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(D 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 /> IWO Analytical 819 Stnker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Touchstone Developments Client Proj 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 8015Mod/8020 Analyzed 11/09/95 <br /> Attention Ann Marie Dockstader -Lab Number 9511553-04 Reported 11J1 3/95 <br /> CC Batch Number GC110895BTEXEXB µ <br /> Instrument ID GCHP18 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 100 430 <br /> Benzene 050 N D <br /> Toluene 0 50 1 9 <br /> Ethyl Benzene 050 2 8 <br /> Xylenes (Total) 0 50 28 <br /> Chromatogram Pattern <br /> Weathered Gas C8-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 90 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> (Z/4 10 <br /> Mark Cargasacchi <br /> Project Manager Page 8 <br />