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LLNL Emergency Plan Rev-23 October 2017 1.4.1.1 Facility Descriptions Site 200 Site 200 has six facilities or grouping of facilities as determined by EPHAs that could experience events causing the declaration of an Operational Emergency based on the nature of the hazardous materials present. Site 300 Site 300 conducts tests associated with the non-nuclear explosive component of a nuclear weapon. Some facilities at Site 300 store hazardous materials of sufficient quantity that could cause declaration of an Operational Emergency if an incident occurred. However, while there are various locations where hazardous material accidents could occur, the entire site is treated as a single hazardous facility during the hazards assessment process. 1.4.1.2 All-Hazards Survey and Hazardous Material Assessment The actual and authorized hazardous material inventories of the Livermore Site 200 and Site 300 facilities are compared with the evaluation criteria screening thresholds from DOE Guide 151.1-2, Technical Planning Basis, to determine the need for further quantitative assessment. Facilities with an inventory of a particular hazardous material in excess of criteria- based values require further evaluation and documentation in the form of a facility-specific EPHA. The EPHAs are updated periodically(every three years) or whenever there are significant changes to operations (e.g., new operations not previously considered or new hazardous material inventories). The processes used to screen hazardous materials are described in detail in a hazards survey. The LLNL All-Hazards Survey is developed in accordance with local plans/procedures for preparing the hazards survey. Most of the facilities listed in the All-Hazards Survey do not require a facility-specific quantitative EPHA. Hazards existing at LLNL include small amounts of chemical hazards such as hydrogen chloride, chlorine, and sodium hydroxide. Radiological hazards include plutonium, uranium, tritium and transuranic wastes. The results of this evaluation survey are summarized in Table HS-1 of the current version of the All-Hazards Survey. The latest Emergency Readiness Assurance Plan contains annually updated information on the All-Hazards Survey, EPHAs, and tabulated information related to significant radiological, chemical, and biological hazards authorized in LLNL buildings and facilities. Based on hazardous material inventory information, facilities are categorized in the Emergency Management Hazardous Materials Program and require facility-specific quantitative assessments with associated documentation (the EPHA). To ensure that hazardous materials posing plume- release impacts are adequately considered, those hazardous materials inventories potentially producing Alert, Site Area Emergency, or General Emergency classifications during an Operational Emergency will be evaluated generically in the North American Emergency Response Guidebook(current version) for transportation incidents and/or in a facility EPHA as 15