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Table 2 Groundwater Analytical Results-Oxygenate Compounds Former Tosco(Unocal)Service Station 46981 4707 Pacific Avenue Stockton,California WELT.ID DATE METHANOL ET14ANOL TBA MTBE !01�� (ppb) (ppb)E 1(ppb)A (ppb) (PPM) (PPB) fPPb) (ppb) (PP <100 4 0 <2 0 <2 0 <2 0 MW-11 41127-28100 -- <2 00 -- (cont) 06126-27100 -- <100 <2 00 <2 00 <2 00<2 0 <2 0 <2 4 <2 0 <2 0 09!22-23100 <500 <50 <2 O <2 00 <2 00 <2 00 -- -- - <1,000 <100 _ <2 QO <2 00 12126-27/00 <7 00 <2 00 <2 00 <2 00 03107-08101 -- <1,000 <100 <2 00 06/26-27101 - <1,000 <100 <2 0 <2 0 <2 0 <2 0 <2 0 <2 0 <2 0 <� 0 <2 0 <2 0 <2 0 09/12-13/01 -- <1,000 <100 <2 0 <1 0 <10 <10 <10 <10 <10 12112-13/01 - <500 <20 <2 0 <2Q <20 <20 <20 <20 03120-21/02 <500 <10Q <2 0 <20 <20 <20 <20 <20 06106-07/02 - <500 <100 <2 0 <2 0 <100 <2 0 <2 0 <2 0 <2 0 09/30/02 -- <500 <2 0 <2 0 12/30-31102 -- <500 <100 16 4 0 <2 0 <2 0 f _ <500 <100 110 <2 0 <2 0 <2 0 -- -- h MW-14 08121199 <2 0 <2 0 <2 0 11 <2 0 10125-26199 - - <100 150 <2 0 <100 170 <2 O <2 0 <2 0 88 01127-28100 - -- <4 00 <4 00 198 <4 00 20Q 346 <4 00 06126-27100 -- - < <1 00 <50 250 <2 0 <2 0 <2 0 10 <2 0 <500 09/22-23/00 <1,670 210 <3 34 <3 34 <3 34 684 <3 34 12126-27/00 <167 <2 50 <2 50 <2 50 4 14 <2 50 03107-08/01 <1,250 <125 198 12Q <2 0< <2 0 i 000 <100 <2 0 <2 0 3 6 06/26-27101 <2 0 <2 0 <2 0 <2 0 <1,000 <100 61 <2 0 09112-13!01 -- <1 0 <1 0 <1 Q <1 0 <500 <20 55 <10 12/12-13/01 -- <2 0 <2 0 <2 0 <2 0 <2 0 03120-21102 -- <500 <100 38 <2 0 <�0 <2 0 <2 0 <2 0 06106-07/02 -- <500 <100 18 - - -- 09/30/02 INACCESSIBLE-VEHICLE PARKED OVER WELL -- <2 0 <2 0 <2 0 <2 0 <100 <2 0 <2 0 <500 12130-31102 -- � . 02/31/02 6981 x1s/4180138