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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 TPNg TPNd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pglL) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (mg/L) Comments <br /> VW-1 B 12/11/2001 — 1460 4300 -2840 200[7] -- 69 2 2 8 1,700[4] -- No FP,No S <br /> 3/14/2002 -- 1460 3993 -2533 <50 — <0 50 <0 50 <0 50 <050 63[4] No FP, No S <br /> 6/19/2002 — 1460 4217 -2757 190(7] -- <0 50 <0 50 <0 50 <0 50 320141 _ No FP No S <br /> 9/12/2002 -- 1460 4905 -3445 1,200 -- <10 <10 <10 <10 590 INo FP,No S <br /> 12/3/2002 -- 14 60 4615 -3155 <1,000 -- <10 <10 <10 24 260 INo FP,No S <br /> 03/11/2003 P 1460 1681 -221 <5,000 -- <50 <50 <50 <50 2,400[4]J 096 <br /> 06/09/2003 P 1460 4362 -2902 <250 -- <2 5 <2 5 <2 5 <2 5 860[4] 29 <br /> 09/17/2003 P 1460 51 13 -3653 240 R -- <12 <12 <12 <12 540[4] 158 <br /> 12111/2003 P 1460 4670 -3210 85 R — <50 <50 <50 <50 130[4] -- <br /> 03/10/2004 P 1460 4695 -3235 640 — <50 <50 <50 <50 2,000[41 166 <br /> 06/17/2004 P 1459 4792 -3333 160 — <10 <10 <10 <10 620[4] 1 9 <br /> 09/23/2004 P 14 59 5420 -3961 510 - 89 <50 79 16 36014] 1 0 <br /> 12/21/2004 P 1459 4860 -3401 800 — <50 <50 <50 1 <50 2,000[4] 115 <br /> 03/30/2005 P 1459 4457 -2998 <50 -- <0 50 <0 50 <0 50 <050 15[41 297 <br /> VW-2A 10/19/2000 -- 1492 3622 -2130 NS — NS NS NS NS NS — No FP,No S <br /> 12/20/2000 -- 1492 3623 -2131 NS -- NS NS NS NS NS -- No FP,No S <br /> 3/16/2001 -- 1492 3624 -21 32 NS -- NS NS NS NS NS -- No FP, No S <br /> 6/21/2001 1492 3621 -21 29 NS -- NS NS NS NS NS -- No FP No S <br /> 9/13/2001 — 1492 3695 -2203 NS -- NS NS NS NS NS -- No FP,No S <br /> 12111/2001 1492 3695 -2203 NS — NS NS NS NS NS — No FP, No S <br /> 3/14/2002 - 1492 3694 -2202 NS — NS NS NS NS NS — No FP,No S <br /> 6/19/2002 -- 1492 3692 -2200 NS -- NS NS NS NS NS -- No FP,No S <br /> 9/12/2002 - 1492 -- -- NS -- NS NS NS NS NS -- No FP,No S <br /> 12/3/2002 -- 1492 — NS -- NS NS NS NS NS — No FP,No S <br /> 03/11/2003 1492 - -- — - - — -- -- -- Not Sampled <br /> 06/09/2003 — 1492 — - — .. _ _ _ — — Well Dry <br /> 09/17/2003 -- 1492 -- — -- — — -- -- — -- — Well Dry <br /> 12/11/2003 -- 1 1492 -- -- - - — — -- -- — Not Sampled <br /> 03/10/2004 -- 1492 — -- -- — — — — -- — Not Sampled <br /> 06/17/2004 -- 1487 -- — -- - — -- -- — — Not Sampled,Well Dry <br /> 09/23/2004 -- 1487 — - -- — — -- — — — -- Not Sampled,Well Dry <br /> 12/21/2004 -- 1487 — — -- — — — -- — -- Insuf fent Water, Not <br /> Sampled <br /> Report Date Apn!25,2005 Page 8 of 12 <br />