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TabJW = <br /> Groundwater Monitoringand Analytical Results , <br /> Chevron Service Station#9-4275 <br /> 2905 West Benjamin Holt Drive <br /> Vertical Measurements are in feet Stockton,California Analytical results are in parts per billion(ppb) <br /> Well Ground Depth <br /> DATE Head Water To Notes TPH- Benzene Toluene Ethyl- Xylenes MTBE <br /> Elev Elev Water Gasoline Benzene <br /> MW-5(cont) <br /> 03/19/91 379 -- -- -- 6800 18 24 21 790 -- <br /> 07/18/91 379 -15 93 1972 - 7600 60 65 190 800 - <br /> 10/31/91 379 -1641 2020 -- 2600 44 24 64 310 <br /> 01/16/92 3 79 -15 81 1960 - 5400 120 72 250 1000 <br /> 01/16/92 3 79 -- -- Duplicate 4700 110 63 230 960 <br /> 03/11/92 3 79 -14 85 1864 -- -- -- -- -- -- <br /> 03/17/92 379 -1474 1853 -- 1100 37 13 52 170 <br /> 06/29/92 379 -1639 2018 -- 850 18 9 0 25 200 <br /> 12/10/92 379 -1699 2078 -- 1200 49 16 64 200 -- <br /> 02/04/93 379 -1523 1902 -- 1200 31 12 58 250 <br /> 05/18/93 379 -1295 1674 2000 58 10 170 190 <br /> 08/05/93 379 -1376 1755 -- 750 32 4 6 50 100 <br /> 11/09/93 379 -1449 18 28 -- 1400 29 3 8 46 190 <br /> 01/18/94 379 -13 98 1777 - 1200 31 4 8 75 180 <br /> 06/27/94 3 79 -1340 1719 150 6 2 ND 0 6 19 -- <br /> 01/18/94 3 79 -1468 1847 -- 1400 29 3 0 40 160 <br /> 01/18/94 379 -1437 18 16 -- 1000 19 3 7 28 130 <br /> 03/08/95 3 79 -1233 1612 -- 750 22 0 7 30 60 - <br /> 06/01/95 379 -1068 1447 -- 3600 110 13 240 390 <br /> 09/11/95 379 -1240 1619 -- 890 40 18 76 140 <br /> 12/05/95 3 79 -13 01 1680 -- 410 67 <0 5 11 43 - <br /> 03/18/96 3 79 -951 1330 -- 740 10 <0 5 38 66 -- <br /> 06/18/96 3 79 -917 1296 -- 7200 86 6 7 770 540 15 <br /> 09/24/96 3 79 -1100 1479 -- 12,000 74 5 0 760 1100 59 <br /> 12104/96 379 -1083 1462 1100 8 3 1 0 93 63 <5 0 <br /> 02/25/97 379 -663 1042 - 24,000 570 1400 1500 5300 <50 <br /> 05/06/97 379 -746 1125 -- 38,000 580 790 3000 12,000 <120 <br /> 09/29/97 379 -1030 1409 -- 15,000 300 <12 1500 1000 <120 <br /> 9-4275 xls/#386845 9 As of 06/13/00 <br />