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iii iiiiiiiiiiiii iii <br />Colowyo Coal Company, L.P. <br />5731 State Highway 13 I I,/xu~~ ~ ~ `//~ Kennecott <br />Meeker, Colorado 8164( `f <br />(970) 824.1531 ` _ Energy <br />(970) 824-1598 FAX <br />Kimberley A. Wolf <br />Coloavyo Coal Company L.P. ~' ~"' '' <br />Environmental Engineer <br />July 18, 2001 <br />Ms. Carla Lenkey ,DECEIVED <br />Colorado Department of Public Health and Environment <br />Water Quality Control Division ~UL 20 2001 <br />4300 Cherry Creek Drive South <br />Denver, CO. 80222-1530 DivlsionelMinerals6Geoiogy <br />RE: COLOWYO COAL COMPANY L.P. (COLOWYO); CDPS NO. CO-00045161 <br />FIRST QUARTER FOLLOW UP LETTER FOR OUTFACES 001A AND OOSA <br />Dear Ms. Lenkey, <br />Colowyo is submitting the additional information you requested via voice mail on <br />Wednesday June 6, 2001 pursuant to the First Quarter 2001 Discharge Monitoring <br />Report (DMR). <br />Surveys of the Streeter Pond (Outfall 001 A), used for SEDCAD modeling in 1998 show <br />that the pond can contain 2.6252 acre-feet of water before discharging. The Streeter <br />Pond was surveyed in June of 2001 and found to have a storage volume of 1.3424 <br />acre-feet. Based on this most recent survey 51 %of the 1998 as-built capacity remains. <br />The Stoker Siding Pond, also known as Outfall 005A, was surveyed in 1998 and found <br />to contain .3005 acre-feet of water prior to discharging. Sediment was removed from <br />the pond in September of 1998, which caused the pond to gain in volume from the 1998 <br />as-built. The current storage volume of the Stoker Siding pond is .6268 acre-feet, or <br />+209% of the 1998 as-built. <br />Please contact me at the above phone number if you require additional information. <br />Respectfully, <br />Kimberley A. Wolf <br />Cc: JD Harmon Mr. Byron Walker <br />SR Hinkemeyer Colorado Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, CO. 80209 <br />