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<br />"'A Vegetation within the larger depression (feature ~ located in the north portion of the site <br />has a tremendously varied vegetation community that includes three-squaze, smartweed <br />(Polygonum lapathifolium), tole (Scirpus acutus), Baltic rush (Juncos halfrcus), wild <br />licorice (Glycyrrhiza lepidota), plantain {Plantago major), cattail (Typha latifolia), <br />meadow foxtail, coyote willow (Salix exigna), and peach-leaved willow (Salix <br />amygdaloides). <br />The cattail marsh wetland (feature G) consists of a monoculture of cattails (Typha <br />latifolla). <br />Two surface Swale drainages (features H and n are located east of the cattail marsh <br />wetland and aze dominated by a mixed herbaceous wetland vegetation community. The <br />vegetation community includes reed cavarygrass, medow foxtail, and curly dock <br />Hydrology <br />A The most significant hydrologic feature adjacent to and within the site is the surface water <br />_ drainage that skirts the west boundary of the site and flows across the northwest corner of <br />the site. The surface water drainage originates south of the extension site and flows north <br />of the site into the South PLrtte River.- A cattail marsh wetland is located within the <br />southwest comer of the site. The cattail mazsh wetland is an arm of the surface water <br />drainage that skirts the west boundary of the site. <br />-~ Soils <br />® Sorts within the area of merest are representative of then genesis and topographic <br />"~ position. The Natural Resource Conservation Service (USDA, 1980) identified two soil <br />map units within the project site. The soil units presern are aquolls' and aquems and <br />Bankazd sandy loam. <br />Aquoll and aquent soils are the dominant soil type on the NCC Pit #1 extension site. <br />These sod types are found on bottom lands and flood plains of all the major streams in the <br />azea. They aze deep, poorly drained soils that have formed in recent alluvium. Aquolls <br />(60% of the unit) have a dark colored surface layer. Aquents (35% of the unit) have a <br />light colored surface layer. In both the surface layer is loam or clay. In places they have a <br />gleyed layer in the underlying material. These soils are underlain by sand or sand and <br />gravel within 48 inches. Aquoll and aquent soils are de&rted by the U.S. Army Corps of <br />Engineers (USAGE, 198TJ as hydric. <br />. Bankazd sandy loam is found in small inclusions on the site within the northwest comer <br />and along the southern boundary of the site. 13ankard soils develop in flood plains of <br />stratified recent alluvium along streams and rivers. They aze deep, somewhat excessively <br />drained soils. Commonly these soils have a brown sandy loam surface layer about four <br />inches thick which i_g underlain by brown calcareous sand with lenses of sandy loam, loam, <br />,, <br />NCC Pit ~t Eittension Jurisdictional Wetland Ddiaeation and Determination Page 3 <br />rot <br />