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Sequoia 680 Chesapeake Drive Redwood City, CA 9400., (415) 364 9600 FAX(415) 364 9233 <br /> (i) 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) 931 9600 FAX(916)921 0100 <br /> mnuI'M,ss <br /> Gettler Ryan/Geostrategies Client Prof ID Unocal 4707 Pacific Ave, Stoc Sampled 07/30/96 <br /> 3164 Gold Camp Drive #240 Sample Descnpt EFF Received 07/31/96 <br /> Rancho Cordova, CA 95670 Matrix AIR I' <br /> Analysis Method 8015Mod/8020 Analyzed 08/01/96 <br /> Attention Greg Gurss Lab Number 9607H88-02 Reported 08/02196 ; <br /> QC Batch Number GC080196BTEX17A <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 10 62 <br /> Benzene 010 014 <br /> Toluene _ 010 21 <br /> Ethyl Benzene 010 1 4 <br /> Xylenes (Total) 010 98 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 115 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> e Gregory <br /> Project Manager Page 2 <br />