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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(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916) 921 0100 <br /> Touchstone Developments Client Prol ID Chevron 9-8264/8264-1 - Sampled 11/07/95 <br /> 6280 Stoneridge Mall Rd B211 Sample Descript SP-4 (A-D) Comp Received 11/08/95 <br /> Pleasanton, CA 94588 Matrix SOLID Extracted 11/08/95 <br /> Analysis Method EPA 8015 Mod Analyzed 11/09/95 <br /> - Attention Ann Marie Doc kstader Lab Number 9511553-04 Reported 11 f i 3j95 <br /> QC Batch Number GC1107950HBPEXA - <br /> Instrument ID GCHP4B <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TEPH as Diesel 50 970 <br /> Chromatogram Pattern C9-C24 Unidentified HC <br /> Surrogates Control Limits% % Recovery <br /> n-Pentacosane (C25) 50 150 117 <br /> 0 <br /> Results quantitated against a diesel standard <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQU A ANALYTICAL - ELAP #1210 <br /> Mark Cargasacchl <br /> ect Manager Page 9 <br />