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M02106GE <br />APPENDIX A <br />The field study was performed on September 3 through September <br />17, 2003. The field study consisted of logging and sampling the <br />soils encountered in fourteen (14) auger advanced test borings. <br />The approximate locations of the test borings are shown on Figure <br />2. The log of the soils encountered in the test borings are <br />presented on Figures A2 through A24. <br />The test borings were logged by Lambert and Associates and <br />samples of significant soil types were obtained. The samples <br />were obtained from the test borings using a Modified California <br />Barrel'sampler and bulk disturbed samples were obtained. <br />Penetration blow counts were determined using a 140 pound hammer <br />free falling 30 inches. The blow counts are presented on the <br />logs of the test borings such as 23/6 where 23 blows with the <br />hammer were required to drive the sampler 6 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 <br />the 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 <br />the Unified Soil Classification System nomenclature between an <br />interval o£ the soil log and a particular sample in the interval. <br />For example, an interval on the test boring log may be identified <br />as a silty sand (SM) while one sample taken within the interval <br />may have 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 <br />encountered in the test borings. The stratification lines <br />represent the approximate boundary between soil types and the <br />transition may be gradual. <br />Al <br />~Lam6ert anD ~,o,~ociates <br />CONSULTING GEOTECNNICAL ENGINEERS ANO <br />MATERIAL TESTING <br />