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4 <br /> each boring were collected from a depth of.5S l�ct and composited into three soil samples <br /> fvi a:.c:j5is y a,--a �Li <br /> (shiildiaAg ja7d, weld-mg and i1i►u7a shops, and the open west ►ioi, <br /> pCi <br /> of the parcel, Figure 3). Additionally, soil samples from the water-table interface and water <br /> samples were collected from the two monitoring wells The soil and water samples were <br /> analyzed for priority pollutant metals and volatile organics (EPA Method 8240). <br /> The results of that initial investigation (WaterWork, January 1990) indicated slightly <br /> elevated cor^entrations of total 1^ad and mercury, neither of which exceeded their <br /> respective TTLCs, in the composite soil sample from the former ship-building yard area <br /> (Figure 3). Concentrations just above detection limits of toluene and total xylenes were also <br /> present in this soil sample. Concentrations of the remaining priority pollutant metals in the <br /> soil samples were generally within the average range of metal concentrations in soil, and no <br /> volatile organics were detected in any of the other soil samples. In the water samples, <br /> concentrations of cadmium, chromium (III), lead, and selenium exceeded or equaled their <br /> respective MCLS, aed a small amount of acetone in well MW-1 (suspected lal2bratory <br /> contaminant) was the only volatile organic detected in either well. Lr <br /> A second phase of investigation was conduct�-1 in March 1992 to verify and assess the extent <br /> and source of impacts on the soil and groun3 water and determine site-specific hydrologic <br /> conditions. Seven additional soil borings were drilled and subsequently completed as <br /> shallow monitoring wells (MW-3 through MW-9), which were located in the northern <br /> portion of the property (Figure 2). Discrete soil samples were collected at the 5.5-foot <br /> depth during drilling, water samples were collected from each monitoring well, and all soil <br /> and water samples were again analyzed for priority pollutant metals and volatile organics <br /> (EPA Method 8240). <br /> The results of the second phase of investigation (RESNA, May 1992) indicated -elevated <br /> levels of total lead (still below the TTLC) in several soil samples from the former ship- <br /> building }ard and the welding and fitting shop area (Figure 2). However, the soluble lead <br /> concentrations from these samples were well below the STLC for lead. The concentrations <br />