It should be improving. The city recently banned, with no grandfathering, boilers using #6 fuel oil. Before it put in the new regulations, it had found that 86%

It should be improving. The city recently banned, with no grandfathering, boilers using #6 fuel oil. Before it put in the new regulations, it had found that 86% of the total building sourced soot pollution came from 1% of buildings. http://www.nyc.gov/html/gbee/html/codes/heating.shtml http://www.nyc.gov/html/gbee/html/codes/heating.shtml