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• Tabo Page0of 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 feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) mgll <br /> 7/12/1990 1660 -- -1602 -023 <br /> 8/16/1990 1789 -1731 1 29 - - <br /> BHD 1 9/17/1990 1724 1666 0 65 <br /> (cont) 9/18/1990 1724 -1666 000 2,000 110 9 30 650 <br /> 10/11/1990 1731 -- -1673 007 <br /> 12/6/1990 1724 1666 0 07 - - <br /> 2/11/1991 1692 -1634 032 6 000 890 60 1 000 360 <br /> 2/25/1991 1686 -1628 006 - - - <br /> 4/23/1991 1599 -- -1541 0 87 3,300 240 4 8 440 130 <br /> 7/16191 1800 1742 201 7,000 420 420 400 830 <br /> 10/8/1991 1850 -- -1792 0 50 3,000 220 <4 0 210 15 <br /> 1/22/1992 1712 1654 1 38 4,600 200 240 <10 260 <br /> 4/22/1992 1639 -1581 073 3,000 130 6 7 200 120 <br /> 7/29/1992 1793 -- -1735 -1 54 8,100 260 21 600 510 <br /> 10/29/1992 1835 -1777 -042 1,800 80 <2 5 110 17 <br /> 1/27/1993 1527 -1469 308 6,700 270 19 790 300 <br /> 4/29/1993 1336 -- -1278 f 91 7,000 340 <20 610 460 <br /> 8/5/1993 1485 -- -1427 149 10,000 280 31 930 950 <br /> 11/10/1993 1523 -- -1465 -038 10,000 220 11 570 420 <br /> 3/21/1994 1436 -- -1378 0 87 8,600 83 14 480 360 <br /> 6/27/1994 1430 - -1372 006 9,600 110 32 490 420 <br /> 9/29/1994 1546 -- -1488 -1 16 7,200 170 12 460 340 <br /> 12/8/1994 14 99 -- -1441 047 8,200 160 14 560 640 <br /> 3/8/1995 1281 -1223 218 6 000 84 62 300 97 <br /> 6/1/1995 1129 -- -1071 152 7,100 97 <5 370 250 <br /> 9/11/1995 1321 -- 1263 -1 92 5,600 110 6 340 270 <br /> 12/5/1995 1370 -1312 049 9,200 74 <10 470 410 <br /> 3/18/1996 938 -- -880 4 32 4,200 99 28 360 320 <br /> 6/18/1996 9 50 892 -012 5,500 82 <10 430 300 <100 <br /> 9/25/1996 11 80 -- -11 22 -230 4,600 75 5 5 280 160 <50 <br /> 12/4/1996 11 50 - -10 92 0 30 4,500 83 11 350 220 <50 <br /> 3/19/1997 P 702 -- -6 44 4 48 2,300 54 <10 190 100 0 1 <br /> 6/5/1997 NP 838 - -780 136 3,500 39 3 76 12 170 0 2 <br /> 8/19/1997 NP 9 98 -940 1 60 440 7 9 0 94 <0 5 <0 5 360 0 2 <br /> 11/25/1997 NP 1042 -984 0 44 1,300 2 8 0 85 7 9 2 8 220 <br /> 3/20/1998 P 4 45 -- -387 5 97 490 34 3 37 24 210 5 4 <br /> 6/24/1998 P 5 92 - 534 -1 47 5,500 37 <10 170 46 580 3 0 <br /> 9/10/1998 NP 812 -754 220 349 319 <0 500 0 542 <0 500 567 <br />