Our CCR practitioners tackle technically challenging projects related to landfills, surface impoundments, and containment dams. New regulations from the United States Environmental Protection Agency for coal waste disposal and proposed regulations for effluent limitations from steam electric-power-generating units require new controls on CCR management. In some cases, these regulations make it impractical for utilities to continue to operate some of their CCR landfills and surface impoundments. Geosyntec specializes in the design, permitting, and construction of closure systems for these types of facilities.

Our experience includes design and permitting, operational-life requirements, and effective closure and site reclamation for CCR ponds, including the following:

• Impoundment inspections
• Design of fly-ash-impoundment repairs
• Slope stability analysis
• Static liquefaction analysis
• Design of landfills on top of fly-ash ponds
• Seepage studies
• Dewatering and capping of CCR surface impoundments
• Construction over closed or closing CCR surface impoundments
• Construction management and quality assurance

ELECTRIC POWER GENERATION

Relying on research partnerships and industry experience, we have expanded the solutions we offer to our electric-power-generation clients, innovating in the following ways:

• Authoring Electric Power Research Institute (EPRI) search wer ectric PRI guidance documents on a multitude of engineering properties and processes related to CCRs.
• Performing phytocap closures of several large ash ponds for a utility in the Southeast United States.
• Conducting long-term chemical-compatibility testing for geosynthetic clay liners (GCLs) to receive a first-time approval from the state regulatory agency.
• Designing and receiving state regulatory approval for a steep reinforced-soil-slope containment system for a CCR landfill vertical expansion.