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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> �„�► Analytical 819 Sinker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)931 0100 <br /> EA Engineering Science &Tech Client Prod iD Exxon 7-3942, 5153942-1300 - Sampled 11/04/96- <br />' , 3468 Mt Diablo Blvd Ste 13100 Sample Descnpt MW2 Received 11/05/96 , <br /> , Lafayette, CA 94549 Matrix LIQUID , <br /> Analysis Method 8015Mod/8020 Analyzed 11/08/96 <br /> Attention Tracy Faulkner _ Y Lab Number 9611209-12_ _ Reported 1111?/q6 <br /> QC Batch Number GC110896BTEX21A- _ -- - - <br /> Instrument 1D GCHP21 <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 - 50 810 <br /> Methyl t-Butyl Ether 25 21 <br /> Benzene 050 25 <br /> Toluene 050 N D <br /> Ethyl Benzene 050 65 <br /> Xylenes (Total) 0.50 14 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 118 <br />' Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL FLAP 41210 <br /> 12 <br /> e Follett <br /> Project Manager Page 12 <br /> 1 <br />