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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N."get Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue.Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> I„O Analytical 1455 McDowell Blvd.North,Ste.D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 0 <br /> SECOR International Project: ARCO 4493,Stockton,CA Sampled: 2/16/99 <br /> 9912 Business Park Drive, Ste. 100 Project Number: N/A Received: 2/17/99 <br /> Sacramento,CA 95827 Project Manager: Rusty Benkosky Reportcd: 3/3/99 <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 /> �M-1,t routinued) S902252-01 Water <br /> 1,1,1,2-Tetrachloroethane 9020304 2/26/99 2/26/99 10.0 ND ug/I D <br /> 1,1,2,2-Tetrachloroethane 10.0 ND D <br /> Tetrachloroethene 10.0 ND D <br /> Toluene 10.0 ND D <br /> 1,2,3-Triehlorobenzene 10.0 ND D <br /> 1,2,4-Trichlorobenzene 10.0 ND D <br /> 1,1,1-Trichloroethane 10.0 ND D <br /> 1,1,2-Trichloroethane 10.0 ND D <br /> Trichloroethene 10.0 433 D <br /> Trichlorofluoromethane 25.0 ND D <br /> 1,2,3-Trichloropropane 10.0 ND D <br /> 1,2,4-Trimethylbenzene 10.0 ND D <br /> 1,3,5-Trimethylbenzene 10.0 ND D <br /> yl chloride 10.0 ND D <br /> 1 Xylenes 10.0 ND D <br /> Surrogate: Dibromofluoromethane 70.0-130 117 <br /> Surrogate: 1,2-DCA-d4 70.0-130 112 <br /> Surrogate: Toluene-d8 70.0-130 100 <br /> Surrogate: 4-BFB 70.0-130 94.4 " <br /> equoia Analytical -Sacramento *Refer to end of report for text of notes and definitions. <br /> ,2 50 <br /> Sandra R. Hanson,Client Services Representative Page 4 of 20 <br />