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Al SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue a Suite LM • Concord,California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> prealian Engineering, Inc Client Project ID Unocal, 2835 Navy Dr, Stockton Sampled May 28, 1993 <br /> 401 Stanwell Dr, Ste 400 Sample Matrix Water Received May 29, 1993 <br /> Concord, CA 94520 Analysis Method EPA 3510/3520/8015 Reported Jun 8, 1993 <br /> Attention Mardo Kaprealian, P E First Sample # 305-1497 <br /> TOTAL EXTRACTABLE PETROLEUM HYDROCARBONS <br /> Reporting Sample Sample <br /> Analyte Limit ID ID <br /> erg/L 305-1497 Matrix <br /> MW -7 Blank <br /> Extractable <br /> Hydrocarbons 50 N D <br /> Chromatogram Pattern -- <br /> 0 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 10 <br /> Date Extracted 6/4/93 6/4/93 <br /> Date Analyzed 6/8/93 6/8/93 <br /> Instrument Identification HP-3A HP-36 <br /> Extractable Hydrocarbons are quantitated against a fresh diesel standard <br /> Analytes reported as N 0 were not detected above the stated reporting limit <br /> SEQUOIA ANAL ICAL <br /> 0 <br /> co �effo <br /> Project Manager <br /> 3051491 KEI <4> <br />