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The Method of Preservation Preservation methods will be provided, specifying the type of <br /> preservation For non-acidified samples, "ice"will be indicated <br /> The Sampler's Name This will be printed in the "Sampled By" section The sampler's <br /> signature will be written in the "Signed"section <br /> There is potential that samples and analyses could be of an evidentiary nature Therefore, the <br /> possession of samples must be traceable from the time samples are collected in the field until <br /> the analysis is completed and the data are entered as evidence The tracing of the samples <br /> through the laboratory is accomplished by "chain-of-custody" procedures Cham-of-Custody <br /> Forms will be completed for each set of samples The sampler will sign the first "Relinquished <br /> By" line at the bottom of the chain of custody record, and will indicate the date and time of the <br /> custody transfer Samples will not leave custody of the field technician until relinquished to <br /> another party Custody is defined by the following criteria <br /> In the Actual Physical Possession When field personnel have sample in possession, they <br /> have"custody" <br /> In View The samples are in the field personnel's view after being in their physical <br /> possession <br /> Special Areas Sample is kept in a locked area after being in physical possession <br /> Designated Area Sample is in a designated, locked-storage area <br /> Transfer of samples to an analytical laboratory will be done by use of a common carrier or <br /> personal delivery Carver personnel will personally secure samples and,sample containers in <br /> • such a way that no containers can be opened in transit The person to whom the custody is <br /> being transferred will sign on the first "Received By" line of the chain-of-custody record, <br /> indicating that custody is being accepted by the carrier for all the samples listed on the sheet <br /> For subsequent transfers of custody,the succeeding relinquish and receipt lines will be used <br /> Equipment Decontamination <br /> All equipment that comes in contact with potentially contaminated sod or water will be <br /> decontaminated prior to and after each use (for example, after each sampling event) All <br /> purging and sampling equipment will be decontaminated with an Alconox wash and rinsed with <br /> deionized water Decontamination water generated will be added to the purge water <br /> 4 <br />