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sampling event. Sample blanks and blind duplicate samples shall be analyzed for volatile <br /> organic compounds (VOCs) by EPA Method 8010/8020. <br /> laboratory Quality Assurance Procedures <br /> Laboratory QA procedures shall include those required under the DHS hazardous waste testing <br /> program. Specific laboratory QA procedures shall be included in the laboratory QA manual for <br /> surrogate recoveries, matrix spike recoveries, and matrix spike duplicate (or duplicate) results. <br /> Method blanks shall be analyzed daily to assess the effect of the laboratory environment on the <br /> analytical results. Method blanks shall be performed for each parameter analyzed. <br /> Each sample to be analyzed for organic parameters will contain surrogate spike compounds. The <br /> surrogate recoveries shall be used to determine if the analytical instruments are operating within <br /> limits. Surrogate recoveries shall be compared to control limits established and updated by the <br /> laboratory based on its historical operation. * <br /> Matrix spikes shall be analyzed at a frequency of approximately 10 percent. Matrix spike results <br /> will be evaluated to determine whether the sample matrix is interfering with the laboratory <br /> analysis and to provide a measure of the accuracy of the analytical data. Matrix spike recoveries <br /> will be compared to control limits established and updated by the laboratory based on its <br /> historical operation. <br /> Laboratory duplicates shall be analyzed at a frequency of approximately 10 percent. Spike <br /> duplicate results will be evaluated to determine the reproducibility (precision) of the analytical <br /> method. Reproducibility values shall be compared to control limits established and updated by <br /> the laboratory based on its historical operation. <br /> All Laboratory QA/QC data shall be reported and included with the certified analytical results <br /> to which it applies, including the method, equipment, and analytical detection limits. This <br /> QA/QC data shall include the results of method blanks, surrogate spike recoveries (for organic <br /> parameters only), matrix spike recoveries, and matrix spike duplicates, and an explanation for <br /> any recovery rate that is less than 80%, the frequency of quality control analysis, and the name <br /> and qualifications of the person(s) performing the analyses. Sample results shall be reported <br /> unadjusted for blank results or spike recovery. <br /> I-Wonrra"URMC".TCY D-6 Novaubw 23,IM <br />