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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (415) 364 9600 t-AX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek, CA 94598 (510) 988 9600 FAX(5 10)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Gettler Ryan/Geostrategies Client Pro' ID Chevron 9-1918, Stockton Sampled 05/10/97 <br /> P' 3164 Gold Camp Drive #240 Sample Descrlpt SS-1 (A,B,C,D) Comp Received 05/12/97 <br /> Rancho Cordova, CA 95670 Matrix SOLID Extracted 05/13/97 = <br /> Analysis Method 8015Mod/8020 Analyzed 05/13/97 , <br /> Attention Greg Gurss Lab Number 9705472-01 Reported 05j14197 <br /> QC Batch Number GCO51397BTEXEXA <br /> Instrument ID GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 10 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00060 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 91 <br /> 4-Bromofluorobenzene 60 140 104 <br /> I <br /> I <br /> I <br /> Analyies reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Project M nager Page 1 <br />