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cost-efficient operation while still maintaining a high <br /> degree of safety. <br /> Zone 2 - Contamination Reduction Zone: Between the Exclusion <br /> Zone and the Support Zone is the Contamination Reduction <br /> Zone, which provides a transition between contaminated and <br /> clean zones . Zone 2 serves as a buffer to further reduce the <br /> probability of the clean zone becoming contaminated or being <br /> affected by other existing hazards . It ensures that the <br /> physical transfer of contaminating substances on people, on <br /> equipment, or in the air is limited through a combination of <br /> decontamination, distance between Exclusion and Support <br /> Zones, air dilution, zone restrictions, and work functions. <br /> Initially, the Contamination Reduction Zone is considered an <br /> uncontaminated area. At the boundary between the Exclusion <br /> and Contamination Reduction Zones, Contamination Reduction <br /> Corridors (decontamination stations) 'are established, one for <br /> personnel and one for heavy equipment . Depending on the size <br /> of the operation, more than two corridors may be necessary. <br /> Exit from the Exclusion Zone is through a Contamination <br /> Reduction Corridor. As operations proceed, the area around <br /> the decontamination station may become contaminated, but to a <br /> lesser degree than the Exclusion Zone is contaminated. The <br /> amount of contamination should decrease from the Hotline to <br /> the Support Zone because of the distance between the zones <br /> and the decontamination procedures used. <br /> The boundary between the Support Zone and the Contamination <br /> Reduction Zone, the Contamination Control Line, separates an <br /> area that may have low levels of contamination from a clean, <br /> uncontaminated area. Access to the Contamination Reduction <br /> Zone from the Support Zone is through a control point . <br /> Personnel entering this area would wear the prescribed <br /> personal protective equipment, if required, for working in <br /> the Contamination Reduction Zone. Entering the Support Zone <br /> requires removal of any protective equipment worn in the <br /> Contamination Reduction Zone. <br /> Zone 3 - Support Zone: The Support Zone, the outermost part of <br /> the site, is considered an uncontaminated or clean area. <br /> Support equipment (command post, equipment trailer, etc. ) is <br /> located in the zone; traffic is restricted to authorized <br /> response personnel . Since normal work clothes are <br /> appropriate within this zone, potentially contaminated <br /> personnel clothing, equipment, and samples are not permitted, <br /> but are left in the Contamination Reduction Zone until they <br /> are decontaminated. <br /> 10-17 <br />