Contact: | 416-661-6600 x 5293

Track 2 Day 1: van Driel Stewart


Tremaine Road Extension from Steeles Avenue to No. 3 Side Road, Milton, Ontario: Managing Complex Environmental Challenges Through Careful Planning and Monitoring

Wednesday March 20, 2019
9:30 to 10:00 am


Peter van Driel and Derek Stewart, WSP Canada Group Ltd.


To accommodate increasing population growth in the Town of Milton, Ontario, the Regional Municipality of Halton is planning and constructing an improved transportation corridor for Tremaine Road, with a new interchange at Highway 401. This presentation showcases environmental management strategies used during construction of a portion of this corridor, between Steeles Avenue and No. 3 Side Road, involving a new alignment for Tremaine Road, with a grade separation at the Canadian Pacific Railway, built through the site of a historic shale mining and brick works operation.

This project required careful planning to address the environmental sensitivity of the surrounding landscape, including wetlands, woodlands, a new bridge over Sixteen Mile Creek, which is a coldwater fishery, plus three smaller tributaries, near and below the Niagara Escarpment. This area includes lands regulated by the Niagara Escarpment Commission, and in this same area, excavation of the CPR grade separation has generated approximately 150,000 cubic metres of excess soil, shale, and bricks, of which a significant portion is contaminated with heavy metals and polycyclic aromatic hydrocarbons.


Learning Objectives

1. Erosion and sediment control in an environmentally sensitive area.

2. In-water works and creek channel design.

3. Development of an excess soil management plan in a Brownfield site.


Peter Van Driel

Peter van Driel

Peter van Driel has fourteen years of hydrogeological consulting experience and ten years’ experience in sediment and erosion control inspections. He has worked on projects related to roads, infrastructure, and new developments, landfill sites, quarries, and industrial facilities.

His areas of practice include environmental impact assessments, environmental compliance monitoring, construction dewatering assessments, approvals, and monitoring, soil and groundwater remediation, private water well surveys and monitoring, development and monitoring of erosion and sediment control plans.

Derek Stewart

Derek Stewart has more than 27 years’ experience as a Contaminant Specialist/Senior Project Manager managing contaminant and groundwater investigations in support of transportation infrastructure and land redevelopment projects. He provides technical support for regional planning and local scale impact assessment studies supporting municipal, provincial and federal Environmental Assessments (EAs), transportation infrastructure preliminary and detail designs; land redevelopment; and property acquisitions/dispositions.