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Ag News
EPA encourages using power plant wast on farm ground
Published Thursday, December 24, 2009 at 10:12 AM
The Environmental Protection Agency believes that the use of flue gas desulfurization gypsym in agriculture is safe in appropriate soil and hydrogeologic conditions. In fact, the federal government is encouraging farmers to spread the chalky waste on their fields to loosen and fertilize soil. The material is produced by power plant "scrubbers" that remove acid-rain-causing sulfur dioxide from plant emissions. A synthetic form of the mineral gypsum, it also contains mercury, arsenic, lead and other heavy metals.

The EPA says those toxic metals occur in only tiny amounts that pose no threat to crops, surface water or people. But some environmentalists say too little is known about how the material affects crops, and ultimately human health, for the government to suggest that farmers use it. Jeff Ruch, executive director of Public Employees for Environmental Responsibility, says - this stuff has materials in it that we're trying to prevent entering the environment from coal-fired power plants, and then to turn around and smear it across ag lands raises some real questions.

EPA is expected to announce its proposals for regulation for coal waste early next year, setting the first federal standards for storage and disposal of coal wastes. According to the EPA, - field studies have shown that mercury, the main heavy metal of concern because it can harm nervous-system development, does not accumulate in crops or run off fields in surface water at "significant" levels.

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