Leachate Collection
Leachate is liquid generated from rainfall and the natural decomposition of waste that is filtered through the landfill to a leachate collection system. The leachate collection system's job is to direct the leachate to collection sumps so it can be properly removed from the landfill.
The leachate collection system is designed with a minimum 2 percent slope to drain to collection sumps. A leachate collection sump consists of an HDPE riser and submersible pump. Leachate drains to the leachate collection system, where it is transferred to a central collection pump and piped to an onsite holding tank or it can be re-circulated in the areas underlain by Subtitle D liner system. As necessary, the leachate stored in the tanks is transported to an approved offsite wastewater treatment plant for disposal. The leachate collection system is designed to automatically pump the leachate to prevent accumulation of leachate within the leachate collection layer.
