What subsurface utility engineering services were provided for the Basement Flooding Program?

The project included comprehensive Subsurface Utility Engineering services such as utility designation, Ground Penetrating Radar, LiDAR chamber scans, test holes, and CCTV sewer investigations, all completed in accordance with the ASCE 38 Standard.

How do these services help with wastewater system design?

They provide critical utility infrastructure information needed for design, while reducing risk by locating and designating existing underground utilities and other anomalies before construction and detailed design.

How are the project deliverables provided?

Deliverables are provided in MicroStation format so the data can be easily integrated into the City’s documents and design packages.

Toronto Basement Flooding Protection Program

Colour-coded map of Toronto and surrounding areas with numbered district boundaries over a street and shoreline background.

8 September 2026

Since 2012, Kiwa T2 delivered ASCE 38-compliant SUE services to support wastewater design and reduce underground utility risk.

Client: Jacobs / WSP Canada / Parsons / Hatch / CIMA+ / TMIG
Project owner: City of Toronto

Each year since 2012, our professionals have completed more than 60km of subsurface utility investigations across residential and high traffic arterials roads. Our teams provide the utility infrastructure information critical for the design of the new wastewater system with reduced risk by locating and designating the existing underground utilities and other anomalies.

Over the course of the project, Kiwa T2 has provided comprehensive Subsurface Utility Engineering including designating, Ground Penetrating Radar, LiDAR chamber scans, test holes, and CCTV sewer investigations, all completed in accordance with the ASCE 38 Standard. Deliverables are provided in the MicroStation format, allowing the data to be easily integrated into the City’s documents.

The Basement Flooding Program has been conducted in phases. First are the preliminary design phases. Phase 4 is now being complete, with Kiwa T2 providing comprehensive SUE services for each of these phases. Following preliminary design, the City tenders each Phase for detailed design plans. The Kiwa T2 team has provided additional SUE services for these phases as well. Preliminary design phase 5 is anticipated to be released in 2022 identifying additional areas across the Greater Toronto Area that require drainage improvements.