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1 <br /> HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> O HOUSTON TEXAS 77054 <br /> '713)666 0901 <br /> Case Narrative for <br />' - — EXXON Company U 5 A <br /> Certlftate of Analysis Number — - - <br />' -- - _01020792 - - - -- <br /> Report Too Pro ect Name UP3708 1 <br /> ETIC Engineering Inc Site 7 3708,21011021 <br /> John Ortega Site Address 2705 Country Club <br /> 2285 Morello Avenue <br /> Stockton CA <br /> Pleasant Hill PO Number LWR#21040103 <br /> California State California <br /> 94523- State Cert No 1903 <br />' ph (925) 602-4710 fax (925) 602-4720 — Date Reported 3!19/01 - <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 b,, 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 rcl <br /> have been a sample submitted in this sample delivery group The validity of the analytical procedures for which aata is reported in tl is <br /> analytical report is determined by the Laboratory Control Sample l and the Method Blank (MB) The Laboratory Control Sample (LuS) <br /> and the Method Blank (MB)are processed with the samples and the MS'MSD to ensure method criteria are achieved througrou'the ertive <br /> t analytical process <br /> Any other exceptions associated with this report will be footnoted in the analytical result page(s)or the quality control'summary p2get5! <br /> Please do not hesitate to contact us if you have any questmrs or comments pertaining to this da'a report r1iease reference the above <br />'• Certificate of Analysis Number <br /> This report shall not be reproduced exce 1t in fui, -without the vAirten approval of`he Ia,3ora>or, —re reported esuit5 are only e,r esertati-e <br /> of the samples submitted for testing <br />' SPL me is pleased to be of service to you We anucipaie vorking .vith you in tulfi;ling all your car ent anc future analytics leeas <br /> I <br /> I <br /> / 01020792 Page 1 <br /> `��C--Y r� �_ ((t___,,,yyy-... --��►r-` x. <br /> 3/19/01 <br /> Sonia West !! <br /> ' Senior Project Manager <br /> Date <br /> I <br />