CalEnviroScreen directs billions of dollars to California communities in need. Here’s how it works
CalEnviroScreen — short for California Communities Environmental Health Screening — was developed by the state Office of Environmental Health Hazard Assessment to help identify communities that are most burdened by environmental issues. … The methodology behind some measures is straightforward, like air quality. For air quality, the tool pulls the annual mean concentration of particulate matter (PM) 2.5 of each census tract from California Air Resources Board data. Others, such as drinking water contaminants, are more complicated and involve combining data points from a variety of sources.
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