Wetland Delineation report-2013 - Laserfiche WebLink

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r Introduction On May 2"d, 2013 Arrowhead Environmental Consulting (AEC) performed a wetland delineation at the 3245 Watertown Road property located in Orono, MN. The legal 1 description of the project location is: A part of the NE 1/a of Section 5, T117N, R23W, Hennepin County, Orono, Minnesota. The parcel is a total of 0.61 acres (according to the Hennepin County Website). Methods ' AEC utilized the 1987 US Army Corps of Engineers Wetlands Delineation Manual and Midwest Regional Supplement to perform the wetland delineation. A United States Geological Survey (USGS) Map (Excelsior Quad) (Figure 1), the Minnesota Department rof Natural Resources (MN DNR) Public Water Inventory (PWI) Map (Figure 2), the Hennepin County Soil Survey Map (Figure 3), the National Wetland Inventory (NWI) Map (Figure 4), and the MCWD Wetland Assessment Map (Figure 5) were reviewed prior to the site visit and used in the delineation process. The delineated wetland boundaries (GPS located) are indicated on Figure 6 and are overlaid on a 2012 aerial image. AEC used the routine delineation method. Wetland classification followed methods described by the USACOE - St. Paul District; ' Eggers and Reed "Wetland Plants and Plant Communities of MN and WI". The Circular 39 and Cowardin et al. classifications are given as well. The indicator status of plants was determined using the State of Minnesota — 2012 National Wetlands Plant List Final Ratings provided by the U.S. Army Corps of Engineers, Cold Regions Research and Engineering Laboratory. Pink pinflags were used to delineate the wetlands and were numbered sequentially; flagging was hung from adjacent vegetation to aid in location of the pinflags. Sample points were taken to document the vegetation, soils, and hydrology indicators within ' representative upland and wetland locations. Results Office Results Wetland 1 is not indicated on the NWI map. Wetland 1 is mapped in the Lester soil ' series; the Lester soil series is classified as a non-hydric soil (SCS Hydric Soils of the United States). Wetland 1 is indicated on the Minnesota Department of Natural Resources Public Water Inventory Map (PWI) as a creek/stream. Wetland 1 is indicated 1 on the MCWD Wetland Assessment Map; however, it is not assigned a management classification. ' Field Results Wetland 1 AEC classified Wetland 1 as a Seasonally Flooded Basin (Type 1, PEMA) wetland. ' Wetland 1 is dominated by reed canary grass (Phalaris arundinacea), stinging nettle (Urtica dioica), and Virginia waterleaf (Hydrophyllum virginianum). The adjacent r1