4719 BELVEDERE AVE 2016-01-01 MF Import

Soils Criteria and Mapped Description The WashinQton State Wetlands Identification and Delineation Manual, 1997 edition, defines hyd��ic soils as those that formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions in the upper part. Field indicators are used for determining whether a given soil meets the definition and criteria for hydric soils. The soils underlyin� this site are mapped in the Soil Survev of Snohomish Countv Area Washinqton. 1983 edition as Alderwood•Everett gravelly sandy loams, 25 to 70 percent slopes. Alderwood soils are described as moderately deep and moderately well drained. The average annual precipitation is 40 inches. Permeability of the Alderwood soil is moderately rapid above the hardpan and very slow thrc��gh it. Included in this soil unit are Ragnar, Indianola, McKenna, and Norma soils, antl 'erric Medisaprists. McKenna and Norma soils and 7erric Medisaprists are listed on the Snohomish County hydric soils list. Hydrology Criteria The WashinQton State Wetlands Identification and Delineation Manual, 1997 edition, states that "areas which are seasonally inundated and/or saturated to the surface for a c�•,secutive number of days greater than or equal to 12.5% of the growing season ar� •• !lands, provided the soil and vegetation parameters are met. Areas inundated or saturated between 5 and 12.5% of the growing season in most years may or may not be wetlands. Areas saturated to the surface for less than 5% of the growing season are non-wetlands." Field indicators are used for determining whether wetland hydrology parameters are met. BOUNDARY DEfERMINATION FINDINGS Wetland VeQetation: Red alder (Alnus rubrn, Fac) and Western red cedar (Thuja p(icvta, Fac) dominate the overstory of the wetland. The understory is dominated by a thick stand of salmonberry (Rubus spectabilis, Fac+►, ladyfern (Athyrium jtlix•(eminv, Fac), and false lily-of-the-valley (Maianthemum dilntatum, Fac). The dominance of species rated Facultative and wetter meets the utteria for hydrophytic vegetation. Soils: The soils within the wetland were moist at the surface at the time of inspection. Sampled soils were found to be black (10YR 2/1), and silt loam in texture. The wetland area, as mappea, appears to satisfy the criteria for hydric soils. Hydrology: Soils sampled in the wetland were moist with dark chromas, inferring the presence of water at or near the surface for at least 12.5% of the growing season. This satisfies wetland hydrology criteria. Kiny Residence 4 WRI N06290 Critiral Area Study Rev. p2: April 13, 2007 �I It,