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Table 1 Historical Soil Sample Analytical Results 7-Eleven Store#14117 2725 Country Club Boulevard Stockton,California Ethyl- t P B TAM 1,2- Meth- Eth- Ace- Sample Date Benzen Toluene benzene Xylenes TPHg 8020 8260 8260 8260 8260 8260 DCA EDB anol anol tone Lead Number (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mglkg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mgfkg) (mg/kg) (mg/kg) (mgfkg) (mg/kg) (mg/kg) (mg/kg) NOteS Groundwater Monitoring Wells MW-1@15. 05/13/99 <0.001 <0.001 0.0025 <0.001 <0.1 <0.01 <0.01 - - MW-1 @21' 05/13/99 <0.001 <0.001 0.0017 <0.001 <0.1 <0.01 <0.01 MW-1@25' 05/13/99 0.006 <0.001 0.0032 <0.001 <0.1 <0.01 <0.01 - -MW-1@30' 05/13/99 <0.001 <0.001 <0.001 MW-2@15' 05/13/99 0.0011 <0.001 0.0193 <0.001 0.2 <0.01 <0.01 - -MW-2@25' 05/13/99 0.0026 0.002 0.005 0.0031 0.4 <0.01 <0.01 MW-2@35' 05/13/99 0.006 <0.001 0.0016 0.0019 <0.1 <0.01 <0.01 MW-2@40' 05/13/99 <0.005 <0.005 <0.005 <0.005 <1 <0.05 MW-2@45' 05/13/99 <0.005 <0.005 <0.005 <0.005 <1 <0.05 - -MW-2@50' 05/13/99 <0.001 <0.001 0.0023 0.003 0.154 <0.01 <0.01 MW-3@15' 05/13/99 2.89 4.99 8.26 33.8 429 1.95 <2.5 MW-3@20' 05/13/99 0.0292 0.0721 0.132 0.521 1.67 0.0395 0.011 MW-3(a-25- 05/13/99 0.0035 0.0058 0.0086 0.0421 0.177 <0.01 <0.01 - - MW-4@15' 05/14/99 0.184 0.162 0.612 0.496 16.6 <0.5 <0.01 - -MW-4@20' 05/14/99 0.0184 0.0022 0.0111 0.011 0.274 0.0782 0.119 MW-4@25' 05/14/99 0.0651 0.0133 0.0688 0.425 2.41 0.0585 0.043 - MW-5 11' 10/30/01 <0.005 <0.005 <0.005 <0.005 <1 - <0.005 <0.02 <0.005 <0.005 <0.005 - - - - MW-5 20' 10/30/01 <0.005 <0.005 <0.005 <0.005 <1 <0.005 <0.02 <0.005 <0.005 <0.005 - MW-6 11' 10/30/01 <0.005 <0.005 <0.005 <0.005 <1 - <0.005 <0.02 <0.005 <0.005 <0.005 - - MW-6 20' 10/30/01 <0.005 <0.005 <0.005 <0.005 <1 - <0.005 <0.02 <0.005 <0.005 <0.005 - - - - MW-7 11' 10/30/01 <0.005 <0.005 <0.005 <0.005 <1 <0.005 <0.02 <0.005 <0.005 <0.005 MW-7 20' 10/30/01 <0.005 <0.005 <0.005 0.006 <1 - <0.005 <0.02 <0.005 <0.005 <0.005 - - MW-8,10' 08/14/03 6.2 99 73 550 4,400 <1.0 <5.0 <1.0 <1.0 <1.0 <1.0 <1.0 <100 <10 <2.5 MW-8,15' 08/14/03 34 420 180 980 11,000 - <2.5 <10 <2.5 <2.5 <2.5 <2.5 <2.5 <200 <20 12 - MW-8,20' 08/14/03 0.036 0.29 0.05 0.28 2.2 - <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.20 <0.010 <0.050 MW-8,35' 08/14/03 0.016 0.13 0.04 0.23 1.8 - <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.20 <0.010 <0.050 MW-8,40' 08/14/03 0.12 0.55 0.66 0.8 19 - <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.40 <0.050 <0.050 - MW-8,45' 08/14/03 0.023 0.18 0.067 0.38 3.1 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.20 <0.010 <0.050 MW-8,50' 08/14/03 <0.0050 <0.0050 <0.0050 0.0087 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.20 1 <0.010 <0.050 t LA 7-11\7-Eleven Stores\14117\Tables\14117 Historical Soil.xls Page 4 of 6