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~~ ~ BULL SEEP -CAMAS WETLAND DELMEATION REPORT <br />SITE DESCRIPTION <br />The Cooley Gravel Site is located in Adams County, Colorado straddling the South Platte River. <br />The site occupies portions of three sections, 16,17,and 9 of Township 2 South, Range 67 West. <br />The section comers meet at approximately 39° 53' 15"Latitude and 104° 53'50" Longitude, <br />r UTM (s083som.E. "114soom.N.). <br />METHODOLOGY <br />~ Field investigations were conducted to delineate existing wetlands in the project azea. A routine <br />survey was done in accordance with guidelines developed by the Department of the Army, Corps <br />of Engineers in the 1987 publication titled: Corps of Engineers Wetlands Delineation Manua] <br />- (Department of the Army, 1987). <br />The presence and composition of hydrophytic vegetation was determined in the field. Soils were <br />- examined for hydric characteristics using soil core sampling methods. The presence of <br />hydrologic chazacteristics supporting existing wetlands was made by visual observation. <br />'~ WETLAND COMMUNITY DESCRIPTIONS <br />Wetlands in this survey have bee divided into five areas for the purpose of discussion (Drawing <br />- ]). Areas adjacent to the South Platte River were excluded from this survey because no potential <br />disturbance has been proposed for these azeas. <br />Area 1 <br />This site is located at the end of 100`" avenue neaz the Fulton Ditch headgate station. A hill with <br />a northwest aspect slopes to a fenced pasture, which is relatively level before dropping into the <br />Spring Creek Ditch. Most of this flat pasture area is a wet meadow dominated by three square <br />(Shoenoplectus americanus). Hydric grasses are mixed with water sedge (Carex aquatilus) and <br />field sedge (C. microptera) in this azea but heavy grazing made complete identification <br />impractical. The soil has a saturated surface layer high in organic content. White mineral <br />r deposits have accumulated on the soil surface and vegetation, caused by evaporation of shallow <br />surface pools. A thick layer of clay slows percolation of surface water into the saturated gravel <br />layer below. It is this gravel layer that conveys ground water to the seeps that emerge from the <br />slope as the pasture drops into the ditch. The seeps are vegetated mainly with cattail (Typha <br />latifolia), open azeas of muck soil are dominated by water cress (Nasturtium off~cinale). <br />Ditches on both sides of 100`s avenue have hydric vegetation and drain into Spring Creek Ditch, <br />which then empties into Fulton ditch north of the road. A shallow open water pond just south of <br />' the road and east of the pasture area connects to the ditch network. <br /> <br /> <br />Sections 16, 17, and 9 of Township 2 South, Range 67 West. / <br />39° 53' 15" Latitude and 104° 53'50" Longitude, UTM ('0830ia'E. °° 14800i''N.). <br />13 <br />