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chain-of-custody entries will be made on the Chain-of-Custody/Laboratory Analysis <br /> Request form to document sample custody. Information on the container labels will be <br /> compared to the information on the chain-of-custody form and on the field sampling data <br /> forms, and the field logbook. <br /> 3.3.4 Chain-of-Custody <br /> Once a sample is collected, it will remain in the custody of the sampler or other authorized <br /> personnel, until it is shipped to the laboratory. Upon transfer of sample possession to <br /> subsequent custodians, the persons transferring custody will sign the chain-of-custody form. <br /> During interstate transport, the chain-of-custody form will be placed in a resealable plastic <br /> bag and accompany each sample cooler to the laboratory. Signed and dated chain-of- <br /> custody seals will be placed on coolers prior to shipping. When the samples are received at <br /> the laboratory, the custody seal on the shipping container will be broken and the condition <br /> of the samples recorded by the laboratory custodian. Chain-of-custody records will be <br /> included in the analytical report prepared by each laboratory. Copies of the <br /> chain-of-custody records will be retained in the project file. <br /> Upon receipt of the samples, the laboratory will complete the chain-of-custody record. <br /> The condition of each sample container will be noted. The laboratory will also maintain a <br /> sample-tracking record that will follow each sample through the laboratory process. The <br /> sample-tracking record must show the dates of sample extraction or preparation, and <br /> sample analysis for each sample. These records will be used to determine compliance <br /> with specified holding times. <br /> 3.3.5 Sample Packaging and Shipping <br /> Samples will be shipped to the analytical laboratory and the end of each day following <br /> sample collection. At no time shall samples be held for more than two days following <br /> sample collection. Packaging and shipment will follow these procedures: <br /> • Sample containers will be transported in resealable plastic bags on ice in a sealed, <br /> insulated cooler. <br /> • Glass bottles will be separated in the shipping container by shock-absorbent <br /> packaging material to prevent breakage. <br /> • Ice will be placed on top of the samples. <br /> • Sample shipments will be accompanied by a chain-of-custody/laboratory analysis <br /> request form,which will be sealed in a plastic bag and placed inside each cooler. <br /> Sampling and Analysis Plan-Final 5/18/2012 <br /> 3-6 <br />