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SITE CHARACTERISTICS <br />Topography and Geomorphic Features <br />The average elevation of the site is 4990 feet and the proposed development site lies on <br />the primary alluvial terrace above the South Platte River. The site slopes very gently to <br />the west toward the river. <br />Hydrology <br />Irrigated agricultural fields are located east of the proposed development site on the <br />secondary terrace above the South Platte River. Tailwater from irrigation flows <br />downgradient ultimately leaving the fields and flowing onto the primary terrace creating <br />a band of wet meadow vegetation on the Reinoehl and Arends parcels. <br />Vegetation <br />The vegetation communities investigated during the survey include a meadow vegetation <br />community on the Reinoehl parcel and a wet meadow vegetation community and <br />vegetation along the irrigation tailwater ditch on the Arends parcel. <br />The meadow vegetation community located in the southwest corner of the Reinoehl <br />property is dominated by wheatgrass (Agropyron sp.) with small inclusions of cattail <br />(Typha latifolia), coyote willow (Salix exigua), spike rush (Eleocharis palustris), and <br />blowoutgrass (Redfreldia flexuosa). Plant species surrounding this wet area consist of <br />predominantly upland ruderal species. <br />The wet meadow vegetation community on the Arends site includes meadow foxtail <br />(Hordeum jubatum), spike rush, and smartweed (Polygonum lapathifolium). Ruderal <br />vegetation in the wet meadow includes prickly lettuce (Lactuca serriola), bindweed <br />(Convolvulus arvensis), lambsquarters (Chenopodium album), plantain (Plantago major), <br />Canada thistle (Cirsium arvense), and red clover (Trifolium pratense). The vegetation <br />community along the waters edge of the ditch include meadow foxtail, spike rush, <br />knotweed (Polygonum ramosissimum), inland saltgrass (Distichlis spicata), three-square <br />(Scirpus americanus). <br />Figures 3 and 4 illustrate typical vegetation on the Reinoehl and Arends sites. <br />Soils <br />According to the Soil Survey of Adams County, Colorado (1974), three different soil <br />map units are located on the site. The map units are in bands trending southwest to <br />northeast that parallel the South Platte River channel. The soil units include Nunn loam <br />(0 to 1% slopes and 1 to 3% slopes), Dacono loam (0 to 1% slopes), and terrace <br />escarpments. <br />Ready Mixed Concrete Company's Arende, Reinoehi, &Archuleta Site Page 2 <br />Ute Ladies'-tresses Orchid Survey (2007)