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' • <br /> ' <br /> WETLAND DEFINITION <br /> ' According to the 1987 U.S. Army Corps of Engineers "Wetlands Delineation Manual" (1987 <br /> Manual; the document used by all delineators to define wetlands) a wetland is "Those areas that <br /> ' are inundated or saturated by surface or ground water at a frequency and duration sufficient to <br /> support, and that under normal circumstances do support, a prevalence of vegetation typically <br /> adapted for life in saturated soil conditions." The Minnesota State Wetland Conservation Act <br /> ' Rules, Chapter 8420, further clari�es that "...wetlands must: (1) have a predominance of hydric <br /> soils; (2) be inundated or saturated by surface water or groundwater at a frequency and duration <br /> sufficient to suppoR a prevalence of hydrophytic vegetation typically adapted for life in saturated <br /> ' soil conditions; and (3) under normal circumstances, suppoR a prevalence of hydrophytic <br /> vegetation." The 1987 U.S. Army Corps of Engineers Manual in Part II, item 24. states that, <br /> ' "The interaction of hydrology, vegetation, and soil results in the development of characteristics <br /> unique to wetlands. Therefore, the following technical guidelines for wetlands are based on the <br /> three parameters, and diagnostic environmental characteristic's used in applying the technical <br /> ' guideline are represented by various indicators of these parameters." It is this premise by which <br /> SER staff has, in their professional judgment, delineated the wetlands on the subject parcel <br /> described in this repoR. <br /> ' Wetland H drolo <br /> Y g3' <br /> The most important wetland criterion is hydrology. The presence and persistence of water <br /> ' influences the vegetation types and changes soil morphology. Hydrology may be observed as <br /> standing water(inundation), or may be observed as freestanding water within the soil pit or auger <br /> ' hole (saturation) usually within the up�r 12 inches. This is what would be considered primary <br /> hydrology indicators. Only one primary indicator is necessary to make the determination that <br /> wetland hydrology mdeed exists. The 1987 Corps Manual also has a range of hydrologic zones <br /> ' established based on period of inundation or saturation. These zones and the periods of <br /> inundation or saturation for each can be observed in Table 1 below. <br /> � Exce ted from the 1987 Manual,H drolo ic Zones—Nontidal Areas <br /> Zone Name Duration Comments Wedand or Not <br /> I Permanendy Inundated 100°Io Inundadon>6.6 ft.mean Not(Aquatic Habitat Zone,or Deep Water <br /> water de th Habitat) <br /> , Semipermanently To Nearly �75_ Inundation defined as <br /> II Permanendy Inundated Or �1�� 56.6 feet mean water Wetland <br /> Saturated de th <br /> ' III Regulazly Inundated Or �25-7596 Wetland <br /> Saturated <br /> IV Seasonally Inundated Or <12.5- Wetland <br /> Saturated 25%a <br /> ' Many areas having these <br /> Inegulazly Inundated or Wetland(if hydrophytic veg.and hydric <br /> V >5-12.5% hydrologic characteristics <br /> Saturated �not wedands soils also present <br /> ' Internvttently Or Never �eas with these <br /> VI Inundated Or Saturated ��0 hydrologic characteristics I�Iot <br /> are not wetlands <br /> ' <br /> Svoboda Ecological Resources 6 2180 Abingdon Way <br /> , Project No.2007-056-03 Orono,Minnesota <br />