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Sequoia 680 Chesapeake Dnve Redwood City Ca 94003 (415) 364 9600 FAX(415) 364 9233 <br /> 404 "+ Wiget Lane Walnut Crcck CA 94598 (510) 933 9600 FAX(5101 983 9673 <br /> X117 Analytical 339 Stnker Avenue Suice 3 Sacramento CA 95834 (916) 921 9000 F-kX(916) 921 0100 <br /> EA Engineering Science &Tech Client Prol ID Exxon 7-3942/8373942 1307 Sampled 10/19/95 <br />' 3468 Mt Diablo Blvd Ste 8100 Sample Descrlpt 3942 MWtNP 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 9510F27-18 Reported 10127195 <br /> OC Batch Number GC102495BTEX21A <br /> Instrument 1D GCHP21 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br />' Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> tTPPH as Gas 50 180 <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 /> Unidentified HC <C8 <br />' Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 93 <br /> Analytes reported as N D were not present above the stated Itmlt of detectton <br /> SEQUOIA L [CAL - EL4P #1210 <br /> i <br /> eggy Penner <br /> Project Manager Page 18 <br />