Design and Operations Plan - RDN Regional Landfill
Background & Objectives
|The D & O Plan will enhance the Regional Landfill's landfill gas collection system, which provides feedstock for the on-site landfill-gas-to-energy facility.|
In 2007, the RDN initiated a Design and Operations (D & O) Plan for the Regional Landfill located on Cedar Road in south Nanaimo. The plan integrates the long-term development of this engineered sanitary landfill and infrastructure improvements with progressive closure of the site as a nature park amenity.
The D & O Plan ensures that the Regional Landfill's design and operations minimize potential impacts on human health, the environment, and adjacent properties and their residents. These include surface and ground water protection and monitoring and landfill gas management.
The Regional Board approved the draft D & O Plan in 2009 following a positive response to consultations with households adjacent to the landfill and it received BC Ministry of Environment approval in August 2010.
- Adopt the requirements of the landfill's Operational Certificate issued by the BC Ministry of Environment;
- Address Cell One (closed unlined landfill area) leachate issues resulting from settling of waste;
- Plan and integrate progressive closure of the landfill site to support phasing in the development of the nature park concept;
- Identify key infrastructure and environmental control elements and coordinate them with ongoing development and operation of the site, staged expansion, and progressive closure;
- Enhance the landfill gas (LFG) collection system to reduce greenhouse gas emissions and provide feedstock for the on-site landfill-gas-to-energy facility;
- Update the landfill fill plan and integrate it with environmental controls (surface water, leachate and LFG management);
- Review and update the landfill's environmental monitoring programs to reduce impacts from landfill operations;
- Optimize available landfill capacity to maximize site life; and
- Forecast capital requirements for landfilling stages and infrastructure projects over a 20-year lifespan.
Key Components of the D & O Plans
Cell One Remediation
|Fill was added to Cell One to re-grade its slopes.|
In 2004, the RDN consulted with adjacent residents and property owners on long-range planning for the Regional Landfill and future closure options for the facility. The resulting post-closure implementation plan reflected the site's preferred use as a nature park amenity.
Development of the nature park will be implemented in three phases. The first two phases will be sited on the Cell One unlined portion of the landfill, which was closed in 1996. In 2006, hydrogeological studies were conducted in support of development of the nature park.
The ground and surface water studies identified excess leachate being generated due to settling of waste in Cell One and possible bedrock conduits for leachate migration. Correcting these issues required infilling, re-grading and re-contouring Cell One to improve surface water runoff and reduce leachate generation.
Cell One area leachate and stormwater collection improvements were completed in 2009. Fill was added to Cell One in 2010 to re-grade the slopes of the area that will comprise the first phase of the nature park. During the summer of 2011 this area will be reclosed with a cover system incorporating a polyethylene liner.
Enhancing Landfill Environmental Protection, Capacity and Operations
- Developing the north berm area to address stability concerns in 1991/1995 lined portions of the landfill and facilitate a north stormwater infrastructure to improve the water quality of Fielding Creek;
- Relocation of the maintenance shop and siting a new operations/administration building; and
- Extending the southwest berm.
Multi-Stage Fill Plan
The D & O Plan has prepared a multi-stage fill plan that provides estimates of the total capital costs for development and final closure of the Regional Landfill, including construction of the nature park concept.
The costs of landfilling stages and infrastructure projects over a 20-year lifespan are estimated to be $36 million. Funding for these projects will be sustained through tipping fees (landfill disposal charges) with no impact on property taxes.