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18 <br /> • No BTEX or TPH as gas, diesel or oil were detected in ground water in the <br /> three borings 131, B2 and 133. <br /> Western Portion of Parcel/West of Former Ship Building <br /> • TPH as motor oil is present at designated concentrations to a depth of at least 5 <br /> feet. TPH as gas and diesel were not detected. <br /> • No benzene, toluene or ethylbenzene were detected in soil. Xylene was present <br /> in the 5 foot sample from 134 at a concentration near the analytical detection <br /> limit. <br /> • Elevated total metal concentrations (lead, copper, and zinc) were present at each <br /> of the three sampling depths (1.5, 3 and 5 feet) in boring 134. Metal <br /> concentrations are generally increasing with depth. <br /> • The total lead concentration at 134 equals the TTLC. The soluble lead <br /> concentration determined from the standard waste extraction test (citric acid) <br /> exceeds the STLC; however, the deionized WET resulted in a very low soluble <br /> lead concentration (0.016 mg/1). <br /> • The 134 soil sample, which was analyzed for total and soluble threshold limit <br /> concentrations for selected metals, has a slightly alkaline pH. <br /> • The standard WET procedure (citric acid extraction) conducted for copper, zinc <br /> and mercury resulted in soluble metal concentrations well below STLC values for <br /> those constituents. <br /> © LU <br /> HDORFF & SCALMANINI <br /> CO N 5 LJL i INC; F N G I NF F RS <br />