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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No. 548 <br /> 1612 W. Hammer Lane, Stockton, CA <br /> To <br /> Depth to Water Level Ethyl- Total <br /> Well Date PI Elevation Water €levation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) WIL) (pg/L) (NEIL) (pg/L) (pg/L) (jrg/L) (pg/L) (mg1L) Comments <br /> VW-513 6!17!2002 NP -- 27.67 — 3,300 -- 12 40 36 1,200 <2.5[2) -- No FP,No S,No O <br /> 919!2002 NP — 29.39 -- 3,100 — <5 <5 <5 870 <5 -- No FP.No S,No O <br /> 121412002 NP — 29.65 -- 3,200 <100 <100 220 3,200 <100 — No FP, No S, No 0 <br /> 03/03/2003 NP — 27.48 -- 1,400 — 7.0 11 23 480 <5.0[2) — <br /> 06103/2003 NP -- 27.28 — 650 — 7.2 2.6 J 1.5 210 0.0[2) — <br /> 09/18/2003 - - -- — — — - — -- -- -- — Well dry <br /> 12/08/2003 -- - — -- -- — -- -- -- -- - Muddy Bottom.Dry, Not <br /> Sampled <br /> 03!1112004 NP -- 26.81 — 25,000 — 170 260 880 9,100 <100[2] -- <br /> 05/03/2004 NP — 29.81 -- 6,100 — <50 <50 140 1,100 <50[2] <br /> 06/11/2004 — — 30.83 — 5,700 - <5.0 <5.0 15 350 <5.0[2) — <br /> 0810312004 -- — -- -- -- — -- -- -- -- — -- Not Sampted <br /> VW-5S 12/30/1998 -- -- -- -- — - -- -- — -- -- Inaccessible because of <br /> soil stockpiles <br /> 313111999 — -- -- — — -- -- — -- -- — -- No FP,Yes S,Yes O Not <br /> scheduled for sampling <br /> 6/28!1999 -- -- — — -- — - NM Not scheduled for <br /> sampling <br /> 9/10/1999 -- 14.63 — -- -- — — — — No FP,No S,No O Not <br /> scheduled for sampling <br /> 12/13/1999 -- 14.64 -- - - — -- -- — -- -- No FP,No S,No O Not <br /> scheduled for sampling <br /> 3!2812000 — -- 14.56 -- — — -- -- — No FP,No S,No O Not <br /> scheduled for sampling <br /> 612612000 — — - — -- — -- — — No FP,No S,No 0 Not <br /> scheduled for sampling <br /> 9128!2000 -- — -- -- -- — — -- — -- -- -- No FP,No S,No O Not <br /> scheduled for sampling <br /> 12118!2000 — - 11.48 — — — -- — — — — No FP,No S,No O Not <br /> scheduled for sampling <br /> 3/14/2001 — -- 10.44 - - — - — — - — - No FP,No S,No O Not <br /> scheduled for sampling <br /> 6/19/2001 — — 14.23 -- -- — — -- — -- — No FP,No S,No O Not <br /> scheduled for sampling <br /> 9!11/2001 — -- 13.87 -- — -- — — — — No FP, No S,No O Not <br /> scheduled for sampling <br /> Page 13 of 15 <br /> Report Date:August 13,2004 <br />