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4 Environmental Analysis <br /> 4.7 Geology, Soils, and Paleontological Resources <br /> In the Project site and gen-tie corridor, the most generic mapping (Jennings et al. 2010) shows <br /> the Tertiary and Cretaceous rock units covered by more recent Quaternary sediment (see Figure <br /> 4.7-1). Table 4.7-1 provides descriptions for all the rock units shown on the map. Of particular <br /> importance are the four rock units that are present at or in the vicinity immediately surrounding <br /> the Project Site (Q, QPc, M, and Ku). Note the first two of these (Q, QPc) are Quaternary age <br /> deposits of unconsolidated or loosely consolidated sediments. The more detailed mapping by <br /> Dibblee (1980) and Wagner et al. (1991) provide a better picture of the underlying bedrock <br /> geology, which can occur at the surface or under a thin (2-to 6-foot) covering of sediment (Figure <br /> 4.7-2). <br /> Griffith Energy Storage Project 4.7-2 Tetra Tech/SCH 2022120675 <br /> Draft Environmental Impact Report August 2023 <br />