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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 989 9673 <br /> �I,� 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 02/03/97 <br /> rafayette, <br /> 68 Mt Diablo Blvd Ste B100 Sample Descript MW9 Received 02/04/97 <br /> CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/05/97 <br /> Attention Chnsta Marting Lab Number 9702110-06 Reported 02/12197 <br /> IC Batch Number GCO20497BTEX03B <br /> strument ID GCHP03 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br />� <br /> PPH as Gas 1000 1600 <br /> ethyl t-Butyl Ether 50 230 <br /> Benzene 10 320 <br /> Toluene 10 16 <br /> thyl Benzene 10 56 <br /> yienes (Total) 10 160 <br /> Chromatogram Pattern Gas <br /> arrogates Control Limits % % Recovery <br /> rifluorotoluene 70 130 97 <br /> 1 <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br /> 1EQUOIA ANALYTICAL - ELAP #1210 <br /> Follett <br /> ct Manager Pae 6 <br /> 9 <br /> f <br />