Releases of toxic chemicals into the air fell 56% from 2005-2015 at industrial facilities submitting data to the Toxics Release Inventory (TRI) National Analysis, according to the EPA. The recently released report shows an 8% decrease from 2014 to 2015 at facilities reporting to the program contributed to this ten-year decline. Hydrochloric acid, sulfuric acid, toluene and mercury were among chemicals with significantly lower air releases at TRI-covered facilities.