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WETLAND DEFINITI�N <br /> According to the 1987 U.S. Army Corps of Engineecs "Wetlands Delineation Manual" (1987 <br /> ti4anual; the document used by all delineators to define wetlands) a wetiand is "Those areas that <br /> are inundated or saturated by surface or ground water at a frequency and ducation sufficient to <br /> suppotrt, and that under normal circumstances do support, a prevalence of vegetatian typica(ly , <br /> adapted for life in saturated soil conditions." The Minnesota State Wetland Conseivation Act ' <br /> Rules, Chapter 8420, fiirther clarifies that "...�vetlands must: (i} 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 support a prevalence of hydropt�ytic vegetation typically adapted for life in saturated <br /> soil conditions; and (3) under normal circumstances, support a prevalence of hydrophytic '', <br /> vegetation." The 1987 U.S. Army Corps of Engineers Manual in Part II, item 24. states that, I <br /> "1'he intef•action of hydrology, vegetation, and soil results in the development of chac•acteristics <br /> unique to wetSands. Therefore, the following technical guidelines for wetlands are based on tlie <br /> three parameters, and diagnostic environmental characteristics used in applying the technical <br /> guideline are re�resented by various indicators of these parameters." It is tllis premise by �vhich <br /> SER ecologists has, in their professional judgment, delineated the �vetlands on the subject parcel � <br /> described in this report. � <br /> I <br /> Wetlaiid Hydrology <br /> The most important wetland criterion is hydrology. The presence and persistence of water ! <br /> influences the vegetation types and changes soil morphology. Hydrology m�y be observed as <br /> standing water(inundation), or may be observed as freestanding�vater within the soil pit or auger <br /> hole (saturation) usually within the upper 12 inches. Tl�is is what woutd be considered pcimary , <br /> hydrology indicators. Only one pE•imary indicator is necessary to make the determination that <br /> wetland hydrology indeed esists. The 1987 Corps Manual also has a range of hydrologic zones <br /> established based on period of iziundation or saturation. These zones and the periods of <br /> inundation or saturation for each can be observed in Table l below. <br /> Excer ted fi-om the 1987 Manua}, Hvdrolo ic Zones—Nontida(Areas <br /> Zone Nante Durakion Comments �Vetiaud or i�ot <br /> 1 Permanently[nimdated l00% �nundation>6.6 ft.i�iean Not(Aquatic Habitat Zone,or Deep�Vater <br /> water de th Habitat} <br /> Semipermanently To�3early ��� Inundation defined as <br /> [1 Permanently Inundared Or �IOQa/o 5b.6 feet mean�vater Wetland ; <br /> Saturated de th i <br /> l[t RegEflarly fnundated Or �25-75% 4Vetiand ' <br /> Saturated <br /> �V Seasonally Inundated Or <12.5- �Vetland <br /> Saturated 25% <br /> N(any areas having these j <br /> �, Erregularly Inulidated or >5-12.5% hydrologic characteristics �Vedand(ifhydrophytic veg. a�id hydric <br /> Saturated sails also present ! <br /> are not�vetlands � <br /> Intermittently Or Never o Areas�vith these <br /> v� Inundated Or Sattlrated <5/o hydrologic characteristics Not <br /> are not wetlands <br /> � <br /> A-l <br />