CEC provides comprehensive services to address all aspects of landfill gas control and compliance.
Management of landfill gas (LFG) is one of the key environmental compliance challenges facing solid waste landfill facilities today. With the rate of production affected by waste composition, moisture, and landfill geometry, and influenced by the microbial populations and the biological ecosystems within it, LFG creates challenges and opportunities for landfill operators. CEC provides:
LFG Engineering Services
- Landfill gas collection and control systems (GCCS) master planning, permitting, design, development, and construction oversight (process utility & enclosed flare, compressor & treatment system design, facility layout, equipment specifications, process flow diagrams (PFD), process & instrumentation diagrams (P&ID))
- Design and specification of condensate management and treatment systems
- Design and specification of transmission, filtration, dehydration, separation, combustion, and beneficial utilization equipment and systems
- Customized LFG generation and recovery modeling
- Odor evaluation and mitigation and hydrogen sulfide generation modeling
- GCCS Wellfield Tuning and Optimization
- Wellfield Performance and Integrity Assessments
- RNG Plant and Pipeline Development Permitting and Engineering Assistance
- Surface Emissions Monitoring Plan Preparation and Updating
- Five-Year Landfill Gas Planning
Air Permitting and Compliance Services
- State air permit preparation and management, including major sources, PSD and NSR related to landfill expansions, flare systems and energy recovery projects
- Deviations and exceedances reporting
- Federal Title V program permitting, compliance and reporting services
- Clean Air Act (CAA) NSPS and NESHAPS program management, including applicability review, testing, compliance and reporting
- Federal and state greenhouse gas compliance, data management and reporting (Federal Rule Part 98)
- LFG system monitoring and operations data management and reporting
- Air modeling to landfill area sources and point sources using AERMOD and other EPA-approved models
- RNG Plant Air Quality Permitting
Technical Field Services
- Routine operations and maintenance (O&M) of landfill dual leachate/LFG collection wells and GCCS
- Operation of pump systems, including gas well pump systems, leachate pumps, pumping stations and storage (including controls, electric and heating systems)
- GCCS data management
- GCCS diagnostics, troubleshooting and specialized field evaluations, including camera inspections
- LFG monitoring, including odor surveys, surface emissions, gas migration probe and structure monitoring
- LFG testing programs, including Tier II sampling and analysis
- Specialized electrical control system diagnostics and repair services for flare systems, blower systems and other electronic controls
- Installation and calibration of meters and data acquisition systems
Specialized Construction Services
CEC has a full suite of equipment to handle GCCS extraction well and piping repairs, including butt fusion (up to 12 inches) and electrofusion welding. CEC also has the capabilities to perform extrusion welding repairs to geomembrane liners and caps and routinely performs:
- Oversight of LFG extraction well drilling
- CQA for wellfield construction and expansion
- As-built Survey
- Construction Completion Reports
Other Specialized Landfill Gas Consulting Services
- Non-BACT technology review (i.e., siloxanes, H2S treatment)
- Methane soil vapor extraction/mitigation system design
- Elevated temperature landfill evaluations and cooling technologies; mitigation of self-sustaining exothermic pyrolysis reactions and subsurface oxidation events
- Heat accumulation prevention and elevated temperature evaluation and planning
- Beneficial utilization options evaluations including technology review, feasibility studies, pro-forma financial analyses
- Expert witness and expert testimony services
