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j SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> IsKaprealian Engineering, Inc Client Project ID Unocal#5421,7303 Pacific Ave,Stockton Sampled Nov 10, 1992 <br /> 2401 Stanwell Drive, Suite 400 Sample Matrix Sod Received Nov 11, 1992 <br /> Concord, CA 94520 Analysis Method EPA 3550/8015 Reported Nov 25, 1992 <br /> Attention Mardo Kaprealian, P E First Sample# 211-0490 <br /> TOTAL EXTRACTABLE PETROLEUM HYDROCARBONS <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 211-0490 211-0491 211-0492 211-0493 211-0494 211-0495 <br /> EB3-(35) EB3-(40) EB3-(45) EB3-(50) EB3-(55) E53-(58) <br /> Extractable <br /> Hydrocarbons 1 0 N D N D N D N D N D N D <br /> Chromatogram Pattern <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 1 0 10 1 0 1 0 1 0 <br /> Date Extracted 11/18/92 11/18/92 11/18/92 11/18/92 11/18/92 11/18/92 <br /> Date Analyzed 11/20/92 11/20/92 11/20/92 11/20/92 11/20/92 11/20/92 <br /> Instrument Identification HP-3A HP-3A HP-3A HP-313 HP-313 HP-3B <br /> I <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 /> I <br />�5E000 ANALYTICAL <br /> I <br /> Sco Chleffo <br /> Project Manager 2110460 KEI <12> <br />