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s <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX (650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> trlll� Analytical 814 Striker Avenue Suite B Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> Blaine Tech Services Client Proj ID Chevron 9-4275/971125-51 Sampled 11/25/97 <br /> 1680 Rogers Avenue Sample Descript MW-7 Received 11/26/97 <br /> San Jose CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 12/09/97 <br /> Attention Fran Thie Lab Number 9711G19-07 Reported 12f 12j97 <br /> QC Batch Number GC120997BTEX18A <br /> Instrument ID GCHP18 <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 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 98 <br /> • <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA L ICAL - ELAP #1210 <br /> Allk <br /> y Penner <br /> Project Manager Page 21 <br />