Client: Regional District of North Okanagan
Location: Armstrong Spallumcheen, Greater Vernon, and Lumby Recycling and Disposal Facilities
Project Date:

2009 – 2019

   

XCG was retained by the Regional District of North Okanagan in 2009 to develop a Hydrogeological Performance Assessment and Design and Operations Plan for the Armstrong Spallumcheen Recycling and Disposal Facility. As a component of this work, XCG developed an Environmental Monitoring Program for the site, which included groundwater, surface water, and landfill gas sampling. This Environmental Monitoring Program was updated in 2012.

Over the years, XCG has provided environmental monitoring services to the Regional District in the form of landfill gas sampling and reporting and landfill gas training for technical staff. Training included an overview of monitoring equipment, calibration, maintenance, monitoring procedures, trigger levels, and contingency response protocols.

The Facility historically utilized a poplar plantation to manage leachate from the lined portion of the landfill. This plantation, however, was nearing the end of its effective lifespan. At the same time, questions arose regarding the performance of the site’s attenuation zone and whether there was risk to down-gradient groundwater receptors from the unlined portion of the landfill.

In 2016, XCG undertook a Hydrogeological Performance Assessment to evaluate the performance of the attenuation zone and to identify any gaps in the hydrogeological knowledgebase for the site. Based on the results of this assessment, XCG reviewed leachate management options for the landfill to identify a practical, cost-effective, and sustainable solution for continuing to manage leachate on-site.

The preferred option was selected based on site-specific feasibility, potential environmental impacts, existing landfill structure, proximity to municipal infrastructure, regulatory environment, and capital/operational and maintenance cost considerations.

Ultimately, XCG recommended the use of a combined evaporation, phytoremediation strategy. This leachate management strategy has the advantages of low long-term capital and operational costs, simple operation, and will be sustainable for both the active and post-closure life of the landfill.

In 2017, XCG was retained by the Regional District of North Okanagan to undertake an update of the Design, Operations, and Closure Plans for the Greater Vernon and Lumby Recycling and Disposal Facilities. As a component of this work, XCG prepared updated Environmental Monitoring Programs for both sites, including groundwater, surface water, and landfill gas monitoring, regulatory criteria, and contingency response programs.

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