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Biological Resources Evaluation Report <br /> Griffith Energy Project <br /> 1.1.2 Ecoregion <br /> The Project site is located within the Great Valley Geomorphic Province, which is a broad,flat, alluvial plain <br /> about 50 miles wide and 400 miles long in the central part of California between the Sierra Nevada in the <br /> east and the Coast Ranges in the west(Jepson Flora Project[eds.] 2021). The Central Valley is composed <br /> of two valleys: 1)the northern and smaller valley, known as the Sacramento Valley,which is drained by the <br /> Sacramento River;and 2)the southern and larger valley, known as the San Joaquin Valley,which is drained <br /> by the San Joaquin River(California Department of Conservation, California Geological Survey 2002). The <br /> Project site is located within the San Joaquin Valley subregion of the Great Valley (Jepson Flora Project <br /> [eds.] 2021). <br /> 1.1.3 Land Use <br /> Based on historical aerial imagery(Google Earth©),the Project site has consisted of herbaceous vegetation <br /> and has been used for grazing since 1985. Two houses were built within the boundary of Project site <br /> between 2002 and 2003. The topography of the Project site appears unchanged throughout this period. <br /> Based on information provided by the landowner, the Project site is annually grazed by cattle. The area of <br /> the Project site within San Joaquin County is designated as agriculture and open space land (San Joaquin <br /> County Community Development Department 2013), and the portion in Alameda County is designated as <br /> an unincorporated, wind-resource area (ICF International 2010). <br /> Tetra Tech, Inc. 1-5 July 2023 <br />