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- ' Sequoia680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650) 364 9233 <br /> 404 N Wigei 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 Prod ID Exxon 7-3942, 5153942 1300 Sampled- 03/03/98- <br /> " 3468 Mt Diablo Blvd Ste B100 Sample Descript MW2 deceived 03/04/98 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/16/98 <br /> Attention Chnsta Marling - -- Lab Number 9803305-01 _ _ Reported 03_f31 f98 <br />�C Batch Number GC031698BTEX03A <br /> istrument ID GCHP3 - <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 50 110 <br /> Methyl t-Butyl Ether 25 33 <br /> Benzene 050 1 4 <br /> Toluene 050 N D <br /> Ethyl Benzene 050 1 2 <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Surrogates <br /> 70 130 95 <br /> 1 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> 1EQUOIA ANALYTICAL - ELAP #1210 <br /> frd Herling <br /> e'cl Manager Page 2 <br />