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laboratories performing the selected analyses routinely occur within 24 hours of <br /> sample receipt The laboratory manager will check the holding times for requested <br /> 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 <br /> Sample 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 <br /> ' transfer of samples <br /> laboratory analysis request sheets for documenting analyses to be <br /> performed <br /> Field Logbook <br /> In the field, the sampler will record the following information on a Water Sample <br /> Field Data Sheet 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 /> ' C -6 <br />