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CURRENT CONDITIONS <br /> Vadose zone <br /> • Vadose zone appears locally impacted by TPH as diesel only at two depths: <br /> 15,000 mg/Kg at approximately 15 feet depth, adjacent to the former UST excavation, and, <br /> 1,200 mg/Kg mg/Kgat approximately 65 feet depth, immediately below the former UST excavation. <br /> • No presence of TPH as gasoline or chlorinated solvents. <br /> • Only trace levels of benzene, toluene, ethylbenzene and xylenes (BTEX). <br /> Saturated zone <br /> • Average groundwater depth: 63.4 feet in November 1995 <br /> • Approximate groundwater flow direction: North-west 1 <br /> • Approximate groundwater gradient: 0.02 ft/ft <br /> • TPH as diesel only detected at low levels (0.2 mg1L maximum). These concentrations historically occur during seasonal rises <br /> in the water table. <br /> • Inconsistent trace levels of BTEX sporadically measured in groundwater. <br /> MZ/I 1-09-951VDBF/95-0040.LF <br />