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APPENDIX C <br /> QUALITY ASS URANCEIQ UALITY CONTROL <br /> The purpose of this appendix is to provide an internal means for <br /> controlling and reviewing data collection and management. The <br /> fundamental mechanisms for achieving these quality objectives fall into <br /> the categories of prevention, assessment, and correction: <br /> • Quality control throughout sampling, analysis, data assessment <br /> (review), qualification and feedback; <br /> • Quality assessment through periodic field audits and continual <br /> informal review; and <br /> • Permanent correction of conditions that adversely affect quality <br /> through a closed-loop corrective action system. <br /> This appendix addresses analytical testing procedures, laboratory quality <br /> control procedures, laboratory equipment calibration, auditing criteria, <br /> and corrective action measures. <br /> Analytical Procedures <br /> Analyses will be performed by a California-certified laboratory. <br /> Analytical procedures will follow standard EPA methodologies. <br /> Laboratory Quality Control Procedures <br /> Quality assurance staff at the laboratory will have a program that <br /> monitors laboratory quality through the analysis of quality assurance <br /> (QA) and quality control (QC) samples. These samples will monitor the <br /> sample preparation, analysis, sample container preparation, sample <br /> storage, and the cleanliness of glassware preparation. <br /> The lab will maintain a written QA/QC Standard Operating Procedure <br /> (SOP) documents that will be available to laboratory personnel <br /> C-1 <br />