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TABLE 2 Page 9 of 9 SOIL ANALTYICAL DATA SHELL-BRANDED SERVICE STATION 6131 PACIFIC AVENUE STOCKTON,CALIFORNIA Sample MTBE by MTBE by Depth TPHg Benzene Toluene Ethylbenzene Xylenes 8020 8160B DIPE ETBE TAME TBA 42-DCA EDB Methanol Sample ID (feet) Date Sampled mg/kg mg/kg mg/kg mg/kg mglkg mglkg nrg✓kg mglkg nrglkg ntglkg mg/kg mg/kg ng/kg mg/kg SF Bay RWQCB ESLs 83 0.044 2.9 3.3 2.3 0.023 0.023 - - - 0.075 0.0045 0.00033 - MW-16 20 I1-Oct-10 <0.50 <0.0050 <0.0050 <0.0050 <0.0050 - <0.0050 - - - <0.050 _ - - - MW-16 30 11-Oct-10 <0.50 <0.0050 <0.0050 <0.0050 <0.0050 - <0.0050 - - - <0.050 - - - • MW-16 40 11-Oct-10 <0.50 <0.0050 <0.0050 <0.0050 <0.0050 - <0.0050 - - - <0.050 - - - MW-16 45 11-Oct-10 <0.50 <0.0050 <0.0050 <0.0050 <0.0050 - <0.0050 - - - <0.050 - - - MW-16 50 11-Oct-10 <0.50 <0.0050 <0.0050 <0.0050 <0.0050 - <0.0050 - - - <0.050 - - - MW-16 60 I1-Oct-10 <0.50 <0.0050 <0.0050 <0.0050 <0.0050 - <0.0050 - - - <0.050 - - - MW-16 70 11-Oct-10 <0.50 <0.0050 <0.0050 <0.0050 <0.0050 - <0.0050 - - - <0.050 - - - Abbreviations and Notes: All results in mg/kg unless othwise indicated TPHg=Total petroleum hydrocarbons as gasoline by EPA Method 8015(Modified)or equivalent. Reported as low/medium boiling point hydrocarbons quantitated against a gasoline standard for B-2 through B-14 and as petroleum hydrocarbons volatile for TS-1 through TS-6.TR-1 through TR-6,MW-1,MW-2,MW-3,and VEW-2. Benzene,toluene,ethylbenzene,and xylenes by EPA Method 8020 and 8260B MTBE=Methyl tertiary-butyl ether by EPA Method noted DIPE=Diisopropyl ether by EPA Method 8260B ETBE=Ethyl tertiary-butyl ether by EPA Method 8260B TAME=Tertiary-amyl methyl ether by EPA Method 8260B TBA=Tertiary-butanol by EPA Method 82601 • 1,2-DCA=1,2-Dichloroethane by EPA Method 8260 EDB=1,2-Dibromoethane by EPA Method 8260 Methanol by EPA 8015(Modified) Rig=Feet below grade -=Not analyzed ND=Not detected(reporting limit not specified in previous table) <x=Not detected at reporting limit x a=Results were evaluated to the MMDL,concentrations>--to the MDL but<RL,if found. Results inbold exceed the SF Bay Regional Water Quality Control Board(RWQCB)Environmental Screening Level(ESL)for deep soil where groundwater is a potential drinking water source. CRA2408%(27)