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Use security seals where appropriate. Although security seals do not provide physical security, <br /> the seals are evidence that the samples were not tampered with while unattended. <br /> Use best professional judgment when providing physical security of the samples or sampling <br /> process. The sampling technician should be qualified and knowledgeable of the programmatic <br /> requirements for the samples and provide the appropriate degree of physical security. <br /> B.4. Standard Practice for Sample Submittal to Contract Analytical <br /> Laboratories <br /> B.4.1. Scope <br /> This standard practice describes the process for submitting samples to approved contracted <br /> analytical laboratories. <br /> This practice complements procedures for the collection, preservation, and shipment of <br /> samples as documented elsewhere. <br /> B.4.2. Coordination with Laboratory <br /> NS sends groundwater samples to ACZ Laboratories. The schedule is determined by <br /> governmental regulatory agencies. Typically the Chain of Custody (COC) document will suffice <br /> for most sample submissions and communications. Special circumstances may require <br /> additional communication with the laboratory. The following information will typically be <br /> needed: <br /> • Number and types of samples <br /> • Analytes requested or testing protocol to be followed <br /> • Special requirements, regulatory methods, and detection limits <br /> • Turnaround time requirements <br /> • Reporting requirements <br /> B.4.3. Sample Collection and Documentation <br /> Samples are collected, preserved, and packaged in accordance with the appropriate <br /> procedures; refer to Section B.6, "General Considerations for the Sampling of Liquids," and <br /> related procedures. <br /> Field activities and all comments or deviations from procedures are documented on the Field <br /> Data Sheet or Trip Report/Log in accord with Standard Practice for Field Documentation <br /> Processes (see Section B.1, "Standard Practice for Field Documentation Processes"). <br /> Samples are sealed and labeled for shipment; refer to Standard Practice for Sample Labeling <br /> (see Section B.2, "Standard Practice for Sample Labeling"). Sample integrity must be <br /> maintained (samples must be under constant supervision and protected from tampering) and <br /> documented on a Chain of Custody Form. Refer to Section B.3, "Standard Practice for Chain of <br /> Daub&Associates, Inc. Page B-9 Natural Soda LLC 2022 SAP <br />