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TABLE 1 <br /> CONTAMINANT CONCENTRATIONS OF CONCERN IN AREAS A, C & J <br /> PCB PCB Cd Sb Pb <br /> Area Dimensions Contents Phase Units (1254) (1260) <br /> A Sump 4'x1.7'x2.5' 75 gallons Sludge mg/kg 100 52 -- -- 50 <br /> of sludge, Oil mg/kg 370 340 -- -- 50 <br /> oil, and water Water mg/l 370 340 -- -- - <br /> C Pit 50'x1 1'x5 25 gallons of Floor Scrapings mg/kg 8.5 --- 11 230 94 <br /> Sump 1.5'x1.5'x1.5' oily liquid in Sediment 1 mg/kg --- 8.3 -- -- 110 <br /> 15 Concrete pillars sump, and wooden Sediment 2 mg/kg --- --- -- -- 0 <br /> 4.5'xl'xV planks in the 540 <br /> maintenance pit <br /> J Sump 10'x4'x8.3' 900 gallons of oil Oil mg/kg --- --- - - 110 <br /> Notes: <br /> Source of Data-Site 5 investigation of soil and ground-water contamination at the Naval Communication Station, Rough and Ready Island,Stockton,California, <br /> Vol. I (ERM-West, August 1989). <br /> The TTLC and STLC values for contaminants of concern are: <br /> TTLC STLC 10 x STLC <br /> Contaminant mg/kg mg/1 mg/I <br /> Cd 100 1 10 <br /> Pb 1000 5 50 <br /> PCB 50 5 50 <br /> Sb 500 15 150 <br /> LEGEND: Cd = Cadmium; Pb = Lead; PCB = Polychlorinated Biphenyl; Sb = Antimony <br />