Tetra Tech provides complete planning, permitting, compliance, design, and construction phase services for coal combustion residual (CCR) disposal landfills and impoundments.

Tetra Tech understands the formidable challenges facing coal-fired generation facilities from recently issued and pending federal regulations and has extensive experience working with electric utilities throughout the United States to address their CCR management needs. We have wide-ranging technical experience providing full lifecycle services for CCR disposal landfills and impoundments. Our subject matter expertise is complemented by local regulatory relationships and knowledge.

Tetra Tech’s world-class design capabilities address the range of compliance support services. Our CCR waste management services include:


  • CCR strategic planning and consulting
  • CCR compliance program development and implementation
  • Impoundment closure strategy development and support
  • Geotechnical investigations
  • Hydrogeologic investigations
  • Beneficial reuse analysis
  • Site and risk assessments
  • New impoundment site selection
  • Plant optimization
  • Water balance studies

Permitting and Compliance

  • CCR program compliance management and support
  • Environmental management system development, deployment, and management
  • Groundwater monitoring, including detection, assessment, and corrective action
  • Groundwater investigation
  • Statistical analyses
  • Impoundment permitting
  • NPDES permitting support
  • USACE permitting support
  • Stormwater management

Design and Construction

  • New impoundments and landfills
  • Impoundment and landfill expansions
  • Impoundment and landfill closure and retrofit
  • Geosynthetics installation (liner, geotextile, and geocomposite)
  • Sediment controls
  • Facility decommissioning
  • Remediation of groundwater, sediments, and soil
  • Remediation of manufactured gas plant sites
  • New or upgraded wastewater treatment plants
  • Pipeline and pump station design
  • Plant design
  • Transmission line siting, design, and permitting


  • Compliance planning, training, and inspection
  • Permit modifications
  • Air permit source testing, monitoring, recordkeeping, and reporting
  • Wastewater discharge monitoring and reporting
  • Noise complaint resolution
  • Operational environmental compliance reporting
  • EHS audits and audit programs
  • Section 316 retrofits and monitoring 

Related Services

  • Construction certification and quality assurance
  • Construction management and monitoring
  • Project controls
  • Critical flaw analyses
  • Due diligence