• Cowichan Valley Regional District - Solid Waste Management Plan

• Regional District of Nanaimo -  Solid Waste Management Plan - Stage 2

• District of Mission - Minnies Pit Landfill

• City of Surrey - Port Mann Landfill

• Regional District of Nanaimo - Cedar Landfill

• Cowichan Regional District - Bings Creek Solid Waste Management Complex

Cowichan Valley Regional District - Solid Waste Management Plan

Stage 1 of the Solid Waste Management Plan (SWMP) involved identification of existing solid waste practices, solid waste stream analysis and preliminary evaluation of landfilling, incineration, composting and recycling options.  

Stage 2 included 3Rs programs to achieve a staged 50% reduction in solid waste requiring disposal were developed. Disposal focused on sanitary and select material landfills.  Separate siting studies were undertaken.  Stage 2 of the plan process also involved site specific hydrogeotechnical studies for the selected landfill site, concept design of the engineered landfills, concept design for drop-depots and a concept design for a materials recovery facility with transfer station for residuals. 

Stage 3 involved a description of the plan elements and included an implementation schedule and cash flow schedule.

Cost estimates were done for incineration with power generation to serve as primary disposal option for District SWMP.  This will allow the District to compare with the approved Stage 2 plan that incorporates landfill disposal.



Regional District of Nanaimo - Solid Waste Management Plan

Dayton & Knight Ltd. assisted the Regional District of Nanaimo with the technical study for Stage 2 of their Solid Waste Management Plan.

Work included conceptual design of 100-400 TPD landfill including site preparation, drainage, leachate containment (clay and membrane liners), collection and disposal, site development, cover material, preliminary operation plan and leachate and gas monitoring wells. Hydrogeological and geotechnical aspects were carried out by a sub-consultant.

A conceptual design for incineration and resource recovery was developed. Incineration examined energy production, both steam and power generation. Resource recovery included production of refuse derived fuel and use of this product at a local pulp mill.



District of Mission - Minnies Pit Landfill

The work included design and construction of a leachate collection and disposal works and capping of Area B at the Minnie’s Pit Landfill. Leachate collection and disposal works included leachate pump stations, a forcemain, aerated treatment lagoon lined with HDPE geomembrane and a ground infiltration cell for disposal of treated leachate. Area B was capped with a PVC geomembrane.
 

Leachate collection at Minnies Pit landfill

Design and construction of the landfill entrance facilities including scales, a scalehouse, recycling and drop-off areas (formed with lock block walls), roadworks, fencing and surface water management works. Development of a landfill expansion and operations plan was also included.

City of Surrey - Port Mann Landfill

The Port Mann Landfill upgrade included the first installation of a leachate containment liner and cut off barrier wall for leachate collection in British Columbia.   In addition, the gas collection and disposal system was the first landfill gas installation in British Columbia specifically designed to control odour and gas migration.

The three phase project included the Phase I geotechnical hydrogeological assessment, the Phase 2 conceptual design of leachate collection system, gas collection and flaring system, leachate and gas monitoring wells, drop-off depot and site servicing and Phase 3 operation and preliminary closure plan.  The Phase 2 conceptual design for the leachate collection system included a gas collection system and flaring system, leachate and gas monitoring wells, a drop-off depot and site servicing. 

The concept design was accepted and proceeded to detail design and construction ($7 million) in 1987.  The work included leachate containment through a soil bentonite liner and barrier wall, leachate collection and pumping, landfill gas collection and incineration, landfill gas migration controls, landfill gas and leachate monitoring facilities, monitoring plan and closure plan.  The works were constructed in 1988 through 1991. Leachate, groundwater, surface water and landfill gas monitoring continues on a monthly and quarterly basis.



Regional District of Nanaimo - Cedar Landfill
 

Click on Photo Above to View

Dayton & Knight Ltd. has provided design and management services to the Regional District of Nanaimo for the 1996 expansion to the Cedar Road Landfill.   The 1996 expansion included the construction of a liner and related works over an area of 2.1 hectares.

The work involved the design and construction of an HDPE liner for leachate containment, the provision of leachate collectors including pumping stations and surface water diversions.  The liner was connected to existing liners on the west and on the North. 

The Liner consisted of the following components (from top to bottom):

In addition, liner construction included leachate collection, stormwater works and an access road.

Cowichan Valley Regional District - Bings Creek Solid Waste Management Complex

As part of the implementation of its solid waste management plan, the District commissioned Dayton & Knight Ltd. to design and provide construction inspection for its new solid waste management complex. 

The facility includes a weight scale, a "free store" building for reusable goods, a recycling depot building for private sector operation, a drop-off depot for residential waste and a 100 tonne/day transfer station designed for B-Trains in the initial years and convertible in future to conventional trailers and/or compactors. 
 

The completed site

Transfer Station      Click on Photos Above and to Left to View

For more information, please contact Jerry Sklenar (jsklenar@dayton-knight.com)
 

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