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' Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget t.ane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> jqJ60 Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> EA Engineering Science &Tech Client Prol ID Exxon-7-3942, 5153942 1300 Sampled 02/28/97 <br /> 468 Mt Diablo Blvd Ste B100 Sample Descript UVB-MWJ Received 03/03/97 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/07/97 <br /> Attention Chnsta Marting Lab Number 9703032-03 _ _ Reported 03/12197 <br /> C Batch Number GC030797BTEX06A- - <br /> strument ID GCHP06 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br />`Analyte Detection Limit Sample Results <br /> ug/L. ug/L <br /> PPH as Gas 20000 99000 <br /> Methyl t-Butyl Ether 1000 1100 <br /> Benzene 200 7200 <br /> Toluene 200 18000 <br /> ethyl Benzene 200 2000 <br /> ylenes (Total) 200 11000 <br /> Chromatogram Pattern Gas <br /> urrogates Control Limits % % Recove <br /> rifluorotoluene 70 130 84 <br /> knalytes reported as N D were not present above the stated limit of detection <br /> 1EQUOIA ANALYTICAL - ELAP #1210 <br /> I <br /> FFo"ett <br /> ct Manager Page 3 <br /> 1 <br />