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~ ~~ ~ III IIIIIIIIIIIII III <br />PICKETT <br />ENGINEERING, INC. <br />April 20, 2001 <br />Erica Crosby <br />Division of Minerals and Geology <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />RE: Technical Revision to S&H Mine 112 Application <br />Platte Sand and Gravel, LLC <br />File No. M-2000-158 <br />Response to Hydrologic Adequacy Review <br />PEI No. 01-006 <br />Dear Ms. Crosby: <br />RECEBVE® <br />APR 2 3 2001 <br />Division of Minerals and Geology <br />Enclosed is a response to the aforementioned adequacy review. The contents include a <br />flood mitigation plan. The map is color coded on an 11" x 17" size sheet and addresses <br />the location of sensitive areas with potential for excessive erosion during flooding events. <br />Cross-sectional views of the design of the protection of the mitigation measures, as well <br />as an itemized cost for installation are included. As well, a discussion of the schedule of <br />when these improvements would be installed is provided. <br />This information has been forwazded to the Clerk to the Board of Weld County Board of <br />County Commissioners. We will forward to you proof of submittal within the next three <br />days. If you have any questions, please do not hesitate to call me. <br />Sincerely, <br />PICKETT ENGINEERING, INC. <br />'s A. ickett, P.E. <br />Presi ent <br />KAP/jz <br />enclosures <br />808 8th Street <br />Phone (970)356-6362 <br />Greeley, CO 80631 <br />-- Fax (970) 356-6486 <br />