Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Example of a high PM2.5 event associated with local emissions. This figure is exemplary of periods of time throughout the study period when sites surrounding the Coke plant (indicated by thick lines) experienced elevated PM2.5 concentrations due to plant emissions while all other sites (thin lines) maintained background PM2.5 concentrations.
