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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 /> Kaprealian Engineering, Inc Client Project ID Unocal#5421,7303 Pacific Ave , Stockton Sampled 11/9&11/10/92 <br /> 2401 Stanwell Drive, Suite 400 Sample Matrix Water Received Nov 11, 1992 <br /> Concord, CA 94520 Analysis Method EPA 3510/3520/8015 Reported Nov 24, 1992 <br /> Attention Mardo Kaprealian, P E First Sample# 211-0458 <br /> TOTAL EXTRACTABLE PETROLEUM HYDROCARBONS <br /> Reporting Sample Sample Sample <br /> Analyte Limit I D I D I D <br /> pg/L 211-0458 211-0459 Matrix <br /> EB 3 EB 4 Blank <br /> Extractable <br /> Hydrocarbons 50 N D N D <br /> Chromatogram Pattern -- -- <br /> Quality Control Data <br /> Report Limn Multiplication Factor 10 1 0 1 0 <br /> Date Extracted 11/16/92 11/16/92 11/16/92 <br /> Date Analyzed 11/19/92 11/19/92 11/19/92 <br /> Instrument Identification HP-313 HP-313 HP-313 <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 /> SEQUOIA ANALYTICAL <br /> colt A o <br /> Project Manager 2110456KE; 42> <br />