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Sequoia 680 Chesapeake Drive Rcdwood City CA 94063 (4151 3o4 9600 FAX (4 15) 364 9233 <br /> 404 N Wtgct lane Walnut Creek CA 94593 (510) 9R4 9600 FAX (510) 988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 9:1 9600 FAX (916) 921 0100 <br /> Environmental Resolutions Client Prol ID Unocal 5886 205503 Sampled 04/15/97 <br /> 74 Digital Drive Suite 6 Sample Descrlpt S 10585 Received 04/18/97 <br /> Novato CA 94949 Matrix SOLID Extracted 05/02/97 <br /> Analysis Method 8015Mod/8020 Analyzed 05/03/97 <br /> Attention Keith Romstad Lab Number 9704G03 02 Reported 05/05f97 <br /> OC Batch Number GCO502976TEXEXA <br /> Instrument ID GCHP07 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/K9 <br /> TPPH as Gas 1 0 N D <br /> Methyl t Butyl Ether 0 025 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 <br /> Xylenes (Total) 00050 N D <br /> ND <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trlfl uorotoluene 70 130 85 <br /> 4-Bromofluorobenzene 60 140 83 <br /> analytes reported as N 0 were not present above the stated limit of de'ection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Ovin Follett <br /> oleo Manager <br /> Page <br />