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TABLE 1 CONCENTRATIONS OF PETROLEUM HYDROCARBONS (MG/KG) <br /> IN THE SOILS AT FORMER CHEVRON SS 9-1918, 45 E. HARDING <br /> WAY STOCKTON, CALIFORNIA <br /> Total <br /> Well Depth Ethyl- Petroleum <br /> No. Date (feet) Benzene Toluene Benzene Xylenes Hydrocarbons <br /> Concentration in Soils (mg/kg) (ppm) <br /> MWl 11/07/88 36 <0.0005 0.0035 <0.0005 <0.0005 <0.050 <br /> MW2 11/08/88 21 <0.0005 0.0009 <0.0005 0.0007 0.290 <br /> MW2 11/08/88 26 <0.0005 0.0014 0.0005 <0.0005 <0.050 <br /> MW2 11/08/88 31 <0.0005 0.0023 <0.0005 <0.0005 <0.050 <br /> MW2 11/08/88 36 <0.0005 0.0039 <0.0005 <0.0005 <0.050 <br /> MW2 11/08/88 41 <0.0005 <0.0005 <0.0005 <0.0005 <0.050 <br /> MW3 11/08/88 26 0.0010 0.0049 0.0005 0.0009 <0.050 <br /> MW3 11/08/88 31 0.088 0.033 0.087 0.190 0.590 <br /> MW3 11/08/88 36 0.0035 0.0081 0.0034 0.0064 0.072 <br /> MW3 11/08/88 40 0.0080 0.0016 0.0091 0.0060 0.170 <br /> MW4 11/09/88 21 0.029 1.300 0.710 0.380 64 <br /> MW4 11/09/88 26 0.310 5.900 0.990 4.900 65 <br /> MW4 11/09/88 31 9.600 210.000 58.000 240.000 3,300 <br /> MW4 11/09/88 36 0.0035 0.0081 0.0034 0.0064 0.072 <br /> MW4 11/09/88 41 0.0012 0.019 0.0035 0.015 0.220 <br /> MW5 11/10/88 20 <0.0005 0.0016 <0.0005 <0.0005 <0.050 <br /> MW5 11/10/88 30 0.0027 0.0017 <0.0005 0.0007 0.050 <br /> MW5 11/10/88 35 <0.0005 <0.0005 <0.0005 <0.0005 <0.050 <br /> MW6 11/10/88 20 <0.0005 0.0011 <0.0005 0.0016 0.068 <br /> MW6 11/10/88 25 0.0031 0.0051 0.0084 0.160 1.200 <br /> MW6 11/10/88 40 <0.0005 0.0014 <0.0005 <0.0005 <0.050 <br /> 4 <br />