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Alderwood gravelly sandy loam: is described as a moderately well drained soil on till plains. <br /> It is moderately deep over a hardpan. This soil formed in glacial till. Typically, the surface layer <br /> is very dark grayish brown gravelly sandy loam about 7 inches thick. The upper part of the <br /> subsoil is dark yellowish brown and dark brown very gravelly sandy loam about 23 inches thick. <br /> Included in this unit are small areas of Everett, Indianola, and Kitsap soils on terraces and <br /> uplands. Permeability of this soil is moderately rapid above the hardpan and very slow through it. <br /> Available water capacity is low. Soils sampled on site appear similar to the description for <br /> Alderwood gravelly sandy loam. <br /> 2.2.3 Hydrology Criteria <br /> Wetland hydrology encompasses all hydrologic characteristics of areas that are periodically <br /> inundated or have soils saturated to the surface for a sufficient duration during the growing <br /> season. Areas with evident characteristics of wetland hydrology are those where the presence of <br /> water has an overriding influence on characteristics of vegetation and soils due to anaerobic and <br /> chemically reducing conditions, respectively. <br /> Additionally, areas which are seasonally inundated and/or saturated to the surface for a <br /> consecutive number of days >_12.5 percent of the growing season are wetlands, provided the soil <br /> and vegetation parameters are met. Areas inundated or saturated between 5 and 12.5 percent of <br /> the growing season in most years may or may not be wetlands. Areas saturated to the surface for <br /> less than 5 percent of the growing season are non-wetlands. Field indicators are used for <br /> determining whether wetland hydrology parameters are met. <br /> Mundorf-8th St 7 Critical Area Study & <br /> WRI#16233 Mitigation Plan <br /> March 2 0/6 <br />