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. E 2 . SUMMARY OF GROUNDWATER ANALYTICAL RESULTS Jay's Mini-Mart,3302 N West Lane,Stockton,CA Page 1 of 1 (Reported in u Sample Date TPHd TPHg Benzene Toluene Ethyl Xylenes MTBE TBA DIPE ETBE TAME 1 2-DCA EDB Methanol Ethanol ID Benzene MW1 01/15/04 <50 <50 <0 5 <0 5 <0 5 <1 0 <20 <20 <2 0 <2 0 <2 0 <2 0 <2 0 — 04/12/04 <50 <50 <0 5 <0 5 <0 5 <1 0 <20 <20 <2 0 <2 0 <2 0 <2 0 <2 0 - — 07/09/04 <50 <50 <0 5 <0 5 <0 5 <1 0 <0 5 <5 0 <05 <0 5 <0 5 <0 5 <0 5 <50 <5 0 10/13/04 <50 <50 <0 5 <0 5 <0 5 <1 0 <0 5 <5 0 <0 5 <05 <0 5 <0 5 <0 5 -- — 09/19/05 <50 <50 <0 5 <0 5 <0 5 <1 0 <0 5 <5 0 <0 5 <0 5 <0 5 <0 5 <0 5 MW2 01/15/04 <50 <50 <0 5 <0 5 <0 5 <1 0 <2 0 <20 <2 0 <20 <2 0 <2 0 <2 0 - — 04/12/04 <50 <50 <0 5 <0 5 <0 5 <1 0 <2 0 <20 <2 0 <2 0 <2 0 <2 0 <2 0 — - 07/09/04 <50 <50 <0 5 <0 5 <0 5 <1 0 <0 5 <5 0 <0 5 <0 5 <0 5 <05 <0 5 <50 <5 0 10/13/04 <50 <50 <0 5 <0 5 <0 5 <1 0 <0 5 <5 0 <0 5 <0 5 <0 5 <0 5 <0 5 -- -- 09/19/05 <50 <50 <0 5 <0 5 <0 5 <1 0 <0 5 <50 <0 5 <0 5 <0 5 <0 5 <0 5 MW3 01/15/04 <50 <50 <0 5 <0 5 <0 5 <1 0 <2 0 <20 <2 0 <20 <2 0 <2 0 <2 0 -- -- 04/12/04 <50 <50 <0 5 <0 5 <0 5 <1 0 <2 0 <20 <2 0 <20 <2 0 <2 0 <2 0 — — 07/09/04 <50 <50 <0 5 <0 5 <0 5 <1 0 <0 5 <50 <0 5 <0 5 <0 5 <0 5 <0 5 <50 <50 10/13/04 <50 <50 <0 5 <0 5 <0 5 <1 0 <0 5 <50 <0 5 <0 5 <05 <0 5 <0 5 -- -- 09/19/05 <50 <50 <0 5 <0 5 <0 5 <1 0 <0 5 <5 0 <0 5 <0 5 <0 5 <0 5 <0 5 Soil 131-W* 09/07/00 <50 80, <G5 1 8 <0 5 <0 5 10 <5 0 <1 0 <1 0 <1 0 — - - — SB2@53'** 05/22/03 <50 <50 <0 5 <0 5 <0 5 <1 0 <0 50 <5 0 <1 0 <1 0 <1 0 <0 50 <5 0 -- — SB-3** 05/22/03 1802 390 7 4 <0 5 21 3 5 6 8 <5 0 <1 0 <1 0 <1 0 31 <50 - — SB-4** 05/23/03 72 z 81 <0 5 <0 5 <0 5 <1 0 72 <5 0 <1 0 <1 0 <1 0 <0 50 <50 — Notes ug/l denotes micrograms per Liter(parts per billion) TPHd denotes Total Petroleum Hydrocarbons as diesel analyzed by EPA Method 80158 +� TPHg denotes Total Petroleum Hydrocarbons as gasoline analyzed by EPA Method 80156/8021 B MTBE denotes methyl tertiary butyl ether analyzed by EPA Method 8260B TBA denotes tertiary butyl ether analyzed by EPA Method 8260B DIPS denotes di-isopropyl ether analyzed by EPA Method 8260B ETBE denotes ethyl tertiary butyl ether analyzed by EPA Method 8260B TAME denotes tertiary amyl methyl ether analyzed by EPA Method 8260B 1,2-DCA denotes 1 2-dichloroethane analyzed by EPA Method 8260B EDB denotes ethyl dibromide analyzed by EPA Method 8260B Methanol and Ethanol analyzed by EPA Method 8260B --denotes not analyzed denotes lab results reported by John P Cummings&Associates **denotes lab results reported by GHH Engineering Inc denotes that"unmodified or weakly modified gasoline is significant"in the sample 2 denotes that"Results in the diesel organics range are primarily due to overlap from a gasoline range product"