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PHASE H ENVIRONMENTAL SOIL SAMPLING <br /> AT&T MICROWAVE RELAY FACILITY <br /> 90 WEST TURNER ROAD,SACRAMENTO,CALIFORNIA <br /> CONFIDENTIAL AND PRIVILEGED <br /> floor Surface sediments in the vlcuuty of the Subject Property are primarily of the Quaternary lower member of the <br />' Modesto Riverbank Formation (Source Geologic Map of the Sacramento Quadrangle, Callfornla, 198 1) <br /> Groundwater Hydrogeology <br /> The groundwater level In the vicuuty of the Subject Property Is reported to occur at approximately 35 feet bgs <br /> Regional groundwater flow Is depicted as flowing to the northwest (Source San Joaquin County Flood Control and <br />' Water Conservation District, Lutes of Equal Depth To Water In Wells, Spring 1992) A complete hydrogeologic <br /> Investigation would be necessary to determine groundwater flow direction at the Subject Property <br /> During the current Phase II Investigation, groundwater was encountered at a depths of 26 5 to 28 5 feet bgs Due to <br /> the luruted scope of work, ATC was unable to confirm the groundwater gradient at the site However, based on <br /> laboratory analytical results, diesel fuel appears to have migrated to the south and east of the UST source <br /> 1 <br /> 1 ' <br /> 1 <br /> 3 <br />