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At what level are emissions harmful?

July 3, 2012
The Journal

To the editor:

The June 22, 2012 'Coal as a loser' authors say: "power plants that burn coal produce 90 times as much sulfur dioxide, five times as much nitrogen oxide and twice as much carbon dioxide as those that run on natural gas... The health reasons alone seem to mandate the use of anything available but coal!"

The problem with that statement is that it does not tell us what the tolerable levels are. They need to tell us what the parts per million concentration in the atmosphere has to be before it is a definite health risk.

Phil Drietz




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