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j Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 IFAX(650)364 9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> I, Gettler Ryan/Geostrategles Client Pro' ID Chevron 9-1848, Manteca Sampled 08/25/97 <br /> r, 3164 Gold Camp Drive #240 Sample Descrlpt B4-14 5 Received 08/30/97 <br /> Rancho Cordova, CA 95670 Matrix SOLID Extracted 09/20/97 <br /> Analysis Method 8015Mod/8020 Analyzed 09/22/97 <br /> Attention Greg Gurss _ Lab Number 9709993-08 Reported 10/27/97 ; <br /> QC Batch Number GC092097BTEXEXA <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 1 0 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 103 <br /> 4-Bromofluorobenzene 60 140 84 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Ahlk IAO�� <br /> Aw r <br /> Project Manager Page B <br /> ca <br />