Most States Pass 90 Percent MACT Rules If There Is No National Rule on Mercury

A number of states have already passed mercury rules to require 90 percent removal at some point over the next ten years. There is a likelihood that in the absence of a new CAA most other states would pass similar regulations.

Mercury is Linked to Autism or Major New Health Problem

In May 2008 a study showed higher prevalence of autism near coal fired plants. But since mercury travels some distance it is unlikely that this finding will be more than coincidence. However, there is an outside chance that mercury would be linked to some serious problem for which it is not now presently blamed. This could push the mercury removal efficiency requirements beyond the 90 percent.

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