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PERMITTEE NAME/ADDRESS (Include Facility Name/Locahon d 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) 000000132 017 -A PERMIT DISCHARGE EIMER- MONITORING PERIOD MM/DD/YYYY MM /DD/YYYY 1/01/2014 01 /31 /2014 Form Approved OMB No. 2040 -0004 DMR Mailing ZIP CODE: 81424-0535 MINOR GUNIS SURF RUNOFF TO N. FK GUNIS RIV External Outfall No Discharge NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I cendy under a—d n ewthal system document designed t all adachm t qualified prepared under rop my tlather a d TELEPHONE DATE penalry �aupervrswn m acrmatio s with a system tles my i to assure that person o tl personnel property gather and (A!/ . I aluate the information submitted Based on my inquiry of the person or persons who manage tlu t '� u Q system or those persons directly responsible for gathering the intomratwn the hformatwn cutsnatetl e f to the best of my knowledge and belief true accurate and complete 1 am aware tivt there are %Q _ �O 6 iz ! Z41 ( y�� sgnihwnt penalties for submdbng fake information including the possibddy of the and imprisonment f r IGNATURE OF P NCIPAL EXECUTIVE OFFICER OR TYPED OR PRINTED nowmg violations AUTHORIZED AGENT -EAC— I NUMBER M COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIES FOR <= 10YR,24HR PRECIP EVENT,SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVERT -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 RPTD 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 '••••• g 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. Req. Mon. mUL Monthly GRAB 30DA AVG DAILY MX Iron, total [as Fe] SAMPLE • *•••• ••••» •• -••• + «... MEASUREMENT 0104510 Effluent Gross PERMIT REQUIREMENT '*•••` `*•••• •••»• •"'•' 3000 6000 ug /L Monthly GRAB 30DA AVG DAILY MX Oil and grease SAMPLE ' -'••• »• »+ -•• »+ . ««. + «.« MEASUREMENT 0358210 Effluent Gross PERMIT REQUIREMENT •-• »` • »• -• »•••• `•`••• ••»• 10 mg /L Contingent GRAB 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 84066 1 0 PERMIT •`• ~'• Req. Mon. Y=1;N =0 `• " ~' •••~•' •• «« ••• »- Monthly VISUAL Effluent Gross REQUIREMENT INST MAX NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I cendy under a—d n ewthal system document designed t all adachm t qualified prepared under rop my tlather a d TELEPHONE DATE penalry �aupervrswn m acrmatio s with a system tles my i to assure that person o tl personnel property gather and (A!/ . I aluate the information submitted Based on my inquiry of the person or persons who manage tlu t '� u Q system or those persons directly responsible for gathering the intomratwn the hformatwn cutsnatetl e f to the best of my knowledge and belief true accurate and complete 1 am aware tivt there are %Q _ �O 6 iz ! Z41 ( y�� sgnihwnt penalties for submdbng fake information including the possibddy of the and imprisonment f r IGNATURE OF P NCIPAL EXECUTIVE OFFICER OR TYPED OR PRINTED nowmg violations AUTHORIZED AGENT -EAC— I NUMBER M COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIES FOR <= 10YR,24HR PRECIP EVENT,SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR EVERT -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 RPTD EPA Form 3320 -1 (Rev.01106) Previous editions may be used. 10/17/2013 Page 1