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Mercury


Groups File Legal Challenges to ACE Rule

Legal challenges to the Trump administration’s Affordable Clean Energy (ACE) rule began in earnest April 17, as more than two dozen states and cities, along with several environmental activist groups,…


EPA Nixes Legal Justification for MATS Rule

The Environmental Protection Agency (EPA) on April 16 withdrew the legal justification for an Obama-era rule that required coal-fired power plants to reduce their emissions of mercury. The Mercury and…


Mercury Remediation System Reduces Contamination in Power Plant Wastewater

A new system to remove dissolved (ionic) mercury, along with other contaminants, from power plant wastewater is being developed. It is free of the drawbacks of using a traditional stannous…


EPA: Mercury Rules for Coal, Oil Power Units Not ‘Appropriate and Necessary’

Because compliance costs to coal- and oil-fired power plants for the Mercury and Air Toxics Standards (MATS) far exceed quantifiable benefits to regulating hazardous air pollutant (HAP) emissions, the Trump…


How Did MATS Affect U.S. Coal Generation?

Industry aggressively fought the Mercury and Air Toxics Standards (MATS) when the Obama administration proposed it in 2011 and finalized it in February 2012, warning it would precipitate the closure…