All HAPs Emission Trends

This performance measure encompasses emissions of more than 400 different chemicals that are listed by Wisconsin and/or the federal government as hazardous air pollutants (HAPs). The human health and environmental effects of HAPs vary from chemical to chemical. Concise information on all of the listed HAPs is not available at this time, but a wealth of information covering more than a hundred HAPs is available from the U.S. Environmental Protection Agency website at Health Effects Notebook for Hazardous Air Pollutants.

Just as we saw with the previous performance measures, the trend in HAP emissions among ECPP participants is very encouraging. Total HAP emissions have declined by nearly 30% from baseline levels, even with a slight increase in 2004 and 2005. At the rest of Wisconsin’s stationary sources, HAP emissions have varied erratically from year to year. The latest statewide HAP emissions data from 2006 show a modest 7% decline from baseline levels.