Comcor became the City of London’s primary landfill gas consultant in 2002 when it was retained to conduct a pump test to determine if a full-scale landfill gas collection system would be beneficial for reducing gas emissions and odours at the W12A Landfill. Comcor designed the permanent landfill gas collection and flaring system in 2004 and has completed the design of all major expansions to the system that have occurred from 2006 to the present. Comcor has operated and maintained the landfill gas facility for the City since it was commissioned in 2005. Since 2005 Comcor has worked closely with the City to ensure that the landfill gas collection wellfield infrastructure is collecting as much landfill gas as possible, by expanding the infrastructure as landfilling continues and balancing the wellfield vacuum to ensure maximum recovery potential.
The City also retained Comcor to evaluate the site for landfill gas utilization potential and to estimate utilization costs. In 2014, Comcor was retained to prepare a preliminary design and cost estimate for a greenhouse landfill gas utilization project. In 2016, the City retained Comcor to evaluate the potential to generate 500 kW of power using landfill gas and send it to the grid under the Independent Electricity System Operator’s (IESO’s) Feed-In-Tariff (FIT) 5.0 Program. Comcor submitted a final report to the City in October 2016.
In 2015, Comcor was retained to recommend and design a method of sealing the edge of the existing leachate collection system (LCS) in order to avoid air intrusion while actively collecting landfill gas from the LCS.
Since Comcor currently operates and maintains the City’s existing landfill gas collection and flaring facility, it continually makes recommendations for on-going maintenance and replacement of equipment that will complement future landfill gas utilization.