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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wtget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> vo- Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> 4apreallan Engineering, Inc Client Project ID Unocal#5098,5606 Pacific Ave,-Stockton Sampled Nov 20, 1995 <br /> 2401 Stanwell Dr, Ste 400 Sample Matrix Soil Received Nov 21, 1995 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Dec 6, 1995 <br /> Attention Dennis Royce First Sample # 511-2079 <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 511-2079 511-208 511-2081 511-2082 511-2083 511-2084 <br /> MW 16 35 MW 1 (40 MW 16 (45) MW 16 (50) MW 16 (52) MW 17 (5) <br /> Purgeable <br /> Hydrocarbons 10 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 00055 / 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 0 0061 ./ N D N D N D N D <br /> Chromatogram Pattern <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 10 10 10 10 10 <br /> i <br /> Date Analyzed 12/2/95 12/2/95 12/2/95 12/2/95 12/2/95 12/2/95 <br /> Instrument Identification HP-5 HP-5 HP-5 HP-5 HP-2 HP-2 <br /> Surrogate Recovery, % 88 91 88 92 106 103 <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 ANALYTICAL, #1271 <br /> A Ke p <br /> Project Mana er <br /> 5112073 KEI <2> <br />