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T1 <br /> Groundwater Monitoring and Analytical Results <br /> Former Tosca(Unocal)Service Station#6981 <br /> 4707 Pacific Avenue <br /> Stockton,California <br /> WELL IDI DATE DTW S1 GWE TPH-G B T E X MTBE <br /> TOC*(ft) (ft) (Jt bgs) Of) (Ppb) (ppb) (ppb) (ppb) (Ppb) (ppb) <br /> VW-7 03/20-21/02 3007 55 0-60 0 -1840 26,000' 590 930 640 4,700 <500/<40" <br /> (cont) 06106-07102" 3047 -1880 2,100 22 62 61 450 --1<2 0" <br /> 09/30102'8 3286 -2119 30,000 380 760 570 3,800 <100 <br /> PTW-1 <br /> 01/25-26199 2891 52 5-72 5 -- <50 <0 50 <0 50 <0 50 1 5 94/84 6 <br /> 04119-20199 2642 <50 <0 50 <0 50 <0 50 <0 50 4 2/3 4" <br /> 07/15-16/99 2792 -- <50 <0 50 <0 50 <0 50 <0 50 <2 5/<2 0" <br /> 10/25-26199 2949 -- <50 <0 50 085 <0 50 1 1 <2 5/<2 0" <br /> 01127-28100 2897 <50 <0 50 060 <0 50 1 1 <2 5/<2 0" <br /> 06126-27100 2623 -- <50 0 <0 500 0 904 <0 500 0 955 <5 0014 57" <br /> 11 88 09122-23/00 2876 -1688 <50 <0 50 <0 50 <0 50 <0 50 <2-51<2 0" <br /> 12/26-27/00 2865 -1677 <50 0 <0 500 <0 500 <0 500 <0 500 <5 00/<2 00" <br /> 03/07-08101 2837 -1649 <50 0 <0 500 <0 500 <0 500 <0 500 <5 00/<2006 <br /> 06/26-27/01 2936 -1748 <50 <0 50 <0 50 <0 50 <0 50 12118" <br /> 09/12-13/01 3132 -1944 <50 <0 50 <0 50 <0 50 <0 50 15/20' <br /> 12/12-13101 3155 -1967 <50 <0 50 <0 50 <0 50 <0 50 <5 017 5" <br /> 03120-21102 3034 48 46 <50 <0 50 <0 50 <0 50 <0 50 <5 0/<2 0" <br /> 06/06-07/02" 3082 -1894 <50 <0 50 14 <0 50 14 -4<2 0" <br /> 09130/02iA 33 35 -2147 <50 079 14 <0 50 20 36 <br /> Trip Blank <br /> TB-LB 03/05/98 -- -- -- <50 <0 50 <0 50 <0 50 <0 50 <25 <br /> 03/16/98 -- - <50 <0 50 <0 50 <0 50 <0 50 <25 <br /> 05/27/98 -- -- <50 <0 50 <0 50 <0 50 <0 50 <2 5 <br /> 07/21/98 -- -- <50 <0 50 <0 50 <0 50 <0 50 <5 0 <br /> 10/14/98 -- -- <50 <0 50 <0 50 <0 50 <0 50 <2 5 <br /> 01/25-26/99 -- - <50 <0 50 <0 50 <0 50 <0 50 <2 5 <br /> 04119-20/99 -- -- <50 <0 50 <0 50 <0 50 <0 50 <2 5 <br /> 07115-16/99 - -- <50 <0 50 <0 50 <0 50 <0 50 <2 5 <br /> 6981 xls/#180138 11 As of 09/30/02 <br />