Duke Energy statement in response to new well testing results

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CHARLOTTE, N.C. - Duke Energy today issued the following statement regarding background well sampling data released by the North Carolina Department of Environment and Natural Resources (NCDENR). The state tested 24 private wells, known as background wells that are near but not influenced by Allen, Buck and Marshall Steam Stations. The objective was to understand which constituents are naturally occurring in the groundwater in the area and then compare it to approximately 300 tests from wells within 1500 feet of ash basins. The state used several criteria to ensure the background wells could not have been impacted by coal ash basins.

The State has now tested wells near coal ash basins and wells that are far enough removed from the basins to be unaffected by them. The new results validate what we and others have been saying— - the constituents found in the water samples occur naturally at various levels across the state.

In addition, the background wells and the vast majority of private wells tested, all meet federal drinking water standards.

The information serves as another piece of the puzzle, combined with historic groundwater monitoring data, and private well testing near our facilities, that we find encouraging. But our work is not done. Very detailed groundwater assessments are being conducted now, including thousands of pages of scientific and engineering study by outside experts, to produce the most comprehensive picture of the groundwater under and around our facilities.

Very importantly, we will continue to work closely with plant neighbors, sharing updates and information as we learn it.

Duke Energy

Duke Energy is the largest electric power holding company in the United States. Its regulated utility operations serve approximately 7.3 million electric customers located in six states in the Southeast and Midwest. Its commercial power and international energy business segments own and operate diverse power generation assets in North America and Latin America, including a growing portfolio of renewable energy assets in the United States.

Headquartered in Charlotte, N.C., Duke Energy is a Fortune 250 company traded on the New York Stock Exchange under the symbol DUK. More information about the company is available at www.duke-energy.com.