REP11228 - Laserfiche WebLink

Home Browse Search

~~ ~~~ ~~. A Subsidr~an~ - - aJ __ = WeVern Fuels Assvadim~. hu. June 4, 1990 • , iii iiiiiiiiiiiiiiii ~. ,:~~r ~:~ ~ ~p _~ _fUfi f~ ,?9: :r;; Stu :~,:.,:. Mr. Tom Gillis Reclamation Specialist Colorado Mined Land Reclamation Division 1313 Sherman Street Denver, Colorado 80203 Re: Professional Certification Document for the Coal Processing Waste Bank on Deserado Mine Property, Bonanza Power Project File No. C-018-81. Dear Mr. Gillis: On June 1, 1990 1 performed an inspection of the Deserado Mine refuse pile sub-areas 1 and 2-3. T am a professional engineer registered in the State of Colorado and my experience fulfills the requirements of Colorado Surface Coal Mining Reclamation Act. The purpose of my inspection and certification was to ensure proper construction of the refuse pile and to satisfy the requirements of Rule 4.09 1 (11) of the Colorado Mined Land Reclamation Board. There are no apparent points of seepage in the pile, and there is no indication of slope failure. The surface drainage facilities were adequately maintained and were working properly. No subdrain system is required by our permit, since oeotechnical investigation for the disposal site revealed no ground water present. Permanent out slopes are being constructed on the toe of sub-area 1 and sub- area 2-3 has been started. These out slopes are stable. A groundwater monitoring well has been installed between sub-area 1 and sub area 2-3. To date no water has accumulated in the well. We have now, to date, a total of 631,063 tons of refuse placed in sub-area 1, and 1,000,819 tons placed in sub-area 2-3. Both the topsoil and subsoil piles for those areas have been seeded and are stable. Removal and stock piling of all organic material and topsoil prior to disposal of refuse has been completed. Deerado M1Lne P.0. fiox 1067 kangely, Colorado 81648 Telephone 303/675-8431 Teiempier 303/675-5:?9