California was one of the first states to codify the principle of environmental justice ("EJ"), which state law defines as "the fair treatment of people of all races, cultures, and incomes with respect to the development, adoption, implementation, and enforcement of environmental laws, regulations and policies." Historically, activism in the EJ field has focused on the siting of hazardous facilities such as landfills in poor communities of color, and on efforts to mitigate the associated pollution burden and health effects. However, procedural justice, which one researcher defines as the "fairness of the process by which goods are allocated and decisions made," is also an important component of EJ activism.