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<br />Geotechnical Engineering Report <br />Proposed Gravel Mine , <br />Terracon Project No. 21995030 <br />Terracon <br />' 0.5 million cubic yards of overburden <br />0.3 million cubic yards of silty sand <br />1.1 million cubic yards of well graded sand with gravel. <br />' The ratio of overburden to sand and gravel is approximately i to 2.8. It is our opinion that this ratio <br />may allow for an economically feasible gravel mine. The gravel appears to be composed of durable <br />metamorphic and igneous rock fragments. Based on the test borings that were performed at the site, <br />it is our opinion that the sand and gravel encountered at the site is suitable for use as a construction <br />aggrega[e. li snowc be no[ep tna[ these es[imates are basep on widely spaces [est borings anp <br />'variations in the soil profile may be encountered when excavations are performed. <br />The individ::al contractor(s) is responsible for designing and constructing stable, temporary <br />t excavations as required to maintain stability of both the excavation sides and bottom. All excavations <br />should be sloped or shored in the interest of safety following local, and federal regulations, including <br />' current OSHA excavation and trench safety standards. <br />GENERAL COMMENTS <br />' The analysis and recommendations presented in this report are based upon the data obtained From <br />the borings performed at the indicated locations and from other information discussed in this report. <br />' This report does not reflect variations which may occur between borings or across the site. The nature <br />and extent of such variations may not become evident until construction. If variations appear, it will be <br />necesszry tc reevaluate the recommendations of this report. <br />' The scope of services for this project does not include either specifically or by implication any <br />environmental assessment of the site or identification ^f ccr.ta~.inated cr hz:rdeus materials or <br />' conditions. If the owner is concerned about the potential for such contamination, other studies should <br />be undertaken. <br />'This report has been prepared for the exclusive use of our client for specific application to the project <br />discussed and has be=~ prepay=d ir. acccrdar.ce ~.vith generally zc~~p±ed geotechnic.l engineering <br />practices. No warranties, either express or implied, are intended or made. In the event that changes <br />' in the nature, design, or location of the project as outlined in this report, are planned, the conclusions <br />and recommendations contained in this report shall not be considered valid unless Terracon reviews <br />'the changes, and either verifies or modifies the conclusions of this report in writing. <br />1 <br />1 <br />1 <br /> <br /> <br /> <br />