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M98168GE • • <br />APPENDIX A <br />The field study was performed on September 1 and September 2, <br />1998. The field study consisted of logging and sampling the soils <br />encountered in five (5) auger advanced test borings. The <br />approximate locations of the test borings are shown on Figure 2. <br />The log of the soils encountered in the test borings are presented <br />on Figures A2 through A7. <br />The teat borings were logged by Lambert and Associates and <br />samples of significant soil types were obtained. The samples were <br />obtained from the teat 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 ccunta are presented on the logs of the test <br />borings such as 200/5 where 200 blows with the hammer were required <br />to drive the saml,ler 5 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 />teat boring log is intended to be that which moat 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 teat 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 (MLI. 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 loge are intended to <br />present our interpretation of the subsurface conditions encountered <br />in the teat borings. The stratification lines represent the <br />approximate boundary between soil types and the transition may be <br />gradual. <br />Al <br />~Lam6ert ana ~,o~otiate~ <br />COMWlT1Y0 OEOT[CMMIC~I EMOIYEEq YIO <br />Y1ITEIII~I T[ETIYO <br />