Wetland investigation report-2013

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Anderson Engineering of MN, LLC. E3ren Homes-Wetland Investigation#13499 April 30,2013 Backqround As requested by Thomas Bren Homes Inc., Anderson Engineering of MN, LLC completed a wetland delineation on the residential property located at 475 Oxford Road, Orono, Minnesota. Geographically the site is located in Section 5, Township 117 North, Range 23 West. The wetland delineation was completed in accordance with the 1987 United States Army Corps of Engineers Wetland Delineation manual and the published regional supplement to the Army Corps Wetland Delineation manual, Midwest Region. The purpose of this study was to investigate the project area, identify areas meeting the technical criteria for wetlands, delineate the jurisdictional extent of the wetland basins and classify the wetland habitat. Fieldwork for this site investigation was completed by Environmental Scientist Marc Cottingham and Environmental Associate Kristina Justen on April 29, 2013. Weather conditions were partly sunny and 70 degrees Fahrenheit. Methodoloqv United States Geologic Service 7.5" Topographic Quadrangle maps, United States Fish and Wildlife Service National Wetland Inventory maps, United States Department of Agriculture Natural Resources Conservation Service Soil Survey of Hennepin County, Minnesota. Department of Natural Resources Public Water Inventory and available aerial photographs were consulted to initially locate potential wetland habitats. The hydric soil assessment procedure of the Routine On-site Determination Method was used during this investigation. In this method, the following procedures were used: 1) The vegetative community was sampled in all present strata to determine whether greater than 50% of the dominant plant species present were hydrophytic. 2) Soil pits were dug using a Dutch auger to depths of 16"-36", noting soil profile and any hydric soil characteristics. 3) Signs of wetland hydrology were noted and were compared to field criteria such as depth to shallow water table and depth of soil saturation found in the soil pits. At least one sample point transect crosses the delineated wetland edge. This transect consist of an upland sample point and a wetland sample point. Other sample points may be located in areas which have one or more of the wetland vegetation, soils, or hydrologic characteristics present, where questionable conditions exist, or to verify the absence of wetland criteria. Sample points were marked in the field with orange pin flags. The identified wetland boundary was marked with sequentially numbered pink flags. All sample points and the delineated wetland boundary were located utilizing a Trimble Geo XH sub-meter GPS unit. 4 q E