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' PHASE II 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 vicinity of the Subject Property are primarily of the Quaternary lower member of the <br /> iModesto Riverbank Formation (Source Geologic Map of the Sacramento Quadrangle, California, 198 1) <br /> Groundwater Hydrogeology <br /> The groundwater level in the vicinity 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 /> 1 Water Conservation District, Lines 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 /> 1 During the current Phase II investigation, groundwater was encountered at a depths of 26 5 to 28 5 feet bgs Due to <br /> the limited 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 /> i <br /> 1 <br /> i <br /> i <br /> 1 <br /> 1 <br /> i <br /> 1 <br /> 1 3 <br />