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A summary of analytical laboratory data for all of the soil borings drilled at the site are
<br /> presented in Table 2 below Laboratory data sheets and chain of custody documents for
<br /> ' this investigation are included in Appendix A
<br /> TABLE 2
<br /> Analytical Laboratory Data for Soil Samples
<br /> ' Sample Analyte
<br /> Location- Benzene Toluene Ethyl Benzene Xylene TPH Gasoline
<br /> Depth µg/Kg }tg/Kg µg/kg gg/Kg mg/Kg
<br /> SBI-l2'-14' 30,000 62,000 54,000 220,000 4,200
<br /> SBI-14'-16' 1,400 750 900 1,700 120
<br /> SB2-12'-14' 17,000 48,000 29,000 130,000 2,000
<br /> SB3-10'-12' 12,000 43,000 42,000 180,000 2,300
<br /> SB3-12'-14' 20,000 64,000 40,000 170,000 2,700
<br /> SB3-14'-16' 55,000 69,000 44,000 180,000 4,100
<br /> SB8-12'-14' 2,500 20,000 24,000 96,000 2,300
<br /> SB8-16'-18' <5 0 14 11 42 <1
<br /> SB9-12'-14' 23 11 90 150 19
<br /> ' SB9-16'-18' 500 <5 0 7,900 24,000 720
<br /> SB10-12'-14' 2,300 19,000 32,000 160,000 2,100
<br /> SBI1-12'-14' <5 0 <5 0 190 420 120
<br /> SB12-10'-12' 2,500 8,100 19,000 95,000 1,300
<br /> SB13-10'-12' 290 980 4,200 21,000 390
<br /> '! SB14-10'-12' <25 <25 170 160 290
<br /> MW4-12'-14' <5 0 <5 0 <5 0 <5 0 <1
<br /> ' MW5-10'-12' <5 0 <5 0 <5 0 <5 0 <1
<br /> MW5-12'-14' <5 0 <5 0 <5 0 <5 0 <1
<br /> MW6-10'-12' <5 0 <5 0 <5 0 <5 0 <1
<br /> MW6-12'-14' <5 0 <5 0 35 <5 0 <1
<br /> MW7-10' <5 0 <5 0 <5 0 <5 0 <1 0
<br /> MW8-10' <5 0 <5 0 <5 0 <5 0 <1 0
<br /> MW9-10' <5 0 110 2100 2900 500
<br /> NOTE <= Less than detectable concentration
<br /> ' Analytical laboratory data indicate that gasoline and gasoline constituents are below the
<br /> detection limits in monitoring well MW-7 and MW-8 samples The soil sample collected
<br /> ' from MW-9 indicated significant levels of gasoline (500 mg/Kg), toluene (1 I0 µg/Kg),
<br /> ' ethyl benzene (2100 µg/Kg) and xylene (2900 µg/Kg) Benzene was not found above the
<br /> detection limit in this sample
<br /> Soil PID readings on Remcor boring logs reveal that gasoline contamination of soil is
<br /> spatially related to the water table elevation Examination of the data also show high
<br /> levels of soil contamination at levels as deep as 16 feet However, the depths to the water
<br /> American Geological Services,Inc
<br /> CA95DE-029
<br /> I1
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