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(IN <br /> 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 /> qIF 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 P-7 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 9511554-01 " " _ Reported 11f13j95 <br /> QC Batch Number GC110895BTEXEXB <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 10 26 <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) <br /> Pattern 0 0050 OGas <br /> Surrogates Control Limits% % Recovery <br /> Trrtluorotoluene 70 130 116 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQU ANALYTICAL - ELAP #1210 <br /> Mark Ca gasacchi ' <br /> Project Manager Page 2 <br />