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� • s <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 TPI-Ig Benzene Toluene benzene (total) MtBE Do <br /> Number Sampled (ft,MSL) (ft,TOC) (ft) (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg1L) <br /> BHD-1 9/18/1990 1724 -- -1666 000 2,000 110 9 30 650 <br /> (cont) 10/11/1990 1731 -1673 -007 - - - - <br /> 12/6/1990 1724 -- -1666 007 - - - <br /> 2/11/1991 1692 -1634 032 6,000 890 60 1,000 360 <br /> 2/25/1991 1686 -1628 006 -- -- -- - <br /> 4/23/1991 1599 - -1541 087 3,300 240 48 440 130 <br /> 7/16/91 1800 -1742 -201 7,000 420 420 400 830 <br /> 10/8/1991 1850 -- -1792 -050 3,000 220 <40 210 15 <br /> 1/22/1992 1712 -- -1654 138 4,600 200 240 <10 260 <br /> 4/2211992 1639 -- -1581 073 3,000 130 67 200 120 <br /> 7/29/1992 1793 - -1735 -154 8,100 260 21 600 510 <br /> 10/29/1992 1835 -1777 -042 1,800 80 <2 5 110 17 <br /> 1/27/1993 1527 -- 1469 308 6,700 270 19 790 300 <br /> 4/29/1993 1336 -- -1278 191 7,000 340 <20 610 460 <br /> 8/5/1993 1485 - -1427 149 10,000 280 31 930 950 <br /> 11/10/1993 1523 -- -1465 -038 10,000 220 11 570 420 <br /> 3/21/1994 1436 -1378 087 8,600 83 14 480 360 <br /> 6/27/1994 1430 -- -1372 006 9,600 110 32 490 420 <br /> 9/29/1994 1546 -1488 -1 16 7,200 170 12 460 340 <br /> 1218/1894 1499 -- -1441 047 8,200 160 14 560 640 <br /> 3/8/1995 1281 -- -1223 218 6,000 84 62 300 97 <br /> 6/1/1995 1129 - -1071 152 7,100 97 <5 370 250 <br /> 9/11/1995 1321 -1263 192 5,600 110 6 340 270 <br /> 12/5/1995 1370 - -1312 -049 9,200 74 <10 470 410 - <br /> 3/18/1996 938 - -880 432 4,200 99 28 360 320 <br /> 6/18/1996 950 - -892 012 5,500 82 <10 430 300 <100 - <br /> 9/25/1996 11 80 -- -1122 -230 4,600 75 55 280 160 <50 <br /> 12/4/1996 11 50 -1092 030 4,500 83 11 350 220 <50 <br /> 3/19/1997 P 702 -644 448 2,300 54 <10 190 100 01 <br /> 6/5/1997 NP 838 780 -136 3,500 39 3 76 12 170 0 2 <br /> 8/19/1997 NP 998 - -940 -160 440 79 094 <0 5 <0 5 360 02 <br /> 11/25/1997 NP 1042 - -984 -044 1,300 28 085 79 28 220 <br /> 3/20/1998 P 445 -- -387 597 490 34 3 37 24 210 54 <br /> 6/24/1998 P 592 - -534 -147 5,500 37 <10 170 46 580 3 0 <br /> Prolects/ARCO/2133/Reports/Tables/gwtables2133 xis 30 <br />