Wetland Classification, Identification, Delineation-2014

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Council 1995). The intent of this supplement is to bring the Corps Manual up to date with current knowledge and practice in the region and not to change wetland boundaries." "...This Regional Supplement is designed for use with the current version of the Corps Manual (Environmental Laboratory 1987) and all subsequent versions. Where differences in the two documents occur, this Regional Supplement takes precedence over the Corps Manual for applications in the Midwest Region." National Wetland Inventory (NWI) maps (Figure 2a) Hennepin County Wetland Inventory (HCWI) maps (Figure 2b), 2014 DNR NWI Update maps (Figure 2c), Web Soil Survey of Hennepin County map (Figure 3), Minnesota Public Waters Inventory maps (Figure 4), and 2012 aerial photographs were reviewed prior to the site visit to identify areas that may be wetlands. Areas illustrating evidence of wetland conditions were examined in greater detail during the field survey. Vegetation, soils and hydrology were examined (as outlined in the 1987 Manual) and used to characterize wetland types and determine wetland boundaries. Sample transects were established in representative wetland-to-upland transition zones in order to characterize the vegetation, soils, and hydrology of the site. Transects consist of a representative upland sample point and representative wetland sample point. Information obtained at the sample points can be found on the field data sheets located in the Technical Documents section. Wetland boundaries were marked at the site by pink "Wetland Delineation" pin flags. The wetland boundary is considered to be the topographically highest extent of the wetland basin; areas below the staked boundary met the three required wetland criteria while areas above were lacking in one or more of these criteria. Wetlands were classified in accordance with methods described by Cowardin et al. (1979) and used in the NWI (e.g. PEMB, PSS1C, etc.), completed by the U.S. Fish and Wildlife Service. The Circular 39 and Eggers and Reed classification systems are also given. The indicator status of plants, as described in the Technical Documents section, was determined using the National Wetland Plant List (Lichvar, et al. 2014. l�ttp://rvetla�rd pla»ts.u.cncc.arrnV.Ntil�. RESULTS The National Wetland Inventory indicates the presence of one large wetland complex along the northern and eastern edge of the survey area. The wetland is categorized by the NWI as PFO/EMCd (Figure 2a). The HCWI indicates probable and potential wetlands in the same location(Figure 2b). The DNR NWI update in 2014 indicates generally similar wetland types but generally does not map the wetlands on the 200 Stubbs Bay Road parcel (Figure 2c). The Web Soil Survey of Hennepin County (Figure 3) identifies six soil map units within the study area. They are Lester loam, Muskego, Blue Earth, and Houghton, ponded, Cordova loam, Hamel-Glencoe, Angus loam, and LeSueur loam. The Muskego, Blue Earth and Houghton complex is considered hydric, the Cordova and the Hamel-Glencoe soils are predominantly hydric and the Lester loam, Angus loam and LeSueur loam are considered predominantly non- hydric. Soil series descriptions are provided in the Technical Documents section. The Minnesota Department of Natural Resources, State Protected Waters Map (Public Water Inventory) indicates no public waters or wetlands within the study area (Figure 4). Svoboda Ecological Resources 300&350 Stubbs Bay Road Project Number: 2014-037-03 2 Orono