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TABLE 4 <br /> Analytical Results of Pump-and-Treat Grab Ground Water Samples (µg11) <br /> Chapin Bros , Inc - 1766 Monte Diablo Avenue, Stockton, California <br /> EPA 8015M EPA 8020/8260 <br /> Ethyl <br /> Sample I D Date gallons TPH-g TPH-d Benzene Toluene benzene Xylene MTBE <br /> Effluent 04-24-02 15,264 <50 -- <0 5 <0 5 <0.5 <0 5 <5 0 <br /> Effluent 05-30-02 226,147 <50 -- <0 5 <0 5 <0 5 <0.5 <5.0 <br /> Effluent 07-15-02 553,558 <50 -- <0 5 <0 5 <0 5 <0.5 <5 0 <br /> Effluent 09-19-02 1,028,683 <50 -- <0 5 <0 5 <0 5 <0 5 <5 0 <br /> Effluent 10-15-02 1,200,093 <50 -- <0 5 <0 5 <0 5 <0 5 <5 0 <br /> Effluent 11-11-02 -- <50 -- <0 5 <0.5 <0 5 <0 5 <0 5 <br /> Effluent 12-10-02 1,592,885 <50 — <0 5 <0 5 <0 5 <0 5 <0 5 <br /> Effluent 12-27-02 1,677,237 -- <50 -- -- -- -- -- <br /> NOTES <br /> TPH-g/d total petroleum hydrocarbons quantified as gasolineldiesel <br /> reporting in micrograms per Mer(pig/1) <br />