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PARAMETER <br />I certify under penalty of law that dim document and all attachments were prepared under my duecton or <br />supervision to accordance with a system designed to assum that qualified personnel properh gather and <br />v Mete th • ose per sons submitted directly r Based le or inquiry of e person io persons who manage the <br />system or those persons directly reaponstblc for gathering the mfomhahon the information submitted lb, <br />to the best of my knowledge and belie[, we, accurate and complete I am aware that there arc significant <br />penalties tor nbmdengralaemrennantm ,mewamgoepoa<hbmn of line nnhwng <br />QUANTITY OR LOADING <br />QUALITY OR CONCENTRATION <br />NO. <br />EX <br />of A NALYSIS <br />SAMPLE <br />TYPE <br />VALUE <br />VALUE <br />UNITS <br />VALUE <br />VALUE <br />VALUE <br />UNITS <br />LC50 Statre 48HrAcute D. Magna <br />TAM3C 1 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />,,,,,, <br />* { #*** <br />i*;i* <br />7 l UO <br />f } #" <br />J /p( <br />- <br />��� <br />�*�' <br />PERMIT <br />REQUIREMENT <br />» "" <br />100 <br />MN VALUE <br />" "" <br />'• ~•' <br />% <br />Quarterly <br />GRAB <br />NAME/TITLE PRINCIPAL EXECUTIVE OFFICER <br />I certify under penalty of law that dim document and all attachments were prepared under my duecton or <br />supervision to accordance with a system designed to assum that qualified personnel properh gather and <br />v Mete th • ose per sons submitted directly r Based le or inquiry of e person io persons who manage the <br />system or those persons directly reaponstblc for gathering the mfomhahon the information submitted lb, <br />to the best of my knowledge and belie[, we, accurate and complete I am aware that there arc significant <br />penalties tor nbmdengralaemrennantm ,mewamgoepoa<hbmn of line nnhwng <br />/ <br />/ { /, "Y// '1 <br />! , � l � / <br />TELEPHONE <br />DATE <br />� <br />" 1/U 4 y <br />n <br />C , <br />! <br />/ 7U <br />�� <br />(� 1U ' <br />' <br />C' e 2 ? r'L <br />/ / <br />S I GNATURE OF PRINCIPAL EXECUTIVE OFFICER OR <br />AUTHORIZED AGENT <br />AREA Code I <br />NUMBER <br />MM /DD/YYYY <br />TYPED OR PRINTED <br />PERMITTEE NAME /ADDRESS (Include Facility Name/Location if Different) <br />NAME: <br />ADDRESS: <br />FACILITY: <br />LOCATION: <br />Twentymile Coal Company <br />29515 Routt CR 27 <br />Oak Creek, CO 80467 <br />MINES 1 &2 AND ECKMAN PARK MINE <br />29515 RCR #27 <br />OAK CREEK, CO 80467 <br />ATTN. JERRY NETTLETON, ENV SUPERVISR <br />EPA Form 3320 - 1 (Rev.01106) Previous editions may be used. <br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />FROM <br />000027154 <br />PERMIT NUMBER <br />007 -W <br />DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM /DD/YYYY <br />01/01/2011- <br />MM /DD/YYYY <br />03/31/2011— <br />TO <br />DMR Mailing ZIP CODE: 80467 <br />MAJOR <br />(SUBR JC) ROUTT <br />ACUTE WET TESTING FOR 007A <br />External Outfall <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />SEE PART I.A.4 FOR DETAILS OF TESTPROCEDURE. REPORT LOWEST DILUTION(% EFFLUENT) WHICH IS LETHAL TO 50%0F TEST ORGANISMS (LC50) AND ATTACH ACUTE TOXICITY TEST REPORT FORM TO DMR <br />03/31/2011 <br />Form Approved <br />OMB No 2040 -0004 <br />No Discharge <br />Page 1 <br />