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680 Chesapeake Drive Redwood City CA 94063 (650)364 9600 FAX(650)364 9233 <br /> Sequoia 404 N Wiget 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)921-0E00 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 ( ) 792-1865 FAX(707)792 0342 <br /> 3 551 Industrial Road San Carlos CA 94070-4111 (6S0650) 232-9600 FAX(650)232-9612 <br /> Sequoia Analytical Client Project 10 1-904337- Shell Oil Company Sampled - - <br /> 1551 Industrial Blvd Sample Descript Water Received -- <br /> San Carlos, CA 94070 Analysis Method EPA 8010 Analyzed May 6, 1999 <br /> Attention Mike Gregory Lab Number Method Blank Reported May 10, 1999 <br /> QC Batch Number GCO50699801006A <br /> Instrument 10 HP-6 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> fig/L Ng/L. <br /> Bromodlchloromethane 050 N D <br /> Bromoform 050 N D <br /> Bromomethane 10 N D <br /> Carbon tetrachloride 050 N D <br /> Chlorobenzene 050 N D <br /> Chloroethane 10 N D <br /> Chloroform 050 N D <br /> Chloromethane 10 N D <br /> D I bromochl orom ethane 050 N D <br /> 1,3-Dichlorobenzene 050 N D <br /> 1,4-Dichlorobenzene 050 N D <br /> 1,2-Dichlorobenzene 050 N D <br /> 1,1-Dichloroethane 050 N D <br /> 1,2-Dichloroethane 050 N D <br /> 1,1-Dichloroethene 050 N D <br /> cis-1,2-Dichloroethene 050 N D <br /> trans-1,2-Dichloroethene 050 N D <br /> 1,2-Dichloropropane 050 N D <br /> cls-1,3=Dlchloropropene 050 N-D <br /> trans-1,3-Dlchloropropene 050 N D <br /> Methylene chloride 10 <br /> 1,1,2,2-Tetrachloroethane 050 N D <br /> Tetra chi oroethene 050 N D <br /> 1,1,1-Trichloroethane 050 N D <br /> 1,1,2-Trichloroethane 050 N D <br /> Trichloroethene 050 N D <br /> Trichlorofluoromethane 050 N D <br /> Vinyl chloride 1 0 N D <br /> 1,2-Dibromoethane 10 N D <br /> Surrogates Control Limit % % Recovery <br /> D ibromodifl uoro methane 50 150 101 <br /> 4-Bromofluorobenzene 50 150 88 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 Please Note <br /> aznk� * Over calibration range due to extensive au contamination <br /> Charlie Westwater <br /> Project Manager <br /> 9050264 SSS <7> <br />