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LLNL Emergency Management Plan(EPlan) Rev 26 January 2021 8.3 Reentry Where structural damage is apparent, reentry activities may fall into two general categories. The first type generally involves activities necessary to account for personnel and/or rescue activities and can only be carried out by Fire Department personnel. The second involves reentry into the affected area for the purpose of assessing the situation and planning recovery operations. This function also belongs to the Fire Department, assisted by I&OD, ES&H Teams, and facility/building/program subject matter experts. This section addresses the determination of appropriate actions for the rescue and recovery of persons and the protection of health and property during emergency response. Reentry activities related to recovery planning and event termination are described in Section 11 of this Plan and in EPO plans/procedures. • CFR 835.1302 contains requirements to be met when conducting these operations in response to a radiological hazard. The regulation provides dose guidelines for the control of exposure during specific types of activity. Although the regulation is designed for response to radioactive releases, the basic principles apply to most chemical hazardous material responses. The regulation begins with three basic principles: "1) The risk of injury to those individuals involved in rescue and recovery operations shall be minimized; 2) Operating management shall weigh actual and potential risks to rescue and recovery individuals against the benefits to be gained; and 3) Rescue action that might involve substantial risk shall be performed by volunteers." Reentry by First Responders to specific buildings or areas during an emergency must be approved by the on-scene IC (either the Fire Department Battalion Chief or PFD Security IC for security events), with the assessment that the facility be reentered safely. 8.4 Emergency Planning Zones The EPZ for hazardous material accidents are described and analyzed in the individual facility EPHAs. In general, an EPZ is an area within which the results of an EPHA indicate the need for specific planning to protect people from the consequences of hazardous material releases. For Site 200, it was determined that a one-mile composite EPZ was appropriate based upon a summary of the EPZs for individual facilities. The EPZ for Site 300 is the site boundary itself. No offsite area can be affected by emergencies at Site 300. The primary exposure pathway from hazards at both sites is inhalation, although ingestion and absorption potential is also considered in EPHAs. The development and identification of this composite EPZ may be found in the Composite Emergency Planning Zone. Figure 8.1 depicts the EPZ developed for Site 200 and shows onsite and offsite areas that could be affected by emergencies at Site 200. Protection of offsite residents in the EPZ is the responsibility of the IC; however, it is the duty of the ED to issue protective action recommendations to the IC, as well as to offsite authorities. Based on agreements with offsite agencies, offsite evacuation and sheltering plans to be used in an emergency are not pre-defined, but will be determined by the IC during the emergency. The IC may evacuate residents beyond the EPZ to simplify the logistics of moving residents. 85