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• • Pa 5 of 33 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station 42133 <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-4 2115190 1714 -- -1481 002 -- - - - <br /> (cant) 2122190 1798 -- -1565 -084 -- -- -- <br /> 318190 1690 — -1457 108 244 18 2 101 193 <br /> 4/5/90 1720 — -1487 -030 - -- -- -- <br /> 4119/90 1721 -- -1488 -001 - -- -- <br /> 5/10/90 1754 -- -1521 -033 - - - <br /> 5/24/90 1749 -- -1516 005 - -- - - - <br /> 6/5/90 1742 -- -1509 007 -- <br /> 6/18/90 1829 -- -1596 -087 <br /> 7/12190 1825 -- -1592 004 - <br /> 8/16/90 1855 -- -1622 030 - -- -- <br /> 9/17/90 1890 -- -1657 -035 - -- - -- - <br /> 9119/90 1890 -- 1657 000 4,400 33 37 160 430 <br /> 10/11/90 1898 -- -1665 -008 - - - - <br /> 12/6/90 1882 -- -1649 016 - - - - -- <br /> 2/12/91 1848 -1615 034 3,200 750 9 73 270 - <br /> 2125/91 1843 -- -1610 005 - -- -- -- -- <br /> 4/23/91 1762 -- -1529 0 81 - <br /> 7/16/91 2030 -- -1797 -268 -- -- -- -- <br /> 10/8J91 2090 - -1857 -0 60 -- -- - - - <br /> 1/22192 1901 -- -1668 189 8,500 1,100 140 10 220 <br /> 4/22!92 1805 -- -1572 096 6,300 730 12 110 200 <br /> 7/29192 1963 -- .1730 158 7,700 1,000 14 130 310 <br /> 10/29/92 1999 - -1766 -036 5,600 1,300 16 130 180 <br /> 1127/93 1672 — -1439 327 10,000 470 26 130 270 <br /> 4/29/93 1494 -- -1261 178 14,000 1,300 22 280 520 <br /> 8/5/93 1663 -- -1430 -169 9,400 900 X20 160 240 <br /> 11/10/93 1692 -- -1459 -029 4,400 290 <20 67 130 <br /> 3/21/94 1639 -- -1406 0 53 5,400 340 24 110 220 -- - <br /> 6/27/94 1614 -- -1381 025 7,800 790 11 170 470 <br /> 9129194 1706 -- -1473 -092 1,600 130 a0 5 33 41 <br /> 12/8194 1665 -- -1432 041 5,200 940 88 170 380 <br /> 3/8/95 1419 -- -11 86 246 7,900 490 56 130 190 <br /> 6/1/95 1274 -- -1041 145 15,000 1,000 10 360 380 <br /> 9/11/95 1496 -- -1263 -222 10,000 1,000 <10 350 320 - <br /> 12J5195 1523 - -1290 -027 - -- - -- -- -- <br /> Projects/ARCO/2133/Reportw7ables/gwtables2133 As <br />