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i i • <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 2130 <br /> 7906 N EL Dorado Street, Stockton, CA <br /> TOC Depth to Water Level Ethyl- Total <br /> Well Date P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (41L) Wg/L) (pg/L) (pg1L) (pglL) (pglL) (mg/L) Comments <br /> VW-3 12/19/2002 – – 4158 – <50 -- 099 <050 3 8 1 i 8 9[2] - <br /> 03/06/2003 P -- 3923 – 120 -- 12 <0 50 4 0 31 14[2] 14 <br /> 06/11/2003 P – 3876 – <50 -- <0 50 <0 50 <0 50 <0 50 2 6[2] 456 <br /> 09/24/2003 P -- 4274 – <50 - <050 <0 50 <0 50 <0 50 5 4[2] – <br /> 12/10/2003 P -- 4160 – 78 – 1 1 <0 50 <0 50 <0 50 5 0[2] -- <br /> 03/08/2004 P -- 3930 – 580 – 056 J <0 50 66 J 37 J 19[2]J 176 <br /> 06/24/2004 NP – 4415 -- <50 – <050 <0 50 <0 50 <050 <0 50[2] 219 Water levels taken on <br /> 6/23104 <br /> 09/2012004 P 48 33 – 160 – 098 <0 50 24 1 11 1 4 4[2] 1 08 <br /> VW-4 12119/2002 -- -- 4130 – 110 -- 093 <0 50 <0 50 <0 50 <0 50[2] -- <br /> 03/06/2003 P - 3908 - 280 -- 1 7 <0 50 056 19 <0 50[2] 1 2 <br /> 06/11/2003 P - 3843 - <50 - <0 50 <0 50 <0 50 <0 50 <0 50[2] 25 <br /> 09/24/2003 P -- 4745 – <50 -- 050 <0 50 <050 <0 50 4 5[2] – <br /> 12110/2003 P -- 4133 – 120 – 20 22 44 29 <0 50[2] -- <br /> 03/08/2004 P – 3913 – 1,200 -- 36 <050 77 <0 50 4 6[2] 1 84 <br /> 06/24/2004 P -- 4396 – <50 -- <0 50 <0 50 <0 50 <0 50 <0 50[2] 244 Water levels taken on <br /> 6/23/04 <br /> 09120/2004 P – 4813 – 110 – <0 50 <0 50 <0 50 <0 50 <0 50[2] 15 <br /> VW-5 12/19/2002 – -- 41 11 -- 110 – 4 11 076 075 6 0[2] – <br /> 03/06/2003 P – 3961 – 570 -- 3 0 065 <10 <10 51[2] 56 <br /> 06/11/2003 P – 3877 -- <50 <050 <0 50 <0 50 <0 50 <0 50[2] 312 <br /> 09/24/2003 P -- 4280 – 110 – 091 <0 50 <0 50 <0 50 <0 50(2] -- <br /> 12/10/2003 P – 41 15 – 260 – 1 2 <0 50 <0 50 <0 50 <0 50[21 – <br /> 03/08/2004 P -- 3967 - 150 – 1 0 <0 50 <0 50 <0 50 <0 50[2] 308 <br /> 06/24/2004 NP – 4468 – 110 -- <2 5 <2 5 <2 5 <25 <2 5[21 157 Water levels taken on <br /> 6/23/04 <br /> 09/20/2004 P 1 48 68 1 150 – <50 —<5-0--T <50 <5 0 <5 0[2] 1 1 <br /> VW-6 03/06/2003 -- – – -- – – -- – -- -- -- – <br /> 12/10/2003 -- -- – – -- – -- – – -- -- – Well Dry <br /> 03/08/2004 -- - – – - -- -- – – -- -- – Well Dry <br /> 06/23/2004 NP – -- - - - -- – - -- – – Well Dry,Not Sampled <br /> 09/20/2004 – – – – – I – -- -- – – – – Well Dry,Not Sampled <br /> Report Date October 25,2004 Page 17 of 21 <br />