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1 <br /> ' TABLE 4 <br /> HISTORICAL ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> ' EPA METHODS 8015M/8021 <br /> Former Chase Chevrolet (Madison) Facility <br /> 423 North Madison Street, Stockton, California <br /> ' (µg/l) <br /> ' Ethyl- <br /> Location le Sample <br /> Depth TPH-g TPH-dTPH-mo MTBE Benzene Toluene benzene Xylene <br /> (screen) Water <br /> MW-21B 08-12-98 15 04 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 11200 <250 <50 so <0 5 49 13 <br /> 05-05-99 15 66 1.,300 700 <250 <50 86 17 29 28 <br /> ' 08-11-99 15 82 1,400 1 700 <250 <5 0 <1 Is 16 8 6 <br /> 11-09-99 1670 <50 <50 <250 <50 <0 5 <05 <05 <0 5 <br /> 02-08-00 1567 800 460 330 60 24 <0 5 41 16 <br /> 05-10-00 1425 1,400 920 360 <50 <05 <0 5 1 1 6 3 <br /> 08-21-00 1425 1,200 1,100 <250 <50 <05 <0 5 11 056 <br /> ' 11-28-00 1612 730 360 <250 <50 <05 <0 5 1 1 3 9 <br /> 02-28-01 1575 650 270 <250 <5 0 <05 <0 5 058 <05 <br /> 05-21-01 15 83 930 630 <250 <5 0 <0 5 <05 0 57 <0 5 <br /> 08-16-01 1671 680 1,100 250 <5 0 <0 5 <0 5 052 <05 <br /> 11-14-01 1775 860 420 <250 <5 0 <0 5 <05 11 <0 5 <br /> 02-13-02 1670 700 620 <250 <20 <0 5 30 <05 <05 <br /> 05-16-02 1691 750 260 <250 <5 0 <0 5 <05 075 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 /> ' 02-21-03 1784 NS NS NS NS N5 NS NS NS <br /> 05-08-03 1767 830 430 <250 NA <0 5 <0 5 <05 75 <br /> Notes <br /> ug/l micrograms per liter <br /> ' TPH-g Total Petroleum Hydrocarbons quantified as gasoline <br /> "IPH-d Total Petroleum Hydrocarbons quantified as diesel <br /> TPH-ma Total Petroleum Hydrocarbons quantified as motor oil <br /> N5 Not sampled <br /> NA Not analyzed <br /> 1 <br /> J <br /> Advanced GeoEnviroamental,Inc <br />