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I <br /> I o <br /> I I � <br /> pe TABLE 4 <br /> HISTORICAL ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> EPA METHODS 8015NV8021 <br /> Former Chase Chevrolet (Ma(hson) Faculty <br /> ' 423 North Madison Street, Stockton, California <br /> (µgA) <br /> saw*I ocafim� >* to Tr1j 'I � <br /> watm <br /> ' MW-20B 08-12-98 1632 <50 710 520 NA <0 5 056 <05 <0 5 <br /> (50-55) 11-03-98 t7 62 <50 140 <250 <5 0 <0 5 <05 <05 <0 5 <br /> 02-02-99 l7 11 <50 120 <250 <5 0 <0 5 057 <0 5 <0 5 <br /> 05-05-99 16 15 140 190 <250 <5 0 65 21 53 25 <br /> ' 08-11-99 1680 54 <50 <250 <5 0 061 17 069 27 <br /> 1 11-09-99 1790 490 290 330 <5 0 063 <0 5 27 26 <br /> 02-08-00 1743 <50 210 <250 <5 0 <0 5 "<0 5 <0 5 <0 5 <br /> 05-10-00 1554 <50 190 <250 <5 0 <0 5 <0 5 <0 5 <0 5 <br /> 08-21-00 1664 <11 <50 <250 <5 0 <0 5 <0 5 <0 5 17 <br /> ' 11-28-00 1773 <50 61 <250 <5 0 <0 5 <0 5 <0 5 <0 5 <br /> 02-28-01 1703 <50 <50 <250 <5 0 <0 5 <0 5 <10 5 <0 5 <br /> 05-21-01 1704 <50 <50 <250 <5 0 <0 5 <0 5 <0 5 <0 5 <br /> 08-16-01 1796 <50 <50 <250 <5 0 <0 5 <0 5 <0 5 <0 5 <br /> ' 11-14-01 1891 <50 <50 <250 <5 0 <0 5 <0 5 <05 <05 <br /> 02-13-02 1797 <50 <50 <250 5 0 <0 5 <0 5 <0 5 <0 5 <br /> 05-16-02 1820 <50 <50 <250 --50 <0 5 <0 5 <0 5 <0 5 <br /> 0930-02 1935 NS NS NS NS NS NS NS NS ' <br /> y <br /> 1202-02 1983 NS NS N5 N5 NS NS NS NS <br /> MW-21B 08-12-98 1504 2,600 1,600 <250 NA 20 - 35 67 27 <br /> (48-53) 11-03-98 1644 2,200 1,600 320 <5 0 12 12 49 26 <br /> 02-02-99 15 87 1,300 1,200 <250 <5 0 80 <0 5 49 13 ' <br /> 05-05-99 1566 1,300 700 <250 <5 0 86 17 29 28 <br /> ' 08-11-99 1592 1,400 700 <250 <5 0 <'l 15 16 96 <br /> 11-09-99 1670 <50 <50 <250 <5 0 <0 5 <0 5 <0 5 <0 5 <br /> 02-08-00 15 67 800 460 330 60 24 <0 5 41 16 <br /> 05-10-00 1425 1,400 920 360 <5 0 <0 5 <0 5 1 1 63 4 <br /> 08-21-00 1425 1,200 1,100 <250 <5 0 <0 5 <0 5 1 1 056 <br /> 11-28-00 1612 730 360 <250 <5 0 <0 5 <0 5 11 39 ' <br /> 02-28-0 I 1575 650 270 <250 <5 0 <0 5 <0 5 058 <0 5 <br /> 05-21-01 1583 930 630 <250 <5 0 <0 5 r 05 057 <0 5 <br /> 08-16-01 1671 680 1,100 250 --50 <0 5 <0 5 <br /> 052 <0 5 <br /> 11-14-01 1775 860 420 <2`t �5 0 <0 5 <0 5 11 <0 5 <br /> 02-13-02 1670 700 620 <250 <20 <0 5 30 <0 5 <05 <br /> 05-16-02 1691 750 260 <250 <5 0 <0 5 <0 5 075 45 <br /> 09-30-02 1811 NS NS NS NS NS NS NS+ NS <br /> 12-02-02 1831 NS NS NS NS NS NS NS NS <br /> ' Notes <br /> µg/1 rntcrogruns per liter <br /> TPI3-g Total Petroleum Hydrocarbons quantified as gasoline <br /> TPHd Total Petroleum Hydrocarbons quantified as diesel <br /> ' TPH-mo Total Petroleum Hydrocarbons quantt$ed as motor oil <br /> NS Not sampled <br /> Nk Not analyzed <br /> Advanced GeoEnviromnental,[tie <br />