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HOUSTONLABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HO <br /> O HQUS7pN TEXAS EXAS77o54 <br /> � (713)660 0901 <br /> Case Narrative for <br /> IEXXON Company U S A. <br /> Certificate of Analysis Number <br /> 01030308 <br /> Report To Pro ecct Name UP3942 1 <br /> ETIC Engineering, Inc Site 7-3942,21011019 <br /> John Ortega Site Address <br /> 2285 Morello Avenue <br /> Pleasant H[II PO Number LWR#21040414 <br /> California State California <br /> 94523. State Cert No 1903 <br /> ph (925}602-4710 fax (925) 602-4720 Date Reported 3121/01 <br /> Matrix spike(MS)and matrix spike duplicate(MSD)samples are chosen and tested at random from an analytical batch of 'like' matrix to <br /> check for possible matrix effect The MS and MSD will provide site specific matrix data only for those samples which are spiked by the <br /> laboratory Since the MS and MSD are chosen at random from an analytical batch the sample chosen for spike purposes may or may not <br /> have been a sample submitted in this sample delivery group The validity of the analytical procedures for which data is reported in this <br /> analytical report is determined by the Laboratory Control Sample(LCS)and the Method Blank(MB) The Laboratory Controi Sample (LCS) <br /> and the Method Blank(MB)are processed with the samples and the MSIMSD to ensure method cntena are achieved throughout the entire <br /> analytical process <br /> Any other exceptions associated with this report will be footnoted in the analytical resultpage(s)or the uaii control summa � <br /> Yt q ty summary page(s) <br /> . Please do not hesitate to contact us if you have any questions or comments pertaining to this data report Please reference the above <br /> Certificate of Analysis Number <br /> This report shall not be reproduced except in full, without the written approval of the laboratory The reported results are only representative <br /> of the samples submitted for testing <br /> ISPL Inc is pieased to be of service to you We anticipate working with you in fuifihng all your current and future analytical needs <br /> I <br /> 01030308 Page 1 <br /> 3121101 <br /> onia West <br /> Date <br /> Senior Project Manager <br />