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TR~APPBa 1CINENa INC. iii iiiiiiiiui~iiii Januazy 25, 1999 CERTIFIED NZ067066626 RECE~vEp J A~ 2 9 1999 Ms. Carla Lenkey plviS~on of Ndne~a~s ~ Oeoyo9Y Colorado Department of Public Health and Environment WQCD-PE-B2 4300 Cherry Creek Dr. South Denver, CO 80222-1530 Subject: Fourth Quarter 1998 Colorado Wastewater Disrltarge Monitoring Reports, Permlt No. CO.0032115 Dear Ms. Lenkey: Enclosed are Trapper Mine's Fourth Quarter 1998 Colorado Wastewater Discharge Monitoring Reports for the period 1 0/1 /98-1 213 1 /98. During this quarter, two NPDES outfalls were active. Outfalls 001 and 002 discharged routinely throughout the quarter. Outfalls 003, 005, 006, 008, 009, 010, 011, 012, 013, 014, 015, 016, 017, 019, and 020 did not discharge during the quarter. tJuffall 018 is associated with a sedimem pond which has not yet been constructed. No discharge is reported for this ouffall. Values reported on the enclosed DMRs represent the maximum (or minimum as applicable) monthlyldaily values generated at each ouffall during the quarter. Also enclosed are monthly NOAA weather sllm~+a~ies for the reporting period, seep voltune data for site 011, and WET test report forms as applicable. Two outfalls were sampled for WET analyses during the applicable reporting periods. A two species acute test was completed ar outfall 001 during the fourth quarter and a single species test (C. dubia) was completed at ouffall 002 in July. No exceedences of WET test limitations were observed ai either ouffall. No exceedences of primary effluent limitations occurred during the quarter. Thank you for your cooperation in this matter. Please contact me if you have any questions regarding the enclosed information. Sincerely, Karl C. Koehler Senior Environmental Engineer xCKhck ~CDHPE\99-1AN25J Pxkrme c U. S. Fmvo®wrbal PMecoou A6ary 7. r•w„i...~ CDMG FJe 109.2.7 P.O. Box 187 Craig. Colorado 81626 (970) 824-4401