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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N W,get Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> jj%O Analytical 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 92t 0100 <br /> i <br /> EA Engineering Science &Tech Client Prol ID Exxon 7-3942, 51539 42 1300 Sampled 08/26/97 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript V2 Received 08/27/97 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 09/02/97 <br /> Attention Christa Marting Lab Number 9708E45-11 Reported 09104j97 <br /> InC Batch Number GC090297BTEX18A <br /> strument ID GCHP18 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> IAnalyte Detection Limit Sample Results <br /> ug/L. ug/L <br /> TPPH as Gas 50000 270000 <br /> Methyl t-Butyl Ether 500 N D <br /> Benzene 500 9900 <br /> Toluene 500 45000 <br /> Ethyl Benzene 500 7300 <br /> Xylenes (Total) <br /> Pattern 500 40000 <br /> Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 97 <br /> lie <br />�r <br /> Analytes reported as N D were not present above the stated limit of detection <br /> hU01A ANALYTICAL - ELAP #1210 <br /> Ri� Herling <br /> r Manager <br /> Page 9 <br />