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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 94.598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Touchstone Developments Client Proj ID Chevron 9-2033' 2033-2 Sampled 11/11/96 <br /> P O Box 2554 Sample Descrlpt A37 Received 11/12/96 <br /> Santa Rosa, CA 95405 Matrix SOLID Extracted 11/13/96 <br /> Analysis Method 8015Mod/8020 Analyzed 11/14/96 <br /> Attention Jeff Monroe Lab Number 9611596-08 Reported 11j1 4196 <br />)C Batch Number GC1 1 1396BTEXEXA <br /> istrument ID GCHP07 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Lima Sample Results <br /> mg/Kg mg/K9 <br /> TPPH as Gas 1 0 N D <br /> Methyl t-Butyl Ether 0 025 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 100 <br /> 0 <br /> ialytes reported as N D were not present above the stated limit of detection <br /> EQUOIA ANALYTICAL - ELAP #1210 <br />,v Ilett <br /> olect Manager <br /> Page 8 <br />