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7_3 Zone Dimensions <br /> Considerable judgment is needed to ensure safe working distances for each <br /> zone, balanced against practical work considerations. Physical and topographical <br /> barriers may constrain ideal locations. Field /Laboratory measurements <br /> combined with meteorological conditions and air dispersion calculations will assist <br /> in establishing the control zone distances. When not working in areas that <br /> require the use of chemical-resistant clothing, work zone procedures may still <br /> need to limit the movement of personnel and retain adequate site control, <br /> 7.4 Decontamination Procedures <br /> As part of the system to prevent or reduce the physical transfer of contaminants <br /> by people and/or equipment from the site, procedures will be instituted for <br /> decontaminating anything leaving the Exclusion Zone and Contaminating <br /> Reduction Zone. These procedures include the decontamination of personnel, <br /> protective equipment, monitoring equipment, clean-up equipment, etc. Unless <br /> otherwise demonstrated, everything leaving the Exclusion Zone should be <br /> considered contaminated. In general, decontamination at the Site consists of <br /> rinsing equipment with degergent/water solution. Reusable decontaminated PPE <br /> will be stored for air-drying. <br /> Decontamination is addressed in two ways: the physical arrangement and control <br /> of contamination zones, and the effective use of decontamination procedures. <br /> The decontamination process uses cleaning solutions, followed by rinse solutions. <br /> Used solution, brushes, sponges and containers must be properly disposed of. <br /> Decontamination Solution <br /> Description Usage <br /> 3 Cups Alconox <br /> 1 Cup Sodium Carbonate Light contamination <br /> 5-8 Gallons Water <br /> Commercial Detergent Organic contaminants <br /> Full strength or diluted <br /> As with all alkaline cleaners, continuous or repeated contact with the skin should <br /> be avoided. If an employee's skin becomes contaminated, he/she will move to <br /> the decontamination area and remove contaminated clothing, and wash with a <br /> mild soap/detergent and water to remove any contaminant from the skin. <br /> 15 <br /> 3/17/2011 <br />