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' HOUSTON LABORATORY <br /> 6INDRIVE <br /> TERCHANGE <br /> HOUSTON TEXAS 77054 <br /> Q <br /> (713)660 09131 <br /> Case Narrative for <br />' EXXON Company U S A <br /> Certificate of Analysis Number #� <br /> 0/0/0028 <br /> F <br /> Report lit- <br /> To Project Name TM3942 311 iW <br /> I ETIC Engineering, Inc Site 7-394219902622 <br /> Reese Tisdale � Site Address 4444 W Pershing Ave <br /> 2255 Morello Avenue <br /> E Stockton CA <br /> � t <br />' PO Number LWR#21010153 <br /> Pleasant Hill <br /> California State California <br /> I <br /> 94523- <br /> State Cert No <br /> Ph (925)602 4710 fax (925)602-4720 Date Reported 1115101 <br /> There was a discrepancy in the sample ID"SB8, 1 5-2 ft"(SPL ID 01010028-08)wntten on the chain of custody and the sample ID "S88, <br /> 5 5-6 ft' written on the container received A message was left for Reese Tisdale,via voicemail on January 4 2001 Per Barry I-€amitou,via <br /> phone conversation on January 08, 2001 the correct sample ID is written on the chain of custody <br /> Your samples were subcontracted to McBride-Ratcliff and Assoaates inc for Porosity The sample(s)was assigned to their Lab No <br /> 23832-16 <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 valtdity 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 criteria are achieved throughout the entire <br /> analytical process <br /> Any other exceptions associated with this report will be footnoted in the analytical result page(s)or the quality control 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 /> Cerhflcate 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 /> SPL Inc is pleased to be of service to you We anticipate working with you in fulfilling all your current and future analytical needs <br /> 1 <br /> West Sonia <br /> Senior Project Manager <br /> Date <br />