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Sequoia 680 Chesapeake Dave Redwood City CA 94063 (650) 364 9600 17AX(650)364 9233 <br /> 404 N Vget Lane Walnut Creek, CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical <br /> 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Gettler Ryan[Geostrategies Client Prol ID Unocal 7827 21, #0187 Sampled 08/25/97 <br />;; 6747 Slerra Court Suite G Sample Descript Trip Received 08/26/97 <br />" Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/29/97 <br />',Attention Steve Carter Lab Number 970SE35-01 Reported 09J03197 <br /> QC Batch Number GC082997BTEX02A <br /> Instrument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 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 97 <br /> A,natytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 20�1 <br /> Rregory <br /> Manager Page t <br />