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Sequoi. u�1a 680 Chesapeake Drive Redwood City.CA 94063 (650)364-9600 FAX(650)364-9233 <br /> ia 404 N.Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Iwo Analytiea 819 Striker Avenue,Suite 8 Sacramento.CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd.North,Ste.D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 9 <br /> SECOR international Project: ARCO 4493,Stockton,CA Sampled: 2116199 <br /> 9912 Business Park Drive, Ste. 100 Project Numher• NIA Received: 2/17199 <br /> Sacramento,CA 95827 Project Manager: Rusty Benkosky Reported: 313199 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical -Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> MW-3(c.Qntinued) S902252-03 Water <br /> 1,1,1,2-Tetrachloroethane 9020207 2/18/88 2118/99 2.00 ND ug/l <br /> 1,1,2,2-Tetrachloroethane 2.00 ND " <br /> Tetrachloroethene 2.00 ND " <br /> Toluene 2.00 ND " <br /> 1,2,3-Trichlorobenzene 2.00 ND " <br /> 1,2,4-Trichlorobenzene 2.00 ND " <br /> 1,1,1-Trichloroethane 2.00 ND <br /> 1,1,2-Trichloroethane 2.00 ND " <br /> Tri(Moroethene 2.00 2.09 " <br /> Trichlorofluoromethane 5.00 ND " <br /> 1,2,3-Trichloropropane 2.00 ND <br /> 1,2,4-Trimethylbenzene 2.00 ND " <br /> 1,3,5-Trimethylbenzene 2.00 ND " <br /> 1 chloride 2.00 ND " <br /> Xylenes 2.00 2.62 " <br /> Surrogate: Dibromofluoromethane 70.0-130 114 <br /> Surrogate: 1,2-DCA-d4 70.0-130 113 " <br /> Surrogate: Toluene-d8 70.0-130 103 " <br /> Surrogate: 4-BFB 70.0-130 91.2 <br /> sequoia Analytical - Sacramento *Refer to end of report for text of notes and definitions. <br /> Sandra R. Hanson,Client Services Representative Page 8 of 20 <br />