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2018 Biological Resources Inventory Report <br /> areas with undisturbed shortgrass prairie were observed during the field survey. Elevation contours are <br /> shown in Figure 3 to illustrate the vegetation in relation to existing topography. <br /> Table 7 lists each cover type, the dominant species present in each cover type, and the approximate <br /> height of the vegetation for each cover type. <br /> Table 7: <br /> Cover Type and Percent of Project area <br /> Total Percent of <br /> Acreage in Study Dominant Spades Present <br /> Cover Type Shady Area Area (Approximate Height of Species in Cover Type) <br /> Forested Riparian floodplain 10.1 2.5 Plains cottonwood,peach-leaf willow,coyote willow(10-50 feet tall) <br /> Mowed grassland 2.9 0.5 Poa sp.(3-6 inches tall) <br /> Fallow corn field 30.3 12 Maize sp.(6-12 inches tall) <br /> Invasive annual grassland 105.5 42 Slender wheatgrass,annual wheatgrass,smooth brome,downy brome, <br /> crested wheatgrass(6-36 inches tall) <br /> Invasive annuallbiannual 92.2 36 Kochia,field bindweed,curly dock,Iambs quarters(648 inches tall) <br /> forbland <br /> Riparian/herbaceous wetland 12.1 5 Narrowleaf cattail,broadleaf cattail,hardstem bulrush(3-8 feet tall) <br /> Developed 4.9 2 N/A <br /> 2.2.2.5 Relationship of Present Vegetation Types to Soil Types <br /> Soil types from the NRCS database (NRCS 2017) are shown in Figure 4. Table 8 describes the <br /> vegetation for each soil type denoted on the attached map. <br /> Table 8: <br /> Relationship Between Vegetation T pas and Soils Types <br /> Acreage Percent of <br /> In Project cover in <br /> NRCS SoN Type area Project area Cover" <br /> Loamy alluvial land,gravelly substratum 7.6 2.9 Fallow Corn Field <br /> 4.6 1.8 Forested Riparian Floodplain <br /> 71.0 27.5 Invasive Annual I Biannual Forbland <br /> 51.7 20.0 Invasive Annual Grassland <br /> 0.1 0.1 Mowed Grassland <br /> 3.0 1.2 Riparian/Herbaceous Wetland <br /> Loamy alluvial land,moderately wet 16.7 6.5 Fallow Corn Field <br /> 17.0 6.6 Invasive Annual I Biannual Forbland <br /> 39.8 15.4 Invasive Annual Grassland <br /> 2.3 0.9 Mowed Grassland <br /> 1.6 0.6 Riparian/Herbaceous Wetland <br /> Sandy alluvial land 6.0 2.3 Fallow Corn Field <br /> 4.2 1.6 Forested Riparian Floodplain <br /> 3.9 1.5 Invasive Annual/Biannual Forbland <br /> Tucson South Sand and Gravel Mine-Brighton,Colorado 17 <br />