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1 <br /> Q Sequoia 680 Chesapcakr.Dnvc Redwood City CA 94063 (650) 364 9600 FAX (650) 364 9233 <br /> 404 N Wiget franc Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> �I,�► Analytical 819 StnkcrAvcnue Suite 8 Sacramento CA 95834 (9S 6) 921 9600 FAX (916) 921 0100 <br /> EA Engineering Science &Tech Client Prof ID Exxon 7-3942 5153942 1300 Sampled 03/03/98 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript V2 Received 03/04/98 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/16/98 <br /> Attention Christa Marting Lab Number 9803307-19 _ deported 03j31 j38 <br /> C Bal:6 Number GC031698BTEX17A _ - <br /> strument ID GCHP17 <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 50000 150000 <br /> Methyl t-Butyl Ether 2500 N D <br /> Benzene 500 11000 <br /> Toluene 500 30000 <br /> Ethyl Benzene 500 3500 <br /> Xylenes (Total) 500 17000 <br /> Chromatogram Pattern Gas <br /> lSurrogates Control Limits % % Recover <br /> Trifluorotoluene 70 130 105 <br /> 1 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> 1EQUOIA ANALYTICAL - ELAP 01210 <br /> jaWrtd HerlingcManager Page 2 <br /> 1 <br />