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PERMITTEE NAME/ADDRESS (Include Facility Namekocation if Different) <br />NAME: Oxbow Mining LLC <br />ADDRESS: PO Box 535 <br />Somerset, CO 81434 <br />FACILITY: ELK CREEK MINE <br />LOCATION: 3737 HWY 133 <br />SOMERSET, CO 81434 <br />ATTN. Mike Ludlow. Exec VP <br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />COG850064 015 -X <br />PERMIT DISCHARGE <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />07/01/2013 1 09/30/2013 <br />Form Approved <br />OMB No. 2040 -0004 <br />DMR Mailing ZIP CODE: 81434 <br />MINOR <br />Chronic WET Testing for 01513 <br />External Outfall <br />No Discharge a <br />NAME/TITLE PRINCIPAL EXECUTIVE OFFICER <br />""'y under penalty of law that this document and all attachments. were prepared under my direction or <br />superv,son in accordance with a system designed to assure that qualified personnel properly gather and <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 />%Effect Statre 7Day Chronic <br />Pimephales <br />SAMPLE <br />MEASUREMENT <br />'•'••• <br />•• "•" <br />••'••• <br />> /Do <br />""" <br />' *•`•• <br />IC25 and statistically <br />signif dill for <br />ceriodaphnia and pimephales. <br />TCP6C P 0 <br />PERMIT <br />• "` *' <br />" "" <br />'• "" <br />Req. Mon. <br />" "" <br />" "" <br />% <br />Quarterly <br />GRAB -3 <br />See Comments <br />REQUIREMENT <br />SINGSAMP <br />%Effect Statre 7Day Chronic <br />Pimephales <br />SAMPLE <br />MEASUREMENT <br />> 100 <br />""'• <br />" * :*` <br />O <br />/p <br />Q <br />G R *0 <br />TCP6C S 0 <br />PERMIT <br />*"*** <br />' ~ ~` <br />""'* <br />Req. Mon. <br />""" <br />" "" <br />% <br />Quarterly <br />GRAB -3 <br />See Comments <br />REQUIREMENT <br />MN VALUE <br />%Effect Statre 7Day Chronic <br />Pimephales <br />SAMPLE <br />MEASUREMENT <br />"`•" <br />" " "' <br />"`*" <br />f 60 <br />` *"" <br />`•"" <br />/p <br />0 <br />!1 <br />�i Ivor/ <br />TCP6C T 0 <br />PERMIT <br />'* " *` <br />"* *" <br />' * "" <br />100 <br />" "" <br />" "' <br />% <br />Quarterly <br />GRAB -3 <br />See Comments <br />REQUIREMENT <br />MN VALUE <br />NAME/TITLE PRINCIPAL EXECUTIVE OFFICER <br />""'y under penalty of law that this document and all attachments. were prepared under my direction or <br />superv,son in accordance with a system designed to assure that qualified personnel properly gather and <br />i <br />TELEPHONE <br />DATE <br />valuate the "Inn abon -Imed Based on my inquiry of the person or persons who manage the <br />system or those persons directly responsible for gathering the information, the intormabon submitted s <br />�l Ni r <br />to the best of my knowledge and belief true accurate and complete I am aware that there are <br />shiftant penalties for submitting tae information including the possibility of fine and impn6anment for <br />g k <br />no-ng wmahons <br />a <br />ELVDIVYYYY <br />IGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR <br />AUTHORIZED AGENT <br />TYPED OR P TED <br />ARAR- Code <br />NUMBER <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />Rpt lowest % at which statistically signif dill between test & control using test code "S ". Rpt IC25 using test code "P ". Use test code 7' to report highest % reported between <br />IC25 and statistically <br />signif dill for <br />ceriodaphnia and pimephales. <br />EPA Form 3320 -1 (Rev.01106) Previous editions may be used. <br />08/26/2013 <br />Page 2 <br />