* Starting in 2015, the EPA ceased publishing data for this data series because gases that previously comprised this data are now assigned as global warming potentials.
Years Available: 2010–2014
Permanent Link: http://data.sagepub.com/sagestats/4098
General Notes: *Median value gives the value for the "average" county for this metric, the 50th percentile of all counties reporting data. **Values derived by SAGE using the sums of values for facilities listed by county in original data. Visit "Original Link" for full listing of facilities.