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i III IIIIIIIIIIIII III <br />UNITED STATES <br />DEPARTMENT OF <br />AGRICULTURE <br />NATURAL <br />RESOURCES <br />CONSERVATION <br />SERVICE <br />J <br />1626 HIGHWAY 50 WEST <br />PUEBLO, CO 81008 <br />(7191 543-8384 PH <br />(719) 543-3914 FX <br />June 15, 1998 <br />DECEIVED <br />Division of Minerals <br />1313 Sherman Street, <br />Denver, CO 80203 <br />Dear Mr. Keffelew: <br />and Geology <br />Room 215 <br />Kirkland Construction requested <br />reclamation standards on the Two <br />Mr. Kirkland said you would like <br />standard in my reclamation plan. <br />JUN 16 1gg8 <br />n!r~rals & Geology <br />that I write to you regarding <br />Rivers Pit (Permit No M-98-038). <br />clarification on the subsoil <br />My statement in item 2) of the reclamation plan is: "At least 18 <br />inches of subsoil material should remain on-site prior to spreading <br />topsoil". This means there is no need to apply subsoil material <br />from another source unless there is insufficient subsoil material <br />on-site. An example of a situation where subsoil needs to be added <br />would be if an area were mined to an impermeable bedrock. The <br />bedrock would not be a sufficient subsoil material so subsoil would <br />need to be added. The majority of gravel pits I work with do not <br />encounter bedrock. Where bedrock is encountered the operators leave <br />at least 18 inches of gravel material over the bedrock, then add 6 <br />inches of topsoil. The 18 inches of subsoil, plus 6 inches of <br />topsoil, provides 24 inches of material for plant roots. This is <br />the very minimum needed for plant establishment and growth. <br />In the Two Ricers situation, I don't expect bedrock to be <br />encountered. If it is, I would expect that Kirkland Construction <br />would leave 18 inches of subsoil on-site. <br />If you have any questions, please <br />~~~/ ` `" / <br />Richard C. Rhoades <br />Resource Conservationist <br />feel free to call me. <br />xc Kirkland Construction <br />