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<br /> Table 1 Page 4 of 28
<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 /> t
<br /> Date Elevation to Water thickness, Elevation Elevation change TPH-G Benzene Toluene Ethylbenzene Xylenes MTBE
<br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb)
<br /> E-10 8126188 126 - - - _ _ _ _ _ - -
<br /> 11/28/88 - - - 2,780 5,240 690 3,570
<br /> 2127189 - -- -- -- - 2,970 3,020 750 5,030 -
<br /> 5/30/89 - -- -- - 5,520 5,760 1,060 6,900 --
<br /> 8122189 - - 2,590 3,220 570 5,200
<br /> 1214189 - -- -- -- - 1,300 1,200 400 3,200
<br /> 114190 1637 - -1511 -- - - - -- -- --
<br /> 211190 1614 -- -1488 023 - - - -
<br /> 2/15190 1612 -- -1486 002 - - - -- --
<br /> 2/22190 1690 - -1564 -078 -- _ -- _ _
<br /> 318190 1590 -- -1464 1 00 -- 339 606 268 1,480
<br /> 415/90 1606 - -1480 -016 -- - - - -
<br /> 4/19190 1620 - -1494 -014 - - - --
<br /> 5110/90 -- - -- - - - --
<br /> 5124190 1642 - -1516 - - - -
<br /> 615190 1640 -1514 002 - - - -- --
<br /> 6119190 1714 - -1588 -074 3,510 3,180 790 6,490
<br /> 7112190 1721 -- -1595 -007 -- - -- --
<br /> 8116190 1757 - -1631 -0 36 -- -- - -
<br /> 9117190 1782 -- -1656 -025 -- -- -- -
<br /> 9/19/90 1782 - -1656 000 20,000 36 39 <50 7,700
<br /> 10/11190 1794 -1668 -012 - -- -- -- - -
<br /> 1216190 1778 - -1652 016 -- -- -- -- -
<br /> 2112191 1747 -- -1621 0 31 7,800 1,100 730 320 3,600
<br /> 2125191 1741 -- -1615 006 - - - -- - -
<br /> 4123191 1656 -- -1530 085 8,200 670 180 200 750
<br /> 7116191 1911 - -1785 -2 55 9,400 850 230 210 1,100 --
<br /> 1018191 1960 -- -1834 -049 8 700 860 150 260 820 --
<br /> 1122192 1824 - -1698 136 32,000 3,200 800 3,600 3,600 -
<br /> 4/22192 1714 - -1588 1 10 26,000 2,800 1,300 880 3,400 -
<br /> 7129192 1862 - -1736 -1 48 42,000 3,400 1,100 1,400 6,400 -
<br /> 10/29192 1899 - -1773 -037 25,000 3,600 700 1,200 4,000 --
<br /> 1127193 1577 - -1451 322 31 000 2,500 540 1,100 3,100 -
<br /> 7G600-019-01/GW Tables
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