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Sequoia <br /> 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX{650)364 9233 <br /> e <br /> J q 404 N Wigg Lane Walnut Creek CA 94598 (510) 98a 9600 FAX (510) 988 9673 <br /> Analytical 819 Stnkcr Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (9l6) 921 0100 <br /> - <br /> EA Engineering Science &Tech Client Prol ID Exxon 7-3942, 51539 42 1300 Sampled 11/11/97 <br /> 3468 Mt Diablo Blvd Ste 8100 Sample Descript V2 Received 11/12/97 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/24/97 <br /> Attention Chnsta Marting Lab Number 9711733-03 Reported 12J02J97 <br /> Lstrument <br /> Batch Number GC1124976TEX21A <br /> lD 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 25000 160000 <br /> Methyl t-Butyl Ether 1250 3500 <br /> Benzene 250 12000 <br /> Toluene 250 34000 <br /> Ethyl Benzene 250 4500 <br /> Xylenes (Total) 250 22000 <br /> Chromatogram Pattern Gas <br />`Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 97 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> LEQUOIA ANALYTICAL - ELAP #1210 <br /> rd Herling <br /> rro ect Manager Page a <br />