Coal-fired power plant scrubbers now remove 80-90 % of airborne particulate, mercury, sulfur dioxide, nitrogen oxide and other pollutants. But that means "fly ash" and noncombustible residues (what we used to call clinkers) must be sent to landfills. That's opened a new front for anti-energy activists, who use accidents, "detectable" pollutants in water, and scary stories about health threats to advance their agenda.
In 2008, a Tennessee Valley Authority earthen retainer dam near Knoxville ruptured, sending 5.4 million cubic yards of rain-soaked fly ash into a nearby river, lake and neighborhood. Twelve homes were damaged by the muck, which contained low levels of arsenic, cadmium and other metals. The TVA's cleanup efforts were less than exemplary, as were its measures to prevent the accident in the first place.
