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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 /> war Analytical 819 Sinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Touchstone Developments - Chent Pro3 ID Chevron 9-8264/8264-1 " "Sampled 11/07/95 <br /> 6280 Stoneridge Mall Rd B211 Sample Descript TH2O Received 11/08/95 <br /> Pleasanton, CA 94588 Matrix LIQUID Extracted 11/08/95 <br /> Analysis Method EPA 8015 Mod Analyzed 11/09/95 <br /> Attention Ann Marie Dockstader Lab Number 9511554-04 -Reported 11113195 <br /> QC Batch Number GC1106950HBPEXA <br /> Instrument ID GCHP4A <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TEPH as Diesel 20000 450000 <br /> Chromatogram Pattern C9-C24 Unidentified HC <br /> Surrogates Control Limits% % Recovery <br /> n-Pentacosane (C25) 50 150 Q <br /> i <br /> Results quantitated against a diesel standard <br /> Anaiytes reported as N D were not present above the stated limit of detection <br /> SEQUO ANALYTICAL - ELAP #1210 <br /> Mark Cargasacchi <br /> orct Manager Page 5 <br />