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l' USTCOG(:89-19 <br /> Ms. Jane Cochrane <br /> Page 2 <br /> General. Subsurface Soil Conditions <br /> Soil Profile <br /> The soils encountered are primarily lean clays (CL) to the depths <br /> explored. A detailed description of the soil profile is presented <br /> in Appendix A. In general, the soils encountered below the topsoil <br /> to a depth of 3 to 5 feet were slightly silty, brown to orange brown <br /> lean clays. Between 7 and 10 feet below existing grade the soil is <br /> b brown to orange, clayey, soft and wet to saturated. <br /> Groundwater <br /> Groundwater was encountered in all_ of the test )):Lts at approximately <br /> 7 to -Zi-feet below the surface. <br /> Laboratory Testing <br /> w; Classification <br /> Soils were visually classified according to the Unified Soil Classifica- <br /> tion System. The laboratory testing program is designed to review <br /> classifications made in the field. Identification tests performed on the <br /> soils included grain size analyses and determinations of the percentages <br /> of material passing the No. 200 sieve. Percent materials passing the <br /> No. 200 sieve was determined as a routine part of each sieve analysis and <br /> Lon additional. selected samples as an aid in soil classification. Percent <br /> material passing the No. 200 sieve is presented on the 'fest Pit Togs. <br /> Soil Moisture Content <br /> Obtained from the test pits the field moisture contents were determined <br /> for selected disturbed soil samples. <br /> The field moisture content was determined as a percentage of: the dry <br /> f weight. Results of these tests are shown on the test pits logs. <br /> I <br /> I <br /> tI <br /> 1.. <br />