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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 /> 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 ms[) (feet bgs) (feet msl) (pg/L) (pglL) (pg/L) (pglL) (pg/L) Cpg/L) (pglL) (mg/L) Comments
<br /> VW-5D 12/18/2000 — — -- — — - — - -- — -- — Yes FP,Yes S,Yes O
<br /> Not scheduled for
<br /> sampling
<br /> 3/14/2001 — -- 25.00 — -- — -- — - -- — Yes FP Not scheduled for
<br /> sampling
<br /> 6/19/2001 -- — 24.95 -- — — -- - — — — -- No FP,No S,Yes O Not
<br /> scheduled for sampling
<br /> 9/11/2001 -- — 28.00 - — -- -- — -- — — -- No FP,No S,Yes O Not
<br /> scheduled for sampling
<br /> 12/13/2001 NP — 28.42 -- 54,000 -- 840 2,300 1,100 17,000 67[2] -- No FP,No S,No O
<br /> 3/1212002 NP -- 25.65 — 1,400[3] — <5.0 8 <5.0 96 <2.5[2][5] -- No FP,No S,No O
<br /> 6/17/2002 NP — 27.67 — 3,300 -- 12 40 36 1,200 <2.5[2] — No FP,No S,No O
<br /> 9/9/2002 NP -- 29.39 -- 3,100 — <5 <5 <5 870 <5 -- No FP,No S,No O
<br /> 12/4/2002 NP I — 29.65 — 3,200 — <100 <100 220 3,200 <100 No FP, No S,No O
<br /> 03/03/2003 NP -- 27.48 - 1,400 -- 7.0 11 23 480 <5.0[2]
<br /> 06/03/2003 NP - 27.28 — 650 -- 7,2 2.6 J 1.5 210 <1.0[2] —
<br /> 09/18/2003 — - — — -- — -- — - — Well dry
<br /> 12/08/2003 -- -- -- __ _ _ _ _ _ _ _ -- Muddy Bottom,Dry, Not
<br /> Sampled
<br /> 2n 03111/2004 NP — 26.81 -- 25,000 — 170 260 880 9,100 5100 --
<br /> 05/03/2004 NP — 29.81 6,100 -- <50 <50 140 1,100 <50[2] —
<br /> VW-5S 12/30/1998 -- — -- -- -- — -- — -- -- — Inaccessible because of
<br /> soil stockpiles
<br /> 3/31/1999 — — - — — — _ _ _ _ .- No FP,Yes S,Yes O Not
<br /> scheduled for sampling
<br /> 6/28/1999 — -- -- — — -- -- — -- -- — — NM Not scheduled for
<br /> sampling
<br /> 911.019999 .- - 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 /> 3/28/2000 -- -- 14,56 — -- -- — — — - — No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 6/26/2000 — — -- — — — -- — -- - -- No FP,No S.No O Not
<br /> scheduled for sampling
<br /> 9/28/2000 — -- -- - — -- — -- — — — -- No FP,No S,No O Not
<br /> scheduled for sampling
<br /> Report Date:May 17, 2004 Page 12 of 14
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