Wetland Classification, Identification, Delineation-2013

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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 2), Web Soil Survey of Hennepin County map (Figure 3), Minnesota Public Waters Inventory maps (Figure 4), and 2010 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. Hydrophytic status of plants was based on the National Wetland Plant List issued on May 15, 2012 and effective June 1, 2012 and as characterized by the plant status on the Excel Midwest Region data sheet provided by the US Army Corps of Engineers, St. Paul District. 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 List of Plant Species That Occur in Wetlands — Region 3 (Sabine 1999). RESULTS The National Wetland Inventory indicates the presence of one wetland within the study area, classified as PEMA(Figure 2). The Web Soil Survey of Hennepin County (Figure 3) identifies four soil map units within the study area. They are as follows: Urban land-Udorthents, Lester loam, Hamel overwash Hamel, and Klossner soils. Klossner soils are considered hydric, Lester loam and Hamel overwash hamel are partially hydric, and Urban land-Udorthents is unknown. Soil series descriptions are provided in the Technical Documents section. Svoboda Ecological Resources 3700 Northern Avenue Project Number: 2012-020 2 Orono MN