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Pa9f 35 ; Table 1 Groundwater Elevation and Analytical Data ARCO Service Station#2133 2908 Benjamin Holt Dr,Stockton,CA Well Depth Product Groundwater Groundwater Xylenes Well Date Elevation to Water Thickness Elevation Elevation TPHg Benzene Toluene Ethylbenzene (total) MtBE DO Number Sampled (ft,MSL) (ft,TOC) (ft) (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) E-5 114/90 1751 -1506 (cont) 2/1/90 1732 - -1487 019 - - -- 2/15/90 1729 -1484 003 - 2/22/90 1907 -- -1662 -178 -- -. __ -- 318l90 1703 - -1458 204 -- 272 394 97 8 532 -- 4/5/90 1731 -1486 -028 .. -- - 4/19/90 1726 -1481 0 05 5/10/90 1765 -1520 -039 -- - - -- 5/24/90 1761 -- 1516 004 6/5/90 1757 1512 004 -- -- -- -- -- 6/19/90 1849 -- -1604 -092 2,150 30 200 760 7/12190 1837 -1592 012 -- -- .. 8/16/90 1865 - -1620 -028 -- 9/17/90 1901 -1656 -036 -- -- -- 9/18/90 1901 -1656 000 30,000 7,400 210 860 6,300 10/11/90 1911 - -1666 -010 -- -- -- 1216/90 1895 - -1650 016 -- -- -- - - - 2/14/91 1862 -1617 0 33 18,000 6,300 120 560 4,300 2/25/91 1859 -1614 003 -- _ .- 4/23191 1787 -1542 072 10,000 8,400 <0 50 270 680 7/15/91 dry .. 10/8/91 dry - -- 1/22/92 1122/92 19 23 - -1678 -- -- -- -- -- - - -- 4122192 1831 -1586 0 92 28,000 4,300 130 560 1,700 -- 7129/92 1960 -1715 -129 -- -- -_ .. 10/29/92 dry -- _- __ -- -- 1/27/93 1690 - -1445 -- 26,000 4,000 110 470 800 - 4/29/93 1508 -1263 182 41,000 6,300 110 920 2,200 8/5/93 1680 -1435 -172 26,000 4,700 <50 560 560 11/10/93 1719 -- -1474 -039 19,000 2,500 <50 380 690 -- 3121/94 16 60 -- -1415 059 13,000 1,700 40 300 650 6/27/94 1627 -- -1382 0 33 9,400 1,800 17 260 520 - 9/29/94 1723 -- -1478 -096 7,900 1,200 <20 200 330 12/8/94 1683 -- -1438 0 40 6,800 1,300 30 220 410 3/8/95 1434 -11 89 2 49 39,000 3,000 <50 460 1,4M -- 6/1195 1275 -1030 159 2,300 6 9 <2 5 11 53 -- I Projects/ARCO/2133/Reports/Tables/gwtables2133 As