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7~ <br />COLORADO YAMPA <br />COAL COMPANY <br />III IIIIIIIIIIIIIII_i <br />999 <br />Colorado Yampa Coal Company <br />29515 Routt County Road #27 <br />Oak Creek, Colorado 80467 <br />A Cyprus Amax Company (970) 879-3800 <br />February Z5, 1998 <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, CO 80222-1530 <br />RE: PERMIT CO-0027154; JANUARY 1998 DMR SUBMITTAL <br />Dear Ms. Lenkey: <br />RECEIVE <br />f :.~. ~ C <". i~SB <br />Division of Minerals & Geology <br />Please find enclosed the above referenced discharge monitoring report for the period from January 1, 1998 <br />through January 31, 1998, No permit limitation exceedences occurred during the quarter. <br />Outfalls 002, 004, 006, 007, 008, 009, 010, 016, 017, and 020 did not discharge during the period. <br />Accelerated testing for Outfall OOO1X was initiated following failure of routine Chronic Whole Effluent <br />Toxicity testing during the week of November 17, 1997. The automatic compliance schedule for <br />accelerated testing was followed through the month of January, with Outfal1001X eventually <br />demonstrating a "pattern of toxicity". Notification of this "pattern of toxicity" and copies of the CDPS <br />WET Test Report Forms for this series of accelerated testing were submitted in my correspondence of <br />February 11, 1998. <br />Accelerated testing for Outfall OOSX was initiated following failure of routine Chronic Whole Effluent <br />Toxicity testing during the week of December 8, 1997. The automatic compliance schedule for this <br />accelerated testing also continued through the month of January. Results of this series of accelerated <br />testing will be submitted upon completion of the required testing and our receipt of the final report. <br />If you have any questions or need additional information please contact me at (970) 870-2730. <br />Colorado Yampa Coal Company <br />~Q_ - <br />Joe Shoemaker <br />Environmental Specialist <br />encl. <br />cc: DMG <br />EPA <br />CWPS Permit No. CO-0027154 file <br />