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J <br />J <br />Empire Laboral,tories, Inc. <br />A Division of The Terracon Cornpanies, Inc. <br />PO Box 503 301 No. Hawes <br />Forl Collins, Colorado 80522 <br />(30:'~) 484-0359 <br />FAX No (303) 484-0454 <br />Chesser C Smilh, PE <br />Neil R. Sherrotl. C PG <br />February 2, 1994 <br />Holnam, Inc. <br />P. O. Box 2227 <br />Fort Collins, Colorado 80522 <br />Attn: Mr. Paul Thomsen, Plant Engineer <br />Re: Geotechnical Engineering Report, Slab Canyon Quarry Reclamation <br />Larimer County, Colorado <br />ELI Project No. 20945006 <br />Empire Laboratories, Inc. (ELI) has completed a geotechnical engineering exploration for the <br />proposed project to be located at the Slab Canyon Quarry approximately 20 miles north of Fort <br />Collins, Colorado. This study was performed in general accordance with our proposal number <br />D2094010 dated January 13, 1994. <br />The results of our engineering study, including the sample location diagram, laboratory test results, <br />and the geotechnical recommendations needed to aid in the design and construr:tion of earth <br />connected phases of this project are attached. <br />The site observation indicated conditions which are typical of soils commonly found in the foothills <br />area north of Fort Collins. Bedrock encountered consists of sandstone and limestone of the <br />Ingleside Formation. Stockpiled material to be used to construct the berms consists of sandstone <br />excavated by blasting. Laboratory tests indicate the excavated material is nonelastic, pervious <br />and has high shear strengths. <br />Based on the geotechnical engineering analyses, site observation and laboratory test results, it is <br />our opinion the proposed load-out benches will be stable at the planned slope of 1 %:1. <br />Other design and construction details, based upon geotechnical conditions, are pn~sented in the <br />report. <br />Olllces of The Terracon Companies, Inc. Geolechnlcel, Enrlronmenlal entl Mrlleriels Engineers <br />Arizona. TOC500 ^ Coloratlo' Colorado Spnngs. Denver. FI. Collins. Greeley. Longmont ^ Idaho: Boise ^ Illinois Bloomington. <br />Chicago. Rock Island ^ Iowa Cedar Falls. Cedar Rapids. DavenDOrl. Des Moines. Sloan Lake ^ Kansas Lenexa, Topeka. <br />Wichita ^ M~nnesola' SI Paul ^ Missouri. Kansas Gly ^ Nebraska' Lincoln, Omaha ^ Nevada Las Vegas <br />^ Oklahoma: Oklahoma Cily. Tulsa ^ Texas' Dallas ^ Ulah Sall Lake Cily ^ Wyoming. Cheyenne <br />GUALITY ENGINEERING SINCE 1965 <br />