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BLUE <br />MOUNTAIN January 26, 1999 <br />ENERGY, INC. <br />A Subaldlery of <br />Deseret Generetlon 8 Mr. Dan Mathews <br />Trenemlalon <br />Coopegthe Division of Minerals and Geology <br />3607CeunryRd.65 2148 Broadway, #C-5 <br />HanBary, CO 81648 Grand Junction, Colorado 81503 <br />~~9~ ~~~ ~~~~~~~~~~~~~~~~ <br />999 <br />978-575.8431 RE: Professional Certification for the Coal Processing Waste Bank at the <br />Fa: 970.675.5229 Deserado Mine. <br />Perm it No. C-018-81. <br />Dear Dan: <br />During the fourth quarter of 1998, qualified persons working under my direction and 1 conducted <br />a series of compliance inspections on the active coal processing waste banks located within the <br />Deserado permit area. These inspections were conducted roughly on a bi-weekly basis. <br />I am a professional engineer registered in the State of Colorado and my experience fulfills the <br />requirements of the Colorado Surface Coal Mining Reclamation Act. <br />The purpose of these inspections and subsequent certification is to ensure proper construction of <br />the refuse piles and to satisfy the requirements of Rule 4.10.2 of the Colorado Mined Land <br />Reclamation Board. <br />INSPECTION OF ACTIVE AREAS 2-3. 4 and Sa <br />There are no apparent points of seepage, or indications of slope failure on the active piles. The <br />surface drainage facilities were adequately maintained and were working properly to convey <br />surface runoff. Sediment control structures need continued maintenance and are cleaned out as <br />conditions warrant. <br />The following maintenance work was completed since the last quarterly report: <br />1. Erosion controls along ditches and slope imprinting were maintained on sub-area 2/3- <br />4. <br />2. Spreading and compaction of refuse on combined sub-areas 2/3 and 4 during October <br />and November. <br />Our permit requires no sub-drain system, as geotechnical investigations for the disposal site <br />revealed no groundwater present. <br />Permanent out slopes remain at approximately 85% complete on the toe of sttb-area 2-3 attd <br />approximately 55% complete on the toe of sub-area 4. These slopes appeared stable. The <br />combination of these pits began following [he completion of the sediment pond enlargements and <br />runoff diversion channel construction during the 3rd quarter. Pit 5 consists of a thin layer of <br />refuse over the entire area. <br />The groundwater monitoring well installed between sub-areas 1 and 2-3 has remained dry [o date. <br />