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i • • <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 2130 <br /> 7906 N EL Dorado Street, 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) (pglL) (pg/L) M/L) M/L) Wg/L) (pg/L) (pglL) (mg/L) Comments <br /> VW-4 03/08/2004 P — 3913 -- 1 200 — 36 <0 50 7 7 <050 4 6[2) 184 <br /> 06/24/2004 P — 4396 — <50 — <050 <0 50 <0 50 <0 50 <0 50[2] 2 44 Water levels taken on <br /> 6123104 <br /> 09/20/2004 P — 4813 — 110 — <0 50 <0 50 <0 50 <0 50 <0 50[2] 150 <br /> 12/20/2004 P — 4459 — 190 1 — <0 50 <050 a0 50 <0 50 <0 50[2] 240 <br /> 03/27/2005 P -- 4131 - 150 -- ---650 <0 50 <0 50 <0 50 <0 50[2] 160 <br /> 06/19120051 P -- 4183 220 J -- <0 50 <0 50 <050 <0 5o <0 50[2] 140 <br /> VW-5 12/19/2002 — -- t42 <br /> 11 — 110 — 4 1 1 076 075 6 0[2] -- <br /> 03/06/2003 P -- 61 — 570 30 065 <I&-- <10 51[2] 560 <br /> 06/11/2003 P -- 77 — <50 <0 50 <0 50 <0 50 <0 50 <0 50[2] 312 <br /> 09/24/2003 P — 80 — 110 — 091 <0 50 <0 50 <0 50 <0 50[2] — <br /> 12/10/2003 P — 41 15 — 260 — 12 <0 50 <0 50 <0 50 <0 50[2] <br /> 03/08/2004 P - 3967 -- 150 — 10 <0 50 <050 <0 50 <0 50[2] 308 <br /> 06/24/2004 NP -- 4468 110 -- <25 <2 5 <25 <2 5 <2 5[2] 157 Water levels taken on <br /> 6123/04 <br /> 09/20/2004 P — --48687 — 150 — <50 <50 <5 0 —<50 <5 0[2] 110 <br /> 12/21/2004 P 4515 - 380 - <25 <25 <2 5 <2 5 3 8[2] 070 Water Level Data 12/20/04 <br /> 03/27/2005 P 4207 - 150 - <50 <50 <5 0 <5 0 <5 0[2] 210 <br /> 06/19/2005 P -- 42 34 -- 130 J -- 23 J <0 50 <0 50 <0 50 3 4[2]J 1 30 <br /> VW-6 03/06/2003 -- — -- — — - <br /> 12/10/2003 — -- _ Well p <br /> 03/08/2004 — — — — _ _ Dry <br /> — -- — -- — Well Dry <br /> 06/23/2004 NP Well Dry,Not Sampled <br /> 09/20/2004 -- — — -- — - -- — -- -- Well Dry,Not Sampled <br /> 12/20/2004 -- — — — -. — — — — — Not Sampled,Well pry <br /> 03/28/2005 — — -- -- - _ ~ _ _ — -- — Well Dry,Not Sampled <br /> Ofi11912005 -- -- — — _ .. _ <br /> Dry <br /> VW-7 5/20/1997 — — 4505 -- 56 -- 0 6 <0 5 <0 5 08 4 — No FP,No S <br /> 9/1/1998 -- — 4163 — NA — NA NA NA NA NA — <br /> 12/2/1998 — — 3895 — NA -- NA NA NA NA NA <br /> 3/31/1999 — -- 3886 — NA — NA NA NA NA NA — <br /> 6/4/1999 -- -- 3663 — NA — NA NA NA NA NA <br /> Report Date July 27,2005 <br /> Page 19 of 23 <br />