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4D <br /> Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 404 N Weget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Touchstone Developments Client Pro) ID Chevron 9-8264 Sampled 11/13/95 <br /> P 0 Box 2554 Sample Descrlpt Sump 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 9511A10-02 Reported 11 f22195 <br /> QC Batch Number GC111595BTEXEXA <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 10 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 122 <br /> 1101 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUO ANALYTICAL - ELAP #1210 <br /> /1 <br /> Mark Cargasacchl <br /> Project Manager Page 5 <br />