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3.3 Laboratory Quality Control <br />To provide quality control for the analytical results, the following measures will be taken: <br />➢ All sample analyses will be conducted by State -certified laboratory. <br />➢ The laboratory will be certified in the analytical method(s) requested. <br />➢ The laboratory will follow industry standard quality assurance and quality control <br />methods <br />The analytical laboratory will perform Quality Control (QC). At a minimum the QC will include <br />project specific QC, method blank results, laboratory control spike, and matrix spike results. <br />1. Method Blank Results —A method blank is a laboratory -generated sample that assesses <br />the degree to which laboratory operations and procedures cause false -positive analytical <br />results for the samples. The method blank results associated with the samples will be <br />included with the analytical results. <br />2. Laboratory Control Spike — A Laboratory Control Spike (LCS) is a sample that is spiked <br />with known analyte concentrations, and analyzed at approximately 10 percent of the <br />sample load in order to establish method -specific control limits. The LCS results <br />associated with the samples will be attached on the LCS and LCS Duplicated Analysis <br />Report. <br />3. Matrix Spike Results — A matrix spike is a sample that is spiked with known analyte <br />concentrations and analyzed at approximately 10 percent of the sample load in order to <br />establish method -specific control limits. The matrix spike results associated with the <br />samples will be attached on the Matrix Spike and Matrix Spike Duplicate Analysis Report. <br />4. Accuracv — Accuracy will be measured by percent recovery as defined by: <br />% Recovery = (measured concentration) x 100 <br />(actual concentration) <br />WFORWARD LANDFILL LAND APPLICATION 8 <br />