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tended towards mineral soils with low to moderate organic matter with only one wet data point in <br /> the northwest site area qualifying as histic. <br /> NRCS soil mapping differentiates two soil units at the site (Figure 3), Green River(map symbol <br /> Be) silty clay loam and Bebeevar and Green River soils and Riverwash (Ro) derived from <br /> alluvium parent material via weathered sandstone and shale (MRCS 2020). Both alluvial soil <br /> map units occur in a floodplain setting and are assigned a non-hydric soil rating. <br /> Hydric soils occur in the littoral zone of the main lake and connected west channel in the north <br /> site area and in the interior of the south saline wetland. Hydric soils described at these locations <br /> typically show low chroma of/3 or less along with saturated conditions associated with shallow <br /> groundwater or tension saturated due to a high matric potential within the capillary zone. <br /> Redoximorphic oxidation structures along root channels in the soils logged near the saline <br /> wetland are indicative of soil wetting and drying cycles associated with fluctuating water table <br /> and variable duration in pond permanency. <br /> Table 3. Soil Ty es within the Survey Area <br /> NRCS Map Unit Texture(s)of Soil <br /> Symbol and Profile Top 24 Description Hydric <br /> Name inches Rating <br /> 0-10" Silty clay Found on flood-plain steps at an <br /> Be loam elevation range between 4,430 to <br /> Green River silty 10-52"Fine sandy 4,820 feet. Parent material consists Non-hydric <br /> clay loam, loam of clayey alluvium over coarse- <br /> 0 to 2 %slopes 52-60" Very cobbly loamy alluvium derived from <br /> sand sandstone and shale <br /> Ro 0-14"Loam Found on flood plains at an <br /> Bebeear and 14-18"Fine sandy elevation range between 4,430 to <br /> loam 4,820 feet. Parent material consists Non-hydric <br /> Green River soils,%slopes <br /> 18-32" Sand of alluvium over sandy and gravelly <br /> and Ri 32-59"Very cobbly alluvium derived from sandstone <br /> 0 to 2 slopeess sand and shale <br /> 4.2. Aquatic Resources <br /> 4.2.1. National Wetland Inventory <br /> The U.S.Fish and Wildlife Service (USFWS)National Wetland Inventory(NWI) (USFWS <br /> 2020) Cowardin classification (Cowardin et. al. 1979) of waters of the U.S., including wetland, <br /> database was queried for wetland occurrence within the survey and immediate surrounding areas <br /> (Table 4,Appendix B,Figure 4). Wetlands inventoried within the survey area include dugout <br /> wetlands classified as an excavated palustrine with unconsolidated bottom in a semi-permanently <br /> flooded water regime (PUBFx). These wetlands include the two identified site wetlands: <br /> Wetland A north main excavated lake and connected west channel and south saline Wetland B. <br /> 23'/o Road Gravel Pit Page 5 of 8 December 2021 <br /> Aquatic Resource Delineation Report WestWater Engineering <br />