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DGM Environmental Monitoring QAPP <br /> 6.1.2 Sample Field Documentation <br /> 6.1.2.1 Sample Collection Documentation <br /> A field notebook or equivalent record documenting all sampling and sample collection <br /> activities, preservation and special handling, collection dates/times, sample field <br /> custody, and technician observations of environmental conditions and any other <br /> potentially pertinent information will be maintained as part of the project or task archive. <br /> 6.1.2.2 Chain of Custody Records <br /> Chain of Custody (COC) forms are used for identification, documentation and tracking <br /> of all samples. Figure 7-1 provides an example of a COC form. Sample COC <br /> documentation is necessary for tracking and quality assurance of data. Sample <br /> identification is assigned in the field during the sampling process. Official sample COC <br /> documentation starts in the field through assignment of a unique sample identification <br /> and allows tracking of each sample from acquisition through the reporting of results. <br /> The sampling technician initiates the sample's COC documentation by initiating a COC <br /> form. The sampler, field custodian, and/or sample deliverer each enter required <br /> information on the COC form. The sampling technician may also record pertinent field <br /> data and comments on the form as well as in a field notebook or other type of record. <br /> Page 8 <br />