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NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) <br />DISCHARGE MONITORING REPORT (DMR) <br />Form Approved <br />OMB No. 2040-0004 <br />PERM ITTEE NAM E/ADDRESS (Include Facility Name/Location if Different) <br />NAME: Colowyo Coal Company LP <br />ADDRESS: 5731 State Highway 13 <br />Meeker, CO 81641 <br />000045161 002-A <br />PERMIT NUMBER DISCHARGE NUMBER <br />DMR Mailing ZIP CODE: 81641 <br />MINOR <br />FACILITY: COLOWYO MINE <br />LOCATION: 5731 SOUTH HIGHWAY 13 <br />MEEKER, CO 81641 <br />ATTN: KEITH HALEY, MINE MANAGER <br />MONITORING PERIOD <br />MM/DD/YYYY MM/DD/YYYY <br />FROM 07/01/2010 TO 09/30/2010 <br />(SUBR JC) MOFAT <br />WORK AREA POND TO TAYLOR CREEK <br />External Outfall <br />No Discharge <br /> <br />PARAMETER QUANTITY OR LOADING QUALITY OR CONCENTRATION NO. <br />EX FREQUENCY <br />OF ANALYSIS SAMPLE <br />TYPE <br /> VALUE VALUE UNITS VALUE VALUE VALUE UNITS <br />pH SAMPLE ...... ...... ...... ....., <br /> MEASUREMENT <br />0040010 <br />Effluent Gross PERMIT <br />REQUIREMENT «'.'.' ,.. 6.5 <br />MINIMUM ...... 9 <br />MAXIMUM SU <br />Monthly <br />INSITU <br />Solids, total suspended SAMPLE ... .... ,. ..,... .,..., <br /> MEASUREMENT <br />0053010 <br />Effluent Gross PERMIT <br />REQUIREMENT 35 <br />30DA AVG 70 <br />DAILY MX mg/L <br />Monthly <br />GRAB <br />Solids, settleable SAMPLE <br />., <br />.... <br /> MEASUREMENT <br />005451 0 PERMIT ...•`" ".."' Req. Mon. Req. Mon. mUL <br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX Monthly GRAB <br />Iron, total recoverable SAMPLE <br /> MEASUREMENT <br />0098010 <br />PERMIT <br />.,. <br />...... <br />"..,.. <br />....,. <br />1 <br />Req. Mon. <br />mg/L <br />Gross REQUIREMENT 30DA AVG DAILY MX Monthly GRAB <br />Oil and grease SAMPLE <br /> MEASUREMENT <br />0358210 PERMIT 10 mg/L <br />Effluent Gross REQUIREMENT INST MAX Contingent GRAB <br />Benzene, ethylbenzene, toluene, SAMPLE <br />xylene combination MEASUREMENT <br />303831 0 PERMIT Req. Mon. 1 mg/L nee Per <br />Effluent Gross REQUIREMENT AVERAGE INST MAX Monthly <br />Discharae GRAB <br />Flow, in conduit or thru treatment plant SAMPLE <br /> MEASUREMENT <br />50050 1 0 PERMIT Req. Mon. Req. Mon. Mgal/d <br />Effluent Gross REQUIREMENT 30DA AVG DAILY MX y INSTAN <br /> <br />NAMEITITLE PRINCIPAL EXECUTIVE OFFICER I verify under penalty of law that this document and all attachments were prepared under my direction or <br />supervtstonineccmd.- veithasystemdmignedtoassure that qualified personnel properly gather and TELEPHONE DATE <br /> evaluate the information submitted. Based on my inquiry of the person or persons who manage the <br />y? <br />F-. Y system, or those persons directly responsible for gathering the information, the information submit[ d is, <br />and complete. I am aware that there are significant <br />to the best of my knowledge and belief <br />true <br />accurate i / <br />Q zo /,D <br /> , <br />, <br />, <br />peni.e nsarsubmittingfalseinfmnation,includingthepossibility oftmeandimprisonment forlooming <br />r SIGNA URE OF PRI PAL EXECUTIVE OFFICER OR <br />TYPED OR PRINTED HORI2ED AGENT <br />AREA Code <br />NUMBER <br />MM/DD/YYYY <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />SETTLEABLE SOLIDS LIMIT APPLIES ONLY IF <=10YR,24HR PRECIP EVENT IS CLAIMED. IF CLAIM APPROVED BY WQCD,TSS & IRON LIMITS WILL NOT BE APPLIED TO REPORTED MEASUREMENTS- SEE I.A.2, PG. <br /> 3 FOR <br />BURDEN OF PROOFREQUIREMENTS. OIL & GREASE - I.B.12, PG. 5. BTEX MONITORING REQD ONLY IF WASHBAY DSCH TO WRK AREA POND <br />EPA Form 3320-1 (Rev.01106) Previous editions may be used. Page 1