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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wrget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> �lll� Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Touchstone Developments Client Prof ID Chevron 9-8264 /8264 Sampled 02/07/96 <br /> 17170 Keaton Ave Sample Descript B-4-13 5 Received 02/09/96 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 02/13/96 <br /> Analysis Method 8015Mod/8020 Analyzed 02/14/96 <br /> Attention Tim Walker Lab Number 9602707-14 Reported 02116196 <br />)C Batch Number GCO21396BTEXEXB <br /> lstrument ID GCHP18 <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 0 025 020 <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) <br /> 00050 <br /> ND <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trlflucrotoluene 70 130 80 <br /> alytes reported as N D were not present above the stated limit of detection <br /> EQUOIA ANALYTICAL - ELAP #1210 <br /> Y"' At� <br /> win Follett <br /> oft Manager Page 16 <br /> OD <br />