California has approximately 140,000 businesses that are regulated for storing, transporting, or handling hazardous materials. There are also four nuclear power plant sites in the state, two of which are operational and the other two are being decommissioned. General categories of hazardous materials include chemical, biological, radiological, nuclear, explosive, oil spills and any incident that results in the release of agents into the environment.
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Depending on the severity of release and type of material, a hazardous materials emergency may cause injury, death, property damage, environmental damage, or may result in orders to evacuate or shelter in place.
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