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PERMITTEE NAME/ADDRESS (Include Facility Name/Location if Different) <br />NAME: Oxbow Mining LLC <br />ADDRESS: PO Box 535 <br />Somerset, CO 81434 -0535 <br />FACILITY: SANBORN CRK & ELK CRK MINES <br />LOCATION: 3737 HIGHWAY 133 <br />SOMERSET, CO 81434 <br />ATTN: Mike Ludlow Exec VP <br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />C00000132 009 -A <br />PERMIT NU I DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM/DD/YYYY k_-1-2/'28/2015 M/D/YYYY <br />02/01/2015 <br />Form Approved <br />OMB No. 2040 -0004 <br />DMR Mailing ZIP CODE: 81424 -0535 <br />MINOR <br />GUNIS <br />SURF RUNOFF TO N FK GUNIS RIVR <br />External Outfall <br />No Discharge <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR — IOYR,24HR PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR <br />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. IF HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. <br />EPA Form 3320 -1 (Rev.01106) Previous editions may be used. 10/17/2013 Page 1 <br />QUANTITY OR LOADING <br />QUALITY OR CONCENTRATION <br />NO. <br />FREQUENCY <br />SAMPLE <br />PARAMETER <br />EX <br />OF ANALYSIS <br />TYPE <br />VALUE <br />VALUE <br />UNITS <br />VALUE <br />VALUE <br />VALUE <br />UNITS <br />pH <br />SAMPLE <br />*" ***` <br />* * " * *" <br />* **«•` <br />* " *" ` <br />MEASUREMENT <br />0040010 <br />PERMIT <br />""` *" <br />' *`*"" <br />*`*•"* <br />6.5 <br />"`*"" <br />9 <br />SU <br />Monthly <br />INSITU <br />Effluent Gross <br />REQUIREMENT <br />MINIMUM <br />MAXIMUM <br />Solids, total suspended <br />SAMPLE <br />" ***"" <br />"**" " <br />*'• '" <br />"" ""* <br />MEASUREMENT <br />0053010 <br />PERMIT <br />35 <br />70 <br />mg /L <br />Monthly <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Solids, settleable <br />SAMPLE <br />** **** <br />* "** ** <br />•`*` *` <br />* ****' <br />MEASUREMENT <br />005451 0 <br />PERMIT <br />*"*""" <br />`***"* <br />**'"*" <br />***"** <br />Req. Mon. <br />Req. Mon. <br />mUL <br />Monthly, <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Iron, total [as Fe] <br />SAMPLE <br />*'*""' <br />• *• "* <br />" *`*" <br />""* '" <br />MEASUREMENT <br />0104510 <br />PERMIT <br />" *"«"" <br />"*`«*` <br />**"* "* <br />• *""* <br />3500 <br />7000 <br />ug /L <br />Monthly <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Oil and grease <br />SAMPLE <br />"* " "" <br />"•"**" <br />"` *"` <br />` «""` <br />"` "* <br />MEASUREMENT <br />035821 0 <br />PERMIT <br />'""«" <br />**«« ` <br />" "« `« <br />`*"` *" <br />* *"* <br />10 <br />mg/L <br />Contingent <br />GRAB <br />Effluent Gross <br />REQUIREMENT <br />INST MAX <br />Flow, In conduit or thru treatment plat <br />SAMPLE <br />MEASUREMENT <br />5005010 <br />PERMIT <br />Req. Mon. <br />Req. Mon. <br />MGD <br />*'***" <br />"* "' <br />**' <br />""" "" <br />Monthly <br />INSTAN <br />Effluent Gross <br />REQUIREMENT <br />30DA AVG <br />DAILY MX <br />Oil and grease visual <br />SAMPLE <br />" «**`" <br />"*' "*" <br />`«`"•` <br />"" " "` <br />" " "`"" <br />MEASUREMENT <br />8406610 <br />PERMIT <br />•*`"*' <br />Req. Mon. <br />Y =1;N =0 <br />"*""" <br />"`" "*" <br />"«""° <br />*"`""` <br />Monthly <br />VISUAL <br />Effluent Gross <br />REQUIREMENT <br />INST MAX <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />TSS & TOTAL IRON LIMITS WILL BE WAIVED, AND SETTLEABLE SOLIDS LMT APPLIED FOR — IOYR,24HR PRECIP EVENT;SETTLEABLE SOLIDS LIMIT MAY BE WAIVED FOR >10YR,24HR <br />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. IF HIGHEST MONTHLY AVG. DURING PERIOD REPRTD. <br />EPA Form 3320 -1 (Rev.01106) Previous editions may be used. 10/17/2013 Page 1 <br />