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Sequoia <br /> 680 Chesapeake Dnvc Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> s] <br /> q 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9613 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> Analytical <br /> EA Engineering Science &Tech Client Prod ID Exxon 7-3942, 51539 42 1300 Sampled 11/11/97 <br /> F3488 Mt Diablo Blvd Ste B100 Sample Descript MW2 Received 11/12/97 <br /> ayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/22/97 <br /> Attention Christa Marting. Lab Number 9711732-02 Reported 12JO2197 <br /> IC Batch Number GC1 i2297BTErX21A <br /> strument ID GCHP21 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br />�nalyte Detection Limit Sample Results <br /> ug/L ug/L <br /> k <br /> PPH as Gas 50 5 2 <br /> ethyl t-Butyl Ether 2 5 5 2 <br /> enzene 050 32 <br /> Toluene 050 N D <br /> Flromatogram <br /> ylBenzene 050 34 <br /> enes (Total) 050 071 <br /> Pattern nGas <br /> F urrogates <br /> Control Limits % % Recovery <br /> nfluorotoluene 70 130 95 <br /> lie <br /> Analytes reported as N D were not present above the stated limit of detection <br /> 1EQUOIA ANALYTICAL - ELAP #1210 <br /> d Herling ` <br /> ct Manager Page z <br />