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M99238GE <br />• <br />APPENDIX A <br />'"he field study was performed on November 3, 1999. The field <br />study consisted cf logging and sampling the soils encountered in <br />four (4) test borings. The approximate locations of the test <br />borings are shown on Figure 2. The log of the soils encountered in <br />the test borings are presented on Figures A2 through A5. <br />The test borings were logged by Lambert and Associates and <br />samples of significant soil types were obtained. The samples were <br />obtained from the test borings using a Modified California Barrel <br />sampler and bulk disturbed samples were obtained. Penetration blow <br />counts were determined using a 140 pound hammer free falling 30 <br />inches. The blow counts are presented on the logs of the test <br />borings such as 27/4 where 27 blows with the hammer were required <br />to drive the sampler 4 inches. <br />The engineering field description and major soil classification <br />are based on our interpretation of the materials encountered and <br />are prepared according to the Unified Soil Classification System, <br />ASTM D2488. The description and classification which appear on the <br />test boring log is intended to be that which most accurately <br />describes a given interval of the test boring (frequently an <br />interval of several feet). Occasionally discrepancies occur in the <br />Unified Soil Classification System nomenclature between an interval <br />of the soil log and a particular sample in the interval. For <br />example, an interval on the test boring log may be identified as a <br />silty sand (SM) while one sample taken within the interval may have <br />individually been identified as a sandy silt (ML). This <br />discrepancy is frequently allowed to remain to emphasize the <br />occurrence of local textural variations in the interval. <br />The stratification lines presented on the logs are intended to <br />present our interpretation of the subsurface conditions encountered <br />in the test borings. The stratification Iines represent the <br />approximate boundary between soil types and the transition may be <br />gradual. <br />Al <br /> <br />~Lamberr anD associates <br />~GNSULTiNG GEGTEGN NiGI EN GiN EERS eNG <br />M•'E RILL TESTING <br />