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• Page 15 <br /> 4.6 QA/QC Samples <br /> Appropriate QA/QC samples will be prepared in the field and laboratory. Field QA/QC samples <br /> will include field duplicate, equipment rinseate, and field blanks. Laboratory QA/QC samples <br /> include laboratory control sample, preparatory blank, matrix spike, and either a matrix spike <br /> duplicate or a sample duplicate. Definitions for the QA/QC samples are presented in Section 2.1. <br /> Table 1 summarizes the field QC samples and collection frequencies recommended for <br /> procedures outlined in this SAP. Table 2 presents a description of the field QC samples and <br /> typical collection frequencies and Table 3 provides a summary of the laboratory QC checks and <br /> limits. <br /> 4.7 Sample Handling and Shipping <br /> Samples from each sampling event will be collected and sent to the laboratory along with <br /> QA/QC samples for analysis. <br /> • Chain-of-custody forms will be properly filled out for all samples. Shipping will be consistent <br /> with current DOT and other applicable regulations. A detailed description of sample handling <br /> and shipping procedures is presented in Appendix A. <br /> Each sample will be affixed with a label identifying the sample number, date and time the sample <br /> was collected, the sampler's initials, and the site name. Duplicate and split samples will not be <br /> identified as such. <br /> 4.8 Sample Custody <br /> An established program of sample chain-of-custody procedures, as summarized in Appendix D, <br /> will be followed during field sample collection and handling activities to account for each natural <br /> sample and QA/QC sample. Preprinted labels with spaces provided will be used to maintain the <br /> highest degree of control in sample handling and will ensure that all necessary information is <br /> retained with the sample chain-of-custody records. <br /> 4.9 Laboratory Analytical and Calibration Procedures <br /> Samples will be analyzed in a laboratory in compliance with EPA's CLP standards. The <br /> • laboratory will also perform calibration procedures for equipment utilized during analysis. <br /> CO2081 <br /> PRIVILEGED AND CONFIDENTIAL <br /> _=-=Environmental <br /> C:wRoJECrswioz-ooivtii7eioz.00i(erzavel -Now � � �� M M <br />