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r t <br /> l <br /> TABLE 4 <br /> HISTORICAL ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> EPA METHODS 8015NV8021 <br /> Former Chase Chevrolet (Madison) Facility <br /> 423 North Madison Street, Stockton, California <br /> (µg/1) <br /> Location le Sample Depth <br /> TPH-g TPH-d TPH-mo MTBE Benzene Toluene benzene <br /> Ethyl- Xylene <br /> screen Date Water benzene s <br /> MW-21B 09-12-98 1504 2,600 1,600 450 --- 20 35 67 27 <br /> (48-53) 11-03-98 1644 2,200 1,600 320 <50 12 12 49 26 <br /> 02-02-99 1587 1,300 1,200 <250 <5 0 80 <05 49 13 <br /> 05-05-99 1566 1,300 700 <250 <50 86 17 29 28 <br /> 08-11-99 1582 1,400 700 <250 <50 <1 1 5 16 86 <br /> 11-09-99 1670 <50 <50 <250 <50 <05 <05 <0 5 <0 5 <br /> 02-08-00 1567 800 460 330 60 24 <05 41 16 <br /> 05-10-00 1425 1,400 920 360 <50 <05 <05 1 1 63 <br /> 08-21-00 1425 1,200 1,100 <250 <50 <05 <05 1 1 056 <br /> ' <br /> 11-28-00 16 12 730 360 <250 <50 <0 5 <05 1 1 39 <br /> 02-28-01 1575 650 270 <250 <50 <0 5 <05 058 <0 5 <br /> 05-21-01 1583 930 630 <250 <50 <0 5 <05 057 <0 5 <br /> 08-16-01 1671 680 1,100 250 <50 <05 <0 5 052 <0 5 <br /> 11-14-01 1775 860 420 450 <50 <05 <0 5 1 1 <0 5 <br /> 02-13-02 1670 700 620 <250 <20 <05 3 0 <05 <0 5 <br /> 05-16-02 1691 1 750 1 260 1 <250 1 <50 <05 <0 5 075 45 <br /> Notes <br /> µg/l micrograms per liter <br /> • TPH-g Total Petroleum Hydrocarbons quantified as gasoline <br /> TPH-d Total Petroleum Hydrocarbons quantified as diesel <br /> TPH-mo Total Petroleum Hydrocarbons quantified as motor oil <br /> i <br /> 1 <br /> 1 <br /> • <br /> Advanced GeoEnvironmental,Inc <br />