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l APPENDIX A �_ <br />� <br />FIELD EXPLORATION <br />Our explorations were performed on August 24. 1999. The subsurface conditions at the site <br />were explored by drilling ten borings to a maximum depth of thirteen (13) feet below the <br />existing ground surface. The Borings were drilled by Associated Drilling. <br />The approximate boring locations were determined by pacing from existing on site landmarks. <br />The locations of the borings uhould be considered accurate only to the degree implied by the <br />method used. These aporoximate locations are shown on the Boring Location Plan, Plate 2. <br />The field exploration was continuously rt:onitored by a engineer from our firm who classified <br />the soils encountered, maintained a log of each boring, obtained representative samples, <br />measured groundwater levels, and observed pertinent site features. Samples were visually <br />classified in accordance with the Unified Soil Classification System which is presented on <br />Plate A1, Legend. Representative soil samples were placed in closed containers and returned <br />to our laboratory for further examination and testing. <br />Logs of the borings are presented on Plates A2 through A11. The final logs repressnt our <br />interpretations of the field logs and the results of the laboratory examination and tests of tield <br />samples. The stratif�cation lines on the logs represent the approximate boundaries between <br />soil types. In actuality, the transitions may be more gradual. <br />The borings were drilled using hollow stem augers. In each boring, Standard Penetration <br />Tests (SPT! were perfnrmed at selected intervals in general accordance with ASTM Test <br />Designatien D-1586. The split spoon samples were driven with a one hundred forty (1401 <br />pound hammer freely falling thirty (30) inches. The number of blows required to dri•de the last <br />twelve (12) inches of penetration are called the "N-value". This value helps to characterize <br />the site soils and is used in our engineering analyses. <br />Eerth Conecltanro, Inc. <br />