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Laboratory Quality Assurance Procedures <br /> Laboratory quality assurance procedures will include those required under the DHS <br /> hazardous waste testing program. Specific laboratory quality assurance procedures are <br /> included in the laboratory QA manual for surrogate recoveries, matrix spike recoveries, <br /> and matrix spike duplicate (or duplicate) results. <br /> Method blanks will be analyzed daily to assess the effect of the laboratory environment <br /> on the analytical results. Method blanks will be performed for each parameter analyzed. <br /> Each sample to be analyzed for organic parameters will contain surrogate spike <br /> compounds. The surrogate recoveries will be used to determine if the analytical <br /> instruments are operating within limits. Surrogate recoveries will be compared to control <br /> Emits established and updated by the laboratory based on its historical operation. <br /> Matrix spikes will be analyzed at a frequency of approximately 10 percent. Matrix spike <br /> results will be evaluated to determine whether the sample matrix is interfering with the <br /> laboratory analysis and to provide a measure of the accuracy of the analytical data.Matrix <br /> spike recoveries will be compared to control limits established and updated by the <br /> laboratory based on its historical operation. <br /> Laboratory duplicates will be analyzed at a frequency of approximately 10 percent. Spike <br /> duplicate results will be evaluated to determine the reproducibility (precision) of the <br /> analytical method. Reproducibility values will be compared to control limits established <br /> and updated by the laboratory based on its historical operation. <br /> Laboratory QC data will be included with the analytical results. This QC data will include <br /> method blanks, surrogate spike recoveries (for organic parameters only), matrix spike <br /> recoveries, and matrix spike duplicates. <br /> SACIpR093M390040.6ei-93 1fc-.3 A-9 Rev.0 November 12, 1993 <br />