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LLNL Emergency Management Plan Rev 24 January 2019 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 prescribed by DOE Order 151.1D 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 required by the plan/procedure on EPHAs. Of the approximately 746 facilities at LLNL, there are just six facilities or grouping of facilities at Site 200 that, by the nature of the hazardous materials present, could experience events causing an Operational Emergency to be declared as described in detail in their respective EPHA documents. Additionally, there is one EPHA at Site 300. There are offsite (non-DOE) facilities identified in the EPHAs that might negatively impact Site 200 by the release of hazardous chemicals such as chlorine gas and ammonia gas. There are no such facilities identified in the Site 300 vicinity. The Sandia National Laboratories/California site (located directly south of Site 200) is covered by its own emergency management program. Commercial and other vehicles unrelated to LLNL operations can transport hazardous materials on roads adjacent to Site 200 and on Corral Hollow Road south of Site 300. However, the main thoroughfare is Interstate 580, which is approximately one mile north of both Site 200 and the northern boundary of Site 300. A railroad runs approximately one-quarter mile north of Site 200 and one-and-a-half miles north of the northern boundary of Site 300. The manager of train 15