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,~ <br />DIVISION OF MINERALS AND GEOLOGY <br />Dep <br />STATE OF COLORADO <br />iii <br />Den <br />Pho <br />FAC <br /> <br />iiiiiiiiiiiiiiiiiii <br />artment of Natural Resources ~ ~ ~~~~ N~°~~°~ <br />J IYY1 ,SC.h-~cf.~- ~ <br />} ;ihei mdn ~l. icuuin [ l i 1 T <br />ver. CO 8020} <br />ne: ~ 30} 1 866-3 567 <br />:13031 fl~?$106 <br />DATE: May 27, 1993 <br />TO: Larry Routten ~ <br />FROM: Erica Crosby <br />RE: Hawk's Nest C-81-016 <br />Preliminary Reclamation Plan For the Silo Facility, Coal <br />Stockpile area & Refuse Pile Area <br />After much brain storming I have come up with a preliminary <br />reclamation plan for the Hawk's Nest Mine. Please review and let <br />me know what you think. I'm hoping to start writing the bid specs. <br />sometime next week. <br />TASK 1: Demolish the Coal Silos <br />Per much discussion with Wagner Construction it appears that the <br />Silos can be demolished within a reasonable cost. According to <br />site calculation taken by Ray Wagner, there is roughly 35,000 tons <br />of concrete or 26,000 to 27,000 cubic yards (including swell & <br />rebar). The concrete foundations of the Silos will have to remain <br />because the rail tracks are on top. The most likely scenario is <br />that the Silos would be blasted to the SE towards the river. The <br />tracks would have to be protected and remain open for the loading <br />trains. <br />I originally planned to have the concrete hauled to the refuse <br />disposal area. After much discussion with contractors and Tom <br />Gillis, the best thing to do would be to dispose of the concrete in <br />the existing ponds. The ponds are currently 8-9 feet in depth. <br />They would have to be dug out probably another 10 to 12 feet to <br />allow enough space to dispose of the concrete. At this point in <br />time I do not have the exact dimensions of the pond (I will get <br />this at my next inspection). The material dug out of the pond <br />could be used to cover the disposed concrete. <br />If the pond area is too small, another barrow area can be created <br />to dispose of the concrete. Ray Wagner stated that to construct or <br />modify the pond to dispose of the material would cost the Division <br />$1200,00. This is a bargain compared to the cost of hauling the <br />material to the refuse dump. Another advantage of burying the <br />concrete on site is allowing the County Health Department (owners <br />of the refuse pile) to possibly expand the landfill permit <br />boundary. This would be one less agency to deal with regarding <br />this reclamation plan. <br />SS u~~ ~ ~0~~ Guv Ro oer <br />w~~chael 8. Lont; <br />Division Director <br />