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i680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364 9233 <br /> Sequoia 404 N Wiget Fane Walnuc Creek CA 94598 (925)988 %00 FAX(925)988 9673 <br /> 14 Straker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> Analytical 8 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792 1865 FAX(707)792 0342 <br /> • <br /> EA Engineering Science &Tech Client Pro) ID Exxon 7-3942, 5153942 1300 Sampled 08/19/98 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript MW9 Received 08/20/98 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/27/98 <br /> Attention Christa Marting Lab Number 9808C95-08 Reported 09JO4198 <br />[C Batch Number GC082798BTEX30A <br /> nstrument 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 50 340 <br /> Methyl t-Butyl Ether 25 45 <br /> Benzene 050 <br /> 081 <br /> Toluene 050 613 <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern GAS <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 94 <br /> I <br /> nalyies reported as N D were not present above the stated limit of detection <br /> EQUOIA ANALYTICAL - ELAP #1210 <br />;i*Manager Herhng <br /> Page i6 <br />