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TablIP Pagof 30 <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 feel (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) mg/I <br /> 9/17/1990 1890 - -1657 -035 -- <br /> E 4 9/19/1990 18 90 - 1657 0 00 4,400 33 37 160 430 <br /> ;cont) 10/11/1990 1898 -1665 -0 08 - - <br /> 12/6/1990 1882 -- -1649 0 16 - - <br /> 2/12/1991 1848 - -1615 0 34 3,200 750 9 73 270 <br /> 2/25/1991 1843 - -1610 005 - - - - <br /> 4/23/1991 1762 - -1529 081 - - - <br /> 7/16/91 20 30 -1797 -2 68 - <br /> 10/8/1991 20 90 -- 1857 0 60 -- <br /> 1/22/1992 1901 -- 1668 1 89 8,500 1,100 140 10 220 <br /> 4/22/1992 1805 - 1672 0 96 6,300 730 12 110 200 <br /> 7129119922 1963 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 -169 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 025 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 -- 11 86 246 7,900 490 5 6 130 190 <br /> 6/1/1995 1274 -1041 1 45 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 670 -093 - - - <br /> 9/25/1996 1347 -- -11 14 -244 7,600 890 <10 380 190 <5 <br /> 12/4/1996 12 94 1061 063 - - <br /> 3/19/1997 NP 743 -510 551 1,600 120 8 4 38 <5 0 2 <br /> 6/5/1997 1008 - -775 265 - - 0 1 <br /> 8/19/1997 NP 1157 - -924 -1 49 1,800 83 7 8 6 3 7 6 110 01 <br /> 11/25/1997 P 1127 -- -894 030 - - <br /> 3/19/1998 NP 547 - -314 5 80 110 3 6 <0 50 <0 50 <0 50 14 3 6 <br /> 6/24/1998 753 -- -520 -206 - -- <br /> 911011998 <br /> - <br /> 911011998 NP 920 -- -687 167 972 335 <0 50 <0 50 <0 50 8 15 <br /> 12/17/1998 9 29 - 696 009 - - - <br /> 3/10/1999 NP 707 - 474 2 22 <50 <0 50 <0 50 <0 50 <0 50 <5 0 3 0 <br />