Meadowland Peat Landfill Closure

Ocean Trailer
Delta, BC

The Meadowland Peat Landfill Closure site was a privately owned landfill consisting of approximately 20,000 m³ of demolition, land clearing and construction (DLC) waste. JJM worked with the site owner and project engineer to develop a remediation plan to relocate and consolidate the DLC waste in a new, contained landfill structure that could serve as a 6 Ha parking area for the owner’s use.

DLC waste was excavated and relocated to a new, prepared location on site, while utilizing construction methods and site planning to minimize the risk of igniting a fire in the waste material. The prepared site included the installation of an impermeable liner (nearly 33,000 m² LLDPE liner installed) and leachate collection system. The leachate collection system installed directs the captured leachate into the sanitary sewer system for treatment and disposal.

The new landfill structure incorporates a geomembrane cap to prevent future leachate production by shedding 100% of new precipitation. It also allows for the capture of close to 100% of the landfill gas generated, enabling greenhouse gases to be diverted from the airshed through this system. The final cover system will serve to shed precipitation away from the DLC waste and the landfill site, dramatically reducing the future generation of leachate. Surface runoff management incorporates a 1,000 m² storm retention pond to moderate flows from the site. The overall drainage management system installed allows clean surface water to be channelled and released into the environment without treatment.

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