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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> SPDS Services Client Project Il) Unocal#0123, 1034 Central Ave Tracy Sampled Sep 3, 1997 <br /> 2401 Stanwell Dr, Ste 300 Sample Matrix Water Received Sep 3, 1997 <br /> Concord, CA 94520 Analysis Method EPA 3510/8015 Mod Reported Sep 25, 1997 <br /> Attention Jarrel Crider First Sample # 709-0187 <br /> TOTAL EXTRACTABLE PETROLEUM HYDROCARBONS W/ SILICA GEL CLEANUP <br /> Reporting Sample Sample Sample Sample <br /> Analyte Limit I D I D I D I D <br /> erg/L 709-0187 709-0188 709-0189 709-0190 <br /> U-1 U-2 U-3 U-4* <br /> Extractable <br /> Hydrocarbons 50 N D N D N D 160 <br /> Chromatogram Pattern -- - Unidentified <br /> Hydrocarbons <br /> <C15 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 10 1 0 1 0 <br /> Date Extracted 9/8/97 9/8/97 9/8/97 9/8/97 <br /> Date Analyzed 9/9/97 9/9/97 9/9/97 9/9/97 <br /> Instrument Identification HP-3A HP-3A HP-3A HP-3A <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 ANALYTICAL, #1271 Please Note <br /> *This sample does not appear to contain diesel "Unidentified Hydrocarbons <C15 <br /> �gnature on File are probably gasoline <br /> Alan B Kemp <br /> Project Manager <br /> 7090187 MPD <4> <br />