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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 (5to) 988 9600 FAX (510) 988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 OW 921 9600 FAX (916) 921 0100 <br /> wo40Iwo- <br /> 40 <br /> Delta Environmental Consults Client Prol ID Exxon 7-3708, D093-809 Sampled 11/24/97 <br /> 3164 Gold Camp Drive #200 Sample Descnpt MW-5 Received 11/25/97 <br /> Rancho Cordova, CA 95670 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 12/05/97 <br /> Attention Keont Almeida Lab Number 9711 F94-05 Reported 12109/97 <br />)C Batch Number GC120597BTEX22A <br /> nstrument ID GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Benzene 050 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 113 <br /> talytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> i <br /> I1 egory <br />•oject Manager Page 10 <br />