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• <br /> Labels <br /> Sample labels contained the following information: <br /> • Project number • Sampler's initials <br /> • Sample number (i.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 <br /> minimum, the sample designation-(including the depth at which the sample was collected), <br /> sample type, analytical request, date of sampling, and the name of the sampler. The record <br /> sheet was signed, timed, and dated by the sampler when transferring the samples. The <br /> number of custodians in the chain of possession was minimized. A copy of the ARCO <br /> chain-of-custody record was returned to IT with the analytical results. <br /> Groundwater Sampling and Analysis Request Form <br /> A groundwater sampling and analysis request form (see Figure A-3) was used to <br /> communicate to the environmental sampler the requirements of the monitoring event. At a <br /> minimum, the groundwater sampling and analysis request form included the following <br /> information: <br /> • Date scheduled C Well number <br /> Site-specific instructions • Well specifications (expected total depth, <br /> depth of water, and product thickness) <br /> • Specific,analytical parameters <br /> CP:1C:\Common\QMR\ARCo14thQ99M86Q499.DOG98Usg:1 rr Corporation <br /> A-6 02/07/00 <br />