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Table 2 <br /> Groundwater Elevation and Analytical Data(ARCO) <br /> ARCO Service Station#2133 <br /> 2908 Benjamin Holt Drive <br /> Stockton California <br /> Well Depth Product Groundwater Groundwater Ethyl- Xylenes <br /> Well Date Elevation to Water Thickness Elevation Elevation TPHg Benzene Toluene benzene (total) MtBE DO <br /> Plumber Sampled (ft,MSL) (ft,TOC) (ft) (ft,MSL) Change(ft) (ug1l) (ugA) (ugA) (ug/1) (ugA) (ugA) (mgA-) <br /> BHD 1 8126/88 058 -- 6 050 220 2000 1 000 <br /> 11/28/88 - 1870 <100 480 100 <br /> W7189 <br /> 5130189 -- 2,900 120 870 780 <br /> 8122189 - 1,450 300 890 1170 <br /> 12/4189 1 400 170 1 600 2 800 <br /> 114190 1570 1512 - <br /> 211/90 1542 1484 028 <br /> 2/15!90 1539 1481 003 <br /> 2/22190 1622 1564 083 - <br /> 318/90 1517 - 1459 1 05 - 1,250 50 1,870 1,360 <br /> 4/5/90 1538 1480 021 - - <br /> 4119/90 15 58 1500 020 <br /> 5110190 1592 15 34 034 <br /> 5124190 1589 1531 003 - <br /> 6/5/90 <br /> 6118/90 1637 1679 1180 40 2070 860 <br /> 7112!90 1660 1602 023 - <br /> 8/16/90 1789 1731 129 - <br /> 9117190 1724 1666 065 <br /> 9118190 1724 -1666 000 2,000 110 9 30 650 <br /> 10/11190 1731 1673 007 - - - - <br /> 12/6/90 1724 -1666 007 <br /> 2111191 1692 - 1634 032 6 000 890 60 1,000 360 - <br /> 2/25/91 1686 1628 0 06 - <br /> 4/23/91 1599 1541 087 3,300 240 4 8 440 130 - <br /> 7116/91 1800 1742 201 7 000 420 420 400 830 <br /> 1016/91 18 50 1792 050 3 000 220 <4 0 210 15 <br /> 1122192 1712 1654 1 38 4 600 200 240 <10 260 <br /> 4122/92 16 39 1581 073 3 000 130 67 200 120 <br /> 7129192 1793 -1735 154 8,100 260 21 600 510 <br /> 10/29/92 1835 1777 042 1,800 80 <2 5 110 17 <br /> 1127193 1527 -1469 308 6,700 270 19 790 300 - <br /> 4129/93 1336 1278 191 7 000 340 <20 610 460 <br /> 815/93 1485 1427 149 10 000 280 31 930 950 <br /> 11/10/93 1523 1465 038 10,000 220 11 570 420 <br /> I IProlectslARCOt21331Tableslg bles2133 Page 27 of 36 <br />