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Sequoia 10680 Chesapeake Drive Redwood City,CA 9406(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 Sinker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> *PDS Services Client project ID Unocal#5886,2701 W March Ln,Stockton Sampled Mar 7, 1997 <br /> 2401 Stanwell Dr, Ste 300 Sample Matrix Water Received Mar 7, 1997 <br /> Concord, CA 94520 Analysis Method EPA 3510/8015 Mod Reported Mar 21, 1997 <br /> Attention Jarrel Crider First Sample# 703-0718 <br /> TOTAL EXTRACTABLE PETROLEUM HYDROCARBONS <br /> Reporting Sample Sample Sample <br /> Analyte Limit 1 D I D I D <br /> Mg/L. 703-0718 703-0719 703-0720 <br /> MW-1 MW-2 MW-3- <br /> Extractable <br /> Hydrocarbons 50 N D N D 120 <br /> Chromatogram Pattern - Diesel& <br /> Unidentified <br /> Hydrocarbons <br /> >C20 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 10 1 0 <br /> Date Extracted 3/13/97 3/13/97 3/13/97 <br /> Date Analyzed 3/14/97 3/14/97 3/14/97 <br /> Instrument Identification HP-3A HP-3A HP-3A <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 appears to contain diesel and non-diesel mixtures "Unidentified Hydrocarbons <br /> l4bignature on File >C20"refers to unidentified peaks in the total oil and grease range, <br /> Alan B Kemp <br /> Project Manager <br /> 7030718 MPD <5> <br />