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i life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas." According to USACE, one positive indicator (except in certain situations) ~ from each of three elements must be in order to make a positive wetland _ determination, which are as follows: ^ Greater than 50 percent dominance of hydrophytic plant species; ^ Presence of hydric soil; and ~ ^ The area is either permanently or periodically inundated, or soil is saturated to the surface during the growing season of the dominant vegetation. 4.1 Wetland Delineation Field delineation to determine presence of wetlands in the project area was performed on 12 October 2004 to identify and delineate any areas meeting the wetland criteria in accordance with the Corps of Engineers Wetlands Delineation Manual (U.S. Army Corps of Engineers, 1987). Topographic maps (Figure 5), the National Wetlands Inventory (NWI) map (Figure 6), -, the Minnesota Department of Natural Resources (MNDNR) Protected Waters Inventory (PWI) map (Figure 7), the Soil Survey for Washington and Ramsey Counties (Figure 8), and the hydric soil list for Ramsey County ~l were reviewed prior to the field delineation to locate potential wetland -~ habitat. These sources showed one wetland area along the south side of Lake Owasso, which were investigated in greater detail during the field delineation. These sources failed to indicate the second wetland located on the south side of South Owasso Boulevard. 4.2 Methodology The Routine Onsite Determination Method (RODM} was applied for this delineation. Field notes, samples, and photographs were taken at representative locations in each wetland basin. Collected information was transferred to RODM data sheets, which are included in Appendix B. Wetland plant species nomenclature follows the National List of Plant Species that Occur in Wetlands (U.S. Department of the Interior, 1988). Identification was aided when necessary with field guides for the region. Soils were observed for hydric soil characteristics by using soil pits dug with a the spade. Pits were dug to a depth necessary to confirm hydric soil characteristics, up to a maximum depth of 24 inches. Soil color _ determinations were made using MUNSELL Soil Color Charts (Kollmorgen Instruments Corporation, 1990). Site soil characteristics were compared to those mapped and described in the Soil Survey for Washington and Ramsey Counties. _ Subsurface wetland hydrology indicators were examined using the soil pits as deep as 24 inches to confirm soil saturation. Wetland boundaries were located and .marked with sequentially-numbered, pink pin flags identified with "Wetland Boundary". The wetland edge is considered the highest extent of the wetland basin; areas above the boundary Wetland Permit Application A-ROSEV0501.00 - South Owasso Boulevard Water Quality Improvements Page 13