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a PERMITTEE NAME/ADDRESS (Indude Facility Narnelocadon 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 019-A PERMIT NUMBER DISCHARGE MBER MONITORING PERIOD MWDD/YYYY MM/DD/YYYY 05/01/2014 05/31/2014 Form Approved OMB No. 2040-0004 DMR Mailing ZIP CODE: 81424-0535 MINOR GUNIS SURFACE RUNOFF TO HUBBARD CRK External Outfall No Discharge NAME/TITLE PRINCIPAL EXECUTIVE OFFICER 1 ce 11ty under penalty of law that this document and all attachments Here prepared under my direction or supervision in accordance vath a system desgned to assure that qualdied personnel properly gamer and TELEPHONE DATE valuate the information submitted Based on my inquiry of the person or persons wtw manage the system or those persons directly responsibk for gathering the information the information submitted a YV! f to the best of my knowledge and belief true accurate and complete I am aware that mere are Q sgndiwnt penaMes for submitting fake information including the po"ItHidy of fine and Impnsonment for SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR y� y� /� 5-9d 6 TYPED OR PRINTED nrnwng violations AUTHORIZED AGENT AREA Code I NUMBER MMIDD/YYYY COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR < 10,24HR 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 REPORTING PERIOD. EPA Form 3320 -1 (Rev.01 /06) 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 00400 1 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 MX 7D AV 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 NAME/TITLE PRINCIPAL EXECUTIVE OFFICER 1 ce 11ty under penalty of law that this document and all attachments Here prepared under my direction or supervision in accordance vath a system desgned to assure that qualdied personnel properly gamer and TELEPHONE DATE valuate the information submitted Based on my inquiry of the person or persons wtw manage the system or those persons directly responsibk for gathering the information the information submitted a YV! f to the best of my knowledge and belief true accurate and complete I am aware that mere are Q sgndiwnt penaMes for submitting fake information including the po"ItHidy of fine and Impnsonment for SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR y� y� /� 5-9d 6 TYPED OR PRINTED nrnwng violations AUTHORIZED AGENT AREA Code I NUMBER MMIDD/YYYY COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR < 10,24HR 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 REPORTING PERIOD. EPA Form 3320 -1 (Rev.01 /06) Previous editions may be used. 10/17/2013 Page 1