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TABLE 2 Oinued) GROUNDWATER ANALYTICAL RESULTS MOORE PETROLEUM 14800 W FRONTAGE ROAD MANTECA, CALIFORNIA (Ail results in parts-per-billion) Halogenated Monitoring Date Total Petroleum Aromatic Volatile Organics Volatile MTBE MTBE Well Collected Hydrocarbons Organics [80201 [82601 as Gasoline as Diesel Benzene Toluene Ethyl- Total 1,2-Dichloro- Methyl-tert- Methyl-tert- benzene Xylenes ethane butyl-ether butyl-ether DM-1 3119196 < < < < < < 1 9 < < 4123/96 --- --- --- --- --- --- <0 5 ---5/16/96 < < < < < < --- --- --" 9110196 <50 <50 <0 5 <0 5 <0 5 <0 5 <0 5 --- --- 12/17/96 <50 <50 <0 5 <0 5 <0 5 <05 1 2 --- --- 2/19/97 --- --- --- --- --- --- 2 7 --- --- 2/19/97 --- --- 3 2 [61 --- --- 5/29197 51 <50 <0 50 <0 50 <0 50 340 <0 50 <0 50 DM-2 2119/97 <50 <50 <0 5 <05 <0 5 <0 5 <0 5 --- --- 5/29197 62 <50 <0 50 <0 50 <0 50 270 2 0 10 --- DW-1 912/94 <50 --- <0 5 <0 5 <0 5 <0 5 0 6 --- --- DW-2 --DW-2 912194 <50 --- <05 <0 5 <0 5 <0 5 --- --- --- NOTE --- = Not analyzed DM-1 = Collected from subject site domestic well pressure tank DM-2 — Collected from spigot near pressure tank DW-1 = Collected from tap inside subject site DW-2 = Location of well unknown Ill = Non-typical hydrocarbon for gas present at 1,400 ppb [21 = Non-typrcal TPH present 131 = Re-analysis [41 — Unknown single hydrocarbon peak was present in sample (53 r MTBE was present at such level APEX ENVIROTECH,INC (6) = Split sample analyzed by Sequoia Analytical SECOND QUARTER 1997 ERA02 009