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RC ROLLIN CONSULTING <br />970-454-0404 <br />"~ ~ <br />~y~; ~ >. <br />` ~ '®V <br />~Q <br />~;rse HOV ~'~ ?40'1 <br />no/nylnere's eerCep~egY <br />November 4, 2002 <br />Mr. Thomas A. Schreiner <br />Environmental Protection Specialist ,J <br />State of Colorado <br />Division of Minerals and Geology <br />1313 Sherman St. Room 215 <br />Denver, CO 80203 ~ <br />Re: NCCI Pit #1, FIle No. M-2001-107 <br />Deaz Mr. Schreiner, <br />Northern Colorado Constructors hereby requests that the bond requirement for the <br />clay liner be reduced to 20% of the total amount. We have attached the following information <br />to support this request. <br />Technical specifications which NCCI will follow to construct the clay liner. <br />A sketch of the proposed cross-section of the liner. <br />A gravel pit liner evaluation prepared by Terracon Inc. <br />Please review this information and advise us regazding your decision. <br />Respectfully, <br />Rollin Consulting <br />Ken Rollin P.E. <br />NCCI 99-517-002 <br />840 EAGLE DRIVE, EATON, COLORADO 80615 <br />