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.~ <br />STATE OF COLORADO <br />Bill Owens, Governor <br />Dennis E. Ellis, Executive Director <br />Dedicated to protecting and improving the health and environment of the people of Colorado <br />4300 Cherry Creek Dr. S. <br />Denver, Colorado 80246-1530 <br />Phone (303) 692-2000 <br />TDD Line (303) 691-7700 <br />Located in Glendale, Colorado <br />http://www.cdphe.state.co.us <br />~ October 20, 2006 <br />Laboratory Services Division <br />8100 Lowry Blvd. <br />Denver, Colorado 60230-6928 <br />(303) 692-3090 <br />Michael Ludlow, Mine Manager <br />Twentymile Coal Company <br />29515 Routt County Road #27 <br />Oak Creek, CO 80467 <br />RE: Reported Violation for CDPS Permit No: COG072272 <br />Dear Nlr. Ludlow: <br />The self-monitoring data you have provided on your Discharge Monitoring Reports indicates a violation of the <br />discharge permit conditions as indicated below: <br />Report Outfall <br />Period Number Parameter <br />August 2006 OOlA Total Suspended Solids mg/L <br />August 2006 OOlA Total Suspended Solids mg/L <br />Reported <br />Result s <br />94 (7-day avg.) <br />54 (30-day max.) <br />Permit <br />Limitations <br />45 (7-day avg.) <br />30 (30-day max.) <br />It is imperative that the necessary steps be taken to maintain compliance with permit conditions at all times. Please <br />reply to this Division in writing, by November 3, 2006, describing what actions and measures you have taken or will <br />be taking to abate this condition. The Division has received your letter of September 28, 2006, however, Division <br />records indicate that we have not received your July 2006 DMR's. Please submit a copy of these records with your <br />response letter. <br />If the dewatering activities covered under this pern>it are completed, explain what actions and measures you will take <br />on future projects to ensure compliance. Continued noncompliance may result in a formal enforcement action <br />including the imposition of penalties up to S 10,000 per day of violation. <br />If you have any questions regazding this matter, please contact me at (303) 692-3634. <br />Sincerely, <br />Kelly Mor~ V <br />Clean Water Compliance Assurance Unit <br />Compliance Assurance and Data Management Section <br />WATER QUALITY CONTROL DIVISION <br />xc: Routt County Department of Environmental Health <br />MS3 File <br />ec: Andy Poirot, D.E., Technical Services Uni[, WQCD <br />Betsy Beaver, Facility Operator Program, WQCD <br />