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III IIIIIIIIIIIII III <br />©0~ <br />Twentymile Coal Company <br />29515 Routt County Road # 27 <br />Oak Creek, Colorado 80467 <br />(970)879.3800 <br />F°~.~ ~~.IVED <br />Jn~'! 3 ~ 20D2 <br />January 25, 2002 Lwsw+~ ai ~a~neruls and Ge010~ <br />Ms. Carla Lenkey <br />Colorado Department of Public Health and Environment <br />Water Quality Control Division -Permits and Enforcement <br />4300 Cherry Creek Drive South <br />Denver, C080222-1530 FrS~ ~7irP~ <br />RE: PERMIT CO-0036684: 4th QUARTER 2001 DMR SUBMITTAL <br />Dear Ms. Lenkey: <br />Please find enclosed the above referenced discharge monitoring reports for the period from October 1, 2001 through <br />December 31, 2001. No permit limitation exceedences occurred during the period. <br />Quarterly Whole EfFluent Toxicity (WET) tests were conducted for Outfall 001 the week of November 12th, 2001. Test results <br />indicate that the effluent was not acutely toxic to fathead minnows or Ceriodaphnia dubia survival. Copies of the CDPS WET <br />Test Report Forms for both species are included with this submittal. <br />Please contact me directly at (970) 870-2750 for any further questions or additional information. <br />~ ~ <br />~. ~~ i ~~ <br />Brian Watterson <br />Environmental Geologist <br />Twentymile Coal Company <br />Enclosures <br />cc: DMG <br />CWPS Permit No. CO-0036684 file <br />