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4D <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 %73 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> i <br /> Touchstone Developments Client Prol ID Chevron 9-2033, 2033-2 Sampled 11/11/96 <br /> P O Box 2554 Sample Descript A35 Received 11/12/96 <br /> Santa Rosa, CA 95405 Matrix SOLID Extracted 11/13/96 <br /> Analysis Method 8015Mod/8020 Analyzed 11/13/96 <br /> Attention Jeff Monroe Lab Number 9611596-06 Reported 11J14j96 <br /> C Batch Number GC1 1 1396BTEXEXA <br /> strument ID GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <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 /> Tritluorotoluene 70 130 98 <br /> • <br /> ialytes reported as N 0 were not present above the stated limit of detection <br /> EQUOIA ANALYTICAL - ELAP #1210 <br /> } <br /> ivi llett <br />,olect Manager <br /> Page ti <br />