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L U Table 1. Summary of Analytical Results of October 2003 Grab Soil Samples Collected from Three Fuel'Dispenser Excavations and the Waste Oil Tank�Piping Excavation PG&E Stockton Service Cenfer,4040,Wes#Lane,Stockton,California * _ - Table 1A Fuel Dispenser Soil Samples-Hydrocarbons and Fuel Oxygenates Sample Ethyl Fuel Oxygenates 5 Sample Sample Depth Diesel Gasoline Benzene Toluene benzene Xylenes MTBE TBA DIPEEETBE TAME ID Date (feet) (mg/Kg) (mg/Kg) (mg/Kg) (mg/Kg) (mg/Kg) (mg/Kg) (mg/Kg) (mg/Kg) (mg/Kg) (mg/Kg) UNL1 4') 24-Oct-03 4 _ <1.0 <0.005 <0.005 <0.005 <0.005 1.5 ND ND ND UNL2(4') 24-Oct-03 4 - <1,0 <0.005 <0.005 <0.005 <0.005 0.0055 ND ND ND Diese! 4' 24-Oct-03 4 140 2.4 <0.005 <0.005 <0.005 <0.005 ND — Nor_-7 i ABBREVIATIONS AND SYMBOLS UNL1= Eastern Gasoline Dispenser f MTBE= Methyl Tertiary Butyl Ether TBA= Tert-Butyl Alcohol DIPE= Di-isopropyl Ether ETBE= Ethyl Tert-Butyl Ether l TAME= Tert-Amyl Methyl Ether mg/Kg= milligrams per kilogram ND= none detected t <= not detected at detection limit shown - Not tested NOTES 1 Detections arein bold. 2 Samples were collected by Geo-Logic(Crockett,CA). 3 Analyses were performed by McCampbeli Analytical Inc.(Pacheco,CA). Table 1B. Waste Oil Tank Piping Excavation Soil Samples-LUFT 5 Metals and VOCs t Sample Cad- Chro- ■VOCsI t Sample Sample Depth mium mium Lead Nickel Zinc PCE ID Date (feet) (mg/Kg) (mg/Kg) (mg/Kg) (mg/Kg) (mg/Kg) (mg/Kg) Pi 4.5') 17-Oct-03 4.5 <1.5 45 7.8 35 46 0.0079 PIM. 17-Oct-03 4 <1.5 37 9.1 34 90 0.0055 a ABBREVIATIONS LUFT= Leaking Underground Fuel Tank VOCs= Volatile Organic Compounds PCE= Tetrachloroethene mg/Kg= milligrams per kilogram <= not detected at detection limit shown * NIA= Not applicable NOTES s. 1 Detectlons are Ir bold. 2 Samples were collected by Geo-Logic(Crockett,CA). l 3 Analyses were performed by McCampbeli Analytical Inc.(Pacheco,CA). 4 None of the other tested VOCs were detected. � r r 402.331.04.30 5/3/2004 Stock_SC_Chem_Results.xls Table 1