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UNDERGROUND <br />ENGINEERING & <br />ENVIRONMENTAL <br />SOLUTIONS <br /> <br /> <br /> <br />LJ <br /> <br /> <br />1 <br /> <br /> <br /> <br /> <br />oFEICEs <br />Boston <br />Massachusetts <br />Cleveland <br />Ohio <br />Hartford <br />Connecticut <br /> <br /> <br /> <br /> <br /> <br />Los Angeles <br />California <br />Manchester <br />New Hampshire <br />Newark <br />New Jersey ' <br />Portland <br />Maine <br />Rochester <br />New York <br />San Diego <br />California <br />San Francisco <br />California <br />' Washington <br />District of Columbia <br />Peinlyd mi e¢yeled ppwe. <br />31 January 2002 <br />File No. 27630-002 <br />Ciry of Greeley <br />1100 10th Street <br />3rd F1oar <br />Greeley, Colorado 80631 <br />Attention: Todd Williams <br />Subject: Design Summary -Slurry Wall <br />2Sth Avenue Gravel Pit <br />Greeley, Colorado <br />Todd: <br />Haley & Aldrich, lnc. <br />110 16th Street <br />Suite 900 <br />Denver, CO 80202-5202 <br />Te1:303.534.1100 ' <br />Fax: 303.534.1777 <br />Email: DEN®HaleyAldrich.com <br />Haley & Aldrich is pleased to present this design summary report for the subject project. <br />This report was conducted in accordance with the Phase 3 services described in our contract <br />dated Ol October 2001. <br />This report summarizes the subsurface explorations and conditions encountered, key design <br />elements of the slurry wall, construction limits, clay borrow areas, slurry wall protection, and <br />site reclamation. Technical Specifications for the design will be provided under separate <br />cover and incorporated into the up-front specifications, <br />Sincerely yours, <br />HALEY~& AL/D/R71CH, INC. <br />Jay C. Davenport, E.I. <br />Staff Engineer ~_ <br />Tracy J~yrl~n, ~~, P.G. <br />Senior ce P si t <br />Enclosures <br />Steven C. Kuehr, P.E%?~-t`:~~H/o <br />Senior Engineer ~''~.,Fd'Sj~;;;~•'t <br />C:\PROI ECTS\2~630 Greeley\Phase 3-Final Design and SpecificaGonslDesign Sumnwry Repott-dec <br />