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C A M B R I A <br /> laboratory report for the required samples taken on March 30, 2005 is presented in Appendix A <br /> Monthly Flow Data Between February 28 and March 30, 2005, the total discharge to the sanitary <br /> sewer was 634 gallons, which corresponds to an average flow rate of 0 01 gallons per minute <br /> Discussion Cambria shut the GWE system down on February 28,2005,due to an LEL meter sensor <br /> error While the system was shirt down, Cambria implemented carbon replacement activities on <br /> March 18, 2005 The systein remained off after the completion of carbon replacement activities, <br /> pending replacement of the LEL meter sensor On March 30,2005,Cambria installed a replacement <br /> LEL sensor, operated the GWE system for several hours until a representative sample could be <br /> obtained, and collected monthly samples The LEL sensor calibration record is included as <br /> Appendix B <br /> Since Christine White and Karen Petryna no longer work for Shell,a new certification authorization <br /> letter has been executed between Karen Lyons (the current applicable corporate officer) and Denis <br /> Brown (the current environmental engineer) The signed letter is included as Appendix C <br /> 0 <br /> 0783 2 <br />