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VZ1 INC <br /> MExclusion Zone or "Hot" Zone <br /> The Exclusion Zone or "Hot" Zone shall be defined as follows <br /> 1 Wherever portable direct-reading air monitoring instruments register <br /> anything above the background readings established upwind off-site in <br /> uncontaminated areas <br /> 2 If portable direct-reading air monitoring instruments read background <br /> throughout the site, the exclusion zone shall be defined around the area(s) <br /> of known or suspected chemical contamination, or where drilling, <br /> excavation, soil sampling, or other invasive activity is to be performed <br /> Decontamination Zones <br /> iThe SSO shall establish a decontamination corridor adjacent to and upwind from <br /> identified exclusion zones The SSO shall set up both equipment and personnel <br /> decontamination areas outlined under "Decontamination Procedures" below <br /> Support Zone <br /> The SSO shall establish support zones upwind from the decontamination corridor where <br /> all portable direct-reading air monitoring instruments read background, at a distance of <br /> at least 20 meters from the exclusion zone <br /> The support zone shall be established such that support personnel may observe all <br /> personnel in the exclusion zone at all times <br /> • <br /> Appendix IV <br /> Page 10 <br />