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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364 9Z 33 <br /> J4 <br /> ^'Yl q 404 V Wiget Lane Walnut Creek CA 94598 (925)968 9600 FAX(925)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707) 792-1865 FAX(707)792 0342 <br /> EA Engineering Science &Tech Client Prol ID Exxon 7-3942, 5153942 1300 Sampled 08/19/98 <br /> 3468 Mt Diablo Blvd Ste 8100 Sample Descript MW12 Received 08/20/98 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/25/98 <br /> Attention Christa Marting Lab Number 9808C97-11 Reported 09f04/98 <br /> C Batch Number GCO82598BTEX30A <br /> Instrument ID GCHP30 <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 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) <br /> Pattern 050 N D <br /> Surrogates Control Limits % % Recover <br /> Trtfluorotoluene 70 130 94 <br /> inaiytes reported as N 0 were not present above the stated lima of detection <br /> 1EQUOIA ANALYTICAL - ELAP #1210 <br /> *Manager Herling <br /> I Page 4 <br />