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PARAMETER <br />I Lend under penalty of law that this document and all attachments were prepared under my duectwn or <br />superv,v,unmaccordance th a system designed to assure that qualified personnel properh gather and <br />evaluate the Information submitted Based on my mqurry of the person or persons who manage the <br />em, or persons directly c for gadxn the mt, Information milled is <br />to t of knowledge and <br />to the best of my Awledge anJ belie[, let, true, tnie, n accurate and d complete plpiete ete I a am awawa re that there arc re sigiuticant <br />penalties for submitting false information, moludmg the possibd,h of fine and ImprisoImprisonment for fnotnng <br />QUANTITY OR LOADING <br />QUALITY OR CONCENTRATION <br />NO. <br />EX <br />FREQUENCY <br />OF ANALYSIS <br />SAMPLE <br />TYPE <br />VALUE <br />VALUE <br />UNITS <br />VALUE <br />VALUE <br />VALUE <br />UNITS <br />A rsenic, total (as As) <br />01002 1 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />...... <br />...... <br />...... <br />...... <br />j i c1 b <br />PERMIT <br />REQUIREMENT <br />" «' «« <br />Req. Mon. <br />3ODA AVG <br />Req. Mon. <br />DAILY MX <br />ug/L <br />Monthly <br />GRAB <br />Zinc, potentially dissolved <br />01303 1 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />,.,... <br />(U <br />`( <br />VI ( <br />5(A. <br />...... <br />PERMIT <br />REQUIREMENT <br />Req Mon. <br />3ODA AVG <br />Req. Mon. <br />DAILY MX <br />ug /L <br />Monthly <br />GRAB <br />Chromium, trivalent, potentially <br />di ssolvd <br />01314 1 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />...... <br />...... <br />„ « « «_ <br />. « «. «« <br />5 (`i <br />PERMIT <br />REQUIREMENT <br />Req. Mon. <br />3ODA AVG <br />Req. Mon. <br />DAILY MX <br />ug/L <br />Monthly <br />GRAB <br />Lead, potentially dissolvd <br />01318 1 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />...... <br />-� <br />S ( :l h <br />..,.,. <br />...... <br />PERMIT <br />REQUIREMENT <br />Req. Mon <br />3ODA AVG <br />Req Mon <br />DAILY MX <br />ug/L <br />Monthly <br />GRAB <br />Nickel, potentially dissolvd <br />01322 1 0 <br />Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />...... <br />-- <br />5. •f <br />f � <br />,.. « «, <br />...... <br />PERMIT <br />REQUIREMENT <br />Req. Mon <br />30DA AVG <br />Req Mon. <br />DAILY MX <br />ug/L <br />Monthly <br />GRAB <br />Selenium, potentially dissolvd <br />01323 1 0 Effluent Gross <br />SAMPLE <br />MEASUREMENT <br />.., <br />...... <br />... <br />C, ( <br />Q `f" <br />T( <br />Cj ( c, 6 <br />PERMIT <br />REQUIREMENT <br />...... <br />3ODA AVG <br />DAILY Mon. <br />MX <br />ug /L <br />Monthly <br />GRAB <br />NAME /TITLE PRINCIPAL EXECUTIVE OFFICER <br />I Lend under penalty of law that this document and all attachments were prepared under my duectwn or <br />superv,v,unmaccordance th a system designed to assure that qualified personnel properh gather and <br />evaluate the Information submitted Based on my mqurry of the person or persons who manage the <br />em, or persons directly c for gadxn the mt, Information milled is <br />to t of knowledge and <br />to the best of my Awledge anJ belie[, let, true, tnie, n accurate and d complete plpiete ete I a am awawa re that there arc re sigiuticant <br />penalties for submitting false information, moludmg the possibd,h of fine and ImprisoImprisonment for fnotnng <br />�/ /'� <br />( l (.(` <br />V <br />TELEPHONE <br />DATE <br />,/ <br />��/ ((I f <br />/ <br />�� ` (f /) <br />/ V 2 7 <br />�� (�S ,f x'1. �� <br />` ��� �/� <br />S IG NATURE OF PRINCIPAL EXECUTIVE OFFICER OR <br />AUTHORIZED AGENT <br />A REA Code I N UMBER <br />MM/DD/YYYY <br />r <br />I <br />J <br />TYPED OR PRINTED <br />PERMITTEE NAME /ADDRESS (Include Facility Name/Location if Different) <br />NAME: Twentymile Coal Company <br />ADDRESS: 29515 Routt CR 27 <br />Oak Creek, CO 80467 <br />FACILITY: <br />LOCATION: <br />MINES 1&2 AND ECKMAN PARK MINE <br />29515 RCR #27 <br />OAK CREEK, CO 80467 <br />ATTN JERRY NETTLETON, ENV SUPERVISR <br />FROM <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />EPA Form 3320 -1 (Rev.01 /06) Previous editions may be used. <br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />C00027154 <br />PERMIT NUMBER <br />MON -7 <br />DISCHARGE NUMBER <br />MONITORING PERIOD <br />MM /DD/YYYY <br />03/01 /2011; <br />MM /DD/YYYY <br />03/31/2012- <br />TO <br />I tst <br />Form Approved <br />ka b OMB No 2040 -0004 <br />* � I C <br />U y e l DMR Mailing ZIP CODE: 80467 <br />(z <br />MAJOR <br />(SUBR JC) ROUTT <br />MINE 1, POND F TO FOIDEL CREEK <br />External Outfall <br />No Discharger] <br />03/31/2011 Page 1 <br />