OnSite Environmental Inc. understands that scientifically sound and legally defensible analytical data is critical to our clients" projects. To ensure that our clients" data quality objectives are met, OnSite Environmental Inc. has implemented a quality assurance program that focuses on the following quality control procedures. Maintain appropriate chain of custody of samples submitted to the laboratory. Maintain an effective, on-going quality control program to measure and verify laboratory performance. Monitor daily operational performance of the laboratory and provide timely corrective action. Track corrective actions for resolution and appropriateness. Meet data requirements for accuracy, precision and completeness. Maintain traceability of measurements. Maintain complete records of data and reports generated by the laboratory. Provide sufficient flexibility to allow controlled changes in routine methods and Standard Operating Procedures to meet specific client data quality objectives. Maintain a data review process.