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Sequoia 680 Chesapeake Dnve Redwood City, CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 404 N W3get Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> �,1�1► Analytical 819 Stnker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Touchstone Developments Client Prol ID Chevron 9-2033, 2033-2 Sampled 10/30/96 <br /> P 0 Box 2554 Sample Descript A25 Received 10/30/96 <br /> Santa Rosa, CA 95405 Matrix SOLID Extracted 10/30/96 <br /> Analysis Method 8015Mod/8020 Analyzed 10/30/96 <br /> Attention Jeff Monroe Lab Number 9610150-09 Reported 10131196 <br /> DC Batch Number GC103096BTEXEXA <br /> nstrument ID GCHP06 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/K9 mg/K9 <br /> TPPH as Gas 10 1 5 <br /> Methyl t-Butyl Ether 0 025 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 00058 <br /> Xylenes (Total) 00050 00066 <br /> Chromatogram Pattern <br /> Unidentified HC C9-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 86 <br /> nalytes reported as N D were not present above the stated limit of detection <br />;EQUOIA ANALYTICAL - ELAP 41210 <br /> e Ilett <br /> rolect Manager <br /> Page 9 <br />