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J. H. KLEINFELDER & ASSOCIATES File No. S-2599-1 <br /> March 3, 1983 <br /> P age 3 <br /> approximately 18 feet. The approximate locations of the pits are shown on the site <br /> map, Plate I. <br /> The backhoe used for this work was provided by the client. The backhoe was <br /> equipped with an extended hoe, so that an 18-foot-depth could be obtained. All <br /> excavations were made under the direction of an engineer from our office who <br /> maintained a continuous log of the soils encountered. <br /> SOIL CONDITIONS <br /> Three of the four backhoe pits encountered a silty fine sand to the maximum <br /> depth explored of 18 feet. Intermittent strata of debris were encountered at various <br /> locations. Usually, the debris was minimal in the surface 10 feet and would increase <br /> with depths below the 10-foot level. The debris normally consisted of concrete, <br /> asphalt, some wood, glass, and metal. We estimate that the three backhoe pits <br /> revealed by volume a maximum of 10 percent debris. Backhoe Pit No. 2, placed near <br /> the center of Lot No. 1, revealed a very high organic content from the surface to the <br /> maximum depth explored of approximately 18 feet. This area is relatively low in <br /> elevation, and the material was near saturated to the maximum depth excavated. <br /> Except for the material found in Pit No. 2, very little organic material was <br /> encountered in the pits. Moisture content for materials for Pits 1, 3, and 4, did not <br /> exceed being relatively damp. <br /> The information derived from these backhoe pits was supplemented with the work <br /> prepared by The Foundation Engineers' November 1982 report. <br /> In general, except for the area represented by Pit No. 2, the materials <br /> encountered are only moderatly compressible. The soils and debris were probably not <br /> compacted when placed, but have developed moderate density through the years by <br /> dessication from many wetting and drying cycles. The organic material over this <br /> approximate 30-year period are for the most part decomposed. An exception to this is <br />