Environmental Engineering Reference
In-Depth Information
FIGURE 8.1 Flow chart of movement of samples from field to commercial
laboratory to results returned to requesting agency. COC is the chain
of custody. RFA is the request for analysis.
8.1. SECURITY
There are many different components to maintaining the security of a sample. One is that
the sample container must not be broken or tampered with. This means that it cannot be
opened at any stage between the initial placement in the sample container and the final
opening of the container to take a sample for analysis. If there is a particular concern in
 
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