The Samish Island BESS emergency plan acknowledges that a battery failure could involve thermal runaway, toxic gas release (including hydrogen fluoride and carbon monoxide), fire, explosion hazards, and the potential need for evacuation based on wind direction and incident conditions. The plan includes emergency shutdown procedures, coordination with fire responders, gas detection systems, and guidance for managing re-ignition risks that can persist after an initial fire appears extinguished. It also addresses the use of water for fire suppression and the need to contain contaminated runoff to prevent impacts to surrounding properties and environmentally sensitive areas, including nearby wetlands.