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Sequoia660 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 rAX(650)364 9233 <br /> 404 N Wiget Lan, Walnut Creek,CA 94598 (510) 988 9600 rAX(510) 988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX (9 16)921 0100 <br /> Iwo <br /> Gettler Ryan/Geostrategles Client Prol ID Chevron 9-1848, Manteca Sampled 08/25/97 <br /> 3164 Gold Camp Drive #240 Sample Descript B4 Received 08/30/97 <br /> U11 Rancho Cordova, CA 95670 Matrix LIQUID <br /> L Analysis Method EPA 8260 Analyzed 09/06/97 <br /> °l Attention Greg Gurss Lab Number 9708333-12 Deported 09/09/97 <br /> irsd PDni9$it i , ' t , r r s , <br /> IVt,Jru,L tIp, ', _ <br /> QC Batch Number MS0905978260H6A <br /> Instrument ID H6 <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> n-Propylbenzene 20 N D <br /> Styrene 20 N D <br /> 1,1,1,2-Tetrachloroethane 20 N D <br /> 1,1,2,2-Tetrachloroethane 20 N D <br /> Tetrachloroethylene 20 N D <br /> Toluene 20 N D <br /> 1,2,3-Trichlorobenzene 20 N D <br /> 1,2,4-Trichlorobenzene 20 N D <br /> 1,11,11-Trichloroethane 20 N D <br /> 1,1,2-Trichloroethane 20 N D <br /> Trichloroethylene 20 N D <br /> Trichlorofluoromethane 20 N D <br /> 1 23-Trichloropropane 20 N D <br /> 64-Trimethylbenzene 20 N D <br /> ,5-Trimethylbenzone 20 N D <br /> Vinyl chloride 20 N D <br /> Total Xylenes 20 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 76 114 98 <br /> Toluene-d8 88 110 96 <br /> 4-Bromofluorobenzene 86 115 103 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA AKALYTICAL - ELAP #1210 <br /> regory <br /> Project Manager <br /> Page 46 <br />