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1-5:Aurora Donald Interchange(Exit 278) <br /> Interchange Area Management Plan for Marion County Approval <br /> ODOT KN19062 <br /> Oregon Department of Transportation—Region 2 <br /> Roadside ditches are present along much of Ehlen Road and Bents Road in all quadrants of the study area (see <br /> Photos 1 through 6 in Appendix E). One stormwater pond apparently associated with the Travel Centers of <br /> America fueling station is present within the northwest quadrant (see Photo 7 in Appendix E). A pond of <br /> unknown origin, apparently associated with Westside Concrete Accessories, is present in the southwest <br /> quadrant (see Photo 8 in Appendix E). <br /> 2.4.3.2 Wetlands <br /> According to the U.S. Fish and Wildlife Service (USFWS) National Wetlands Inventory(2018)7, a freshwater pond <br /> polygon is located near the north-central extent of the study area. Based on recent aerial photos,this location is <br /> now a paved parking area for tractor-trailers (see Figure 2-5). No local wetland inventory has been prepared for <br /> this area. <br /> A subsequent wetland determination was conducted at the site with field investigations in 2019 and 2020. <br /> Scientists walked the entire study area (with the exception of property owned by Aurora Energy due to a lack of <br /> a signed right-of-entry form). Several wetlands and roadside ditches were determined to be present within the <br /> study area,though the wetlands were not classified or delineated. See Appendix F for additional wetland <br /> information. <br /> Approximately 18 percent of the study area is classified as Concord silt loam which is rated as a hydric soil <br /> (NRCS 2019)8(see Figure 2-5).The remaining soils are not classified as hydric. Additional detail is provided in <br /> Appendix F. <br /> USFWS National Wetlands Inventory, <br /> httos://www.fws.gov/wetlands/data/mapoer.html <br /> 8 Natural Resources Conservation Service Web Soil Survey, https://websoilsurvev.sc.egov.usda.Pov/Apo/HomePage.htm <br /> July 2020 1274-3012-031 2-11 <br />