Rules Limiting Heavy Metal Pollution Are Economically Defensible, EPA Says

Costs of regulating toxic emissions from oil- and coal-fired power plants are economically reasonable given their myriad public health benefits, the Environmental Protection Agency said Friday. This statement could lead courts to confirm limits to heavy metal pollution from power plants....
http://thinkprogress.org/climate/2016/04/15/3769867/mats-rule-is-reasonable/