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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 msl) (feet bgs) (feet msl) (ug/L) (pg/L) (pg/L) (Pg/L) (pg/L) (/rg/L) (/.g/L) (mg/L) Comments
<br /> VW-5D 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 29.65 3,200 - <100 <100 220 3,200 <100 INo 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 /> 03/11/2004 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 /> 08/03/2004 •- -- -- -- Not Sampled
<br /> 12122/2004 -- -- -- -- - -- -- -- Well dry,Not Sampled
<br /> 03/29/2005 P 29.25 26,000 -- 260 350 1,300 11,000 <50[2] 1.03
<br /> 06/16/2005 P - 28.54 18,000 57 40 220 4,200 <10[2] 0.63
<br /> 09/09/2005 P — 30.76 — 6,400 -- 35 <10 28 1,400 <10[2] 0.29
<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 /> 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 /> 3/28/2000 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 /> 12/18/2000 - 11.48 - -- No FP, No S,No O Not
<br /> scheduled for sampling
<br /> 3/14/2001 No FP, No S,No O Not
<br /> scheduled for sampling
<br /> Report pate:November 17,2005 Page 15 of 17
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