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I <br />I <br />I <br />I <br />I <br />BASIS FOR WETLAND DETERMINATION <br />Three mandatory technical criteria are necessary to classify an area as a jurisdictional <br />wetland according to the 1987 Manual: hydrophytic vegetation, hydric soils, and wetland <br />hydrology. <br />Wetland Vegetation <br />Vegetation criteria are met when more than 50% of the dominant species from all strata <br />are hydrophytes at a sampling point (1987 Manual). Reed (1988) defined hydrophytic plants <br />as those with obligate wetland (OBL), facultative wetland (FACW), and/or facultative (FAC) <br />wetland indicator status. A plant's indicator status is defined by Reed (1988) as follows: <br />Obligate Wetland (OBL) plants occur in wetlands with an estimated probability <br />>99% under natural conditions. <br />Facultative Wetland (FACW) plants occur in wetlands with an estimated probability <br />between 67% -99%. <br />Facultative (FAC) plants occur in wetlands with an estimated probability between <br />34%-66%. <br />Facultative Upland (F ACU) plants occur in wetlands with an estimated probability <br />between 1 % -33%. <br />Obligate Upland (UPL) plants occur in wetlands of the north-central region with an <br />estimated probability of <1 % under natural conditions. A species is not on the <br />National List if it does not occur in wetlands in any region. <br />Hydric Soils <br />Hydric soils exhibit anaerobic indications either immediately below the A-horizon or <br />within 10" of the surface, whichever is shallower (1987 Manual). Indicators of anaerobic <br />conditions include gleying, mottling, and the accumulation of organic matter ( dark colors). <br />The 1987 Manual specifies other hydric soil indicators. <br />Svoboda Ecological Resources <br />Project No.: 98-060-03 2 <br />Van Eeckhout Parcel <br />Mr. Charles Van Eeckhout