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Table 1. Soil Chemical Analytical Data Chevron Station #9-3232 8660 Lower Sacramento Road Stockton, California Explanation: TPHg = Total Petreoleum Hydrocarbons as gasoline TPHd = Total Petroleum Hydrocarbons as diesel BTEX = Benzene, toluene, ethylbenzene and xylenes O&G = Total Recoverable Petroleum Oil MtBE = Methyl tert-butyl ether PCBs = Polychlorinated biphenyls ppm = parts per million feet bgs = feet below ground surface ND = none detected NA = not analyzed ---- = not applicable Analytical Methods: TPHg/BTEX/MTBE: EPA Methods 5030/8015 Mod./8020 TPHd: EPA Methods 3550/8015 Mod. O&G: Standard method 5520E&F (Gravimetric) Halogenated Organics: EPA Method 8010 Semi -volatile Organics: EPA Method 8270 metals: EPA Method 6000 series PCB: EPA Method 8082 Analytical Laboratory Sequoia Analytical (FLAP #1894, #1271) Notes: 1 Laboratory report indicated gasoline and unidentified hydrocarbons C6 -C12. 2 Laboratory report indicates gasoline and unidentified hydrocarbons >C7. 3 Laboratory report indicates unidentified hydrocarbons >C12. 4 All analytes reported as none detected except tetrachloroethene (0.5 ppm). 5 Reported as MtBE by EPA Method 8020/EPA Method 8260. Samples analyzed by EPA Method 8260 were also reported as none detected for ethanol, tert-butanol, di -isopropyl ether, ethyl tert-butyl ether and tert-amyl methyl ether. 6 Also analyzed for cadmium (<0.50 ppm), chromium (28 ppm), nickel (20 ppm) and zinc (58 ppm). ' Also analyzed for cadmium (<0.50 ppm), chromium (14 ppm), nickel (12 ppm) and zinc (28 ppm). $ Also analyzed for cadmium (<0.50 ppm), chromium (27 ppm), nickel (17 ppm) and zinc (50 ppm). 346463.02 Page 2 of 4 Sample Halogenated Semivolatile Sample Sample Depth TPHg Benzene Toluene Ethylbenzene Xylenes MtBE' TPHd Organics Organics PCBs O&G Lead ID Date (feet bgs) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) SP -2 3/11/99 ---- <1.0 <0.0050 <0.0050 <0.0050 0.017 <0.050/<0.10 NA NA NA NA NA NA SP -3 3/11/99 ---- <1.0 <0.0050 <0.0050 <0.0050 0.0087 <0.050/<0.10 NA NA NA NA NA NA SP -4 3/11/99 ---- <1.0 <0.0050 <0.0050 <0.0050 0.013 <0.050/<0.10 3.211 ND NA ND NA 1213 SP -5 3/11/99 ---- <1.0 <0.0050 <0.0050 <0.0050 <0.0050 <0.050/<0.10 NA NA NA NA NA NA SP -6 3/11/99 ---- <1.0 <0.0050 <0.0050 <0.0050 0.018 <0.050/<0.10 NA NA NA NA NA NA SP -7 3/11/99 ---- <1.0 <0.0050 <0.0050 <0.0050 <0.0050 <0.050/<0.10 NA NA NA NA NA NA SP -8 3/11/99 ---- <1.0 <0.0050 <0.0050 <0.0050 <0.0050 <0.050/<0.10 NA NA NA NA NA SP -11 3/11/99 ---- <1.0 <0.0050 <0.0050 <0.0050 <0.0050 <0.050/<0.10 <1.0 NA NA NA NA SP -12 3/11/99 ---- <1.0 <0.0050 <0.0050 <0.0050 <0.0050 <0.050/<0.10 NA NA NA NA NA NA SP -13 3/11/99 ---- <1.0 <0.0050 <0.0050 <0.0050 <0.0050 <0.050/<0.10 NA NA NA NA NA NA SP -14 3/11/99 ---- <1.0 <0.0050 <0.0050 <0.0050 <0.0050 <0.050/<0.10 NA NA NA NA NA NA Explanation: TPHg = Total Petreoleum Hydrocarbons as gasoline TPHd = Total Petroleum Hydrocarbons as diesel BTEX = Benzene, toluene, ethylbenzene and xylenes O&G = Total Recoverable Petroleum Oil MtBE = Methyl tert-butyl ether PCBs = Polychlorinated biphenyls ppm = parts per million feet bgs = feet below ground surface ND = none detected NA = not analyzed ---- = not applicable Analytical Methods: TPHg/BTEX/MTBE: EPA Methods 5030/8015 Mod./8020 TPHd: EPA Methods 3550/8015 Mod. O&G: Standard method 5520E&F (Gravimetric) Halogenated Organics: EPA Method 8010 Semi -volatile Organics: EPA Method 8270 metals: EPA Method 6000 series PCB: EPA Method 8082 Analytical Laboratory Sequoia Analytical (FLAP #1894, #1271) Notes: 1 Laboratory report indicated gasoline and unidentified hydrocarbons C6 -C12. 2 Laboratory report indicates gasoline and unidentified hydrocarbons >C7. 3 Laboratory report indicates unidentified hydrocarbons >C12. 4 All analytes reported as none detected except tetrachloroethene (0.5 ppm). 5 Reported as MtBE by EPA Method 8020/EPA Method 8260. Samples analyzed by EPA Method 8260 were also reported as none detected for ethanol, tert-butanol, di -isopropyl ether, ethyl tert-butyl ether and tert-amyl methyl ether. 6 Also analyzed for cadmium (<0.50 ppm), chromium (28 ppm), nickel (20 ppm) and zinc (58 ppm). ' Also analyzed for cadmium (<0.50 ppm), chromium (14 ppm), nickel (12 ppm) and zinc (28 ppm). $ Also analyzed for cadmium (<0.50 ppm), chromium (27 ppm), nickel (17 ppm) and zinc (50 ppm). 346463.02 Page 2 of 4