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- a Sequoia 0 680 Chesapeake Drive Redwood City CA 94011 (415) 364 9600 FAX(415)364 9233 <br /> 404 N Wiget Lane Walnut Creek, CA 94598 (510) 986 9600 FAX{510}988 9673 <br /> Analytical 819 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> *PbS Services Client Project Ib Unocal#ssa6,2701 W March Ln,Stockton Sampled Sep 2, 1997 <br /> 2401 Stanwell Dr, Ste 300 Sample Matrix Water Received Sep 2, 1997 <br /> Concord, CA 94520 Analysis Method EPA 3510/3520/8015 Reported Sep 17, 1997 <br /> Attention Jarrel Crider First Sample# 709-0248 <br /> TOTAL EXTRACTABLE PETROLEUM HYDROCARBONS <br /> Reporting Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I D. I D I D <br /> Mg/L 709-0248 709-0249 709-0250 709-0251 709-0252 <br /> MW-55 MW-60" MW-6S MW-7D MW-7S <br /> Extractable <br /> Hydrocarbons 50 N D 740 N D N D N D <br /> Chromatogram Pattern -- Diesel& -- - <br /> Discrete Peaks <br /> • <br /> I <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 10 1 0 10 10 <br /> Date Extracted 9/9/97 9/9/97 9/9/97 9/9/97 9/9/97 <br /> Date Analyzed 9/10/97 9/10/97 9/10/97 9/10/97 9/10/97 <br /> Instrument Identification HP-313 HP-36 HP-3B 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 /> SEQUOIA ANALYTICAL, #1271 Please Note <br /> "This sample appears to contain diesel and non-diesel mixtures "Discrete Peaks'refers to <br /> nature on File unidentified peaks in the EPA 8270 range <br /> Alan B Kemp <br /> Project Manager <br /> 7090242 MPD <6> <br />