Exhibit 12 Change in Incidence of Adverse Health Effects Associated with Reductions in Particulate Matter and Ozone Due to the Clear Skies Act 
There was a 50% decline in health related issues and ozone issues as a reult of the Clear Skies Act
mnli hypothesis: There was a 50% decline in health related issues and ozone issues as a reult of the Clear Skies Act premise: Exhibit 12 Change in Incidence of Adverse Health Effects Associated with Reductions in Particulate Matter and Ozone Due to the Clear Skies Act 