Laserfiche WebLink
.1. t. bTUVER Sr. ASSOCIATES <br />2768 COMPASS DRIVE, SUITE 101 <br />GRAND JUNCTION, COLORADO 81506 <br />PHONE: (970) 245-4101, FAX 242-7908 <br />MINE ENGINEERING <br />MINE RECLAMATION <br />999 <br />CML ENGINEERING <br />CONST. MANAGEMENT <br />January 24, 1998 <br />Mr. David Berry <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Re: Bear Coal Company <br />Permit C-81-033 <br />RECEIVED <br />JAN 2 8 1998 <br />Division of Minerals 8 Geology <br />Dear Mr. Berry: <br />Enclosed is a summary of the water quality analysis taken during December and <br />January on the water being discharged from outfall 001 at the Bear No. 3 Mine. Two <br />full suite samples have been taken but only one set of laboratory results are available <br />at this time. A demonstration of acute WET occurred during the routine fourth quarter <br />1997 test sampled on December 16"'. Bear conducted accelerated testing using the <br />single species found to be more sensitive (Ceriodaohnia dubia). Two accelerated tests <br />were performed on C. dubia. The first test was completed on January 5'" and the <br />second test was completed on January 11, 1998. Neither test indicated the effluent <br />was toxic to C. dubia. Since two consecutive tests passed, no pattern of toxicity is <br />found and the toxicity episode is considered to be ended. <br />Please call if you have any questions. <br />Sincerely, <br />~~~ w~~ <br />J. E. Stover, P.E. <br />Consulting Engineer <br />cc: Bear Coal Company <br />