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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> �"►�� 404 N Wtget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> 1Il,y Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> EA Engineering Science&Tech Client Prod ID Exxon 7-3942/5153942 1300 Sampled 02/03/97 <br /> r <br /> 68 Mt Diablo Blvd Ste 8100 Sample Descript IW1 Received 02/04/97 <br /> fayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/06/97 <br /> Attention Chnsta Marting Lab Number 9702110-13 Reported 02112f97 <br /> IC Batch Number GCO20597BTEX21A <br /> strument ID GCHP21 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Valyte Detection Limit Sample Results <br /> ug/L ug/L <br /> BPPH as Gas 500 4300 <br /> ethyl t-Butyl Ether 25 71 <br /> Benzene 5 0 48 <br /> Toluene 50 N D <br /> thyl Benzene 50 300 <br /> ylenes (Total) so 310 <br /> Chromatogram Pattern Gas <br /> urrogates Control Limits % % Recovery <br /> rifluorotoluene 70 130 90 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> 1EQUOIA ANALYTICAL - ELAP #1210 <br /> 1 F <br /> Po ett <br /> ect Manager Page 13 <br />