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D4 SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> Kapreallan Engineering;Inc Client Project ID Unocal Bulk Plant,2835 Navy Or,Stockton Sampled Jul 30, 1992 <br /> 2401 Stanwell Drive, Suite 400 Sample Matrix Sod Received Jul 30, 1992 <br /> Concord, CA 94520 Analysis Method EPA 3550/8015 Reported Aug 6, 1992 <br /> Attentlon Mardo Kaprealian, P E First Sample # 207-1114 <br /> TOTAL EXTRACTABLE PETROLEUM HYDROCARBONS <br /> Reporting Sample Sample Sample Sample <br /> Analyte Limit I D LD I D 1.10 <br /> mg/kg 207-1114 207-1115 207-1116 Matrix <br /> Comp H Comp I Comp J Blank <br /> Extractable <br /> Hydrocarbons 10 98 24 47 <br /> Chromatogram Pattern Diesel& Diesel& Diesel& <br /> Non-Diesel Non-Diesel Non Diesel <br /> Mixture Mixture Mixture <br /> (>020) (>C20) (>C20) <br /> Quality Control Data <br /> l <br /> Report Limit Multiplication Factor 10 10 10 1 0 <br /> Date Extracted 7/31/92 7/31/92 7/31/92 7/31/92 <br /> Date Analyzed 8/4/92 8/4/92 8/4/92 8/4/92 <br /> Instrument Identification HP-36 HP-313 HP-3B HP-36 <br /> Extractable Hydrocarbons are quantitated against a fresh diesel standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUO ANALYTICAL <br /> tt A hieffa 2071114 KEi <2> <br /> Project Manager <br />