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Sequoia 680 Chesapeake Dnve 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 9573 <br /> X1,7 Analytical 819 Stnkcr 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 /> 3468 Mt Diablo Blvd Ste B100 Sample Descript MW7 Received 02/04/97 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/06/97 <br /> Attention Christa Marting Lab Number 9702110-11 Reported 02J1 2197 <br /> C Batch Number GCO20597BTEX02A <br /> strument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br />'Analyte Detecttiion Limit Sampleg Results <br /> BTPPH as Gas 50 71 <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 050 N D <br />'Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Weathered Gas C9-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 85 <br /> r <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> 1EQUOIA ANALYTICAL - ELAP 41210 <br /> 1 r <br /> Fol ett <br /> ect Manager Page t t <br />