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PERMITTEE NAME/ADDRESS (Include Facility Nama4.ocabon 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) C00000132 014-A PERMIT NUM I DISCHARGE MONITORING PERIOD MM/DD/WYY MWDD/YYYY 05/01/2014 05/31/2014 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 I X 1 NAMEITITLE PRINCIPAL EXECUTIVE OFFICER t candy under penalty of taw that this document and au attachments were prepared under my direction or supervision in accordance with a system designed to aspersonnel sure that qualified pe property gather and TELEPHONE DATE waste the information submitted Based on my inquiry of the person or persons who manage the OSystem, or those persons directly responsible for gathering the infonnabon, the mformaton submitted 6 •� NN �/ l t ! to the best of my knowledge and oeket true accurate and complete I am aware that there are I CA4 V% sgnit¢ ant penalties for submrtbng fake information indWing the possibility of fine and imprisonment for SIGNATURE OF PRI CIPAL EXECUTIVE OFFICER OR TYPED OR PRINTED novang wolamm AUTHORIZED AGENT AREA cod. 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 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 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 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 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 t candy under penalty of taw that this document and au attachments were prepared under my direction or supervision in accordance with a system designed to aspersonnel sure that qualified pe property gather and TELEPHONE DATE waste the information submitted Based on my inquiry of the person or persons who manage the OSystem, or those persons directly responsible for gathering the infonnabon, the mformaton submitted 6 •� NN �/ l t ! to the best of my knowledge and oeket true accurate and complete I am aware that there are I CA4 V% sgnit¢ ant penalties for submrtbng fake information indWing the possibility of fine and imprisonment for SIGNATURE OF PRI CIPAL EXECUTIVE OFFICER OR TYPED OR PRINTED novang wolamm AUTHORIZED AGENT AREA cod. 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 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