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T <br /> Sampling and Analysis Chain-of-Custody Record (see Figure A-3) that will accompany <br /> the sample to the laboratory. <br /> The sampling team transfers the samples from the site to Columbia Analytical Services <br /> (CAS) laboratory. Within 24 hours after samples are received, samples are routinely <br /> shipped from EMCON Associates to CAS. <br /> 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 storage. Sample <br /> documentation will include the use of the following: <br /> • Field logbook 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 <br /> samples <br /> • Laboratory analysis request sheets for documenting analyses to be performed <br /> Field Logbook <br /> In the field, the sampler will record the following information on the Water Sample Field <br /> Data Sheet (see Figure A-2) for each sample collected: <br /> • Project number <br /> • Client's name <br /> • Location <br /> • Name of sampler <br /> • Date and time <br /> • Well accessibility and integrity <br /> • Pertinent well data (e.g., casing diameter, depth to water, well depth) <br /> • Calculated and actual purge volumes <br /> SAC/pj(M93M9390011.8a1-94/lfc:9 Rev.0, 10/17/94 <br /> 0939-001.18 A-5 <br />