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PERMITTEE NAME/ADDRESS (Include Facility Name/Locahon if Different) <br />NAME: Oxbow Mining LLC <br />ADDRESS: PO Box 535 <br />Somerset, CO 81434 <br />FACILITY: ELK CREEK MINE <br />LOCATION: 3737 HV4Y 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 NUMBER DISCHARGE UMB <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />04/16/2013 06/30/2013 <br />Form Approved <br />OMB No. 2040-0004 <br />DMR Mailing ZIP CODE: 81434 <br />MINOR <br />Chronic WET Testing for 015B <br />External Outfall <br />No Discharge E3 <br />NAME/TITLE PRINCIPAL EXECUTIVE OFFICER <br />I ceridy under penalty of law that the document and all attachments were prepared under my direction or <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 />UMTS <br />%Effect Statre 7Day Chronic <br />Pimephales <br />SAMPLE <br />MEASUREMENT <br />•• *••• <br />tH««« <br />« «a « «« <br />/0 c <br />H « « «. <br />« «. « «« <br />% <br />Z7 <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 />""*` <br />" " *' <br />" "" <br />> /co <br />' " " "' <br />` " "`• <br />j <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 />} 160 <br />" "'* <br />"`•" <br />b/ <br />d <br />96 <br />G 1< rrro <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 />I ceridy under penalty of law that the document and all attachments were prepared under my direction or <br />' <br />TELEPHONE <br />DATE <br />aupewsm m accordance with a system designed to assure that quaNhed personnel propery gather and <br />ablate the intormabon submd1d Based on my mquiry of the person or persons wbo manage the <br />system, or those persons dl—ly responsible for gatharmg the mformabon the mformat n submdbd <br />the best of my knowledge and behef true accurate, and complete I am aware that there are <br />•- <br />r`� <br />7a - - Sf 6 <br />G7/ <br />' SIGNATURE OF PRINCIPAL EXECUTIVE OFFICER OR <br />AUTHORIZED AGENT <br />IVto <br />�% " w1 I V r J :, <br />agmfcant penames for submiqug false mformatmn, mduwng the possb6ty of fine and nprsonmem for <br />nowrg violabors <br />7y�` <br />/ t <br />TYPED OR PRINTED <br />AREA code <br />NUAAeER <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 "T" to report highest % reported between IC25 and statistically signif dill for <br />ceriodaphnia and pimephales. <br />EPA Form 3320 -1 (Rev.01 106) Previous editions may be used. <br />05/30/2013 <br />Page 2 <br />