Laserfiche WebLink
approximately 80 feet to the northeast of the former tank location <br /> (OW-5) . <br /> 5. It is estimated that, with the possible exception of a very small rr P p ry 1 volume <br /> of soil immediately adjacent to the former tank location, no soils have <br /> TPH concentrations at or above 1000 ppm. <br /> 6. TPH were detected in groundwater samples collected during this <br /> investigation, approximately 10 feet to the north-northeast (OW-2; <br /> 14,000 ppb) , 65 feet to the north-northeast (OW-6; 11 ppb) and 40 feet <br /> to the south (OW-3; 59 ppb) of the former tank location. <br /> 7. BTEX were detected during this investigation in soil samples collected <br /> approximately 10 feet to the north-northeast (OW-2) of the former tank <br /> location (benzene, up to 16 ppm; toluene, up to 17 ppm; ethylbenzene, up <br /> to 45 ppm; xylenes, up to 83 ppm) , at depths near the encountered water <br /> Lie table. <br /> 8. Ethylene dibromide, 1,2-dichloroethane and polynuclear aromatic <br /> hydrocarbons were not detected in any groundwater samples collected <br /> during the November 1986 field investigation or this investigation. <br /> 9. Total lead appeared in all soil samples in concentrations ranging from <br /> Lnondetectable to 11 ppm. Total lead (0.05 ppm) was found in the water <br /> sample collected from OW-5 near the detection limit. All lead <br /> concentrations found in soil samples are within a range typical of <br /> natural conditions. There appears to be no correlation between the <br /> distributions of lead and hydrocarbons at the Tracy service center. <br /> t <br /> t <br /> 3286a/BAV100 30 <br />