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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />February 3, 2010 <br />Brian Watterson <br />Twentymile Coal Company <br />Foidel Creek Mine <br />29515 Routt County Road No. 27 <br />Oak Creek, CO 80467 <br />RE: Fourth Quarter 2009 Discharge Monitoring Report, CO-0042161 <br />Dear Mr. Watterson: <br />COLORADO <br />D I V I S I O N O F <br />RECLAMATION <br />MINING <br />SAFETY <br />Bill Ritter, Jr. <br />Governor <br />Harris D. Sherman <br />Executive Director <br />Ronald W. Cattany <br />Division Director <br />Natural Resource Trustee <br />Twentymile Coal Company (TCC) submitted NPDES Discharge Monitoring Report (DMR) for the fourth <br />Quarter 2009, Colorado Department of Public Health and Environment CDPS permit no. CO-0042161on <br />February 1, 2010. <br />Outfall 001A/001 W/MON1 (site 115) did not discharge during the fourth quarter. <br />Outfall 002A flowed each week of October and November. The piping for the outfall froze in December, <br />so no discharge was recorded in December. TCC personnel have place stock tank heaters over the head <br />gate to thaw the ice blockage. One exceedance was reported for 30-day average for BOD 5-day in October <br />2009. The following TSS sample in November was below the TSS limit. <br />Thank you for prompt submittal of this report. <br />Sincerely, <br />Janet H. Binns--, } <br />Enviro ental Protection Specialist II <br />C:/jhb/C82056/DMRs/2009/CO-0042161/4th Q.doc <br />Office of Office of <br />Mined Land Reclamation Denver • Grand )unction • Durango Active and Inactive Mines