Coal ash ponds—once a standard practice for storing waste byproducts from coal-fired power plants—are now known to pose serious risks to water quality, soil health, and surrounding ecosystems. With heavy metals like arsenic, lead, and mercury commonly present in coal ash, these unlined or aging impoundments threaten both nearby communities and long-term environmental compliance.
Key Environmental Risks of Coal Ash Ponds
- Leaching of heavy metals into groundwater aquifers.
- Surface water contamination during storms or flooding events.
- Structural instability of older or unlined ponds.
- Airborne dust from dried coal ash if not properly capped.
- Public health exposure risks to nearby communities.
Remediation Techniques for CCR Units
Remediation approaches must be selected based on site characteristics, pond size, contaminant levels, and future land use plans. Common strategies include:
- Cap-in-place closure using synthetic liners and engineered soil covers.
- Full excavation and off-site disposal to licensed landfills.
- On-site stabilization/solidification using binding agents.
- Installation of groundwater monitoring and collection systems.
- Long-term closure plans with post-remediation monitoring.
Regulatory Requirements and CCR Compliance
The EPA’s CCR Rule outlines closure requirements and performance standards for active and inactive coal ash ponds. Facilities are required to:
- Conduct groundwater monitoring and publish results.
- Determine closure method by deadline based on pond condition.
- File permit applications and complete public notification.
- Maintain post-closure monitoring for a minimum of 30 years.
Why Choose O6 Environmental
Our coal ash remediation experts help clients navigate complex CCR compliance with turnkey services that include site investigation, closure design, excavation support, regulatory coordination, and long-term monitoring programs.
Protect Water and Stay Compliant
Don’t wait for enforcement action. If your facility manages CCR units, O6 Environmental can help you plan and implement a sustainable and compliant remediation strategy.
