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TABLE 4 HISTORICAL ANALYTICAL RESULTS OF GROUND WATER SAMPLES EPA METHODS 8015NV8021 Former Chase Chevrolet (Madison)Facility 423 North Madison Street, Stockton, California ' (µdl) ' Location SampleDepth TPH-g, TPH-d IPH-ma MTBE Benzene Totuene Ethyt- Xylene Dale benzene s (screen) Water MW-18 11-20-95 2330 <50 <50 <250 <05 <0 5 <0 5 <0 5 (16-36) 02-08-96 2241 <50 <50 <250 ___ <05 <0 5 <0 5 <0 5 05-07-96 2072 <50 <50 <250 <50 <0 5 <0 5 <0 5 <0 5 08-07-96 2023 <50 <50 <250 <50 <0 5 <0 5 <0 5 <0 5 11-05-96 2091 <50 <50 <250 <5 0 <0 5 <0 5 <0 5 <0 5 02-04-97 1590 <50 <50 <250 <5 0 <0 5 <0 5 <0 5 <05 05-06-97 1828 <50 <50 <250 <50 <0 5 <0 5 <0 5 <0 5 08-05-97 1791 <50 <50 <250 <5 0 <0 5 <0 5 <0 5 <0 5 ' 11-04-97 1890 <50 76 <250 <5 0 <0 5 <0 5 <0 5 <05 02-04-98 1524 <50 <50 <250 <5 0 <0 5 <0 5 <0 5 <0 5 02-02-99 15 18 <50 <50 450 <5 0 <0 5 <0 5 <0 5 <0 5 02-08-00 1553 <50 <50 <250 <5 0 <0 5 <0 5 <0 5 <0 5 05-09-00 1375 - --- --- --- --- --- --- -- 0 -21-00 1466 »- — 111-28-00 1598 --- --- --- --- --- --- 02-28-01 --- --- --- --- 05-21-01 1517 <50 <50 <250 <5 0 <0 5 <0 5 <0 5 <0 5 • 0 111-14-01-16-01 --- --- -- --- --- --- --- --- - ' 02-13-02 --- --- --- 05-16-02 1622 <50 1 <50 <250 <5 0 <0 5 1 <0 5 <0 5 <0 5 1 MW-19A 08-12-98 1329 <50 780 460 --- <0 5 <0 5 <0 5 <0 5 (11-31) 11-03-98 1491 <50 180 <250 <5 0 <0 5 <0 5 <0 5 <0 5 02-02-99 1428 <50 310 <250 <5 0 <0 5 <0 5 <0 5 <0 5 05-05-99 1363 <50 140 <250 <5 0 <0 5 15 <0 5 19 08-11-99 1401 <50 <50 <250 <5 0 <0 5 092 078 32 11-09-99 1522 <50 170 <250 <5 0 <0 5 <0 5 <0 5 <0 5 02-08-00 1467 <50 140 <250 <5 0 <0 5 <0 5 <0 5 <0 5 05-09-00 1300 <50 180 320 <5 0 <0 5 <0 5 <0 5 <0 5 08-21-00 1385 <50 170 <250 <5 0 <0 5 <0 5 <0 5 <0 5 ' 11-28-00 15 15 <50 130 <250 <5 0 <0 5 <0 5 <0 5 <0 5 02-28-01 1446 <50 <50 <250 <5 0 <0 5 <0 5 <0 5 <0 5 05-21-01 1447 <50 74 <250 <5 0 <0 5 <0 5 <0 5 <0 5 09-16-01 1507 <50 71 <250 <5 0 <0 5 <0 5 <0 5 <0 5 11-14-01 1613 <50 52 <250 <5 0 <0 5 <0 5 <0 5 <0 5 I 02-13-02 1535 <50 <50 <250 <5 0 <0 5 ,<0,5 <0 5 <0 5 05-16-02 1542 <50 <50 <250 <5 0 <0 5 <0 5 <0 5 <0 5 MW-20A 08-12-98 1475 <50 92 450 --- <0 5 <0 5 <0 5 <0 5 ' (12-32) 11-03-98 1623 <50 200 <250 <5 0 <0 5 <0 5 <0 5 <0 5 02-02-99 1574 <50 170 <250 <5 0 <0 5 <0 5 <0 5 <0 5 05-05-99 1501 <50 130 <250 <5 0 <0 5 13 <0 5 19 08-11-99 1539 <50 <50 <250 <5 0 <0 5 <0 5 <0 5 055 11-0949 1663 3,200 3,900 480 <10 280 43 190 21 I 02-08-00 1610 <50 140 <250 <5 0 <0 5 <0 5 <0 5 <0 5 05-10-00 1441 <50 150 <250 <5 0 <0 5 <0 5 <0 5 <0 5 08-21-00 1525 <50 140 <250 <5 0 <0 5 <0 5 <0 5 <0 5 11-28-00 1657 <50 200 <250 <5 0 <0 5 <0 5 <0 5 <0 5 02-28-01 1589 <50 220 <250 <5 0 <0 5 <0 5 <0 5 <0 5 I 05-21-01 1583 <50 190 <250 <5 0 <0 5 <0 5 <0 5 <0 5 08-16-01 1644 <50 200 <250 <5 0 <0 5 <0 5 <0 5 <0 5 . 11-14-01 1755 <50 100 <250 <5 0 <0 5 <0 5 <0 5 <0 5 02-13-02 1678 <50 190 <250 <5 0 <0 5 <0 5 <0 5 <0 5 05-16-02 16 83 <50 110 <250 <5 0 <0 5 <0 5 <0 5 <0 5 Advanced GeoEnvironmental,Inc