Tonnage
40tph
Material
Contaminated Soils, Dredged Sands, Hydro Excavation Waste, Non Hazardous Soils, Road Sweepings & Gully Waste
Output
4" minus rock | Oversize rock | Pea gravel | Sand | Clay for capping
THE CHALLENGE
Partnership has resulted in the diversion of over 70,000 tonnes from landfills since June 2021.
Located in Nanaimo, near the southern end of Vancouver Island, GRT’s Resource Regeneration Facility partnership with industry experts CDE has led to the responsible recovery and recycling of a range of clean and contaminated soils in southern British Columbia.
As urban development sites become increasingly scarce in British Columbia, available land often requires soil removal to remediate trace contamination, or because excavated material isn’t structurally suitable to be reused as fill.
GRT’s founders recognized an opportunity for resource recovery in the region and, in CDE, found the solution provider that could assist them in realizing the environmental and fiscal goals set for the company.
THE CDE SOLUTION
GRT chose to invest in CDE technology that would establish its footprint in the Pacific Northwest, increase its capacity to receive more soil and support the company’s research and development efforts to offer coal removal from soil – a main contaminant in the Nanaimo region.
GRT receives raw feed material from various locations throughout the region, including excavations for residential developments, brownfield/remediation sites, tunnelling projects, hydrovac trucks, and river or ocean dredge projects.
GRT’s facility uses an extensive CDE wash plant that includes a CDE feed hopper, and the pioneering AggMax modular logwasher. The AggMax combines pre-screening, scrubbing and organics removal within the Rotomax logwasher, sizing, stockpiling, fines recovery and filtrates removal on a compact chassis. The Rotomax is a high-efficiency, heavy duty unit that incorporates several design features to ensure maximum performance and minimum wear with even the most challenging feed materials.
An EvoWash sand washing and classification unit with modular hydro cyclone technology gives GRT unparalleled control of silt cut points – producing high-quality in-spec materials. Combined with CDE’s patented Infinity dewatering screen technology, it results in an increased power to weight ratio for lower running costs through reduced power consumption.
The AquaCycle is a high-rate thickener and primary stage water management system, that recycles up to 90% of the process water for re-use in the system, GRT combines the AquaCycle with its own wastewater treatment technologies to remove environmental contaminants from the water. This minimizes discharges to the environment, which is in line with GRT’s ethos of environmental responsibility.
THE RESULTS
The plant produces 40tph of reusable and resaleable products that are supplied to the local construction industry, including sand, pea gravel, oversized rock and 4” minus rock. The leftover contaminated material is currently incorporated into GRT’s clay output, then transferred to a provincially permitted facility to be beneficially reused as landfill cover. GRT are also exploring ways to extract more benefit from this product.
Now a successful construction aggregates supplier, GRT was established with a commitment to environmental responsibility and the circular economy, while ensuring mutually beneficial relationships with local First Nations.
Adrian Convery, Business Development Manager for the Americas at CDE said, “GRT’s business model transforms the existing value chain in Vancouver Island. It has been a great experience to have worked with a team that shares our values and objectives from the inception of this partnership, and CDE look forward to developing this partnership in the near future.”