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Ai 4D <br /> Sequoia 680 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 /> Iwo Analytical 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Touchstone Developments Client Prol ID Chevron 9-8264 Sampled 11/13/95 <br /> P O Box 2554 Sample Descript TXB-1-17' Received 11/14/95 <br /> Santa Rosa, CA 95405 Matrix SOLID Extracted 11/15/95 <br /> Analysis Method 8015Mod/8020 Analyzed 11/15/95 <br /> Attention Jeff Monroe Lab Number 9511A10-08 Reported 11J22/95 <br /> QC Batch Number GC1 1 1595BTEXEXB _ -- - <br /> Instrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 1 0 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) N D <br /> Chromatogram 00050 Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 113 <br />• <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEOUOI NALYTICAL - ELAP #1210 <br /> Mark Cargasacchl <br /> Project Manager <br /> Page 17 <br />