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' 680 Chesapeake Dnvc Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (S10) 988 9600 FAX (510) 988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br />' frlll� <br /> i <br /> EA Engineering Science &Tech Client Prol ID Exxon 7-3942, 51539 42 1300 Sampled 11/11/97 <br /> 468 Mt Diablo Blvd Ste 8100 Sample Descrlpt RW1 Received 11/12/97 <br /> gLafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/22/97 <br /> Attention Chrlsta Marting Lab Number 9711732-12 Reported 12J02197 <br /> IC Batch Number GC1122976TEX21A <br /> strument ID GCHP21 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br />'Analyte Detection Limit Sample Results <br /> ug/L. u9/L <br /> TPPH as Gas 10000 13000 <br /> Methyl t-Butyl Ether 500 520 <br /> Benzene 100 410 <br /> Toluene 100 1500 <br />,Ethyl Benzene 100 750 <br /> Xylenes (Total) 100 1800 <br /> Chromatogram Pattern Gas <br />'Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 96 <br /> lie <br /> 1 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> LQUOIA ANALYTICAL - ELAP #1210 <br /> jVrole <br /> d Herling 15 <br /> ct Manager Page <br />