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it <br /> SIERRA <br /> EXPLANATION FOR SES BORING LOGS <br /> GRAVEL CLAY <br /> 0 0 0 0 <br /> o.o.o.o Sandy GRAVEL Sandy CLAY <br /> Silty GRAVEL Silty CLAY/Clayey SILT <br /> o_oo:o- <br /> o_o_e_o- Clayey GRAVEL ++++ Organics <br /> ,_,_°_°_ ++++ <br /> SAND Hard Rock <br /> L <br /> Silty SAND/Sandy SILT l'l'l'l' Slough <br /> .l.l.l.l. <br /> ----I Clayey SAND Asphalt <br /> r771-2-21 <br /> •a•s <br /> SILTConcrete <br /> •a•s•a-a <br /> ................. - - - - • Contact between sedimentary or <br /> K = Field estimation of soil lithologic units; dotted where <br /> hydraulic conductivity approximate, dashed where <br /> uncertain <br /> Drive sample interval Initial water level <br /> 4 measured during <br /> Drive sample collected drilling (date in italics) <br /> ' for possible chemical <br /> analysis Static water level, <br /> measured after well <br /> Note: Soils are logged using ASM D2487 development (date in italics) <br /> Sod Classification System <br />