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III IIIIIIIIIIIII III <br />999 <br />~ TWBNTYM166 <br />~ COAI. COMPANY <br />A Cyprus Amex Company <br />Twentymile Coal Corporation <br />29515 Routt County Road # 27 <br />Oak Creek, Colorado 80467 <br />970-879-3800 <br />October 26, 1998 RECEIVED <br />Ms. Carla Lenkey 0 CT 2 9 1998 <br />Colorado Depanmen[ of Public Health and Environment <br />Water Quality Control Division -Permits and Enforcement Division of Minerals 8 Ge010Jy <br />4300 Cherry Creek Drive South <br />Denver, CO 80222.1530 <br />RE: PFRMiT CO-0034142: 3~ O1 DARTER- 1998 DISCHARQF. MOMTORiNG REPORTS <br />Dear Ms. Lenkey: <br />Enclosedu a completed and signed copy of the above referenced discharge monitoring report required by Cyprus <br />Empire Corporation's (CEC) permit for July 1, 1998 through September 30, 1998. Also, enclosed are copies of the <br />COLORADO -CDPS WET TEST REPORT FORM - CHROMC forms for required quarterly testing. No permit <br />limitation exceedences occurred during the quarter. <br />For Outfalls 022 and 024, more parameters were reported then required in the field statistics because Routine Chronic <br />Wet Testing was being performed at that time. <br />Total Suspended Solids (TSS) values for both Outfalls 022 and 024 are required to be reported twice/month. This data <br />was only gacheredonce/month for both Outfalls during [he quarter. The sampling requirements and procedure have been <br />reviewed with all ponies involved, to minimize the potential of this reoccuring in the future.The historic TSS data, along with <br />the TSS data being submitted for this quarterly reporting period, for both Outfalls demonstrates compliance. <br />Chronic Whole Effluent Toxicity (WET) testing was performed at Outfalls 022 and 024 and indicated no toxicity to <br />P. prome/as or G dubia. Copies of the CDPS WET Ten Report Forms for both species are included in the submittal. <br />Oucfalls 003, 004, 007, 009, 011, 012, 013, 014, 015, 016, 017, 018, 019, 020, 021, and 023 along with Site 3001 did not <br />dischazge during this period. <br />Please contact me at (970) 879-3800, ext. 2805 for any further questions or additional information. <br />CYPRUS EMPIRE CORPO1RATION <br />~C'Q+s^'l 1 CR1/ <br />Joe Shoemaker <br />Environmental Specialist <br />enclosures <br />cc: DMG <br />CWPS Permit No. CO-0034142 file <br />