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S • Pag of 33 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2133 <br /> 2908 Benjamin Holt Dr,Stockton,CA <br /> Well Depth Product Groundwater Groundwater Xylenes <br /> Well Date Elevation to Water Thickness Elevation Elevation TPHg Benzene Toluene Ethylbenzene (total) MtBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) (ft] (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> E-8 4/23191 1639 -- -1542 166 310 9 3 <0 5 <0 5 0 87 <br /> (cont) 7/16/91 1889 — -1792 -250 200 18 <0 5 0 7 25 <br /> 10/8/91 19 46 -- -1849 -0 57 <50 7 8 <0 5 <0 5 0 61 <br /> 1122192 1769 -1672 177 250 2 8 0 6 21 <0 5 - <br /> 4/22/92 1671 -1574 0 98 1,200 93 <2 5 37 5 3 -- <br /> 7/29/92 1821 -- -1724 -150 690 81 13 5 7 6 <br /> 10/29/92 1862 -1765 -0 41 620 87 <0 7 7 1 6 7 <br /> 1/27193 1542 -- -1445 320 960 31 <1 1 9 18 - <br /> 4/29/93 1356 -1259 1 86 360 20 <4 2 2 2 17 <br /> 8/5/93 15 28 -1431 -172 320 12 <0 5 2 3 1 6 <br /> 11110M 1S62 -- -1465 -0 34 310 12 2 4 17 14 <br /> 3/21/94 1500 -- -1403 062 220 0 9 1 1 1 0 1 3 <br /> 6/27/94 1479 -- -1382 0 21 400 24 2 4 4 6 2 0 - <br /> 9/29/94 1576 -- -1479 -097 670 46 <0 5 8 9 <0 5 - <br /> 12/8194 15 37 — -1440 039 190 3 5 1 1 1 2 4 <br /> 3/8195 1293 -- -11 96 244 200 13 <0 5 2 9 <0 5 - <br /> 6/1/95 1146 -- -1049 147 650 26 1 8 5 15 - <br /> 9/11/95 1366 -- -1269 -2 20 370 7 4 <0 5 2 1 <0 5 - <br /> 1215/95 1400 -- -1303 -034 150 2 8 <0 5 1 1 <0 5 <br /> 3/18/96 905 - -808 4 95 2,000 19 <0 5 9 3 13 -- <br /> 6/18196 980 -- -8 83 -075 2,300 41 4 7 18 4 9 <5 -- <br /> 9/25/96 1228 -- -1 i 31 -248 2,000 31 <1 14 14 <10 <br /> 12/4/96 1173 - -1076 0 55 1,800 29 <5 15 <5 <50 -- <br /> 3/19/97 NP 714 -- -617 4 59 840 19 1 1 9 4 082 -- 01 <br /> 6/5/97 NP 882 -- -7 85 -1 68 900 i3 14 4 7 1 3 <5 0 2 <br /> 8/19/97 NP 1027 -- -930 -1 45 1,000 13 4 2 4 0 84 <5 0 2 <br /> 11/25/97 NP 1047 -- -9 50 -020 140 <0 5 <0 5 <0 5 <0 5 <5 -- <br /> 3/19/98 NP 419 -- -322 628 <50 <0 5 <0 5 <0 5 <0 5 <5 2 4 <br /> 6/24198 NP 6 22 -- -525 -203 <50 <0 5 <0 5 <05 <0 5 5 7 15 <br /> 9/10/98 NP 804 -- -7 07 -1 82 548 <0 5 <0 5 <0 5 <0 5 <5 -- <br /> 12/17/98 NP 804 -- -7 07 000 <50 <0 5 <0 5 <0 5 <0 5 205 <br /> 3/10/99 NP 583 -- -4 86 2 21 <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> 6/22/99 NP 776 -- -679 193 <50 0 519 <0 5 <0 5 <0 5 <5 2 7 <br /> 9/13/99 NP 9 51 - -854 -175 <50 <0 5 <0 5 <0 5 <0 5 <5 21 <br /> 12/16/99 NP 940 -- -843 011 <50 <0 5 <0 5 <0 5 <0 5 307 1 8 <br /> 3/23/00 NP 473 -- -376 467 <50 <0 5 <0 5 <0 5 <0 5 15 4 12 <br /> Projects/ARCO/2133/Reports/Tables/gwtab1es2133 As <br />