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Sequoia 680 Chesapeakc Drive Redwood Ctty CA 94063 (415) 364 9600 FAX(4 1.5) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> loco Analytical 819 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> 0 <br /> Touchstone Developments Client Prol ID Chevron 9-8264 / 9-8264 Sampled 02/06/96 <br /> 17170 Keaton Ave Sample Descrlpt B-1-9 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 9602708-02 Reported 02123f96 <br /> C Batch Number GCO21396BTEXEXB <br /> istrument ID GCHP18 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/K9 mg/Kg <br /> TPPH as Gas 25 13 <br /> Methyl t-Butyl Ether 0 062 N D <br /> Benzene 0 012 N D <br /> Toluene 0 012 N D <br /> Ethyl Benzene 0 012 0 050 <br /> Xylenes (Total) 0 012 0 15 <br /> chromatogram Pattern <br /> Weathered Gas C7-C12 <br /> Surrogates Control Limits % % Recove <br /> rri#luorotoluene 70 130 103 <br /> alytes reported as N D were not present above the stated limit of detection <br /> EQUOIA ANALYTICAL - ELAP 111210 <br /> win Follett <br /> qct Manager Page 3 <br />