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(CAS') laboratory. Within 24 hours after samples are received, samples are routinely <br /> shipped from EMCON Associates to CAS. The CAS laboratory manager will check the <br /> holding times for requested analyses so that they are not exceeded. <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 identity 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 /> purging equipment used <br /> sampling equipment used <br /> SACJ jM39I09390040.6e1-93 lfc:3 A-6 Rev.0 November 12.1993 <br />