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u <br /> SIERRA <br /> EXPLANATION FOR SES BORING LOGS <br /> 0000 GRAVEL CLAY <br /> o e o o Sandy GRAVEL Sandy CLAY <br /> o e e e <br /> Silty GRAVEL Silty CLAY/Clayey SILT <br /> o-o-o-o- <br /> Clayey GRAVEL ++++ Organics <br /> SAND :w:�; Hard Rock <br /> rrrr <br /> Silty SAND/Sandy SILT r r r r Slough <br /> rrrr <br /> Clayey SAND <br /> y y ������� Asphalt <br /> SILT Concrete <br /> Cement/Grout <br /> - - - - - ........ Contact between sedimentary or <br /> lithologic units, dotted where <br /> K = Field estimation of soil approximate, dashed where <br /> hydraulic conductivity uncertain, hatched where <br /> gradational <br /> Drive sample interval Initial water level <br /> Q measured during <br /> Drive sample collected drilling (date in italics) <br /> for possible chemical <br /> analysis Static water level, <br /> = measured after well <br /> development (date in italics) <br /> Note Soils are fogged usuig ASTM D2487 <br /> Sod Classification System <br />