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Sequoia680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> l <br /> �rill7 Anaiytieai a 19 Stnker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> I <br /> EA Engineering Science&Tech Client Prol ID Exxon 7-3942/5153942 1300 Sampled 02/03/97 <br /> 468 Mt Diablo Blvd Ste B100 Sample Descript V3 deceived 02/04/97 <br /> i_afayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/05/97 <br /> Attention Christa Marting Lab Number 9702110-03 Reported 02J12J97 <br /> C 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 /> P,etH as Gas 5000 72000 <br /> hyl t-Butyl Ether 250 690 <br /> Benzene 50 130 <br /> Toluene 50 3400 <br /> thylBenzene 50 3800 <br /> ylenes (Total) 50 18000 <br /> Chromatogram Pattern Gas <br /> rrurrogates Control Limits % % Recovery <br /> rifluorotoluene 70 130 112 <br /> 1 <br /> 1 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> 1EQUOIA ANALYTICAL - ELAP 01210 <br /> --�r <br /> Fo lett <br /> ct Manager Page 3 <br />