Projects | Environmental Assessment > Natural Treatment Systems
Integrated Municipal Services Rice Road Landfill Treatment Wetland, Fonthill, Ontario
UEM designed and obtained approvals for a 13 m3 / day sub-surface vertical flow wetland that reduces unionized ammonia and total phosphorous loading from landfill surface water runoff. Since the Twelve Mile creek is a particularly sensitive waterway, stringent effluent objectives were set for design. The wetland is built so that gravity regulates flows, eliminating the need for pumps or blowers and allowing the wetland to operate without any fuel or electricity. As with all natural systems, the constructed wetland is self-adjusting so that it requires very little long-term operational maintenance. Finally, by using the sub-surface vertical flow wetland, adverse cold weather impacts on biological activity are minimized.
Brock University Stormwater Treatment Wetland, Thorold, Ontario
The project involved the design, of a parking lot addition for Brock University in St. Catharines. Part of the design included stormwater collection, detention and controlled release. The storm water detention pond for this parking lot in the south campus of Brock University is designed as a dry pond with the outflow controlled by a Hickenbottom drain to the predevelopment flow. The pond has an area of 3,500 square metres and retains a volume of 3,500 cubic metres. For quality control, a natural wetland has been created within the low flow meander and is planted with cattails and willows. The detention pond controls the runoff from three parking lots totaling 1,300 spaces.
City of Hamilton, Red Hill Creek Bank Stabilization, Hamilton, Ontario
UEM was retained by the City of Hamilton to complete the detailed design of the preferred bank stabilization and erosion control options identified from an earlier Environmental Assessment. The system designed by UEM included a toe drain to control identified leachate seepage problems that also impacted bank stabilization. The UEM fluvial geomorphology team inspected the site and provided additional input on the design including use of native vegetation on the slopes above the retaining wall and pinned boulders at the toe of the retaining wall.
UEM designed and obtained approvals for a 13 m3 / day sub-surface vertical flow wetland that reduces unionized ammonia and total phosphorous loading from landfill surface water runoff. Since the Twelve Mile creek is a particularly sensitive waterway, stringent effluent objectives were set for design. The wetland is built so that gravity regulates flows, eliminating the need for pumps or blowers and allowing the wetland to operate without any fuel or electricity. As with all natural systems, the constructed wetland is self-adjusting so that it requires very little long-term operational maintenance. Finally, by using the sub-surface vertical flow wetland, adverse cold weather impacts on biological activity are minimized.
The project involved the design, of a parking lot addition for Brock University in St. Catharines. Part of the design included stormwater collection, detention and controlled release. The storm water detention pond for this parking lot in the south campus of Brock University is designed as a dry pond with the outflow controlled by a Hickenbottom drain to the predevelopment flow. The pond has an area of 3,500 square metres and retains a volume of 3,500 cubic metres. For quality control, a natural wetland has been created within the low flow meander and is planted with cattails and willows. The detention pond controls the runoff from three parking lots totaling 1,300 spaces.
UEM was retained by the City of Hamilton to complete the detailed design of the preferred bank stabilization and erosion control options identified from an earlier Environmental Assessment. The system designed by UEM included a toe drain to control identified leachate seepage problems that also impacted bank stabilization. The UEM fluvial geomorphology team inspected the site and provided additional input on the design including use of native vegetation on the slopes above the retaining wall and pinned boulders at the toe of the retaining wall.
