Laserfiche WebLink
.: ~ _ • iiiiiiiiiiiiiiiiii~ • <br />POWDERHORN COAL COMPANY <br />POND NO. 6 - REFUSE DISPOSAL AREA NO. 1 <br />CERTIFICATION <br />I, Larry M. Reschke, PE 19691, hereby certify that Pond No. 6 <br />located at Powderhorn Coal Company's Cameo Refuse Disposal Area <br />No. 1 meets or exceeds the design requirements of plans submitted <br />to and approved by Colorado Mined Land Reclamation Division in <br />Appendix X, Volume 3; Exhibit 20, Volume 5; and Appendix WW, <br />Volume 7 of Powderhorn permit application No. C-81-041. The pond <br />was installed in 1980 and included a combination primary and <br />emergency spillway. The pond does not match the proposed <br />dimensions, but does meet the design volumes. The attached <br />diagram shows the plan view of the pond below the emergency <br />spillway and shows the volumes of the pond. These as-built <br />dimensions were taken from a survey taken October 27, 1988, and <br />do not reflect sediment accumulated since that time. This <br />certification is a follow up to work done in November and <br />December, 1991 to establish separate emergency and primary <br />spillways. A 6" PVC primary spillway was installed with an 18" <br />ADS plastic oil skimmer/trash rack at that time. <br />~E <br />