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` Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (415) 364 9600 TAX(415) 364 9233 <br /> . <br /> 404 N Wigct t..anc Walnut Creek CA 94598 (510) 988 9600 rAX(510)388 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 rAX(916)921 0100 <br /> i <br /> Gettler Ryan/Geostrategies Client Prol ID Unocal #6981, 7855 201 Sampled 02/27/97 <br /> 3164 Gold Camp Drive #240 Sample Descript Eff Received 02/28/97 <br /> Rancho Cordova, CA 95670 Matrix AIR <br /> Analysis Method 8015Mod/8020 Analyzed 02/28/97 ; <br /> Attention Steve Carter Lab Number 9702E99-02 j Reported 03JO41974 i' <br /> a <br />)C Batch Number GCO22897BTEX17A <br /> nstrument 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 50 100 <br /> Benzene 050 N D <br /> Toluene 050 ND <br /> Ethyl Benzene 050 066 <br /> Xylenes (Total) 050 7.0 <br /> Chromatogram Pattern <br /> Weatherer! Gas - >C8 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 88 <br /> i <br /> naiytes reported as N D were not present above the stated limit of detection <br />;EQUOIA ANALYTICAL - ELAP 01210 <br /> 41 gory <br />'roject Manager Page 2 <br />