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Sequoia 6W Che,%apeaiCe Dirt" Rojwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N %Viget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Sdiker Avenue suite 8 Saaamento,CA 95834 (916)921-9600 FAX`916)921-0100 <br /> 1455 McDowell Eeo North.Ste D Petaluma.CA 94954 (707 79I-1865 FAX 707 792-0342 <br /> EA Engineering Science &Tech Client Prof ID Exxon7-0137, 5150137 1300 Sampled 01/26/99 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript TripBlank Received 01/28/99 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 01/30/99 <br /> Attention Matt Derby Lab Number 9901D89-09 _ Reported 02103199 <br /> oC Batch Number GC012999BTEX30A <br /> Instrument ID GCHP30 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limas% % Recovery <br /> Trifluorotoluene 70 130 74 <br /> t <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Oct Manager Page s <br />