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E7OiIBIT J - VEGETATION INFORMATION <br />• There are three distinct vegetative units immediately <br />surrounding the affected area of LP-21: an open sagebrush <br />park, a strip of sparsely vegetated pinyon-juniper and <br />rockland combination. (For a more detailed location, see <br />"Exhibit C".) <br />The big sagebrush (Artemesia tridentate) - sand dropseed <br />(Sporobolus cryptandress) association, on a gently undulating <br />1-3'96 slope, correlates closely with a reddish-brown loamy <br />soil. Other lesser species found in this association are: <br />fourwing saltbush (Atriplex canescens), big rabbitbrush <br />(Chrysotamnus nauseosus), snakeweed, blue grams (Bouteloua <br />gracilis), galleta grass (Hilaria jamesii), Indian ricegrass <br />(Oryzopsis hymenoides), pricklypear (Opuntia spp), Russian <br />• thistle (Salsola kali), scarlet falsemallow, western wheatgrass <br />(Agropyron smithii), and sunflower (Helianthus_.spp). Vegetative <br />cover for this big sagebrush-sand dropseed association averages <br />15 percent. Dominant vegetation averages two to three feet <br />in height. <br /> <br />Between the steep south=facing slope and the sagebrush <br />park lies a strip of pinyon-juniper whose vegetive cover <br />approximates six percent. Moving from the park area towards <br />the hillside and portal area, the soils trend is to grade <br />into a clay loam Prom a loam. The average height of the <br />dominant vegetation ranges from 10 to 20 feet. <br />The pinyon-juniper association thins out up the south- <br />facing slope as soil contains more clay and thins out, and <br />• water infiltration decreases. Vegetative cover is less than <br />5%, with an abundance of rockland present. <br />