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Sequoia 680 Chesapeake Drive Redwood Gcy CA 94063 (415) 364 9000 Fax(415) 364 9233 <br /> 304 N Wigec Lane Walnut Creek CA 94599 (510) 988 9600 FA6X(510) 988 9673 <br /> X111 Analytical 819 Scnker Avcnue Suice 9 Sacramento CA 95834 (916) 921 9600 FAX Ow 921 Oioo <br /> _ EA Engineering Science &Tech Client Prol ID Exxon 7-3942/8373942 1307 - Sampled 10%19/95 <br /> 3468 Mt Diablo Blvd Ste 8100 Sample Descript 3942 MW13PP Received 10/20/95 - <br /> Lafayette, CA 94549 Matrix LIQUID <br /> _ Analysis Method 8015Mod/8020 Analyzed 10/24/95 _ <br /> Attention Tracy Faulkner Lab Number_ 951OF27-03 _ _ Reported 10J27J95 _ <br /> CC Batch Number GC102495BTEX20A - - <br /> Instrument ID GCHP20 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limtt Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <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 /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 93 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQU A AL YT CAL - ELAP #1210 <br /> g y Penner <br /> Project Manager Page 3 <br />