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1 <br /> 1, M <br /> Subsurface Investigation December 12, 1990 <br /> Former Unocal Station No. 2859, Stockton, California AGS 38012-5 <br /> TABLE 1 <br /> CONCENTRATIONS OF HYDROCARBONS IN SOIL SAMPLES <br /> COLLECTED FROM BORINGS K1/B1 THROUGH K6/B6 <br /> J.H. Kleinfelder and Associates <br /> January 29, 1988 <br /> Former Unocal Service Station No. 2859 <br /> 1665 Pacific Avenue <br /> Stockton, California <br /> January 1988 <br /> Boring Depth Ethyl- Total <br /> Number (Feet) TPH Benzene Toluene benzene Xylenes <br /> KB1 25 1/2 15.8 <0.05 0.274 <0. 01 <0.05 <br /> KB1 30 1/2 7.8 <0.05 0.082 <0. 01 <0.05 <br /> KB2 25 1/2 8.7 0.103 0.112 <0.01 0.212 <br /> KB2 30 1/2 8. 6 <0.05 0.163 <0. 01 <0. 05 <br /> KB3 15 1/2 8.8 0.045 0. 178 <0.01 0. 136 <br /> KB3 20 1/2 239.0 11.2 18.0 18.2 - 41.9 <br /> KB4 15 1/2 8.5 <0. 05 0.133 <0.01 <0. 05 <br /> KB4 21 1/2 24.8 0. 129 0.328 0.537 2.0 <br /> KB5 15 1/2 32_2 <0.05 1.71 <0. 01 0.674 <br /> KB5 20 1/2 370. 0 6.58 38. 6 40.1 53.15 <br /> Results in ,parts per million (ppm) <br /> TPH = Total petroleum hydrocarbons <br /> < = Below detection limits by method of analysis used <br /> used <br /> K5/B5 <br /> Borings drilled by Kleinfelder <br /> z <br /> 3 <br /> Applied GeOSysten7S <br />