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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 1 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) (pg/L) (pg/L) (pg/L) (Erg1L) (lug/L) (mg/L) Comments
<br /> VW-3 6/26/2000 -- - 29.78 - - - - - - - - -- No FP,No S, No O Not
<br /> scheduled for sampling
<br /> 9/28/2000 -- 28.30 - - - - - - - - - No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 12/18/2000 - -- 26.08 -- - - -- - - - -- No FP,No S, No O Not
<br /> scheduled for sampling
<br /> 3/14/2001 - 24.20 -- - -- - - - - - No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 6/19/2001 - - 26.50 - _ - No FP,No 5, No O Not
<br /> scheduled for sampling
<br /> 9/11/2001 - -- 29.02 - -- - - -- - -- No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 12/13/2001 NP -- 28.35 -- 1,100 - 150 <5.0 7.6 16 16[2] -- No FP,No S,No O
<br />' 3/12/2002 NP -- 24.80 - <50 - <0.50 <0.50 <0.50 <0.50 0.72[2] - No FP,No S,No O
<br /> 6/17/2002 NP - 27.60 -- <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP,No 5,No O
<br /> 9/9/2002 NP - 29.45 - <50 -- 5.5 <0.5 <0.5 1.4 1.6 No FP,No S,No O
<br /> 12/4/2002 NP 30.69 - 610 - 19 1.9 <0.5 7.9 4.6 No FP,No S,No 0
<br /> 03/03/2003 NP - 28.51 -- 1,300 - 20 1.8 2.3 11 3.6[2] --
<br /> 06/03/2003 NP -- 28.55 - 83 - 4.3 <0.50 <0.50 <0.50 2.7[2] -
<br /> 09/18/2003 NP -- 32.07 - 630 - 32 <5.0 7.7 <5.0 <5.0[2] -
<br /> Z-Z_--I-Z„ 1 210 8/2 00 3 NP - 31.92 - 1,400 -- 48 <10 24 <10 <10[2]03111/2004 NP -- 28.31 - 1,000 -- 68 <10 50 <10 <10 --
<br /> VW-4 9/29/1998 NP -- 29.35 - 328 -- 1.71 <0.5 1.1 6.12 2,560 - No FP,No S,Yes O,[42]
<br /> 12/30/1998 NP -- 27.20 -- 97.2 - <0.5 0.562 <0.5 0.746 2,240 - No FP,No S,Yes O,[42]
<br /> 3/31/1999 -- - 25.81 -- -- - -- -- - - -- No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 6/28/1999 -- - 26.94 - -- - - -- - - -- - No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 9/10/1999 -- - 29.00 - -- -- - - - - -- No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 12/13/1999 -- - 28.12 - -- -- - - - - -- - No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 3/28/2000 - - 24.89 -- - - - -- - - - No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 6!2612000 -- - 29.88 -- -- - -- - - -- No FP,No S,No O Not
<br /> scheduled for sampling
<br /> i Report Date:May 17, 2004 Page 10 of 14
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