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' 1 , ' y h , 1 y I I 1 TABLE 5 ' HISTORICAL ANALYTICAL RESULTS OF GROUND WATER SAMPLES EPA METHODS 8015M/8021 Former Chase Chevrolet (Madison)Facility 423 North Madison Street, Stockton, California (µg/l) p „ p� Location Sample Depth TPH-g TPH-d TPH-mo MTBE Benzene Toluene Ethyl- Xylene " I screen Date Water benzene 1 ,I ' MW-11 10-5-95 2346 <50 <50 <250 NA <0 5 1057 <0 5 <05 (17-37) 02-08-96 2330 <50 <50 <250 NA <0 5 <05 <0 5 <05 ' 05-07-96 2145 <50 <50 <250 <5 0 <0 5 '!CO 5 <0 5 <0 5 08-07-96 2101- <50 <50 <2511 <5 0 <0 5 <05 <0 5 <0 5 11-05-96 21 62 <50 <50 <250 <50 <0 5 <05 <0 5 <0 5 02-04-97 1672 <50 100 <250 <5 0 <0 5 <05 <0 5 <0 5 ' 05-06-97 1883 <50 <50 <250 <50 <0 5 <0 5 <0 5 <05 08-05-97 1920 <50 <50 <250 <50 <0 5 <0 5 <0 5 <0 5 t 11-04-97 1953 <50 <50 <250 <50 <0 5 <0 5 <0 5 <0 5 02-04-98 1636 <50 <50 <250 <50 <05 <0 5 <0 5 <05 02-02-99 1596 <50 <50 <250 <50 <05 <0 5 <0 5 <05 02-08-00 1619 <50 <50 <250 <50 <05 <0 5 <0 5 <05 ' 05-09-00 1450 NS NS NS NS NS N5 NS NS 1 08-21-00 1529 NS NS NS NS NS NS NS NS 11-28-00 1655 NS NS NS NS NS NS NS NS 02-28-01 1599 NS NS NS NS NS NS NS NS 05-21 01 15 89 <50 <50 I <250 <50 <0 5 <0 5 <05 <0 5 ' 08-16 01 16 55 NS NS 1 NS NS NS NS NS NS 11-14-01 1763 NS NS NS NS NS NS NS NS 02-13-02 1083 NS NS NS NS NS NS NS NS 05-16-02 1686 <50 <50 <250 <5 0 <0 5 <0 5 <05 <05 f ' 09-30-02 1787 NS NS NS NS NS NS NS NS 12-02-02 1850 NS NS NS NS NS NS NS NS 02-21-03, 1785 NS NS NS NS NS NS NS NS 05-08-03 1790 <50 <50 <250 NA <0 5 <0 5 <05 <0 5 08-07-03 1870 NS NS NS NS NS NS NS NS Y ! ! , 1 y, I , 1 1 1 , 1 I 1 'I I , 1 ! 1 1 ` 1 1 1 y L1I Advanced GeoEnvironmental,[nc I !