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i • i <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station #2133 <br /> 2908 Benjamin Holt Drive <br /> Stockton, California <br /> Well Depth Product Groundwater Groundwater Ethyl- Xylenes <br /> Well Date Elevation to Water Thickness Elevation Elevation TPHg Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) (ft) (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> MW-1 3/2101 P 665 -- -536 191 <50 0 <0 500 <0 500 <0 500 <0 500 <250 46 <br /> (cont) 5/10/01 665 - -536 000 -- -- - -- -- -- 23 <br /> 8/22/01 P 910 -781 -245 <50 <0 50 <050 <0 50 <0 50 16 -- <br /> 12/5/01 858 -729 052 - -- -- -- -- -- " <br /> 3/12102 P 680 -551 178 <50 <0 50 <0 50 <0 50 <0 50 <2 5 1 11 <br /> 616102 770 - -641 -090 -- -- -- -- -- -- 014 <br /> 9124102 P 945 -816 -175 <50 <0 50 <0 50 <0 50 <0 50 37 028 <br /> 12/17/02 803 -- -674 142 — — — — -- — -- <br /> MW-2 11/10/93 288 1689 -1401 -- 950 67 72 66 120 <br /> 3121194 1644 -1356 045 450 100 62 16 83 <br /> 6/27/94 1629 -1341 015 390 55 13 96 72 <br /> 9/29/94 -- -- - -- -- -- -- -- <br /> 12/8/94 1543 - -1255 -- 580 29 27 62 130 <br /> 3/8/95 254 1297 -1009 246 3,800 180 42 89 370 <br /> 6/1/95 -- - -- - -- -- -- -- -- <br /> 9/11/95 1374 -1120 -- 4,100 290 51 140 170 <br /> 1215/95 115 1410 - -1295 -175 -- -- -- -- " <br /> 3118/96 860 -745 550 4 800 250 18 56 280 - - <br /> 6/18195 961 -- -846 101 -- -- -- -- -" - - <br /> 9/25/96 1220 -1105 -259 120 27 <0 5 3 18 <5 <br /> 12/4/96 1178 -1063 042 -- -- -- -- -- - -- <br /> 3/19/97 P 733 -618 445 510 17 089 31 44 0 3 <br /> 6/5/97 P 883 768 1 50 -- -- -- -- -- - 04 <br /> 8/19/97 NP 1033 -9 18 -1 50 2,400 17 <5 <5 260 <50 03 <br /> 11/25/97 P 1054 -939 021 -- - - - -- -- -- <br /> 3/19/98 P 427 -312 627 310 36 <0 5 24 <0 5 <5 55 <br /> 6124/98 641 - -526 -214 -- - -- -- -- "" <br /> 9110/98 P 804 -- -689 -163 157 0 783 <0 5 <0 5 0 604 <5 - <br /> 12/17/98 812 -697 008 -- -- -- -- -- -- <br /> 3/10/99 P 595 -480 217 <50 <0 5 <05 <0 5 <0 5 <5 64 <br /> 6/22/99 798 -683 -203 -- -- -- -- - -- 41 <br /> 9/13/99 NP 962 -847 -164 <50 <0 5 <05 <0 5 <05 <5 1 5 <br /> 12/15/99 954 -839 008 -- -- -- -- -- -- 0 6 <br /> Prolects/ARCO/2133/Reportsrrables/gwtables2133 As 34 <br />