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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 2186 <br /> 3212 N California 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) (pg/L) (1rg/L) (pg/L) (gg1L) (pg/L) WIL) (mg/L) comments <br /> VW-28 3/14/2002 -- 1492 4020 -2528 <50 -- <0 50 <0 50 <0 50 <0 50 320[4] -- No FP,No S <br /> 6/19/2002 -- 1492 4243 -2751 <50 -- <0 50 <0 50 <0 50 <0 50 320[4] -- No FP,No S <br /> 9/12/2002 -- 1492 4931 -3439 400 — <2 5 <25 <2 5 <2 5 210 - No FP,No S <br /> 12!312002 -- 1492 4643 -3151 <500 <50 <50 <5 0 <50 98 - No FP,No S <br /> 03/11/2003 P 1492 4636 -3144 <1,000 -- <10 <10 <10 <10 530[4] 101 <br /> 06/09/2003 P 1492 4315 -2823 <250 — <2 5 <2 5 <2 5 <2 5 810[4] 296 <br /> 09/17/2003 P 1492 5132 -3640 150 R -- <50 <50 <50 <50 90[4] 1 96 <br /> 12/11/2003 P 1492 4621 -3129 120 R - <2 5 <2 5 <2 5 <2 5 170[4] — <br /> 03/10/2004 P 1492 46,§1 -3159 <50 - <0 50 <0 50 <0 50 <0 50 <0 50[4] 151 <br /> 06/17/2004 P 1489 4813 -3324 71 - <2 5 <2 5 <2 5- <2 5 210[4] 090 <br /> 09/23/2004 P 1489 5425 -3936 220 88 16 15 35 79[4] 120 _ <br /> 12/21/2004 P 1489 4880 -3391 1,300 — 16 120 <12 320 460[4] 029 <br /> 03/30/2005 P 1489 4510 -3021 120 <10 <1 0 <1 0 <1 0 43[4] 334 <br /> 06/13/2005 P 1489 4300 -2811 <50 — <050 <0 50 <0 50 <0 50 17[4] 376 <br /> 09/08/2005 P 14 89 1 4895 1 -3406 1 78 — <0 50 1 3 1 35 1 60 1 52[4] 1 332 r <br /> VW-3A 10/19/2000 -- 1502 3600 -2098 NS NS NS NS NS NS — No FP,No S <br /> 12/20/2000 - 1502 3605 -2103 NS -- NS NS NS NS NS -- No FP,No S <br /> 3/16/2001 - 1502 3600 -2098 NS - NS NS NS NS NS — No FP,No S <br /> 6/21/2001 1502 3604 -21 02 NS - NS NS NS NS NS — No FP, No S <br /> 9/13/2001 -- 1502 3610 -2108 NS -- NS NS NS NS NS - No FP,No S <br /> 12/11/2001 1502 3585 -2083 NS -- NS NS NS NS NS — No FP,No S <br /> 3/14/2002 — 1502 3589 -2087 NS — NS NS NS NS NS — No FP,No S <br /> 6/19/2002 — 1502 3590 -2088 NS - NS NS NS NS NS No FP,No S <br /> 9/12/2002 1502 -- -- NS -- NS NS NS NS NS — No FP,No S <br /> 12/3/2002 -- 1502 3585 -2083 NS NS NS NS NS NS -- No FP,No S <br /> 03/11/2003 1502 -- -- - -- -- — -- -- Not Sampled <br /> 06/09/2003 -- 1502 -- — — — - — - — Well Dry <br /> 09/17/2003 1502 — -- -- -- - -- -- -- -- -- Well Dry <br /> 12/11/2003 - 1502 — — -- -- - -- - — — -- Not Sampled <br /> 03/10/2004 — 1502 — — -- -- -- - -- -- -- -- Not Sampled <br /> 06/17/2004 - 1399 — -- -- - -- -- -- -- -- Not Sampled,Well Dry <br /> 09/23/2004 -- 1399 -- — — - — - - Not Sampled,Well Dry <br /> Report Date October 17,2005 Page 10 of 13 <br />