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Sequoia 680 Chesapeake Drive Redwood Ciry CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytiea 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921.9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)79Z-0342 <br /> 1pettler=Plyan - bubjin ` Client Praject)b 'UnocaISS#5098, Stockton Sampled' bec'22; 1998 <br /> 6747 Sierra Court, Suite J Sample Matrix Water Received Dec 23, 1998 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod/8020 Reported Jan 13, 1999 <br /> Attention Deanna Harding First Sample # 812-2070 <br /> A� v . u <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX/ MTBE <br /> Reporting Sample Sample Sample <br /> Analyte Limit I D I.D I D <br /> Mg/L. 812-2070 812-2071 812-2072 <br /> MW-15 MW-16 MW-17 <br /> Purgeable <br /> Hydrocarbons 50 N D 56 N D <br /> Benzene 0 50 N D N D N D <br /> Toluene 050 1 0 N D 1 1 <br /> Ethyl Benzene 050 N D N D N D <br /> Total Xylenes 050 1 4 N D 2 1 <br /> MTBE 2 5 N D N D 4 0 <br /> Chromatogram Pattern - Unidentified -- <br /> Hydrocarbons <br /> C6-C8 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 <br /> Date Analyzed 1/4/99 1/4/99 1/4/99 <br /> Instrument Identification HP-5 HP-5 HP-5 <br /> Surrogate Recovery, % 93 86 85 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reportod as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL, #1271 <br /> tulianne Fegley <br /> Project Manager <br /> 8122064 GET <2> <br />