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6307 36TH AVE W 2021-12-16
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6307 36TH AVE W 2021-12-16
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Last modified
12/16/2021 1:53:41 PM
Creation date
8/2/2017 2:27:37 PM
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Address Document
Street Name
36TH AVE W
Street Number
6307
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Medisaprists, McKenna, and Norma soils are listed as hydric on the Hydric Soils List for <br />Washington State. <br />Hydrology Criteria <br />The Washington State Wetlands Identification and Delineation Manual, 1997 edition, states <br />that "areas which are seasonally inundated and/or saturated to the surface for a <br />consecutive number of days greater than or equal to 12.5 percent of the growing season are <br />wetlands, provided the soil and vegetation parameters are met. Areas inundated or <br />saturated between five and 12.5 percent of the growing season in most years may or may <br />not be wetlands. Areas saturated to the surface for less than five percent of the growing <br />season are non -wetlands." Field indicators are used for determining whether wetland <br />hydrology parameters are met. <br />BOUNDARY DETERMINATION FINDINGS <br />Wetland A (Northern Portion) <br />Vegetation: Red alder (Alnus rubra, Fac) and Western red cedar (Thuja plicata, Fac) <br />dominate the overstory of the wetland. The understory is dominated by a thick stand of <br />salmonberry (Rebus spectabilis, Fac+), Himalayan blackberry (Rubus armeniacus, FacU), <br />and trailing blackberry (Rubus ursinus, FacU). <br />The dominance of species rated "Facultative" and wetter meets the criteria for hydrophytic <br />vegetation. <br />Soils: The soils within the wetland were ponded at the surface at the time of inspection. <br />Sampled soils were found to be very dark gray (10YR 3/1) from 0 to 18 inches below the <br />surface, and sandy silt loam in texture. The wetland area, as mapped, appears to satisfy the <br />criteria for hydric soils. <br />Hydrology. Soils sampled in the wetland were moist with dark chromas, inferring the <br />presence of water at or near the surface for at least 12.5 percent of the growing season. <br />This satisfies wetland hydrology criteria. <br />Conclusion: The area that is mapped as wetland meets all three parameters for <br />classification as wetland according to the Washington State Wetlands Identification and <br />Delineation Manual, 1997 edition. <br />Wetland A (Southern Portion) <br />Vegetation: Red alder (Alnus rubra, Fac) and Western red cedar (Thuja plicata, Fac) <br />dominate the overstory of the wetland. The understory is dominated by a thick stand of <br />salmonberry (Rubus spectabilis, Fac+) and stinging nettle (Urtica dioica, Fac+). <br />The dominance of species rated "Facultative" and wetter meets the criteria for hydrophytic <br />vegetation. <br />Soils The soils within the wetland were ponded at the surface at the time of inspection. <br />Sampled soils were found to be dark gray (10YR 3/2) with distinct redoximorphic <br />Critical Area Study and Buffer Mitigation Plan WRI# 09084 <br />Intermec- Lot 2 Revision#2: March 22, 2010 <br />
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