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PPE Failure <br /> If any worker experiences a failure or alteration of their PPE that <br /> compromises their health and safety, that person (accompanied by <br /> another worker if necessary) must immediately leave the exclusion <br /> zone. Reentry will not be permitted until the equipment has been <br /> repaired or replaced and the worker is fit enough to resume work. <br /> WORK ZONES <br /> Exclusion Zone <br /> This is the area where contamination does or could occur. PPE must <br /> be worn in this area. The perimeter of this zone will be marked with <br /> barricades and CAUTION tape (waist level) and have access only <br /> through the decontamination zone. <br /> Exclusion Zone Activities <br /> Exclusion zone activities will consist of an underground storage <br /> tank removal, including disconnecting and flushing of UST fuel lines, <br /> soil excavation, inerting of the tank, tank and soil removal and soil <br /> sampling. <br /> Decontamination Zone <br /> This is a transition zone between the exclusion zone and the support <br /> zone. Sampling equipment and tools are cleaned or disposed of in <br /> this zone. PPE is sequentially removed and contained or cleaned as <br /> workers move from the exclusion zone to the support zone. <br /> Equipment Decontamination Procedures <br /> If diesel fuel contamination is present in fill or native soil, some <br /> equipment and PPE may become contaminated. A thorough <br /> decontamination is essential to prevent the transfer of chemical <br /> contaminants to workers, vehicles, uncontaminated on-site areas <br /> and off-site areas. Decontamination procedures are as follows: <br /> 1 . Remove as much excess soil as possible in the exclusion zone. <br /> 2. Using brushes, scrub the equipment in dish washing detergent <br /> solution, being careful to contain all cleaning water. <br /> D-12 <br />