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41) Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(5 t0) 988 9673 <br /> q4W Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> Gettler Ryan/Geostrategles Client Prot ID Chevron 9-1848, Manteca Sampled 08/25%97 <br /> 3164 Gold Camp Drive #240 Sample Descnpt 133-15 5 Received 08/30/97 <br /> i; Rancho Cordova, CA 95670 Matrix SOLID Extracted 09/20/97 <br /> Analysis Method 8015Mod/8Q20 Analyzed 09/22/97 <br /> Attent=ion Greg Gurss Lab Number 97099 <br /> ____ 9709993-06 Reported 10/27J97 <br /> 1QC: Batch'N' umbe'r' GC092097BT'EXEXA <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 <br /> Benzene 00050 N D <br /> Toluene N D <br /> Ethyl Benzene 0 0050 N D <br /> Xylenes (Total) 0 0050 N D <br /> Chromatogram Pattern ° 0050 N D <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 1 pg <br /> 4-Bromofluorobenzene 60 140 87 <br /> Analytes reported as N D were not present above the stated lima of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Am <br /> Mfter <br /> Page g <br /> 17�, <br />