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Sequoia 660 Chesapeake Dnve Redwood City CA 93063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N WiVt lane Walnut Creek CA 94598 (510) 988 9600 FAX(SIO)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> • <br /> EA Engineering Science&Tech Client Prod ID Exxon 7-3942/83739421307 Sampled 05/111/95_ <br /> 3468 Mt Diablo Blvd Ste 6100 Sample Descript MW-11 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 9505983-10 _Reported 05f23195 <br /> QC Batch Number GC051895BTEX02A µ µ <br /> Instrument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br />' Analyte Detection Limit Sample Results <br /> ug/L ug/L <br />' TPPH as Gas 50 130 <br /> Benzene 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 N D <br />' Xylenes (Tota!) 050 N D <br /> Chromatogram Pattern <br /> Weathered Gas C7-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 102 <br /> b <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> reggy Penner <br /> project Manager Page 10 <br />