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-6- <br /> the southern proposed soccer field area flowing in a southeast direc- <br /> tion. Swampy areas were not noted, but there were occasional areas <br /> where there was ponded water at the ground surface. The site had been <br /> logged, and judging by the small size of the alder trees, had been <br /> graded relatively recently. Portions of the site reportedly were used t <br /> as disposal areas for excess material generated during construction of <br /> the existing softball fields. <br /> SUBSURFACE CONDITIONS <br /> General <br /> Subsurface soils encountered in the explorations at both Hall and Kasch <br /> Parks consisted of natural inorganic and organic soils, and man-made <br /> fills. The major soil types were characterized with the following soil <br /> units: <br /> Forest Duff: Natural organic debris, including leaves, needles, <br /> and decayed wood. <br /> Rootmat: The zone consisting primarily of small roots, such as <br /> from grass or brush. <br /> Topsoil : Silty sand to sandy silt, dark brown, organic. <br /> Highly Weathered Till : Silty sand, red-brown, fine to coarse, <br /> trace to little gravel ; typically loose to medium dense. <br /> Slightly Weathered Till : Silty sand, mottled grAy and brown, fine <br /> to coarse, trace to little gravel ; typically medium dense to <br /> dense. <br /> Unweathered Till : Silty sand, gray, fine to coarse, trace to <br /> little gravel ; typically dense to very dense. <br /> Alluvium: Layered sand and silt, gray and brown; typically medium <br /> dense or stiff. <br /> Fill : Soil placed or graded by man, variably consisting of any of <br /> the above soil units, as well as branches, roots, and man-made <br /> materials such as asphalt. <br />