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07/08/2004 15:13 19703022515 ~ LAMS 8 RT ASSOCIATES <br />PN: D04155GE <br />July 8, 2004 <br />Page 2 <br />Our services will consist of a geotechnical engineering Eeld and laboratory study of the subsoil and <br />slope conditions at the Eureka Gravel Pit sift to provide geottxhnieal engineering assessment, <br />suggestions and rewtrtmendations. Our services to be provided are otrtlined below. <br />- The field study will consists of obsetvittg, describing, and sampling the soil materials <br />encountered in about two (2) [o three (3) test borings along County Road 25 and one (1) to <br />two (2) test borings at the roe of [hc slope. We will perform detailed observations of the <br />slope area as part of the field study. <br />- ideally we would like to obtain subsurface infotme[ion from near the mid-elevation of the <br />eroding area, however we understand that construction of a roadway along the mid<levation <br />of the slope is outside of the mining permitted area. We feel that construction of this access <br />roadway may further de-stabilize the slope area. <br />- We anticipate that San loan County will provide traffic control during advancement of the <br />test borings along County Aoad 25. <br />- We will require a detailed map showing the pre-rrdning topography of the site, if this <br />information is available, and a topographic map of the current slope configuration. <br />- We plan to use our truck mounted continuous flight auger drill rig to advance the test <br />borings. <br />- The soil materials encountered in the test borings will be observed, described and samples <br />will be retrieved f'or the subsequent laboratory study. Based on the data obtained, logs of the <br />test borings will be prepared. <br />- The laboratory study wilt consist of tests to help assess the soli strength potential of the <br />materials sampled where appropriate. <br />We anticipate that the laboratory study will include the following: <br />two (2) direct sheaz tests to measure soil strength design parameters. <br />three (3) Sieve analysis tests, <br />three (3) At[erberg Limits tests, <br />moisture content and dry density tests wi[1 be performed on the sttengt[; and swell- <br />consohdation test samples. ' <br />T1cXTIt~7EYf ?Itt~ ~85IIL'SIIfEB <br />CONSULTING 6EOTECHNICA`/ ENa:NEERS AND <br />MATERIALS TESSIHG <br />