The study also looked at the number of people of different age groups within the area. The population with age below 5 years and those above 65 are most susceptible to the carcinogens. Therefore, emphasis has been given particularly to these two age groups. Variations in the different racial groups were studied, i.e., which racial groups dominate in the sphere of influence of the industries.
The limitation of the study is that the data uses only the OSHA carcinogens which is comprised of only 4 groups of chemicals: arsenic compounds; dioxin and dioxin-like compounds, chromium compounds, lead compounds, and polycyclic aromatic compounds (PACs). Further study on all carcinogens could benefit the local population and policy makers to establish reduction targets and measure progress toward those targets.