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/~ Kennecott <br />~ . Ener9-y <br />Colowyo Coal Mine <br />5731 State Highway 13 <br />Meeker, Colorado 81641 <br />Telephone: (970) 824-1531 <br />Fax: (970) 824-1598 <br />r-Kurlls R. Blunt <br />~LQ r~Tr~8R~17ecftNClan <br />Jnly 1, zoos <br />Mr. Jeff Coombe <br />Colorado Deparhnent of Public Health and Environment <br />Water Quality Control Division <br />4300 Cherry Creek Drive South <br />Denver, CO. 80222-1530 <br />;IUL 0 5 2005 <br />Division of&linerals & Geatogy <br />RE: WRITTEN NOTIFICATION OF CDPS WATER QUALITY ALLOWANCE EXCEEDENCES AT OUTFACES <br />OOIA AND Ol OA; COLOWYO COAL COMPANY L.P. (COLOWYO); CDPS NO. CO-0004s161 <br />Dear Mr. Coombe, <br />Colowyo is submitting this letter to fulfill the reporting requirements set forth in our CDPS permit in regards to <br />providing a written notification of an apparent exceedence of the Total Suspended Solids water quality allowance MCL <br />within five days after the issue is identified. The verbal notification requirement for both WQCD and CDMG were <br />fulfilled within the maximum 24 hour notification window. CDMG will be receiving a copy of this letter in order to <br />fulfill written notification responsibilities Colowyo has with their agency. <br />Samples were taken at Outfall OOIA and Ol OA on June 13, 200s. Laboratory analysis of these samples revealed Total <br />Suspended Solids concentrations of 44 mg/L at 001 A and 76 mg/L at OIOA, above the allowable MCL of 35 mg/L. <br />Colowyo is in the process of investigating why these apparent exceedences have occurred and will be in contact with <br />you in the near future as these laboratory findings will be incorporated into the upcoming second quarter DMR <br />submittal. <br />Thank you for your consideration. Please feel free to contact me if you have any questions or concerns. I can be <br />reached at (970)824-1531. <br />Since ~7~ <br />Kurtis R. Blunt <br />Environmental Technician <br />CC: CDMG/Byron W. w/encl <br />NPDES Reports Hinder w/encl <br />CP?LL2 2005 <br />Mtelope Mine • Colowyo Mine • Cordero Rojo Mine • Jacobs Ranch Mine • Spring Creek Mine <br />A member of the Rio Tinto Group <br />