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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue e Suite LM • Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686 9689 <br /> AlWaprealliin Engineering, Inc Client Project ID Unocal,7303 Pacific Ave,Stockton Sampled Dec 30, 1992 <br /> 401 Stanwell Drive, Suite 400 Sample Matrix Water Received Dec 30, 1992 <br /> Concord, CA 94520 Analysis Method EPA 3510/3520/8015 Reported Jan 8, 1993 <br /> Attention Mardo Kaprealian, P E First Sample# 212-1179 <br /> TOTAL EXTRACTABLE PETROLEUM HYDROCARBONS <br /> Reporting Sample Sample <br /> Analyte Limit I D I.D. <br /> Ng/L 212-1179 Matrix <br /> MW 1 Blank <br /> Extractable <br /> Hydrocarbons 50 190 <br /> Chromatogram Pattern Discrete <br /> Peaks <br /> Quality Control Data <br /> Report Limit Multiplication (=actor 10 10 <br /> Date Extracted 1/5/93 1/5/93 <br /> Date Analyzed 1/7/93 1/7/93 <br /> Instrument Identllication HP-313 HP-3A <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 /> EQUO ANALYTICAL <br /> r <br /> o A C leffo <br /> Project Manager 2121179 KEI <t> <br />