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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. <br />Page B-9 Natural Soda LLC 2015 S A P <br />