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' Sequoia680 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 Stnker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Vii-or <br /> QPD8 Services Client Project ID Unocal#0123 1034 Central Ave ,Tracy Sampled Mar 3, 1997 <br /> 2401 Stanwell Dr , Ste 300 Sample Matrix Water Received Mar 3, 1997 <br /> Concord, CA 94520 Analysis Method EPA 3510/8015 Mod Reported Mar 19, 1997 <br /> Attention Jarrel Crider First Sample # 703-0493 <br /> TOTAL EXTRACTABLE PETROLEUM HYDROCARBONS W/SILICA GEL CLEAN-UP <br /> Reporting Sample Sample Sample Sample <br /> Analyte Limit I D I D I D I D <br /> Mg/L 703-0493 703-0494 703-0495 703-0496 <br /> U-1 U-2 U-3 U-4- <br /> Extractable <br /> Hydrocarbons 50 N D N D N D 2,500 <br /> Chromatogram Pattern Diesel & <br /> Unidentified <br /> Hydrocarbons <br /> <C15 <br /> S <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 10 1 0 1 0 <br /> Date Extracted 3/10/97 3/10/97 3/10/97 3/10/97 <br /> Date Analyzed 3/13/97 3/13/97 3/13/97 3/13/97 <br /> Instrument Identification HP-313 HP-313 HP-313 HP-313 <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 "Unidentified Hydrocarbons <br /> nature on File <C15 are probably gasoline <br /> Alan B Kemp <br /> Project Manager <br /> 7030493 MPD <4> <br />