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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX{SFO}988 9673 <br /> VAP Analytical 819 Str�kcr Avenue Suite 8 FAX CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> 0 <br /> Touchstone Developments Client Prol ID Chevron 9-4183 <br /> 781 Kingston Ave Sample Descript T4-W-9 5 Sampled 04/10/96 <br /> Oakland, CA 94611 Matrix SOLID Received 44/10/96 <br /> Analysis Method8015Mod 8020 Extracted 04/11/96 <br /> Attention Robert Mallory Lab Number 9604798-02 / Analyzed 04/11/96 <br /> Reported 04j12196 <br /> OC Batch Number GC041196BTEXEXA <br /> Instrument 1D GCHP18 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) With BTEX and MTBE <br /> Analyte Detection Limit <br /> Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas <br /> Methyl t-Butyl Ether 300 780 <br /> Benzene 75 N D <br /> Toluene 15 1 1 <br /> Ethyl Benzene 15 12 <br /> Xylenes (Total) 1 5 47 <br /> Chromatogram Pattern 15 30 <br /> Weathered Gas <br /> Surrogates Control Limits %Trifluorotoluene 70 % Recovery <br /> 130 96 <br />• <br /> lnaiytes reported as N 0 were not present above the stated limit of detection <br /> 3EQU41A ANALYTICAL - ELAP #1210 <br /> aFollett <br /> t Manager <br /> Page 3 <br />