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7.2.1 Exclusion Zone The Exclusion Zone is the innermost area of the three concentric rings and is considered contaminated, dirty, or "hot'. Within this area, the prescribed protection must be worn by any personnel upon entering An entry checkpoint will be established at the periphery of the exclusion zone to control the flow of personnel an equipment between contiguous zones, and to guarantee that the procedures established to enter and exit the zones are followed The Exclusion Zone boundary will be established initially on the presence of the contaminant(s) within the area Subsequent to initial operations, the boundary may be readjusted based on observations and or measurement. The boundary will be physically secured and posted 7.2.2 Contamination Reduction Zone Between the exclusion and the support zone is the contamination reduction zone. The purpose of this zone is to provide an area to prevent or reduce the transfer of contaminants which may have been picked up by personnel or equipment returning from the exclusion zone. All decontamination activities occur in this area The boundary between the support zone and the contamination reduction zone is the contamination control line. This boundary separates into the contamination reduction zone from the clean area will be through an access control point. Personnel entering at this station will be wearing the prescribed PPE for working in the contamination reduction zone. Exiting the contamination reduction zone to the clean area requires the removal of any suspected or known contaminated PPE, and compliance with the established decontamination procedures. 7.2.3 Support Zone The Support Zone is the outermost of the three rings an is considered decontaminated or clean area It contains the Command Post (CP) for field operations and other elements necessary to support site activities. Normal street or Level D work clothes are the appropriate apparel to be worn in this area