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VVZ B <br /> INC <br /> i <br /> Exclusion Zone or "Hot" Zone <br /> The Exclusion Zone or "Hot" Zone shall be defined as follows <br /> F <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, excavation, <br /> ' soil sampling, or other invasive activity is to be performed <br /> ' Decontamination Zones <br /> 10 The SSO shall establish a decontamination corridor adjacent to and upwind from identified <br /> exclusion zones The SSO shall set up both equipment and personnel decontamination <br /> ' 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 at <br /> 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 /> APPENDIX I <br /> 12270020 025 10 <br />