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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> Analytical 1900 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Oapreailan Engineering, Inc Client Project ID Unocal#5098,5606 Pacific Ave, Stockton Sampled Jul 13-14, 1994 <br /> 2401 Stanwell Dr, Ste 400 Sample Matrix Soil Received Jul 15, 1994 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported JUI 29, 1994 <br /> Attention Avo Avedissian First Sample # 407-0713 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I D I D I D I D <br /> mg/kg 407-0713 407-0714 407-0715 407-0716 407-0717 407-0718 <br /> MW 15(35) MW 15(40) MW 15(45) MW 15(50) MW 15(55) MW 15(60 5) <br /> i <br /> Purgeable <br /> Hydrocarbons 1 0 N D N D N D N D N D N D <br /> Benzene 00050 N D N D N D N D N D N D <br /> Toluene 00050 N D N D N D N D N D N D <br /> Ethyl Benzene 00050 N D N D N D N D N D N D <br /> Total Xylenes 00050 N D N D N D N D N D N D <br /> Chromatogram Pattern - - <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 1 0 1 0 1 0 <br /> Date Analyzed 7/27/94 7/27/94 7/27/94 7/27/94 7/27/94 7/27/94 <br /> Instrument Identification HP-4 HP-4 HP-4 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, % 96 99 100 99 97 98 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA A YTI CAL, #1271 <br /> Ian Kemp <br /> Prosect Manager <br /> ` 4070695KEI <4> <br />