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Tat 1 Page t of 30 <br /> Groundwater Elevation and Anatytical 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-2 8/26/88 2 86 -- -- -- -- -- -- <br /> 11/28/88 <br /> 11/28/88 -- -- -- - -- 79 4 5 12 <br /> 2127/89 -- -- - -- - 300 7 8 99 476 <br /> 5/30/89 -- -- -- - 638 103 194 75 3 <br /> 8/22/89 -- -- - -- - 85 <25 <25 <25 <br /> 12/4/89 -- — -- -- 102 8 2 <0 6 53 <br /> 1/4/90 1790 -- -1504 -- -- - - - <br /> 2/1/90 1770 -- -1484 020 -- - <br /> 2/15/90 1767 -- -1481 003 - -- <br /> 2/22/90 1844 -- -1558 -0 77 - - -- <br /> 3/8/90 17 40 -- -1454 1 04 - 108 245 15 6 33 9 <br /> 415/90 1769 -- -1483 -029 -- -- <br /> 4/19/90 1772 -- -1486 -003 -- - <br /> 5/10/90 1803 -- -1517 -031 -- <br /> 5/24/90 1798 - -1510 007 -- <br /> 6/5190 1795 -- -1509 0 01 -- - -- <br /> 6/18190 1886 -- -1600 -091 63 6 6 6 3 8 8 <br /> 7/12/90 1876 -- -1590 0 10 - <br /> 8116190 1905 -- -1619 -029 <br /> 9/17190 1940 -- -1654 -0 35 -- -- - - <br /> 9/19/90 1940 -- -1654 000 2,000 10 19 80 200 <br /> 10/11/90 1949 -- -1663 -009 -- -- - -- <br /> 12/6/90 19 34 -- -1648 015 <br /> 2/11/91 1900 -- -1614 0 34 -- -- - <br /> 2/25191 1893 -1607 0 07 -- -- -- -- -- <br /> 4/23/91 1805 -- -1519 088 1,300 19 <0 5 1 2 1 8 <br /> 7/15/91 2075 -- -1789 -270 1,600 62 20 7 3 43 <br /> 1018191 2130 -1844 -055 2,200 55 <2 5 3 3 6 - <br /> 1/22/92 1947 -- -1661 1 83 2,400 41 14 22 47 <br /> 4/22/92 1862 -- -1576 0 85 1,200 37 2 2 3 7 6 <br /> 7/29/92 2007 - -1721 -1 45 1,800 45 4 5 9 3 4 7 <br /> 10/29/92 20 52 -- -1766 -045 540 12 <0 5 2 5 1 4 <br /> 1/27193 1723 -- -1437 329 1,900 47 9 4 75 7 0 - <br /> 4/29/93 1543 •• .1257 1 80 3,400 110 15 15 29 <br /> 8/5/93 1710 -- -1424 -167 2,300 45 <5 12 5 - <br /> 11/10/93 -- -- - -- -- -- <br /> 3/21/94 1680 -- -1394 -- 1,000 13 8 7 6 <br /> E-2 6127/94 1658 -1372 022 1,200 9 4 9 5 92 7 6 <br /> (cont) 9/29194 -- -- -- -- -- -- -- - - <br />