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' 1 INC <br /> Exclusion 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 anything above <br /> the background readings established upwind off-site in uncontaminated areas <br /> ' 2 If portable direct-reading air monitoring Instruments read background throughout the <br /> site, the exclusion zone shall be defined around the area(s) of known or suspected <br /> chemical contamination, or where drilling, excavation, soil sampling, or other Invasive <br /> activity is to be performed <br /> Decontamination Zones <br /> 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 areas <br /> outlined under "Decontamination Procedures" below <br /> Support Zone <br /> The SSO shall establish support zones upwind from the decontamination corridor where all <br /> portable direct-reading air monitoring Instruments read background, at a distance of at least 20 <br /> ' meters from the exclusion zone <br /> ' The support zone shall be established such that support personnel may observe all personnel <br /> in the exclusion zone at all times <br /> 1 <br /> APPENDIX <br /> i 10 <br /> ' 08220010 005 <br />