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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> 4aprealian Engineering, Inc Client Project Ib 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 # 511-2091 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I D 1 D I D <br /> mg/kg 511-2091 511-2092 511-2093 511-2094 511-2095 <br /> MW 17 (40) MW 17 (45) MW 17 (50) W 17(52 5) MW 17 (55) <br /> Purgeable <br /> Hydrocarbons 10 N D N D N D N D N D <br /> Benzene 00050 N D N D N D N D N D <br /> Toluene 00050 N D N D N D N D N D <br /> Ethyl Benzene 00050 N D N D N D N D N D <br /> .Total Xylenes 00050 N D N D N D N D N D <br /> Chromatogram Pattern <br /> Quality Control Data i <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 1 0 1 0 <br /> Date Analyzed 12/4/95 12/4/95 12/4/95 12/4/95 12/4/95 <br /> Instrument Identification HP-2 HP-2 HP-2 HP-2 HP-2 <br /> Surrogate Recovery, % 103 102 101 107 103 <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 B Km <br /> Project Mana er <br /> 5112073 KEI <4> <br />