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♦ ERC Aquatic Resource <br /> Pit Project Site <br /> Delineation Report <br /> February 17,2023 <br /> 4.2 AQUATIC RESOURCES <br /> Delineated aquatic resources were classified according to the physical and biological characteristics using <br /> the Classification of Wetlands and Deepwater Habitat of the United States(Cowardin Classification System) <br /> (Cowardin et al. 1979). Within the survey area, wetland habitat types were classified based on field <br /> evaluation and are summarized in Table 1. <br /> Table 1. Summary of Aquatic Resources Delineated Within the Survey Area <br /> Aquatic Classification <br /> Linear <br /> Resource "Cowardin Location (lat/long) Acres Feet Feature Type <br /> Name <br /> A PEM1A 40.2979°N -104.8386°W 0.005 -- Topographical depression <br /> B PEM1A 40.2978°N -104.8384°W 0.007 -- Topographical depression <br /> C PEM1A 40.2973°N -104.8347°W 0.012 -- Topographical depression <br /> D PEM1A 40.2975°N -104.8320°W 0.005 -- Topographical depression <br /> Aquatic Resources Outside of the Survey Area <br /> Riverine (South Platte River).A <br /> TNW that is not within the <br /> E R2S6 40.2975°N -104.8320°W -- -- <br /> surveyarea, but immediately <br /> adjacent. <br /> Total 0.03 <br /> A total of 0.03 acre of aquatic resources were delineated by ERC within the survey area. A description of <br /> aquatic resource habitat types is provided below.The South Platte River,a known TNW, is located adjacent <br /> and outside of the survey area to the east.The South Platte River was mapped due to its close proximity <br /> to the survey area. The Aquatic Resource Delineation Maps are provided in Appendix A. Wetland <br /> Determination data sheets are provided in Appendix B. Refer to Table 3 for a list of plant species identified <br /> within the survey area (Lichvar et al. 2016). <br /> AQUATIC RESOURCE A(0.005 ACRES) <br /> Aquatic Resources A is a topographical depression within the southwestern corner of the survey area.The <br /> depression contains a PEM1A wetland habitat. Hydrology within the topographical depression appears to <br /> be supported by surface water run-off as well as irrigation run-off from the agricultural field during the <br /> growing season.A direct surface water connection to other Waters of the U.S.was not observed. <br /> The topographical depression was delineated based on the presence of hydrophytic vegetation, hydric <br /> soils and hydrology. <br /> 4 Habitat Type based on Cowardin et al.1979. <br />