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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 rAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (514) 988 960D FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 Of 00 <br /> f�-Gettler Ryan/Geostrategfes E Client Proj ID Chevron 9-1848, Manteca Sampled 08/25/97 <br /> ;; 3164 Gold Camp Drive #240 Sample Descript 82-1 D Received 08/30/97 <br /> tiRancho Cordova, CA 95670 Matrix SOLID Extracted 09/20J97 <br /> Analysis Method 8015Mod/8020 Analyzed 09/22/97 <br /> Attention Greg Gurss Lab number 9709993-04 Reported 10J27197 <br /> r <br /> QC Batch Number GCO92097BTEXEXA <br /> Instrument ID GCHP07 <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 00050 N ❑ <br /> Xylenes(Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 92 <br /> 4-Bromofiuorobenzene 60 140 90 <br /> Analytes reported as Irl D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> ./O�— <br /> gory <br /> Project Manager Page 4 <br /> tom, <br />