Closing and capping our ash ponds and other impoundments

Environmental coordinator standing in front of ash pond

As a result of the EPA's more stringent CCR Rule standards, we -- along with other utilities across the country -- launched aggressive projects to systematically close out all of our remaining ash ponds and wet surface impoundments.

Closure Construction
Closure construction projects are well underway at our Green River power plant. The photo on the left was taken in the winter of 2017, while the photo on the right was taken in the fall of 2018.

Once processed, the dry CCR materials will be managed on site at our power plants or beneficially used offsite for materials, such as concrete, wallboard or fertilizer.

We are operating our power plants’ new CCR treatment and dry management facilities at all four coal-fired stations.  We also are in the final stages of construction and commissioning of new state-of-the-art process water treatment facilities at Ghent, Mill Creek and Trimble County. 

Cane Run before and after
Before and after: At our now-retired Cane Run power plant, we have closed and capped the ash pond and dry landfill. In these photos, you can see what these projects looked like during and after construction. 

Learn more about what we are doing at each power plant

Mill Creek

Mill Creek

  • Closure construction plans are underway, with three of five CCR impoundments already closed. 
  • Additionally, we are constructing a new process-water treatment system to treat waters that come in contact with CCR materials in the scrubbers prior to the impoundments being closed. The new system will be commissioned in the spring of 2019. 

Ghent

Ghent

  • Closure construction plans are underway on four of five impoundments at the plant. 
  • We’re already operating new CCR treatment facilities at the plant, and we are constructing a new process-water treatment system to treat waters that come in contact with CCR materials prior to the ash ponds being closed.  It’s expected to be complete in the summer of 2019. 
     

Trimble County

Trimble County

  • The engineering and construction for new CCR treatment facilities are in progress. 
  • We are constructing a new process-water treatment system to treat waters that come in contact with CCR materials prior to the ash pond being closed. It’s expected to be complete in the summer of 2019.  

E.W. Brown

E.W. Brown

  • Closure construction plans are underway.
  • We’re already operating new CCR treatment facilities at the plant.
  • We also recently announced plans to reduce the size of our landfill by a third, eliminating an entire section that’s no longer needed. 
  • We are constructing a new process-water treatment system to treat waters that come in contact with CCR materials prior to the ash pond being closed.  It is expected to be complete in the fall of 2019. 

Cane Run, Green River, Pineville and Tyrone

Cane Run, Green River, Pineville and Tyrone

  • We have closed and capped the ash pond, smaller process ponds and dry landfill at our now-retired coal-fired Cane Run power plant.
  • Closure construction projects are underway at the now-retired Green River, Pineville and Tyrone power plants with completion planned in 2019.