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Sequoia 680 Chesapeake Drive Redwood City Ca 94063 (415) 364 9600 Fax(415) 364 9233 <br /> ,1114 "! Wiget Lane Walnut Cre-•k Ca 94598 (510) 983 9600 FXX{5t0) 988 9673 <br /> Analytical 819 5cnker avenue suice 8 5a<ramcnco CA 95934 (916) 921 9600 FAX{916) 921 0100 <br /> EA Engineering Science&Tech Client Prol ID Exxon 7-3942/8373942 1307� Sampledµ1Q/19/95' 3468 Mt Diablo Blvd Ste 6100 Sample Descript 3942 MW13PPD Received 10/20/95 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> " Analysis Method 8015Mod/8020 Analyzed 10/24/95 <br /> Attention Tracy Faulkner Lab Number 9510F27-05 _Reported 10{27195 <br /> QC Batch Number dC102495BTEX20A <br /> Instrument ID GCHP20 <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 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 87 <br /> 1 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> LQ AL ICAL - ELAP #1210 <br /> 75! <br /> WV Penner <br /> rogj`ect Manager Page 5 <br />