In a move with major implications for future air quality regulations, the US Environmental Protection Agency Friday proposed to rescind the legal justification for an Obama-era rule that has dramatically reduced emissions of mercury and other toxic pollutants from existing coal- and oil-fired power plants. Receive daily email alerts, subscriber notes & personalize your experience. Register Now But despite uprooting the rule’s legal underpinning, the agency is proposing to keep its current performance standards for those electric generating units in place. The EPA is also proposing to determine that no further pollution reductions are necessary as part of a required eight-year review. At its core, the December 28 proposal hinges on revoking an earlier finding that it was “appropriate and necessary” to regulate power plants through the […]