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oaizsioo os:as ~so3 zas t <br />L.G. EVERIST, INC. <br />April2i, 2000 <br />Erica Crosby <br />Division of Minerals and Geology <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />LG E~BRIST <br />CO• RATE OFFICE <br />30D S. PHILLIPS AVE. • SUITE 200 <br />P.O. BOx 5929 <br />SIOUX FALLS. SD 57117-5829 <br />PHpNE fi06 33a 5000 <br />rAx 605.334365E <br />MOUNTAIN DIVISION <br />lUG7 t. tltl I H AVtNUt • SUI i t 2UU <br />HENDERSON, COLORAD060640 <br />303-267-8606 <br />FAX 303-269- 1349 <br />Subject Adequacy Review Response, Application for Regular 112 Permit, <br /># M-89-120, Fort Lupton Sand and Gravel Mine <br />Dear Erica; <br />Following are commitments by L.G. Everist, Inc. in regards to the Fort Lupton permit: <br />LGE will submit as a Technical Revision a Quality Assurance and Quality Control (QAlQG) plan for the <br />slurry wall construction to the Division of Minerals and Geology. LGE will not commence slurry wall <br />construction until the DMG has approved our Quallry Assurance and Quality Control (QA/QC) plan. As <br />mentioned in my April 71 letter, the (OA/QC plan, which will be an integral part of the plan for the slurry <br />wall construction, will be designed and certified by a Colorado registered engineer and further approved <br />by the Office of the State Engineer (SEO). <br />2. LGE wilt provide information from boreholes at the site from the upcoming drilling we plan to conduct to <br />facililale lFre design of the slurry wall. The information groen to the DlVlslon on the boreholes will include <br />the depth to gravel and to bedrock, I}le type of hedrock, and any variability and depth of weathering of <br />the bedrock. This information shall be kept confidential by the Division under Rule 1.3 of the <br />Construction Material Rules. <br />Thank you for sending the recalculated reclamation cost summary, which now includes the costs pertaining <br />to the reconstruction of the ditch. <br />If you have any questions or concerns regarding this response, or iF anything else is required for adequacy, <br />plcasc contact me immediately. Thank you. <br />Sincerely, <br />Lynn May <br />Regulato Compliance <br />a: R.A. Everist, L.G. Everist, Inc. <br />Robert Laird, Banks 8 Gesso <br />Carl Mount, Division of Minerals and Geology <br />f~ooz <br />v <br />v <br />LrwFL-adyres;4-n ,?7no <br />