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Classic Custom Homes Holland Fields May 7,2009 Town of Windsor,Dane County, WI Page 2 NRC Project#009-0053-01 technical approach defined in the USACE 1987 Manual. According to procedures described in the 1987 Manual,areas that under normal circumstances reflect a predominance of hydrophytic vegetation, hydric soils,and wetland hydrology(e.g., inundated or saturated soils)are considered wetlands. RESULTS Site Description The Property is comprised of old field vegetation and wetlands. The Property slopes to the southwest from topographic highs of approximately 916 feet msl at Circle Tram Way to topographic lows at the upper wetland margin of 908 feet msl. The Property is bordered by Circle Tram Way and residential development to the east; stormwater detention basins and additional residential development to the north and south;and a large wetland complex to the west. The Wisconsin Wetland Inventory(WWI)map identifies one wetland area along the western fringe of the Property that extends west beyond the Property limits(Figure 3). The field delineated wetland boundary was generally consisted with the mapped wetland,although the field determined boundary extended slightly east of the mapped boundary(Figure 4). Wetland Description Wetland 1 (W-1) is a wet meadow community with shrub-carr components that lies adjacent to the western Property boundary and extends west beyond the Property limits. W-1 lies directly adjacent to an unnamed tributary to the Yahara River. The tributary is a relatively permanent waterway(RPW)located at the northern and western edges of W-1 and is identified on the 24k hydro layer mapped by USGS (Figure 1). Vegetation Dominant plant species within the wet meadow wetland consist of near monocultures of reed canary grass (Phalaris arundinacea)intermixed with Kentucky blue grass(Poa pratensis)and Canada goldenrod (Solidago canadensis)near the margin. The shrub-carr component is dominated by sandbar willow(Salix exigua), red-osier dogwood(Corn us racemosa),and grey dogwood(C. stolonifera). The dominant species within the wetland are comprised mostly of hydrophytic vegetation(OBL,FACW,and/or FAC) and meet the hydrophytic vegetation criterion. Hydrology The wetland appears to have a seasonally saturated hydroperiod near the margin and possibly experiences seasonal inundation in central portions of the wetland. Saturation within the upper 12 inches was observed as a primary indicator of wetland hydrology. Secondary indicators of wetland hydrology included local soil survey data and a positive FAC-neutral test. Therefore,the wetland hydrology criterion was met. Soils Soils within the wetland are mapped by the NRCS as Virgil silt loam within the Property and transitions to Sable silty clay loam westward,beyond the Property limits(Figure 2). The Virgil series consists of very deep,somewhat poorly drained soils on outwash plains, stream terraces, or till plains. The Sable series consists of very deep,poorly drained,moderately permeable soils formed in loess on nearly level broad summits of moraines and stream terraces. The Sable series is identified as a hydric soil unit on the Regulatory and Scientific Expertise — Wetlands, Soils, Ecology, Restoration