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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 Quality Assurance 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 will 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 />1 SAC\S:\WES\S&APR0C.D0C-95\w:1 8 <br />