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KLEINFELDER <br /> File No. 20-3978-01.W10 <br /> July 26, 1997 <br /> 4.17 Geotechnical Services (File No. 20-3978-01.G01) <br /> Based on the results of the subsurface assessment conducted in this area, Kleinfelder had the <br /> following recommendations detailed in our report"Limited Geotechnical Services, (Phase I ESA <br /> Recommendation No. 23), Former Spreckels Sugar Plant No. 2, 18800 South Spreckels Road, <br /> Manteca, California"dated February 24, 1997: <br /> 1. A surface and subsurface slab exists in the factory building area. The subsurface slab exists <br /> at a depth of approximately 4 to 8 feet below grade. The two slabs are connected by concrete <br /> piers or columns. The remainder of the area between the two slabs was filled with nearby <br /> soils. It is Kleinfelder's recommendation that both slabs and the fill between the slabs be <br /> entirely removed prior to development. <br /> 2. Organic soil in the composting area should either be removed and either hauled off site prior <br /> to construction, used in landscape areas or stabilized with lime pond material. Clay soil in <br /> the vicinity of Boring G-20 should be considered expansive. <br /> 3. Some of the organic soil in the feed lot/tare dirt area are highly organic and not suitable for <br /> use as an Engineered Fill or for supporting permanent structures. Some of the soil is so <br /> organic that it can not even be stabilized with lime pond material. Therefore, the organic soil <br /> should be completely removed from any building or pavement area. Perched water was <br /> noted to exist in this area, and may hamper grading operations during wet weather seasons. <br /> 20-3978-01.WIO/2017L I SS Page 32 of 50 Copyright 1997,Kleinfelder,Inc. <br />