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A4OM 1. Use the packaging provided by the lab for shipment. 2. Check all sample containers to ensure that they are properly labeled and properly sealed. 3. Complete the chain-of-custody form for the sample. 4. Disconnect all fittings attached as part of the sampling event and place in supplied boxesor wrap in bubble wrap as necessary. 5. Place each canister upright in the packaging so that no container is touching anotherand replace all foam and packaging materials supplied by the laboratory as applicable. Ship cannisters at ambient temperature with leak-free valve closed and cap tightened. 6. Retain one copy of the completed and signed chain-of-custody form for the samples inside the cooler. Place the remaining copies of the completed and signed chain-of- custody form inside a zip lock bag and place inside the packaging. 7. Secure the package by taping with clear tape in at least three locations, two of which areat right angles to each other. 8. Attach the completed shipping label to the top of the package. 9. Place "This Side Up" labels on all four sides of the packaging. Place "Fragile" labels on at least two sides of the packaging. The labels will not be overlapped or taped over. 10. Affix signed custody seals over the packaging lid closure on the top and bottom. 11. Record all shipment tracking numbers in the field book. The shippers' weight limits must not be exceeded. If the package is so heavy that the weight limits are exceeded, the samples must be repackaged into two or more packages. 5.3 Chain-of-Custody Procedures Chain-of-custody procedures are established to ensure sample integrity by documenting positive custody of sample containers and collected samples. The possession of samples must be traceable from the time that sample containers are provided by the analytical laboratory until the collected samples are received and analyzed by the analytical laboratory. A sample is in custody if: • in possession or view of authorized personnel • secured by authorized personnel to prevent tampering and/or • placed in a designated secure area Chain-of-custody procedures include the procedures for documenting the identity of samples at the time they are collected in the field, documenting physical possession of sample