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360 North Arm Lane <br /> Orono, Minnesota <br /> Wetland Delineation Report <br /> I. INTRODUCTION <br /> The 360 North Arm Lane site was examined on August 24, 2012 for the presence and extent of <br /> wetland. The 3.9-acre site was located in Section 6, Township 117N, Range 23W, City of <br /> Orono, Hennepin County, Minnesota(Figure 1). <br /> The site consisted of a single-family home surrounded by mowed lawn and landscape plantings, <br /> and two wetlands (Figure 2). Topography on the site sloped downhill from west to <br /> east/southeast,towards Lake Minnetonka. <br /> II. METHODS <br /> Wetlands were identified using Routine Determination methodology described in the Corps of <br /> Engineers Wetlands Delineation Manual(Waterways Experiment Station, 1987)and Regional <br /> Supplement to the Corps of Engineers Wetland Delineation Manual: Midwest as required by <br /> Section 404 of the Clean Water Act and the Minnesota Wetland Conservation Act. <br /> Wetland boundaries were identified as the upper-most extent of wetlands, which met criteria for <br /> hydric soils,hydrophytic vegetation, and wetland hydrology. Wetland-upland boundaries were <br /> marked with pink pin flags and located by Gronberg Associates. <br /> Soils,vegetation, and hydrology were documented at representative locations along the wetland- <br /> upland boundary. Plant species dominance was estimated based on the percent aerial or basal <br /> coverage visually estimated within a 30-foot radius for trees and vines, 15-foot radius for the <br /> shrub layer, and a 5-foot radius for the herbaceous layer within the community type being <br /> sampled. <br /> Soils were characterized to a minimum depth of 18-20 inches(unless otherwise noted)utilizing <br /> Munsell Soil Color Charts and standard soil texturing methodology. Hydric soil indicators used <br /> in reporting are from the NTCHS Field Indicators of Hydric Soils in the United States (USDA <br /> Natural Resources Conservation Service Version 7, 2010)which are commonly found in the <br /> Midwest. <br /> Plants were identified using standard regional plant keys. Taxonomy was based on the Manual <br /> of Vascular Plants of Northeastern United States and Adjacent Canada, Ed. 2 (New York <br /> Botanical Garden, 1991). Indicator status of plant species was taken from the 2012 National <br /> Wetland Plant List (Lichvar, R.W. and Kartesz, J.T. 2009.North American Digital Flora: <br /> 2 <br />