FILE - In a Feb. 26, 2014, file photo, coal ash is loaded into a truck at the Jefferies power generating station just outside Moncks Corner, S.C., operated by Santee Cooper, South Carolina's ... more 
FILE - In a Feb. 26, 2014, file photo, coal ash is loaded into a truck at the Jefferies power generating station just outside Moncks Corner, S.C., operated by Santee Cooper, South Carolina's state-owned electric and water utility. On Monday, June 2, 2014, the Environmental Protection Agency proposed that South Carolina reduce carbon dioxide emissions from power plants by more than half by the year 2030. (AP Photo/Bruce Smith, File) less 
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Associated Press | Photo By Bruce Smith, File
Mon, Jun 2, 2014 11:51 AM EDT