Celina Sanitary Landfill: Operational Support and Vertical Expansion Permitting


Republic Services, Inc.


Celina, OH

CEC Services

  • Geotechnical Engineering
  • Slope Stability/Retaining Structure Design
  • NPDES Permitting Support
  • Stormwater Sampling and Permitting
  • Landfill Design and Permitting
  • Solid Waste Facility Operations Audits and Consulting

Owner Objective

Republic Services, Inc. (Republic) is the second largest provider of nonhazardous solid waste collection, transfer, disposal, recycling, and energy services in the United States, as measured by revenue.

The Celina Sanitary Landfill had less than a year of airspace, declining tonnage, and diminished profitability, so Republic was considering immediate closure of the landfill. Remaining permitted airspace construction was not cost effective, as removal of certified final cover, waste relocation, and separatory liner construction would be required. As closure plans and the public notice timelines were being discussed with CEC, a potential waste swap was identified to extend the life of the facility, enabling multi-year closure and deferring capital expenditures. CEC became involved after the waste swap was identified.

CEC Approach

CEC prepared and submitted a Vertical Expansion PTI (VEPTI) within three months. The VEPTI raised active portions of the landfill by 32 feet, adding three years of capacity. In addition to revised slope stability and settlement analysis, the VEPTI added an exterior haul road to facilitate access to the expansion airspace and facilitate phased closure. A new stormwater retention pond and NPDES outfall were also permitted to improve water quality during and after construction.

During the VEPTI design and review process, CEC provided operation support and developed interim fill plans to maximize usage of remaining airspace. During final VEPTI approval by the Ohio EPA, CEC provided design, bid support, and materials prequalification services for 9.7 acres of best available technology (BAT) final cover, which is currently under construction.