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COLOWYO COAL COMPANY L.P <br />5731 State Highway 13 <br />Meeker, Colorado 81641 <br />(970)824-1531 <br />(970) 824-1598 FAX <br />WOLFK@KENNECOTT.COM <br />Kimberley A. Wolf <br />Environmental Engineer <br />April 20, 1998 <br />III IIIIIIIIIIIIIIII <br />/~ .......:~~.val' <br />/~ .Energy ,- <br />CofowyoCoafCorrtPatit<yL.P '~,~~d' <br />RECEIVE <br />Ms Carla Lenkey <br />Colorado Department of Public Health and Environment <br />Water Quality Control Division <br />4300 Cherry Creek Drive South <br />Denver, CO. 80222-1530 <br />APR 21 ~ggg <br />Division of Minerals & Geolc+gv <br />RE: COLORADO WASTEWATER DISCHARGE PERMIT SYSTEM NUMBER <br />COG- 850017; DISCHARGE MONITORING REPORT FIRST QUARTER; 1998 <br />Dear Ms Lenkey, <br />Colowyo Coal Company L.P. (Colowyo) is submitting the First Quarter 1998 Discharge <br />Monitoring Report to the Colorado Department of Public Health and Environment, Water Quality <br />Control Division. <br />Discharges occurred at outfalis OOlA, 002A, 004A, 007A, and OlOA. The self-monitoring data <br />provided on the enclosed DMRs indicate levels above certain discharge permit conditions as <br />indicated and discussed below, which primarily relate to high temperatures causing inflow from <br />snowmelt into Colowyo's sediment control ponds. <br />Outfall <br />Number <br />004A <br />007A* <br /> <br />Parameter <br />Total Fe, mg/1 <br />TSS, mg/I <br />TSS, mg/l <br />Total Fe, mg/l <br />Total Fe, mg/l <br />TSS, mg/1 <br />TSS, mg/l <br />SS, mUl <br />Permit <br />Conditions <br />3.5 (30 day avg) <br />70 (daily max) <br />35 (30 day avg) <br />3.5 (30 day avg) <br />7.0 (daily max) <br />35 (30 day avg) <br />70 (daily max) <br />0.5 (daily max) <br />Da e <br />n/a <br />3/16/98 <br />n/a <br />n/a <br />3/23/98 <br />3/23/98 <br />3/23/98 <br />3/23/98 <br />Reported <br />Re t <br />4.04 (30 day avg) <br />71 (daily max) <br />59.5 (30 day avg) <br />18.4 (30 day avg) <br />18.4 (daily max) <br />1330 {30 day avg) <br />1330 (daily max) <br />0.8 daily max <br />*Outfall 007A only one sample was taken during the quarter <br />C~S X . ~5+~ 3 ~ M g ~ . 5~1o e ~s . 18 ~ 9 ~,.. <br />