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-~ - - ~~~, III IIIIIIIIIIIII III <br />- ~~~~ <br />' INC. <br />- _ -_ ASudridiary <br />of <br />__ Walern FueGs <br />Assocrafion, brt. <br />Michael J. Weigand, P E <br />Aline Afanager ~ ~ {~, ~ i <br />November 19, ~ ~OV 25 199 <br />Ms . Janet Binns DIVi;,~„•, _ <br />Reclamation Specialist MINERAL ~ ;;_'.. <br />Colorado Mined Land Reclamation Division ' <br />1313 Sherman Street <br />Denver, CO 60203 <br />Re: Annual Processional Certification Document for ll-Portal <br />Sediment Control Pond (DP-1) on the Deserado Mine Property, <br />Bonanza Power Project File No. C-018-81. <br />Dear Ms. Binns: <br />On November 18, 1992, I performed an inspection of the Deserado <br />Mine D-Portal Sediment Control Pond (DP-1) N.P.D.c.S. perl;lit ik001. <br />I am a professional engineer registered in the State of Colorado <br />and my experience fulfills the requirements of the Colorado Surface <br />Coal Mining Reclamation Act. <br />The purpose of my inspection and certification was to ensure proper <br />construction of the D-Portal Sediment Control Pond and to satisfy <br />the requirements of Rule 4.05.6 (11) (a) of the Colorado Mined Land <br />Reclamation Board. In completing my certification, I have <br />conducted an inspection of the D-Portal Sediment Control Pond and <br />construction site. <br />:'he dam inspection showed no problems concerning cracking, erosion, <br />rodent activity, or displacements in th.e following areas; upstream <br />face, downstream face, and the crest. No seepage was located on <br />any of the dam areas. The outlet conduit caas in good shape and no <br />leakage was noted. Tt,e emergency spillway showed ro signs of <br />deterioration or eroaion and the riprap was i.n good conditi~~rl. No <br />effluent quality could be noted at inspection. time, since the pond <br />was not discharging at the outlet. <br />The top soil pile for this area has been seeded and shows.stabla <br />vegetation growth. Removal and stock piling of all .organic <br />material and topsoil prior to water impounding has been completed. <br />Deserado Mine <br />P.O. Box 1067 <br />Rangely Colorado 81648 <br />Trlephone 303/675-8431 <br />Trlecopier 303/675-52?9 <br />