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s, l <br /> SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> Kapreaflan Engineering, Inc Client Project 10 Unocal Bulk Plant,2835 Navy Dr,Stockton Sampled Jul 30, 1992 <br /> 2401 Stanwell Drive, Suite 400 Sample Matrix TCLP Extract of Soil Received Jul 30, 1992 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Aug 6, 1992 <br /> Attention Mardo Kaprealian, P E First Sample# 207-1114 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample <br /> Analyte Limit I.D I D I D I D. <br /> mg/L 207-1114 207-1115 207-1116 Matrix <br /> Comp H Comp I Camp J Blank <br /> Purgeable <br /> Hydrocarbons 10 N D N D N D <br /> Benzene 0 010 N D N D N D <br /> Toluene 0 010 N D N D N D <br /> Ethyl Benzene 0 010 N D N D N D <br /> Total Xylenes 0 010 N D N D N D <br /> Chromatogram Pattern -- -- <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 10 1 0 1 0 <br /> Date Analyzed 8/4/92 8/5/92 8/5/92 8/4/92 <br /> Instrument Identification GCHP-3 GCHP-3 GCHP-3 GCHP-3 <br /> Surrogate Recovery, % 100 112 101 100 <br /> (OC 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 <br /> ott A hleffo 2071114 KEI <1> <br /> Project Manager <br />