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r i TABLE 2 ANALYTICAL RESULTS OF SOIL SAMPLES - EPA METHODS 801518020 / 8260B National Freight 2850 Loomis Road, Stockton, California (mg/kg) Sample Sample TPH-g TPH-d MTBEt Benzene Toluene Ethyl- Total DIPE ETBE MTBE TAME TBA Naphthalene 1D Date benzene Xylenes B2-150 05/14/07 <1 <1 - <0.005 <0.005 <0.005 <0.005 - - <0.005 - - P6-5 03/09/10 <1 <1 - <0.005 <0.005 <0.005 <0.005 - - <0.005 - - <0.005 P6-15 03/09/10 <1 <1 - <0.005 <0.005 <0.005 <0.005 - - <0.005 - - <0.005 ESL 1 (Commercial): 83 83 --- 0.27 2.9 4.7 2.3 -- --- --- — 0.075 2.8 ESL 2(Commercial): 83 83 2.0 2.9 4.7 2.3 --- -- --- --- 0.075 4.8 Notes: mg/kg: milligrams per kilogram TPH-g: total petroleum hydrocarons quantified as gasoline TPH-d: total petroleum hydrocarbons quantified as diesel MTBE: methyl tertiary butyl ether I. Samples analyzer/in arrordanee with EPA Method 8098 DIPE: di-isopropyl ether ETBE: ethyl tertiary butyl ether TAME: tertiary amyl methyl ether TBA: tertiary butanol <: indicates constituents were not reported at a concentration greater than the reporting limit shown not analyzed t: strongly aged gasoline or diesel range compounds are significant 1 +: unmodified or weakly modified diesel is significant TPH concentration is mostly in the diesel range ESL 1: San Francisco Bay Regional Water Quality Control Board California Environmental Protection Agency Environmental Screening Level for soil samples collected at depths of 3 meters below surface grade ESL 2: San Francisco Bay Regional Water Quality Control Board California Environmental Protection Agency Environmental Screening Level for soil samples collected at depths greater than 3 meters below surface grade There is no ESL for the listed constituent Commercial ESLs are the San Francico Bay Regional Water Quality Control Board California Environmental Protection Agency Environmental Screening Levels for commercial or industrual land use. Advanced GeoEnvironmental,Inc.