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ROCKY MOUNTAIN CONSULTANTS, INC. <br />A TETRA TECH COMPANY <br />RECEIVED <br />Nov o z zooz / <br />November 6, 2002 Uiuisl°n of Minerals and Ge°Iogy <br />Mr. Gregg Squire <br />Colorado Dept. of Natural Resources <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />ern- ~ <br />RE: Hall-Irwin Corporation's '~ <br />/The Shores Resource -Firestone, Colorado <br />Amendment Application for MLRB 112 Permit #M-1998-013 / <br />RMC Job No. 80.0636.026.04 <br />Deaz Mr. Squire: <br />On September 30, 2002, we submitted an application to amend the current MLRB 112 <br />permit for The Shores gravel mine site in Firestone, CO. The purpose of the amendment <br />application is to increase the total mined area to approximately 221-acres of the 309.83- <br />acre parcel. Since the original application was submitted, Hall-Irwin Corporation has <br />determined that the water storage reservoirs described in the reclamation plan will need <br />to be lined. Two separate slurry walls will be constructed around the mined areas to <br />contain the water within the reservoirs for long-term storage. On October 30, 2002, <br />Danna Ortiz spoke to Cazl Mount about how to modify the amendment application. <br />Pursuant to his request, we have enclosed two copies of the revised maps along with this <br />letter of explanation. We understand that the Public Notice for this application will need <br />to be re-published and that the 90-day application review period will begin on the date <br />this letter is accepted by the DMG office. <br />The following are the proposed changes to the application (the numbering corresponds to <br />the original amendment application submitted on September 30, 2002): <br />Exhibit D -Mining Plan <br />B. Operational Methods <br />6. Slurry Wall: Hall-Irwin wilt construct two slurry walls around the <br />mining areas; one around phases 4, 5, 6 and 7, the second around phases 8 and <br />9- At this time it is not known when the two slurry walls will be constructed. <br />CIVIL AND ENVIRONMENTAL ENGINEERING PLANNING <br />Inc <br />1900 S. SunseT, Suite 1-F <br />Longmont, CO 80501 <br />(303) 772-5282 <br />FAX (303) 665-6959 <br />VIA OVERNIGHT MAIL <br />www.rmcco.com <br />