Sorrell Landfill
S&ME assisted this client in finalizing closure requirements for a subtitle-D landfill in accordance with NCDENR-DWM guidelines. Our landfill closure services included site capping recommendations, verification, and preparation of a water quality monitoring plan (WQMP). S&ME also prepared a final closure and post closure care plan. Field activities included soil cap thickness testing, installation of new monitoring wells, hydraulic conductivity tests of the new wells and sampling of the site monitor wells to establish baseline water quality.
S&ME managed all aspects of post-closure compliance including semi-annual water quality monitoring and quarterly methane monitoring. Our professionals designed and implemented corrective actions to address excessive gas levels at the compliance boundary. In addition, we provided characterization of groundwater impacts in order to develop remedial corrective actions. Finally, S&ME provided environmental compliance monitoring of groundwater and surface water.
Highlights
- Completed an Assessment of Corrective Measures and Revised Methane Corrective Action Plan
- Site characterization included waste delineation/evaluation of landfill gas production using USEPA Landfill Gas Emissions Model (LandGEM) as well as pressure tests on existing passive landfill gas (LFG) vents
- Oversaw the installation of 13 additional passive LFG vents at the landfill
- Field assessment activities included depth-to-water measurements, sampling and characterization of the liquid from inside the vents, pressure tests on the passive vents and gas quality measurements