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TABLE 1 - SOIL CHEMICAL ANALYTICAL DATA Chevron Station #9-3232 8660 Lower Sacramento Road Stockton, California Sample Ethyl- Total Sample Date Depth TPHg Benzene Toluene benzene Xylenes MTBE ID Collected (feet) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) Boriva MW -1 MW -1-10.5 10/29/98 10.5 < 1.00 <0.00500 <0.00500 <0.00500 < 0.00500 < 0.0500 MW -1-20.5 10/29/98 20.5 < 1.00 < 0.00500 < 0.00500 < 0.00500 < 0.00500 <0.0500 MW -1-30.5 10/29/98 30.5 < 1.00 < 0.00500 < 0.00500 < 0.00500 <0.00500 < 0.0500 MW -1-40.5 10/29/98 40.5 < 1.00 < 0.00500 < 0.00500 < 0.00500 < 0.00500 < 0.0500 MW -1-54.5 10/29/98 54.5 < 1.00 < 0.00500 < 0.00500 < 0.00500 < 0.00500 <0.0500 Borin- MW -2 10/30/98 --- <1.00 <0.00500 <0.00500 <0.00500 <0.00500 ---- MW -2-10.0 10/29/98 10.0 < 1.00 < 0.00500 < 0.00500 < 0.00500 < 0.00500 < 0.0500 MW -2-20.5 10/29/98 20.5 < 1.00 < 0.00500 < 0.00500 < 0.00500 < 0.00500 < 0.0500 MW -2-30.5 10/29/98 30.5 2.94' 0.184 < 0.00500 0.187 0.579 < 0.0500 MW -2-40.5 10/29/98 40.5 14.8' 0.742 0.0338 0.338 1.45 <0.100 MW -2-50.5 10/29/98 50.5 593 6.44 20.3 13.9 57.2 < 1.00 Bari MW -3 MW -3-10.5 10/30/98 10.5 < 1.00 <0.00500 <0.00500 <0.00500 <0.00500 <0.0500 MW -3-20.5 10/30/98 20.5 < 1.00 <0.00500 <0.00500 <0.00500 <0.00500 < 0.0500 MW -3-30.5 10/30/98 30.5 < 1.00 < 0.00500 < 0.00500 < 0.00500 < 0.00500 < 0.0500 MW -3-40.5 10/30/98 40.5 < 1.00 < 0.00500 < 0.00500 < 0.00500 < 0.00500 < 0.0500 MW -3-49.5 10/30/98 49.5 52.6' 0.901 0.030 0.580 0.160 < 0.250 Stockpile Results S S 1 A -D 10/30/98 --- <1.00 <0.00500 <0.00500 <0.00500 <0.00500 ---- Fxplanationn TPHg = Total Petroleum Hydrocarbons as gasoline BTEX = benzene, toluene, ethylbenzene, total xylenes MTBE = methyl tert-butyl ether ---- = analysis not requested/not applicable Ppm = parts per million na yical .ahoratory Sequoia Analytical (ELAP #11624) Analytical Methods TPHg/BTEX/MTBE = LHS LUFT ' Chromatogram pattern indicated weathered gasoline C6 -C12. 346463.01