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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM * Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> Caprealian Engineering, Inc Client Project ID Former Unocal Bulk Plant#0950,Stockton Sampled Feb 27, 1993 <br /> 2401 Stanwell Dr, Ste 400 Sample Matrix Water Received Mar 1, 1993 <br /> Concord, CA 94520 Analysis Method EPA 3510/3520/8015 Reported Mar 11, 1993 <br /> Attention Mardo Kaprealian, P E First Sample# 303-0015 <br /> TOTAL EXTRACTABLE PETROLEUM HYDROCARBONS <br /> Reporting Sample Sample <br /> Analyte Limit I D I D <br /> pg/L 303-0015 Matrix <br /> MW 7 Blank <br /> Extractable <br /> Hydrocarbons 50 N D <br /> Chromatogram Pattern -- <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 10 <br /> Date Extracted 3/5/93 3/5/93 <br /> Date Analyzed 3/9/93 3/9/93 <br /> Instrument Identification HP-3A HP-3B <br /> Extractable Hydrocarbons are quantitated against afresh diesel standard <br /> Analytes reported as N 0 were not detected above the stated reporting limit <br /> 7c'E 'A <br /> ANALYTICAL <br /> rott A Chieff <br /> Project Manager 3030009 KEI <4> <br />