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Decontamination will be performed in the contamination reduction <br /> zone which shall be contiguous to the exclusion zone . The <br /> decontamination zone will be established at the perimeter of the <br /> regulated area. Personnel entering or leaving the exclusion zone <br /> will pass through this area in order to prevent any cross <br /> ' contamination and for the purpose of accountability. Tools and <br /> any equipment or machinery will be decontaminated in a specified <br /> location. Personnel decontamination includes removal of <br /> protective outer garments and respiratory protection will be <br /> performed in the contamination zone. <br /> ' The support zone will consist of all areas of the work area <br /> beyond the contamination reduction and exclusion zones . The <br /> support zone will be defined, to the extent feasibility, to <br /> prevent employees and the public from being exposed to any <br /> organic vapors or dust above environmental levels . <br /> Access <br /> ' Access to contaminated work areas (Work and Contamination <br /> Reduction Zones) shall be regulated and limited to authorized <br /> persons . Visitors to the site shall abide by the following: <br /> ' All visitors shall be instructed to stay outside the <br /> work zone and remain within the clean zone during the <br /> extent of their stay. Visitors shall be cautioned to <br /> avoid skin contact with contaminated or suspected <br /> ' contaminated surfaces . During visitation, hand-to- <br /> mouth transfers should be reduced with special <br /> precautions not to eat, drink, smoke, or chew gum or <br /> ' tobacco. The use of alcohol or medicine in the <br /> container zones is prohibited. <br /> ' Visitors requesting to observe work conducted in the <br /> exclusion zone must wear all appropriate personnel <br /> protective devices before entering the contaminated <br /> zone. Visitors will be required to sign in and out of <br /> ' the job site . If respiratory protective devices are <br /> necessary, visitors who wish to enter the contaminated <br /> zone must produce evidence that they have had a <br /> ' complete physical examination and respiratory <br /> protection training, including respiratory fitting, <br /> within the past 12 months . Visitor must provide their <br /> ' own respiratory protection. The wearer must pass a <br /> qualitative fit test before entry will be permitted. <br /> A-20 <br /> MA:ENG:9262-AppA/041291 <br />