Two Entergy Arkansas Coal Plants Ranked on List of Nation's 'Dirtiest' by Luke Jones Posted 10/14/2013 12:00 am A study ranking the nations' 50 most polluting power plants is highlighting some of the issues electric industries in Arkansas and elsewhere are facing as environmental regulations change. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 20 days. Purchase Now Already have archive access? Login to view this article.