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Sequoia680 Chesapeake Drrvc Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Cane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> fall,' Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> EA Engineering Science &Tech Client Prol 10 Exxon 7-3942, 51539 42 1300 Sampled 08/26/97 <br /> 3468 Mt Diablo Blvd Ste 13100 Sample Descrlpt UVB-MW2 Received 08/27/97 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Anafysis Method 8015Mod/8020 Analyzed 09/03/97 <br /> Attention Christa Marting Lab Number 9708E45-10 Reported 09J04197 <br /> QC Batch Number GC090397BTEX06A - <br /> Instrument ID GCHP06 <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 20000 120000 <br /> Methyl t-Butyl Ether 1000 1300 <br /> Benzene 200 12000 <br /> Toluene 200 23000 <br /> Ethyl Benzene 200 2700 <br /> Xylenes (Total) 200 13000 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 100 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br />[EQUOIA ANALYTICAL - ELAP 01210 <br /> 3d Herling <br /> Ot Manager Page s <br />