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APPENDIX A E-5813 Our field exploration was performed on June 26, 1992. Subsurface conditions at the site were explored by excavating five test pits to a maximum depth of twelve fat below the existing grade. The test pits were excavated by Sons Creels using a rubber -tired backhoe. During test pit exploration, the consistency of the soil was primarily estimated based on the effort required to excavate the soil and the stability of the trench walls. Approximate test pit locations were determined by 'pacing' from property comers and existing buildings. Approximate test pit elevations were determined by interpolation from topograptic contours as provided by the client. The locations and elevations of the test pits should be considend accurate only to the degree implied by the method used. These approximate locations are shown on Ile Test Pit Location and Site Plan, Plate 2. The field exploration was continuously monitored by an individual from our firm who cl"fied the soils encountered and maintained a log of each tut pit, obtained representative samples, measured groundwater levels, and observed pertinent site features. All samples were visually classified in accordance with the Unified Soil Classification System which is presented or Plate Al, Legend. Logs of the test pits are presented in the Alrpendix on Plates A2 throatthmatDIA The lineal logs represent our interpretations of the field logs and the retults of the laboratory tests on frele samples. The stratification lines on the logs represent the approximate boundaries between ` soil types. In actuality, the transitions may be more gradual. Representative soil samples were placed in closed containers and returned to our laboratory for further examination and testing. Earth ConSuIrAnls. Inc.