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Table 1. Summary of Groundwater Monitoring Data: Water Elevations and Analyses <br /> ARCO Facility 2133, Stockton, California <br /> I op-of-casmg Depth-to- Product Water-level Change since Concentrations in I L <br /> Well number elevation, feet water, thickness, elevation, last measurement, Total <br /> and date above mcan sea level In feet in feet in feet(a) in feet Benzene Toluene Eth lbenzene Xylenes TPH-G M I BE <br /> 1/27/93 1499 -1434 3 32 <0 5 <0 5 <0 5 <0 5 <50 <br /> 4/29/93 13 19 -- -1254 1 80 <0 5 <0 5 <0 5 <0 5 <50 <br /> 8/5193 1477 -- -14 12 -1 58 <0 5 <0 5 <0 5 <0 5 <50 <br /> 11/10/93 14 83 -- -14 18 -006 <0 5 <0 5 <0 5 <0 5 <50 <br /> 3121/94 1430 -- -13 65 053 <0 3 <0 3 <0 3 <0 5 <10 - <br /> 6/27/94 1422 -- -13 57 008 <0 3 <0 3 <0 3 <0 5 <10 <br /> 9/29/94 15 4 I -- -1476 -1 19 <0 5 <0 5 <0 5 <0 5 <50 <br /> 12/8/94 1506 -1441 035 <0 5 <0 5 <0 5 <0 5 <50 <br /> 3/8195 1255 -- -1190 251 <0 5 <0 5 <0 5 <0 5 <50 <br /> 6/l/95 1 109 -- -1044 1 46 <0 5 <0 5 <0 5 <0 5 <50 <br /> 9/11195 1326 -- -1261 -2 17 <0 5 <0 5 <0 5 <0 5 <50 <br /> 1215195 13 64 -- -1299 -038 <br /> 3/18/96 845 -7 80 5 19 <0 5 <0 5 <0 5 <0 5 <50 - <br /> 6118195 945 -- -880 -1 00 -- -- <br /> 9/25/96 11 83 -- -11 18 -238 <0 5 <0 5 <0 5 <0-5 <50 <5 <br /> BHD-1 058 <br /> 8/26/88 -- -- -- 6050 220 2000 1000 <br /> 11/28/88 -- -- -- 1870 <100 480 100 -- -- <br /> 2/27/89 -- <br /> 5/30/89 -- -- -- -- 2900 120 870 780 -- -- <br /> 8/22/89 -- -- -- -- 1450 300 890 1170 -_ <br /> 12/4189 -- -- -- 1400 170 1600 2800 --1/4/90 1570 -- -15 12 <br /> 2/l/90 1542 -- -1484 028 -- <br /> 2/15/90 15 39 -1481 0 03 -- -- -- -- -- <br /> 2/22/90 1622 -- -1564 -083 -- -- __ -- -_-_ <br /> 3/8/90 15 17 -- -1459 105 1250 50 1870 1360 - <br /> 4/5/90 1538 -- -1480 -0214/19/90 15 58 -- -1500 -020 -- <br /> 5/10/90 1592 -- -1534 -034 -- -- __ -- -' <br /> 5/24/90 1589 -- -15 31 003 -- -- -- '- -- <br /> 6/5/90 -- -- -- -- -- -- -- -- -- <br /> 3316\1 A131-I'SU 133Y''116 XI S <br />