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TaG.e 2 Soil Sample Analytical Results 7-Eleven Store#20632 4627 Da Vinci Drive Stockton,CA Soil.. Sample Ethyl- MtBE" Total Sample Date Depth Benzene Toluene benzene Xylenes TPHg 8020 8260 TBA DIPE ETBE TAME 1,2-RCA EDB Lead Note I.D. ftb s (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg)' mg/kg) (mg/kg) (mglkg) (mg/kg} (m9/k9)' (mg/kg) Groundwater Monitoring Wells MW-1 09/22/97 5 <0.005 <0.005 <0.005 <0.005 <1 <0.05 0.02 0.036 <0.005 <0.005 <0.005 - - 15 <0.005 <0.005 <0.005 <0.005 <1 <0.05 <0.005 <0.02 <0.005 <0.005 <0.005 -- - MW-2 09/22/97 10 <0.005 <0.005 <0.005 <0.005 <1 <0.05 <0.005 <0.005 <0.005 <0.005 <0.005 - - - 15 <0.005 <0.005 <0.005 <0.005 <1 0.09 0.12 <0.02 <0.005 <0.005 <0.005 - - MW-3 09/22/97 5 <0.005 <0.005 <0.005 <0.005 <1 <0.05 <0.005 <0.005 <0.005 <0.005 <0.005 - - 20 <0.005 <0.005 <0.005 <0.005 <1 <0.05 <0.005 <0.02 <0.005 <0.005 <0.005 - - MW-4 09/22/97 5 0.12 0.21 0.47 3.2 71 11 7.3 10 <0.005 <0.005 <0.005 - - - b 10 <0.005 <0.005 <U05 0.014 <1 1.5 2.5 2.7 0.0059 <0.005 <0.005 -- - - 15 <0.005 <0.005 <0.005 0.0066 <1 0.086 0.092 X0.02 <0.005 <0.005 <0.005 - - - 20 <0.005 <0.005 <0.005 <0.005 <1 <0.05 0.032 <0.02 <0.005 <0.005 <0.005 - - - MW-5 12/31/98 5 0.0046 <0.001 0.0041 0.0019 <1.0 <0.01 0.012 <0.1 <0.005 <0.005 <0.005 -- - - b 10 1.02 3.14 14.5 59.4 780 <5 <0.25 <5 <0.25 <0.25 <0.25 - - - 15 <0.001 <0.001 <0.001 <0.001 <1.0 <0.01 <0.005 <0.1 <0.005 <0.005 <0.005 - - - 20 <0.001 <0.001 <0.001 <0.001 <1.0 <0.01 <0.005 <0A <0.005 <0.005 <0.005 - - - MW-6 04/08/02 10 <0.005 <0.005 <0.005 <0.005 <0.5 - <0.02 <0.05 <0.02 <0.02 <0.02 <0.005 <0.005 - 15 <0.005 <0.005 <0.005 <0.005 <0.5 - <0.02 <0.05 <0.02 <0.02 <0.02 <0.005 <0.005 -- MW-7 04/09/02 10 <0.005 <0.005 <0.005 <0.005 <0.5 - <0.02 <0.05 <0.02 <0.02 <0.02 <0.005 <0.005 - 15 <0.005 <0.005 <0.005 <0.005 <0.5 - 2.4 <0.05 <0.02 <0.02 <0.02 <0.005 <0.005 - SPV-1 04/09/02 10 0.035 0.0062 0.150 0.141 13 - 1.2 1.4 <0.02 <0.02 <0.02 <0.005 <0.005 - 15 <0.005 <0.005 <0.005 <0.005 <0.5 - 1.3 50 50.00 <0.02 <0.02 <0.005 <0.005 - SPV-2 04/09/02 10 <0.005 <0.005 <0.005 <0.005 <0.5 - <0.02 <0.05 <0.02 <0.02 <0.02 <0.005 <0.005 -- 15 <0.005 <0.005 <0.005 <0.005 <0.5 � 0.62 <0.05 <0.02 <0.02 <0.02 <0.005 <0.005 - Stockpile Soil Samples SPI (ABCD) 01/31/05 -- <0.0050 <0.0050 <0.00501<0,00501 <1.0 -- 1<0.005 4.85 xa ana Ion ft bgs=Feet below ground surface TBA=Tertiary Butanol EDB=1,2-dib moethane mg/kg=milligrams per kilogram or parts-per-million DIPE=Di-isopropyl ether Total Leadi6. PA Method 6010B. K=Not detected above laboratory reporting limit ETBE=Ethyl-tertiary-butyt-ether �y TPHg=Total petroleum hydrocarbons-as-gasoline TAME=Tertiary-amyl-methyl ether f/ MtBE=Methyl-tert-butyl ether 1,2-DCA=1,2 dichlorcethane y a=Geoprobe soil borings drilled 25 degrees from vertical(sample depths corrected to vertacl depth bgs) b=MtBE and TBA concentrations exceeded calibration range. 20632 Current Soil Data.xls Page 3 of 3