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i f <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 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 /> Gettler Ryan/Geostrategies Client Prot '1D Unocal 0187/Stockton Sampled 07/31/95 <br /> 3035 Prospect Park Drive #110 Sample Descnpt U-6 Received 08/01/95 <br /> Rancho Cordova, CA 95670 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/04/95 <br /> Attention Greg Gurss Lab Number 9508004-03 Reported 08f08j95 <br /> V <br /> QC Batch Number GC080495BTEX02A <br /> Instrument ID GCHP02 <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 0 50 <br /> Toluene 050 N D <br /> ND <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) N D <br /> 0 50 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 86 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Mike regory <br /> Project Manager <br /> Page 3 <br /> _ ,G�k <br />