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• Test Methods for Evaluating Solid Wastes: Physical/Chemical Methods, USEPA <br /> SW-846,3rd edition,November 1986 <br /> The laboratories selected to perform the analytical work will be certified by the Department of <br /> Health Services (DHS) for hazardous waste testing. Table A-2 summarizes the analytical test <br /> methods to be used and the maximum sample holding times that will be observed. <br /> QUALITY ASSURANCE/QUALITY CONTROL <br /> Quality assurance/quality control (QA/QC)measures will be taken to confirm the integrity of the <br /> ' field and laboratory data generated during the monitoring program. The procedures used to assess <br /> data quality are described in this section.An evaluation of the field and laboratory quality assurance <br /> data will be included in the technical reports. <br /> Field Quality Assurance Procedures <br /> Field QA procedures will be included in each monitoring event and include the documentation of <br /> field instrument calibration. <br /> Laboratory uliAssurance Procedures <br /> Laboratory QA procedures will include those required under the DHS hazardous waste testing <br /> program. Specific laboratory QA procedures are included in the laboratory QA manual for <br /> surrogate recoveries,matrix spike recoveries,and matrix spike duplicate(or duplicate)results. <br /> Method blanks will be analyzed daily to assess the effect of the laboratory environment on the <br /> analytical results.Method blanks will be performed for each parameter analyzed. <br /> Each sample to be analyzed for organic parameters will contain surrogate spike compounds. The <br /> surrogate recoveries will be used to determine if the analytical instruments are operating within <br /> limits. Surrogate recoveries will be compared to control limits established and updated by the <br /> laboratory based on its historical operation. <br /> Matrix spikes v611 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 will 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 will be compared to control limits established and updated by the <br /> laboratory based on its historical operation. <br /> SACS:\WES\S&APROC.DOC-95\w:l 8 <br />