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• Page 15 of 34 <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-9 12/6/90 1811 - -1655 013 -- -- -- _ .. <br /> (cont) 2/12/91 17 80 -- -1624 031 18,000 2,600 130 610 4,700 -- <br /> 2125/91 1876 - -1720 -096 -- _ __ -- <br /> 4/23/91 1689 -- -1533 187 -- -- -- — __ <br /> 7/15/91 dry -- - - - -- - -- - -- <br /> 10/8/91 dry -- -- -- — -- -- - <br /> 1/22/92 1824 -1668 -- - . -- -- <br /> 4/22/92 1745 -- -1589 079 3,600 170 10 50 120 -- <br /> 7/29192 dry -- -- -- -- -- -- -- -- -- <br /> 10/29/92 1719 -- -15 63 8,900 480 32 440 1,100 -- <br /> 1127/93 1610 - -1454 109 12,000 390 25 310 730 -- -- <br /> 4/29/93 1419 -1263 191 12,000 270 <98 150 380 -- <br /> 815/93 1583 -- -1427 -164 16,000 370 22 220 460 -- -. <br /> 11/10/93 1618 -- -1462 -035 12,000 210 21 200 390 -- -- <br /> 3/21/94 1551 -1395 0 67 6,300 170 24 200 320 <br /> 6/27194 15 34 -- -1378 017 10,000 780 18 660 980 -- <br /> 9/29/94 1636 -- -1480 102 8,800 430 14 470 630 -- -- <br /> 1218/94 1597 -- -1441 039 7,800 450 20 610 810 -- <br /> 318/95 1354 -- -1198 243 8,600 100 <20 230 260 <br /> 6/1195 1202 -- -1046 152 24,000 550 38 870 2,000 -- -- <br /> 9111/95 14 22 - -1266 -220 150,000 1,700 7,600 3,000 14,000 -- — <br /> 12/5/95 1458 -- -1302 -036 45,000 960 1,500 1,000 3,200 -- <br /> 3/18196 962 -- -806 4 96 8,800 290 130 240 490 -- — <br /> 6118/96 1035 -- -879 -073 1,600 110 32 69 91 110 -- <br /> 9/25/96 1282 -- -1126 -247 2,800 130 <5 180 46 83 -- <br /> 12/4/96 1220 -1064 062 2,800 290 32 250 80 560 -- <br /> 3/19/97 NP 772 -- -616 448 <50 <0 5 <0 5 <0 5 <0 5 <5 01 <br /> 615/97 NP 939 -- -7 83 -167 <50 <0 5 <0 5 <0 5 <0 5 8 5 02 <br /> 8/19197 NP 10 84 -928 -145 <50 <0 5 <0 5 <0 5 <0 5 <5 02 <br /> 11/25/97 NP 11 10 -- 954 -026 <50 <0 5 <0 5 <0 5 <0 5 <5 -- <br /> 3/19/98 P 480 -- -324 630 <50 <0 5 <0 5 <0 5 <0 5 320 0 9 <br /> 6/24198 NP 676 -- -520 -196 <50 <0 5 <0 5 <0 5 <0 5 <5 22 <br /> 9110198 NP 859 -703 -183 <50 <0 5 <0 5 <0 5 <0 5 <5 -- <br /> 12/17/98 NP 8 61 -705 -002 <50 <0 5 <0 5 <0 5 <0 5 150 -- <br /> 3/10199 NP 647 -- -4 91 214 <50 <0 5 <0 5 <0 5 <0 5 <5 37 <br /> 6/22199 NP 8 39 -683 -192 <50 <0 5 <0 5 <0 5 <0 5 <5 2 9 <br /> Projects/ARCO/2133/Report /Tables/gwtables2133 As <br />