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0 0 <br /> B. GROUNDWATER SAMPLE PRESERVATION AND HANDLING <br /> The following section specifies sample containers, preservation methods, and sample <br /> handling procedures. <br /> 1. Sample Containers and Preservation <br /> Sample containers vary with each type of analytical parameter. Container types and <br /> materials were selected to be nonreactive with the particular analytical parameter tested. <br /> Required analytes, appropriate bottle types, and sample volumes are provided in Table 1. <br /> 2. Sample Handling <br /> Sample containers will be labeled immediately prior to sample collection. Samples will <br /> be kept cool at all times with cold packs until received by the laboratory. At the time of <br /> sampling, each sample will be logged on a chain-of-custody record that will accompany <br /> the sample to the laboratory. <br /> Samples that require overnight storage prior to shipping to the laboratory will be <br /> continuously kept cool (4°C). If samples are not immediately delivered to the laboratory, <br /> samples will be stored in a secure location to preserve the chain of custody. <br /> Samples will be transferred to a California-certified laboratory by courier or taken <br /> directly to the laboratory by the sampler. Samples will be delivered to laboratories <br /> performing the selected analyses within 24 hours of sample collection. <br /> C. GROUNDWATER SAMPLE DOCUMENTATION <br /> The following procedures will be used during sampling and analysis to provide <br /> chain-of-custody control during sample handling from collection through delivery. <br /> Sample documentation will include the following: <br /> • Field data sheets to document sampling activities in the field. <br /> • Labels to identify individual samples. <br /> • Chain-of-custody record sheets for documenting possession and transfer of samples. <br /> • Laboratory analysis request sheets for documenting analyses to be performed. <br /> Each of the documents listed above is described in the following text. <br /> 1. Field Data Collection <br /> In the field, the sampler will record the following information on a field data sheet for <br /> Project Workplan A-3 SA1433 <br /> July 30,2004 n:\sa01433\gwmwiwp\workplan.doc <br />