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s s <br /> Table 1 P*f 34 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2133 <br /> 2908 Benjamin Holt Dr,Stockton,California <br /> Well Depth Product Groundwater Groundwater Total <br /> Date Elevation to Water thickness, Elevation Elevation change TPH-G Benzene Toluene Ethylbenzene Xylenes MTBE DO <br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) mgA <br /> E-5 8126188 2 45 _ _ _ _ _ 2,690 390 270 870 - - <br /> 11/28/88 - - - - - 580 140 110 420 -- - <br /> 2127/89 _ _ _ _ _ 1,770 200 200 1,400 -- - <br /> 5130189 - - - - - 2,430 36 260 1,670 - - <br /> 8122189 - - - -- - 3,110 130 240 1,720 - - <br /> 1214189 - - - - - 600 40 120 1,030 -- -- <br /> 114190 1751 - -1506 -- - - - - - -- - <br /> 211/90 1732 - -1487 019 -- - - - - - -- <br /> 2/15/90 1729 - -1484 003 - - - - - - - <br /> 222190 1907 - -1662 -178 -- - -- - - -- - <br /> 318190 1703 -- -1458 204 -- 272 39 4 978 532 -- - <br /> 4/5/90 1731 - -1486 -028 - - - - - -- -- <br /> 4/19/90 1726 - -1481 0 05 - - - _ _ _ _ <br /> 5110/90 1765 -- -1520 -039 - - - - - - -- <br /> 5124/90 1761 - -1516 0 04 - - - - - - - <br /> 6/5/90 17 57 -- -1512 0 04 - - - - - - - <br /> 6/19190 1849 - -1504 -092 - 2,150 30 200 780 - -- <br /> 7/12190 1837 - -1592 012 - - - - - - -- <br /> 8/16190 1865 - -1620 -028 - - - - - - - <br /> 9117190 1901 - -1656 -0 36 - - - - - - -- <br /> 9118190 1901 -- -1658 000 30,000 7,400 210 860 8,300 - - <br /> 10/11/90 1911 - -1666 -010 - - - - - - -- <br /> 1216190 1895 - -1650 016 - - - - - - - <br /> 2/14191 1862 - -1617 0 33 18,000 6,3D0 120 560 4,300 - - <br /> 2125/91 1859 - -1614 003 - - - - - -- - <br /> 4/23/91 1787 -- -1542 072 10,000 8,400 <0 50 270 680 - -- <br /> 7115/91 Dry - - - - - _ _ _ _ .. <br /> 1018191 Dry - - <br /> 1122192 1923 - -1678 - - - - - -- -- - <br /> 4122192 18 31 - -1586 092 28,000 4,300 130 560 1,700 - -- <br /> 7/29/92 1960 - -1715 -129 - - -- -- - - - <br /> 10/29/92 Dry _ - _ _ _ _ - <br /> 1127193 1690 -- -1445 - 26,000 4,000 110 470 800 - - <br /> 4/29193 1508 - -1263 1 82 41,000 6,300 110 920 2,200 -- -- <br /> 8/5/93 1680 - -1435 -172 26,000 4,700 <50 560 560 -- -- <br /> 11110/93 1719 -- -1474 -039 19,000 2,500 <50 380 690 -- -- <br /> 3/21/94 16 60 - -1415 059 13,000 1,700 40 300 650 - -- <br /> 6/27/94 1627 -- -1382 033 9,400 1,800 17 260 520 - - <br /> 9/'29/94 1723 -- -1478 -0 96 7,900 1,200 <20 200 330 - - <br /> 7G600-019-031GW Tables <br /> I � <br />