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Wetland Delineation Report—Orono Substation Expansion Project July 2, 2010 Engineer Research and Development Center, 2008). Methods included establishment of sampling transects in a representative transition zone of the identified wetland. Each transect consisted of one sampling point in upland and one point in wetland. Soils, vegetation, and hydrology data were recorded on data forms and are included in Appendix A of this report. Species dominance for vegetation measurements was based on the percent coverage visually estimated within a 30-foot radius of the sample point location for the tree and vine layers, a 15- foot radius for the shrub layer, and a five-foot radius for the herbaceous layer. Wetlands were classified according to Wetlands of the United States (U.S. Fish and Wildlife Service Circular 39; Shaw and Fredine; 1971) and Wetlands and Deepwater Habitats of the United States (FWS/OBS Publication 79/31; Cowardin et. al. 1979) (see the Classification Systems Table in Appendiac B). Common names and scientific names for vegetation identified in this report and on the attached data forms generally correspond with the nomenclature used in the National List of Plant Species that Occur in Wetlands: North Central(Region 3) (USFWS, Reed, 1988). Wetland boundaries were located using a Trimble GeoXT sub-meter accuracy global positioning unit (GPS). Wetland boundary points were then post processed using Trimble Pathfinder Office software to ensure sub-meter accurate GPS coordinates. 4.0 RESULTS 4.1 Mapping NWI mapping(Exhibit 2) depicts one Type 3 (PEMCd) wetland on the northern and eastern portions of the Site and is consistent with the delineated wetland boundary. The NRCS SSURGO for Hennepin County indicates that the soils listed below are mapped within the Site (E�ibit 3). Klossner soils(depressional), Hougton and Muskego soils (depressional), and Hamel-Glencoe(depressional) complex soils are listed as hydric in Hydric Soils of Minnesota, revised December 1995. All others are indicative of uplands. The distribution of hydric soils in NRCS mapping is consistent with the delineated wetland boundary. Soil Map Unit Name Hvdric? Klossner soils, depressional, 0 to 1% slopes (L49A) Yes Houghton and Muskego soils, depressional, 0 to 1% slopes (LSOA) Yes Hamel-Glencoe, depressional, complex, 0 to 3% slopes (L132A) Yes Lerdal loam, 1 to 3% slopes (L35A) No Lester-Kilkenny complex, 6 to 12% slopes, eroded(L41 C2) No Hamel overwash-Hamel complex, 1 to 4% slopes (L36A) No Angus-Kilkenny complex, 2 to 6% slopes (L40B) No Angus loam, morainic, 2 to 5% slopes(L37B) No The MnDNR PWI (Eachibit 4) for Hennepin County depicts the north part of Public Water Wetland (27-916V� covering most of the Site, with a second part off of the Site to the 2