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NQUSTONLAgORATORY <br /> 8880 INTERCHANGE DRIVE <br />' HOUSTON TEXAS 77054 <br /> ii (713)660 0901 <br /> Case Narrative for <br /> --� -- � EXXON Company U S A <br /> Certificate of Analysis Number <br /> 00120503 <br /> Report To Project Name UP3942 I l <br /> ETEC Engineering, Inc Site 7-3942,19902622 <br />' John Ortega Site Address 4444 W Pershing Ave <br /> 2285 Morello Avenue <br /> Stockton CA i <br /> Pleasant Hill PO Number LWR#20009574 <br /> California State California <br /> 94823- State Cert No 9903 <br />' ph (925) 602-4710 --fax-(925)977-7915 --- -- pate Reported ---- -� - <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 sampEe 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 Control Sample(LCS) <br /> and the Method Blank(MB)are processed with the samples and the MS/MSD to ensure method crrtena are achieved throughout the entire <br /> analytical process <br /> Any data flags Or quality control exceptions associated with this report will be footnoted In the analytical result page(s)or the quality control <br /> 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 Anaiysis 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 samptes submitted for testing <br /> SPL [no Is pleased to be of service to you We anticipate working with you in fulfil€ing all your current and future analytical needs <br /> I <br /> 00120503 Page 1 <br /> ��- l�-•=�-f -- - - - - -- - - --- - - - - - - --- 112101 <br /> est Sonia <br /> Date <br /> Sensor Protect Manager <br />