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15) 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 /> IFWAnalytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> i <br /> Touchstone Developments Client Prod ID Chevron 9-8264 /9-8264 Sampled 02/06/96 <br /> 17170 Keaton Ave Sample Descript MW-4-10 0 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 9602708-12 Reported 02j23196 <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/Kg mg/Kg <br /> TPPH as Gas 1 0 N D <br /> Methyl t-Butyl Ether 0 025 0 069 <br /> Benzene 00050 0 020 <br /> Toluene 00050 <br /> ND <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 100 <br /> alytes reported as N D were not present above the stated limit of detecDon <br /> EQUOIA ANALYTICAL - ELAP 01210 <br />)v1n Follett <br /> qct Manager Page 13 <br /> s <br /> t� <br />