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. Labels <br /> Sample labels contained the following information <br /> • Project number • Sampler's uutials <br /> • Sample number(n e , well designation) • Date and time of collection <br /> • Sample depth • Type of preservation used (if any) <br /> Sampling and Analysis Chain-of-Custody Record <br /> The ARCO chain-of-custody record initiated at the time of sampling contained, at a rrummum, the <br /> sample designation (including the depth at which the sample was collected), sample type, <br /> analytical request, date of sampling, and the name of the sampler The record sheet was signed, <br /> timed, and dated by the sampler when transferring the samples The number of custodians In the <br /> chain of possession was nun=zed A copy of the ARCO chain-of custody record was returned <br /> to EMCON with the analytical results <br /> Groundwater Sampling and Analysis Request Form <br /> A groundwater sampling and analysis request form (see Figure B-3) was used to communicate to <br /> the environmental sampler the requirements of the monitoring event At a nunimum, the <br /> groundwater sampling and analysis request form included the following information <br /> • Date scheduled • Well number <br /> • Site-specific instructions • Well specifications (expel ted total depth, <br /> depth of water, and product thickness) <br /> • Specific analytical parameters <br /> SACH VJ"80M8051460 7CS-96,cjb 1 B-7 Rev 0, 10!15/96 <br />