -0004 DMR Mailing ZIP CODE: 81424 -0535 MINOR GUNIS SEDIMENT POND TO HUBBARD CREEK External Outfall No Discharge 1P NAMEITITLE PRINCIPAL EXECUTIVE OFFICER I certty under penalty of law that this document and all attachments were prepared under my direction or TELEPHONE DATE supe ate th m f accordance rmatio s with a system designed on my i to assure that qualified personnel properly gather and aluate the mkrmatron submitted Based on my inquiry of the person or persons who manage the 1r-is ii4d1h 40 system, or those persons directly responsible for gathering the information, the information submitted ei, q A (7 to the hest of my knowledge and belief, true, accurate, and complete I am aware that there are f+y S�V 6 /I Q 3 z V,e srgnficantpenathes for submdbngfalse information including the possdalityoffine and impnsonmentfor SIGNATURE OF NCIPAL EXECUTIVE OFFICER OR TYPED OR PRINTED "e`w"g violations AUTHORIZED AGENT ARFJA Code I NUMBER WMIDDfYYYY 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.01 106) 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 0053010 PERMIT * * * * ** " * *" * * * * ** **"'* 35 70 mg /L Monthly GRAB Effluent Gross REQUIREMENT 30DA AVG DAILY MX Solids, settleable SAMPLE " * " * ** * * * * "• * * * * ** • *• * ** MEASUREMENT 005451 0 Effluent Gross PERMIT REQUIREMENT ** * * ** *~~ * ** *** * ** '***** Req. Mon. 30DA AVG Req. Mon. DAILY MX mUL Monthly GRAB 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 5005010 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 certty under penalty of law that this document and all attachments were prepared under my direction or TELEPHONE DATE supe ate th m f accordance rmatio s with a system designed on my i to assure that qualified personnel properly gather and aluate the mkrmatron submitted Based on my inquiry of the person or persons who manage the 1r-is ii4d1h 40 system, or those persons directly responsible for gathering the information, the information submitted ei, q A (7 to the hest of my knowledge and belief, true, accurate, and complete I am aware that there are f+y S�V 6 /I Q 3 z V,e srgnficantpenathes for submdbngfalse information including the possdalityoffine and impnsonmentfor SIGNATURE OF NCIPAL EXECUTIVE OFFICER OR TYPED OR PRINTED "e`w"g violations AUTHORIZED AGENT ARFJA Code I NUMBER WMIDDfYYYY 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.01 106) Previous editions may be used. 10/17/2013 Page 1