http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1241174/pdf/ehp110s-000277.pdf

The report analyzes both income-based and racially based biases to the geographic distribution of some 17 different types of environmentally hazardous sites and industrial facilities in the Commonwealth of Massachusetts.The ecologically hazardous sites and facilities, ranging from highly polluting power plants to toxic waste dumps, are disproportionately located in communities of color and working class communities. We conclude that striking inequities in the distribution of these sites and facilities are placing lower-income and people of color populations at substantially greater risk of exposure to environmental health hazards. (Au)