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t Sequoia 630 Cnesapeake Drive Redwood CLty CA 94063 (4(5) 364 9600 F-kX(415) 364-9233 <br /> 404 N Wiaet Lane Walnut Creek C?. 94393 (510) 933 9600 F�kX(a to)988 9673 <br /> Analytical 319 Stnkcr Avenue Suite 8 Sacramento Ca 95834 (916) 921 9600 FAX(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 B100 Sample Descrlpt RW3 Received 10/20/95 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 10/26/95 <br /> Attention Tracy Faulkner Lab Number 9510F30-24 Reported 10j27j95 <br /> QC Batch Number GC102695BTEX07A <br /> Instrument ID GCHP07 <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 20000 87000 <br /> Methyl t-Butyl Ether 1000 N D <br /> Benzene 200 7000 <br /> Toluene 200 12000 <br /> Ethyl Benzene 200 3400 <br /> Xylenes (Total) 200 14000 <br /> Chromatogram Pattern Gas <br />' <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 90 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SECU// A AL ICAL - ELAP #1210 <br /> Ir � <br /> I <br /> 1 <br /> eggy Penner <br /> Project Manager Page S <br />