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-8- <br /> With the exception of test pits TP-101, -108, -109 and -110, light to <br /> heavy seepage was noted in the explorations. It is our opinion that the <br /> seepage was due to perched water, and not a static groundwater table. <br /> Considering that little or no excavation is planned, seepage is not ex- <br /> pected to affect construction, except for installation of the stormwater t <br /> detention pipe. <br /> Kasch Park, South End <br /> At the south end of Kasch Park (vicinity of the proposed softball <br /> fields) , subsurface soils typically consisted of a sequence of duff or <br /> topsoil and rootmat over weathered till over unweathered till . In the <br /> majority of our explorations, the duff or topsoil ranged from 0.7 to 1.5 <br /> feet thick, with an average thickness of 1.0 feet. An exception to this <br /> was at TP-202, located just south of the existing ball fields, where 5 <br /> feet of soft or loose, wet organic topsoil fill was encountered overly- <br /> ing slightly weathered till . (Another exception was at TP-201, located <br /> at the existing fill stockpile, where at least 10 feet of fill was <br /> noted. ) The duff, topsoil , and topsoil fill are not considered suitable <br /> to be used as fill , nor to remain in place in areas to receive new fill . <br /> The underlying soils can remain in place, but may require compaction if <br /> they are loose or become disturbed. <br /> In all but one of the south-end test pits, light to moderate seepage was <br /> noted. It is our opinion that seepage reflected perched pockets of <br /> water, rather than static groundwater. This water is not expected to <br /> affect the permanent design of the improvements. However, it will <br /> likely affect construction activities, in that cut soils are expected to <br /> be wet of their optimum moisture content for compaction, and will there- <br /> fore need to be dried prior to placement as fill . <br /> Kasch Park, North End <br /> At the north end of Kasch Park (vicinity of the proposed soccer fields) , <br /> subsurface soils typically consisted of a sequence of duff or topsoil <br /> and rootmat over fill over native till in various stages of weathering. , <br />