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M00079GE <br /> !j 4/20/2000 <br /> Page Three <br /> rl <br /> base aggregate may be altered by adjusting the amount of the <br /> �I overburden sandy clay soil materials to the mix during crushing. <br /> It may be necessary to spoil much of the overburden sandy clay <br /> soil materials to maintain an appropriate range for the Atterberg <br /> Limits and sieve analysis of the product material . We are <br /> rI available to discuss this with you. <br /> It has been our experience in Delta County that many of the <br /> 'I aggregate quarries have difficulty maintaining adequate plasticity <br /> to reduce ravelling of unpaved gravel road surfaces. If the <br /> material is used for an unpaved gravel road surface it may be <br /> necessary to adjust the amount of minus 200 sieve size material to <br /> provide adequate plasticity for the desired use. We are available <br /> to discuss this with you. <br /> If you have any further questions concerning the geotechnical <br /> engineering aspects of your project or if we may be of further <br /> assistance please contact us. <br /> Respectfully submitted, <br /> LAMBERT AND ASSOCIATES Reviewed- yY__ <br /> 'I /NWJ/nr <br /> n W. ston, P.E. en s R..E.. <br /> r <br /> .I <br /> f <br /> 1 <br /> I <br /> w <br /> rI r <br /> 1 <br /> S <br /> Lambert ana 2soociates <br /> CONSULTING GEOTECNNICAL ENGINEERS AND <br /> MATERIAL TESTING <br />