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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (4 15) 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 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> EA Engineering Science&Tech - ---.....Client Prol ID Exxon 7-3942/83739421307 Sampled-05/11/95 _ <br />' 3468 Mt Diablo Blvd Ste B100 Sample Descript RW-1 Received 05/12/95 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 05/19/95 <br /> Attention T Faulkner Lab Number_9505985-20 _ _ _ Reported_05J23195 <br /> QC Batch Number GC051995BTEX21A � <br /> Instrument ID GCHP21 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br />' Analyte Detection Limit Sample Results <br /> ug/L ug/L <br />' TPPH as Gas 5000 .. 32000 <br /> Benzene 50 780 <br /> Toluene 50 4000 <br /> Ethyl Benzene 50 1300 <br />' Xylenes (Total) = 50 4300 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 87 <br /> b <br />'Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQ NALYTICAL EIRP #1210 <br /> enner <br /> rolect Manager Page 1 <br />