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. Sequoia 680 Chesapeake Dnve Redwood Cary CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wig,-,Lane Walnut Creek CA 94598 (510) 988 9600 FAX(5 10) 988 9673 <br /> ho Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX{936)921 0100 <br /> 10 - I <br /> EA Engineering Science &Tech Client Prol ID Exxon 7-3942 / 8373942 1307 SamplRd 02/13/96 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript MW8 Received 02/14/96 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/16/96 <br /> Attention Tracy Faulkner Lab Number 9602A05-16 Reported 02J23196 <br />`CC Batch Number GCO21696STEX17B <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 5000 57000 <br /> Benzene 50 190 <br /> Toluene 50 2100 <br /> Ethyl Benzene 50 2600 <br /> Xylenes (Total) 50 10000 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 95 <br /> Anaiytes reported as N D were not present above the stated limit of detection <br />`SEQUOIA ANALYTICAL - ELAP 41210 <br /> in Follett <br /> sect Manager Page 36 <br /> 1 <br />