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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek C4 94598 (510) 988 9600 FAX (510) 988 9673 <br /> Analytieai 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 %00 FAX(916) 921 0100 <br /> - EA Engineering Science &Tech µ Client Prol 11) Exxon-7-3942, 51539 42 1300 Sampled 08/26/97 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript RW4 Received 08/27/97 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/29/97 <br /> - Attention Christa Marting Lab Number 970SE45-02 _ Reported 09/04197 <br /> Unstrument <br /> CBatch Numher GC082997BTEX06A ID GCHP06 <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 1000 2600 <br /> Methyl t-Butyl Ether 125 56 <br /> Benzene 10 98 <br /> Toluene 10 180 <br /> Ethyl Benzene 10 140 <br /> Xylenes (Total) <br /> #0 <br /> 340 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 96 <br /> lie <br /> I <br /> Analytes reported as N O were not present above the stated limit of detection <br />[EQUOIA ANALYTICAL - ELAP #1210 <br /> e gd=z� <br /> Ri Herling <br />�r t Manager Page 2 <br /> I <br />