The primary methods of ash pond dewatering are:
Lowering the water content of ash pond materials by pre-drainage increases coal ash cohesion and stability.
This allows for vertical cuts to be made for large scale excavation with conventional excavation equipment.
Griffin offers systems to address standard groundwater issues such as:
Ash Recovery Project - Tennessee Valley Authority
Griffin was contracted to lower water in ash more than 10’, creating a stable working platform and allowing a barrier wall to be constructed.