Laboratory Custody Procedures. Laboratory custody procedures for sample receiving and login; sample storage and numbering; tracking during sample preparation and analysis; and storage of data are described in the various laboratory QAMs (Appendix A). Sample Receipt and Storage Personnel at the laboratory are responsible for receiving samples, completing chain-of-custody records, determining and documenting the condition of the samples upon receipt, recording the samples in the LIMS and storing the samples appropriately. Chain-of-custody documentation is also maintained for intra- and inter-laboratory transfer and shipment of samples for analysis of the necessary parameters. Upon receipt, the samples will be compared with the chain-of-custody record. All discrepancies, including broken containers, inappropriate container materials or preservatives, headspace in volatile organic compound (VOC) water samples, and incorrect or unclear sample identification, will be documented and communicated to the appropriate IBS Project Coordinator(s) and the Consultant PM. Each sample is given a unique laboratory code and an analytical request form is generated, and the pertinent information for each sample is listed in the laboratory QAM. Samples will be stored in secured areas. Refrigerators or walk-in coolers will be maintained at 4° (± 2°) C or as required by the applicable analytical method/regulatory program. Temperatures of all refrigerated storage areas will be monitored and recorded at least once daily, and deviations from the appropriate range require corrective action, which may include moving samples to another location if necessary.
