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Groundwater Monitoring Data and Analytical Results <br /> Tosca (Unocal) Service Station#6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> Wel!IDI Date DTW GWE TPH(G) B T E X MTBE <br /> TOC* (ft ) ift) Pb) (ppb) (ppb) Pb) Wb) (PPb1 <br /> MW-12 04/25/96 38 39 -2741 <50 <05 <0 5 <05 <05 <40 <br /> (cont) 07/24/96 DESTROYED -- - -- -- -- -- -- <br /> MW-13 10121-22192 -- -- <50 <05 <05 <05 <05 -- <br /> 01/13/93 -- -- <50 <05 <05 <0 5 <05 <br /> 1152 04/26/93 51 15 -3963 <50 <05 <05 <0 5 <05 -- <br /> 07/26/93 5221 -4069 <50 <0 5 <05 <0 5 <05 -- <br /> 10/20/93 5274 -41 22 <50 <05 <05 <05 <05 -- <br /> 01/17-18/942 50 19 -3867 180 2 3 20 90 39 -- <br /> 02/28/942 4905 -37 53 <50 <05 <0 5 <0 5 093 -- <br /> 04/25-26194 4802 -3650 <50 <0 5 081 <05 1 4 -- <br /> 07/25-26194 5051 -3899 <50 <0 5 <05 <05 <0 5 -- <br /> 10/26-27194 5174 -4022 <50 <05 <0 5 <05 <05 -- <br /> 01/25-26195 48 93 -3741 <50 <05 <05 <05 <05 -- <br /> 04/26-27195 44 17 -3265 <50 055 2 1 <0 5 2 1 -- <br /> 07/26/95 4536 -33 84 <50 059 2 1 <0 5 24 -- <br /> 10/25-26/95 4628 -3476 <50 <0 5 <05 <05 <05 -- <br /> 01/24/96 43 30 -31 78 <50 <0 5 <05 <05 <05 -- <br /> 04/25/96 38 38 -26 86 <50 <0 5 <0 5 <05 <05 <40 <br /> 07/24/96 DESTROYED -- -- -- -- <br /> (MW-14)' 02/28/94 -- <50 <05 <05 <05 <05 -- <br /> VW-1 <br /> NA 07/24/96 3827 -- 180 1 9 19 1 6 7 7 130 <br /> 10/23/96 -- -- SAMPLED SEMI-ANNUALLY <br /> 01/21/97 3647 -- <50 <05 <05 <05 <05 <50 <br /> 07/16/97 33 89 - <50 <05 <05 <05 <05 <50 <br /> 10/15/97 3572 -- <50 <05 <05 <05 <05 <5 0/<2 06 <br /> 12/08/97 35 62 <br /> 03/05/98 31 33 -- <50 <0 50 <0 50 <0 50 <0 50 <2 5/<2 06 <br /> 05/27/98 2792 -- <50 <0 50 <0 50 <0 50 <0 50 <2 5/<2 06 <br /> 6981 xls/#180138 11 As of 10/14/98 <br />