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Sequoia 630 Chesapeake Drive Rcdwood City CA 94063 (415) 364 9600 FAX(4l5) 36-4 9233 <br /> 404 v Wiget Lane Walnut Creak CA 94598 (5i0) 933 9600 FAX(310) 988 9,573 <br /> X1,1 Analytical 319 SLnkerAvenue Suite a Sacramento CA 95334 (916) 9.1 9600 FAX(916) 921 0100 <br /> 1 <br /> EA Engineering Science &Tech Client Prol ID Exxon 7-3942/8373942 1307 Sampled 10/19/95 <br />' 3468 Mt Diablo Blvd Ste B100 Sample Descrlpt 3942 MW8PP Received 10/20/95 <br /> Lafayette, CA 94,549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 10/24/95 <br /> Attention Tracy Faulkner Lab Number 951 OF27-13 Reported 10127/95 <br />' CC Batch Number GC1024956TEX21A <br /> Instrument ID GCHP21 <br /> Tota! Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 5000 52000 <br /> Methyl t-Butyl Ether 250 N D <br /> Benzene 50 150 <br /> Toluene 50 1400 <br /> Ethyl Benzene 50 2400 <br /> Xylenes (Total) 50 8600 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recove <br /> Trifluorotoluene 70 130 79 <br /> Analytes reported as N D were not present above the stated Iimlt of detection <br />' SEQU A AL ICAL - ELAP #1210 <br /> l <br /> g Penner <br /> roject Manager Page 13 <br />