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t <br /> Labels � <br /> ' Sample labels will contain the following information <br /> ' project number <br /> • sample number(i e , well designation) <br /> • <br /> sampler's initials <br /> tdate and time of collection <br /> type of preservative used (if any) <br /> ' <br /> Sampling and Analysis Chain-of-Custody Record <br /> The Sampling and Analysis Cham-of-Custody Record (see Figure 5), initiated at <br /> the time of sampling, contains, but is not limited to, the well or sample location, <br /> ' sample type, analytical request, date and time of sampling, and the name of the <br /> sampler The record sheet will be signed, timed, and dated by the sampler when <br /> transferring the samples Custody transfers will be recorded for each individual <br /> sample, for example, if samples are split and sent to more than one laboratory, a <br /> chain-of-custody record sheet will accompany each sample The number of <br /> custodians in the chain of possession will be minimized A copy of the Sampling <br /> and Analysis Chain-of-Custody Record will be returned to Western Oil & <br /> Spreading Inc 's project manager D K Barber P E and Associates with the <br /> analytical results <br /> ' Groundwater and Analysis Request Form <br /> ' A Groundwater Sampling and Analysis Request Form or combined sampling and <br /> analysis Chain of Custody Record (see Figure 5) or purchase order, or both, will <br /> accompany the samples delivered to each laboratory These forms serve as <br /> ' official communication to the laboratory of the particular analysis/analyses required <br /> for each sample <br /> ' At a minimum, the Groundwater Sampling and Analysis Request Form includes <br /> the following information <br /> ' date submitted <br /> C-10 <br />