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Sequoia 690 Chesapeake Drive Redwood Cicy CA 94063 (+15� >o4 9o00 FAX(413) 364 9233 <br /> 1900$at:s avenue Since L concord CA 94320 (3I01 530 9000 FAX N310) 686 9689 <br /> Analytical 819 Scnker kvenue Suite 3 Sacramento CA 93334 (9W 921 9600 FaX,916) 921 0100 <br /> EA Engineering Science&Tech Client Prol ID 83739421307, Exxon 7-3942 Sampled 02/17/95 _ <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript MW-1 Received 02/21/95 <br /> Lafayette, CA 94549 Matrix LIQUID _ <br /> Analysis Method 8015Mod/8020 Analyzed 02/23/95 <br /> Attention M Cravink _ Lab Number 9502C36-12 Reported 02/27/95 <br /> IQ-C Batch Number GCO22395BTEX06A <br /> Instrument ID GCHP06 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br />' Analyte Detection Limit Sample Results <br /> ug/L ug/L <br />' TPPH as Gas 50 480 <br /> Benzene 0 50 N D <br /> Toluene 050 0 98 <br /> Ethyl Benzene 0 50 1 1 <br />' Xylenes (Total) 050 1 1 <br /> Chromatogram Pattern <br /> Gas & Non Gas Mix <C8 <br />' Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 1900 <br /> 1 <br /> 1 <br /> alytes reported as were not present above the stated limit of detection <br /> SEQUOI ALYTICAL - ELAP #1210 <br /> rroj 'n"neaChin <br /> ect Manager Page 12 <br />