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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(510)988 9673 <br /> �III� Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> =,f Gettler Ryan/Geostrategies Client Prol ID Chevron 9-1848, Manteca Sampled 08/25/97 <br /> l 3164 Gold Camp Drive #240 Sample Descnpt B4-5 5 Received 08/30/97 <br /> J 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 9709993-07 r Reported 10/27/97 <br /> rr, x <br /> QC Batch Number GCO920976TEXEXA <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 /> Trifluorotoluene 70 130 89 <br /> 4-Bromofluorobenzene 60 140 84 <br /> �1 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA A14ALYTICAL - ELAP #1210 <br /> regory <br /> Project Manager Page 7 <br />