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Soil Characterization <br /> Soils have been characterized from previous soil investigations <br /> performed at the former underground tank site In the area of the <br /> tanks, the site is underlain by low permeability silts and clays with <br /> discontinuous layers of clayey sand to a depth of approximately 26 feet <br /> below grade These silts and clays are underlain by clean to silty <br /> sands estimated to have a moderate to high permeability <br /> Table 1-2 <br /> Results of Soil and Groundwater Analyses <br /> by ERM-West, Manch .1991 <br /> Boring(B) #/ TPH-Diesel Benzene Toluene Ethylbenzene Xylenes <br /> Well (MW) # <br /> Soil B-16 1,300 mg/kg <0 5 µg/kg <0 5 µg/kg <0 5 µg(kg 380 µg/kg <br /> Water B-16 (HP-1) 150 mg/l NC NC NC NC <br /> MW-1 0 37 mg/l <0 3µg/1 <0 3gg/l <0 34g/1 <0 3µg/1 <br /> MW-2 0 33 mg/l <0 3gg/l <0 3gg/l <0 34g/l <0 34g11 <br /> MW-3 0 15 mg/l <0 3µg/1 <0 3µg/l <0 3µg/1 <0 3µg// <br /> MW-4 0 14 mg/l <0 3µg/l I <0 3µg/l I <0 3gg/1 <0 3µg/l <br /> NC - Not collected due to lack of water in the sampler <br /> 3-5 <br />