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Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 5469 <br /> 430 S Wilson Way, Stockton, CA <br /> Calc <br /> P1 TOG Depth to GW ORO Benzene Toluene Hyl' Xylenes MTBE DO <br /> Well No Date Elevation Water benzene ' <br /> NP (ft MSL) (ft BGS) Elea WIL) (pg►L) WIL) (p91L) (pq'L) (P9n-) (m91L) pH Comments <br /> (ft MSL) <br /> MW 6125/2001 1649 3820 -2171 1 NS NS NS NS NS NS Not sampled <br /> 6128/2001 164 - - - - - - <2 <br /> 6128/2001 P 1649 3834 -2185 <50 <05 <0 5 <0 5 <0 5 <2 0[2] <br /> 9/14/2001 164 - - - - - <2 <br /> 911412001 P 1649 3967 2318 <50 <05 <0 5 <05 <0 5 <2 0[2] <br /> 12/14/2001 164 - - 18 <br /> 12/14/2001 P 1649 4080 2431 <50 <0 50 <0 50 <0 50 <0 50 18[2] - <br /> 2121/2002 164 - - - - - 59 <br /> 2121/2002 P 1649 4065 2416 <50 <0 50 <0 50 <0 50 <0 50 59[2] <br /> 1 210 812 00 5 P 4385 -2736 <50 <0 50 <0 50 <0 50 <0 50 <0 50 94 72 <br /> 09/14/2004 4492 -2843 <50 <0 50 <0 50 <0 50 <0 50 <0 50 78 - Well mammible I <br /> 12/09/2004 P 4579 2930 <50 <0 50 <0 50 <0 50 <0 50 090 26 77 <br /> 03/1612005 P 4473 2824 <50 <0 50 <0 50 <0 50 <0 50 <0 50 67 77 <br /> 06/08/2005 P 4265 2616 <50 <0 50 <0 50 <0 50 <0 50 <0 50 73 70 <br /> 09108!2005 P 4337 -2688 <50 <0 50 <0 50 <0 50 <0 50 <0 50 18 78 <br /> 02/27/2006 - 4236 2587 - - Well inaccessible <br /> 03/06/2006 P 4232 2583 <50 <0 50 <0 50 <0 50 <0 50 <0 50 67 69 <br /> 0513012006 P 3964 2315 <60 <0 50 <0 50 <0 50 <0 50 <0 50 61 77 <br /> MW 8 09/14/2004 1646 4490 -2844 25 000 420 <250 <250 <250 20 000 060 - Well inaccessible <br /> 6125/2001 3810 -2164 NS NS NS NS NS NS Notsampled <br /> 6/28/2001 164 - - 1 600 - <br /> 6/2812001 P 1646 3823 2177 <5000[6] 2 300 <50[6] <50[6] <50[6] 1,600[2] <br /> 9/1412001 - 164 - - - - 7 500 <br /> 911412001 P 1646 3963 2317 <2 000[7] 980[7] <20[7] <20[7] <20[7] 7 500[2] <br /> 12/14/2001 164 - - - - - - 17 000 <br /> 1 211 4120 01 P 1646 4072 -2426 29 000[8][9] 18 000[9] 640[9] 120[9] 470[9] 17,000[2] <br /> 2/21/2002 164 - - - 22 000 - <br /> 2/21/2002 P 1646 4039 -2393 30 000 15 000 <200 <200 <200 22 000(2] - <br /> 12l0912004 P 4577 2931 13 000 1 400 <500 <500 <500 23 000 27 70 <br /> 03/16/2005 P 4467 2821 27 000 600 <100 <100 <100 23 000 080 69 <br /> i <br /> 06/08/2005 P 4295 2649 <25,000 <250 <250 <250 <250 18 000 18 64 <br /> 09/08/2005 P 4330 2664 6 900 <50 <50 <50 <50 9 500 19 70 <br /> 1 2/0 81200 5 P 4384 -2738 <5 000 <50 <50 <50 <50 4 100 19 66 <br /> 02/2712006 - 4239 -2593 - - - - - Well inaccessible <br /> 03/06/2006 P 4229 -2583 <5 000 <50 <50 <50 <50 4,000 18 61 <br /> 0513012006 P 1 3952 -23 05 1 3,500 <25 <25 <26 <25 4,000 070 70 <br /> 5469-Table 1 As Page 7 of 9 SECOR <br />