The support (cold) zone is the outermost part of the site, and is considered a non-contaminated or clean area. Support equipment (command post, equipment trailer, etc.) is located in this zone and traffic is restricted to authorized response personnel.
Since normal work clothes are appropriate within this zone, potentially contaminated personnel clothing, equipment, and samples are not permitted, but are left in the warm zone until they are decontaminated.
The command post is always located in the support (cold) zone and should serve as the communication center for all on site and off site activities relative to the operation. The location of the command post and other support facilities in the cold zone depends on a number of factors, including:
Accessibility
Wind direction
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