How to calculate years of life saved by reducing particulate matter in your city or neighborhood

Source: New York Times

A few days ago, the New York Times published an excellent article, The Connection Between Cleaner Air and Longer Lives, which included this chart.  

This was a very important article for many reasons. Chief among them, in my opinion, is the value of the methodology they used for community groups.

I think their Overview on Methodology for Clean Air Study provides a road map citizen scientists could use to show the health cost of dirty air in their community, and the years of life residents would gain from cleaning it up.

What do you think?  Please share your comments here.