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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 36.1 9233 <br /> 404 111 Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> EA Engineering Science &Tech Client Prol ID Exxon 7-3942/83739421307 Sampled 05/11/95 <br /> 3468 Mt Diablo Blvd Ste 8100 Sample Descript P1 Received 05/12/95 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 05/18/95 <br /> Attention T Faulkner Lab Number_ 9505983.07_ Reported 05123195_ = <br />' CC Batch Number�GC051695BTEX21 A_ µ <br /> Instrument ID GCHP21 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br />' Analyte Detection Limit Sample Results <br /> ug/L ug/L. <br />' TPPH as Gas 500 2400 <br /> Benzene 5 0 55 <br /> Toluene 50 N D <br /> Ethyl Benzene 5 0 .. 160 <br /> Xylenes (Total) 5 0 :: 110 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 93 <br /> b <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 1 <br /> reggy Penner <br /> roject Manager Page 7 <br />