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B.3.5. Chain of Custody Procedure <br />The sampling technician shall complete the chain of custody record during or after sample <br />collection. <br />• Use permanent ink or electronic entry to complete the form. <br />• The initiator of the form is responsible for legibility of all entries other than signatures. <br />• When the samples are physically transferred from one person to another, the relinquisher <br />and receiver shall sign the appropriate block, with the date and time of sample transfer. <br />The relinquishers, by signing, verify that the samples have been within their custody. <br />• It is each signatory's responsibility to sign legibly. <br />• The relinquisher retains a copy of the form. <br />• Non -contractor employees are not required to sign the form (e.g., employees of shipping <br />companies). <br />• The following is the minimum information required on the form to ensure sample <br />identification: <br />• Sample ID (well name) <br />• Date and time of sample collection <br />• Number and types of sample bottles <br />• All sample containers will use custody seals (Figure 5) or tags to seal the individual sample <br />containers or the inner or outer shipping carton. <br />• When seals are applied to the sample container, they must not obscure the information on <br />the sample label. <br />• Securely wrap or fasten shipping containers prior to application of the custody seals. <br />• Enter the date the samples are sealed and sign the custody seals or tags as shown below. <br />Clear plastic tape shall be applied over the seals for protection. <br />AC 2 Laboratories, Inc. <br />CUSTODY SEAL <br />No. <br />Signature <br />Date <br />Figure 5. Example of Custody Seal. <br />• An original chain of custody record shall accompany the samples until they are received by <br />the laboratory. <br />• Unless otherwise specified by the project, the chain of custody record shall be maintained <br />as part of the project records. <br />B.3.6. Physical Security of Samples <br />The sampling technician must maintain physical security of the samples, sampling process, and <br />equipment by physical possession or visual contact. <br />Daub & Associates, Inc. <br />Page B-8 Natural Soda LLC 2015 S A P <br />