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4.7.1 Delineated Zones <br /> The work area will include three separate zones: an exclusion <br /> work zone, a contamination reduction zone, and a clean or support <br /> zone. <br /> The exclusion zone or work zone will include areas of suspected <br /> contamination. All employees will use proper personnel <br /> protective equipment when working in contaminated areas. The <br /> location of the exclusion zone will be demarked by barricades and <br /> yellow warning tape or other equivalent means. <br /> 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 <br /> contamination and for the purpose of accountability. Tools and <br /> any equipment or machinery will to decontaminated is 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 /> 4.7.2 Access <br /> Access to contaminated work areas (Workand contamination <br /> orized <br /> Reduction Zones) shall be regulated and limited to the following: <br /> persons. Visitors to the site shall abide by <br /> 4--18 <br /> __ IBM, i <br />