Z

Zone, Contamination Reduction (Warm Zone)
The area between the Exclusion Zone and the Support Zone.  This zone contains the personnel decontamination station.  This zone may require a lesser degree of personnel protection than the Exclu­sion Zone.  This separates the contaminated area from the clean area and acts as a buffer to reduce contamination of the "clean" area.  (U.S. Coast Guard Incident Management Handbook, 2001 edition)

Zone, Exclusion (Hot Zone)
The area immediately around a spill or release and where contamination does or could occur.  The inner­most of the three zones of a hazardous substances/material incident.  Special protection is required for all personnel while in this zone.  (U.S. Coast Guard Incident Management Handbook, 2001 edition)

Zone, Support (Cold Zone)
The "clean" area outside of the contamination control line.  In this area, equipment and personnel are not expected to become contaminated.  Special protective clothing is not required.  This is the area where resources are assembled to support the hazardous substances/materials release operations.  (U.S. Coast Guard Incident Management Handbook, 2001 edition)