Waste, Hazardous Materials, Landfills, and Waste-to-Energy SOQ

Waste, Hazardous Materials, Landfills, and Waste-to-Energy | SOQ

Monitoring and reporting Migration of LFG through soil is one of the major issues of concern for landfill owners and property owners adjacent to landfill sites. We have completed LFG compliance monitoring, obtained permits and authored generation, migration studies and regulatory reports. Our staff is trained to evaluate and remediate LFG migration and our team of highly skilled hydrogeologists can also assess the impact of LFG on groundwater and create corrective action plans to remove the source and improve groundwater quality. Emergency response LFG migration from older uncontrolled landfills in areas subsequently developed for residential and commercial use can result in potential LFG concentrations which pose a risk to health and safety. WSP project managers and field personnel are well trained to respond to emergencies related to methane migration. We respond to LFG incidents related to the operation of active LFG management systems. WSP’s work in designing and installing LFG extraction systems effective in reducing long-term operation and maintenance costs includes: z Use of gas generation models such as the U.S. EPA’s LandGem and the IPCC Greenhouse Gas Inventories model z Mapping of static pressure contours and gas concentrations in conjunction with varying atmospheric conditions and soil types z Detailed extraction well casing analysis and design for deep landfill application z Header and sub-header analysis and design z Location and design of vacuum pressure plants and monitoring assemblies and associated flare or recovery processes z Developing condensate recovery and management systems to accommodate landfill settlement and prevent plugging of the LFG collection system WSP’s engineers use a combination of proven design methods and extensive previous experience when designing collection systems. The landfill gas generation models are selected to best utilize the client’s available information on waste composition and quantity, landfill site conditions, and existing landfill gas management to enable assessment of the best combination of control measures.

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