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4.5 SAMPLE DOCUMENTATION <br /> Record keeping activities include: (1) documentation of sampling activities in a field <br /> memorandum; and (2) labeling of samples for identification. In the field, the Dames & Moore <br /> site representative will record the following information (as appropriate) for each sample <br /> collected: <br /> • Project number; <br /> • Site name; <br /> • Date; <br /> • Name of sampler; <br /> Boring number and location; <br /> • Boring depth and water surface elevation; <br /> • Sampling method; <br /> • Preservatives used; <br /> • Container types and volumes; <br /> • Appearance of each sample; and <br /> • Sample storage. <br /> 1 <br /> When collecting soil samples, field personnel will use the standard Dames & Moore <br /> boring log form. Included in this form are columns for indicating lithologies, sample depths,and <br /> sampler type. Field memorandums will contain information on any special circumstances <br /> encountered during sampling. <br /> When each sample is received at the laboratory, the seal will be checked. Any evidence <br /> of tampering with the samples will be noted on the accompanying forms. <br /> 4.6 CHAIN OF CUSTODY RECORD <br /> In order to maintain the integrity of the samples, strict chain of custody procedures will <br /> be implemented. The chain of custody record(s), initiated at the time of sampling, will contain <br /> the probe number, date and time of sampling, and the name of the person who collected the <br /> sample. When the samples are transferred to the laboratory, the chain of custody record will <br /> accompany the shipment. <br /> SAC 187.14 <br /> DA.&i ES & MOORE <br />