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' Sequoia 690 Chesapeake Dnvc Redwood City CA 94063 (415) 364 9600 FAX{413) 364 9233 <br /> 404 ` ',get Lane Walnut Creek CA 94698 (310) 999 9600 FAX(310)989-9673 <br /> Anaiytiea 819 Striker Avenue Suit:8 Sacramento CA 93334 (916) 921 94500 FAX(916) 921 0100 <br /> EA Engineering Science &Tech Client Prod ID Exxon 7-3942/8373942 1307 Sampled 10/19/95 <br />' 3468 Mt Diablo Blvd Ste 8100 Sample Descript 3942 IW1PP Received 10/20/95 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 10/25/95 <br />' Attention Tracy Faulkner Lab Number 951OF30-21 Reported 10127/95 <br /> QC Batch Number GC1025956TEX02A <br /> Instrument ID GCHP02 <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 500 4000 <br /> Methyl t-Butyl Ether 25 43 <br /> Benzene 5 0 29 <br /> Toluene 50 N D <br /> Ethyl Benzene 50 370 <br /> Xylenes (Total) 50 370 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 102 <br /> 1 <br /> 1 <br />' Analytes reported as N D were not present above the stated 1imit of detection <br /> SEQUOI A CAL ELAP #1210 <br /> 7 <br /> Penner <br /> Feggy <br /> rotect Manager page 2 <br />