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Table 2 Groundwater Analytical Results-Oxygenate Compounds , Former To-;co(Unocal)Service Station#6981 4707 Pacific Avenue Stockton,California WELL ID DATE METHANOL ETHANOL TBA MTBE RIPE ETBE TAME 1,2'-DCA EDB M) ( b) _pp b) (ppb) ( b) ( b) (ppb) (pp b) (ppb) MW-2 10/25-26/99 <500 200 <10 <10 <10 -- -- Q 0 <100 140 <2 0 <2 0 li (cont) 01127-28/00 -- -- <2 00 <2 00 06/26-27100 -- <100 87 9 <2 00 <2 D I<2 0 <50 100 <2 0 �2 0 <2 0 09122-23/00 120 <soo <1 000 <2 00 <2 00 12/26-27100 <100 78 5 <2 00 i - <1,000 <100 732 <2 00 <2 00 <2 00 <2 00 <2 00 03107-08/01 -- <2 0 <2 0 '<2 0 i' <2 0 06126-27101 - <1,000 <100 47 <2 0 <t,0o0 <100 62 <2 0 <2 0 <2 0 1<2 0 <2 0 09112-13101 -- <10 <1 0 <1 0 <1 0 <1 0 q 12/12-13101 -- <500 40 94 � <20 <20 <201 <20 03/20-21/02 -- <500 <100 78 <2 0 <2 0 1, <2 Q 06106-07102 -- <500 <100 58 <2 0 <2 0 <2 0 i 09130102 -- <10,000 4 <40 <40 <40 <40,000 60 <4a �I<l0 ;I <10 12130-31102 -- <2,500 <500 49 <10 <10 I I <2 0 03129-30103 -- <500 <100 31 <2 0 <2 0 <2 0 ;2 0 06/25-26101 — <500 <100 19 <2 0 <2 0 <2 0 <2 0'! <2 0 I d 1 MW-4 12/08/97 <1 0 <500 <100 75 <2 0 <2 0 <2 0 -- 03/05/98 -- <2,500 <500 34 <10 <10 <10 i 05/27/98 -- <500 <100 32 <2 0 <2 0 <2 0 -07/21/98 -- <500 <100 is <2 0 <2 0 <2 0 10/14/98 -- <500 <100 10 <2 0 <2 0 <2 0 -- II 01/25-26/99 -- <500 <100 10 <2 0 <2 0 <2 0 ! -- -- <500 <100 4 8 <2 0 <2 0 <2 0 1 - 04119/-20199 -- -- 07115-16/99 -- -- <100 46 <2 0 <2 0 <2 0 i -- 10/25-26199 - -- <100 33 <2 0 - <2 0 <2 0 -01/27-28/00 -- -- <100 <2 0 <2 0 <2 0 <2 0 -- -- 06/26-27100 -- -- <100 <2 00 <2 00 <2 00 <2 00 1 -- 11 -- 09/22-23/00 <1 00 <500 <50 4 0 <2 0 <2 0 <2 0 ! <2 0;1 <2 0 12126-27100 -- <1,000 <100 <2 00 <2 00 <2 00 <2 00 -- -- 03/07-08101 -- <1,000 <100 <2 00 <2 00 <2 00 <2 00 i<2 00 <2 00 06126-27/01 -- <1,000 <100 <2 0 <2 0 <2 0 <2 0 �<2 0, <2 0 09112-13/01 -- <1,000 <100 <2 0 <2 0 <20 <2 0 <2 0 <2 0 6981 xlc*38 0 A*126/03 l