Manufacturers, processors and formulators of ag chemicals should take note that the U.S. Environmental Protection Agency’s January 25 change to its “once in always in” policy will allow facilities that have historically been regulated as “major sources” of hazardous air pollutants to be reclassified as “area” sources if they have reduced their potential to emit to below major source thresholds. Read our Emerging Energy Insights blog post here covering the topic.