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- , Sequoia 640 Chtweakc Dr vc Rcd�onki City CA 94063 (4 15) 364 9600 FAX(415) 364 9233 <br /> 404 H Wiget Lane Walnut Creck CA 94598 (5 10 944 9+,00 FAX(5 10) 9A8 9673 <br /> Analytical 819 Straker Avenue Suite 8 Sacramento CA 95834 (916) 921 96110 IAX (91t)) 921 01V) <br /> 101 <br /> Environmental Resolutions Client Prod ID Unocal 5886 205503 Sampled 04/15/97 <br /> 74 Digital Drive Suite 6 Sample Descrlpt S 5 5 85 Received 04,118/97 <br /> Novato CA 94949 Matrix SOLID Extracted 05/01/97 <br /> Analysis Method 8015Mod/8020 Analyzed 05/01/97 <br /> Attention Keith Romstad Lab Number 9704B14 02 Reported 05/01/97 <br /> OC Batch Number GC050197BTEXEXA <br /> Instrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <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 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 94 <br /> 4-Bromofluorobenzene 60 140 62 <br /> 11* <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> vin Follett <br /> Project Manager Page s <br />