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4D 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 /> Analytical 819 Stnker Avenue Suite 8 Sacramento, CA 95834 (916) 921-9600 FAX (916)921 0100 <br /> Touchstone Developments Client Prod ID Chevron 9-2033, 2033-2 Sampled 11/11/96 <br /> P O Box 2554 Sample Descript A38 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 9611596-09 Reported 11114196 <br />)C Batch Number GC1 1 1396BTEXEXA <br /> istrument 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) <br /> Pattern D 0050 N D <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 96 <br /> 0 <br />-ialytes reported as N D were not present above the stated limit of detection <br />,EQUOIA ANALYTICAL - ELAP 901210 <br /> Am <br /> e II ett <br /> roject Manager Page 9 <br /> 1991 <br />