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ID <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 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Touchstone Developments Client Prol iD Chevron 9-8264 /9-8264 Sampled 02/09/96 <br /> 17170 Keaton Ave Sample Descript B-2-W Received 02/09/96 <br /> Sonoma CA 95476 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/14/96 <br /> Attention Tim Walker Lab Number 9602708-21 Reported 02J23196 <br /> C Batch Number GCO21496BTEX17A <br /> strument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte DetectionLimit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 125 380 <br /> Methyl t-Butyl Ether 62 510 <br /> Benzene 1 2 150 <br /> Toluene 12 N D <br /> Ethyl Benzene 12 N D <br /> Kylenes (Total) 1 2 51 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 118 <br />• <br /> alytes reported as N D were not present above the stated limit of detection <br /> EQUOIA ANALYTICAL - ELAP 01210 <br /> vin Follett <br /> Manager Page 22 <br /> A <br />