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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> D <br /> Sequoia <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> jj%,,y Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> t <br /> EA Engineering Science&Tech - " Client Prol ID Exxon 7-3942, 51539421300 - Sampled 11/04/96 <br />' 3468 Mt Diablo Blvd Ste 6100 Sample Descript V2 Received 11/05/96 " <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/07/96 <br /> _ <br /> "Attention Tracy Faulkner_ Lab Number 9611210-22 Reported 11 f 12J96 <br /> QC Batch Number GCi 10796BTEX21A <br /> Instrument ID GCHP21 <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 130000 <br /> Methyl t-Butyl Ether 2500 N D <br /> Benzene 500 13000 <br /> Toluene 500 31000 <br /> Ethyl Benzene 500 2500 <br /> Xylenes (Total) 500 .. 13000 <br /> Chromatogram Pattern .. Gas <br />' Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 91 <br />' Analytes reported as N D were not present above the stated lund of defection <br /> SEQUOIA ANALYTICAL ELAP #1210 <br /> Frovin Follett <br /> lect Manager Page 3 <br />