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r <br /> 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 /> fSbS Services Client Project ID': Tosco#0788, 8203 E. 11th St. Tracy Sampled. May 6, 1997 <br /> 2401 Stanwell Dr., Ste. 300 Sample Matrix. Water Received: May 6, 1997: <br /> Concord, CA 94520 Analysis Method: EPA 3510/8015 Mod. Reported: May 23, 1997: <br /> Attention: Jarrel Crider First Sample#: 705-0462 <br /> TOTAL EXTRACTABLE PETROLEUM HYDROCARBONS <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D. I.D. I.D. I.D. I.D. I.D. <br /> Mg/L 705-0462 705-0463 705-0464 705-0465 705-0466 705-0467 <br /> U1 U2 U3* U4 U5* U6 <br /> Extractable <br /> Hydrocarbons 50 N.D. N.D. 60 N.D. 490 N.D. <br /> Chromatogram Pattern: -- Discrete Unidentified <br /> Peaks Hydrocarbons <br /> >C18 <br /> Quality Control Data <br /> Report Limit Multiplication Factor: 1.0 1.0 1.0 1.0 1.0 1.0 <br /> Date Extracted: 5/13/97 5/13/97 5/13/97 5/13/97 5/13/97 5/13/97 <br /> Date Analyzed: 5/15/97 5/15/97 5/15/97 5/15/97 5/15/97 5/15/97 <br /> Instrument Identification: HP-3A HP-3A HP-3A HP-3B HP-313 HP-313 <br /> Extractable Hydrocarbons are quantitated against afresh 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 does not appear to contain diesel."Unidentified Hydrocarbons > C18"refers to <br /> nature on Pile unidentified peaks in the total oil and grease range;"Discrete Peaks"refers to unidentified peaks <br /> Alan B. Kemp in the EPA 8270 range. <br /> Project Manager <br /> 7050462.MPD <3> <br />