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0 Tabl* Pagel*540 <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 EthyEbenzene Xylenes MTBE DO <br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) mg/I <br /> 9/17/1990 1890 -16 57 -035 - - <br /> E 4 9/19/1990 18 90 - 1657 000 4,400 33 37 160 430 <br /> (cont) 10/11/1990 1898 -1665 -008 - <br /> 12/6/1990 1882 -- -1649 016 -- <br /> 2/12/1991 1848 -1615 034 3,200 750 9 73 270 <br /> 2/25/1991 1843 - -1610 005 - - - <br /> 4/23/1991 1762 -1529 081 - - <br /> 7/16/91 2030 -- -1797 -268 - - <br /> t 0/8/1991 2090 -- 1857 060 - <br /> 1/22/1992 1901 - 1668 1 89 8 500 1,100 140 10 220 <br /> 4/22/1992 1805 - -1572 0 96 6,300 730 12 110 200 <br /> 7/29/1992 19 63 -1730 1 58 7,700 1 000 14 130 310 <br /> 10/29/1992 1999 -1766 0 36 5,600 1,300 16 130 180 <br /> 1/27/1993 1672 -- -1439 327 10,000 470 26 130 270 <br /> 4/29/1993 1494 -1261 1 78 14,000 1,300 22 280 520 <br /> 8/5/1993 1663 -1430 -1 69 9,400 900 <20 160 240 <br /> 11/10/1993 1692 - -1459 029 4,400 290 <20 67 130 <br /> 3/21/1994 1639 -- -1406 0 53 5,400 340 24 110 220 <br /> 6/27/1994 1614 -- -1381 0 25 7,800 790 11 170 470 <br /> 9/29/1994 1706 -- -1473 -092 1,600 130 <0 5 33 41 <br /> 12/8/1994 1665 - -1432 0 41 5,200 940 88 170 380 <br /> 3/8/1995 1419 -- -1186 246 7,900 490 5 6 130 190 <br /> 6/1/1995 1274 -1041 145 15,000 1,000 10 360 380 <br /> 9/11/1995 1496 -- 1263 -222 10,000 1,000 <10 350 320 <br /> 12/5/1995 1523 -- -1290 -027 -- - <br /> 3/18/1996 1010 -- -777 513 4,700 530 35 250 350 <br /> 6/18/1996 '1103 -870 0 93 - - <br /> 9/25/1996 1347 - -11 14 244 7 600 890 <10 380 190 <5 <br /> 12/4/1996 1294 -1061 0 53 - - <br /> 3/19/1997 NP 743 -510 551 1,600 120 8 4 38 <5 02 <br /> 6/5/1997 1008 -- -775 -265 - - 01 <br /> 8/19/1997 NP 1157 -924 -149 1,800 83 7 8 63 7 6 110 01 <br /> 11/25/1997 P 1127 -894 030 - <br /> 3/19/1998 NP 547 - -314 580 110 3 6 <0 50 <0 50 <0 50 14 3 6 <br /> 6/24/1998 7 53 -- -520 -205 - <br /> 9/10/1998 NP 920 -687 -167 97 2 3 35 <0 50 <0 50 <0 50 815 <br /> 12/17/1998 929 -- 696 -009 - - <br /> 3/10/1999 NP 7 07 -474 222 <50 <0 50 <0 50 <0 50 <0 50 <5 0 3 0 <br />