Notice of project
| Affected location(s): | Lash Miller Chemical Laboratories (073) |
| Affected space(s):: | Loading Dock, Room 20, Corridor 33K |
| Service period: | Saturday, Dec. 13, 2025–Sunday, Dec. 14, 2025, 6 AM–4 PM |
What is being done?
Urbacon is installing a New Nitrogen (N2) Feed to the Lash Miller Building, which involves shutting down the Nitrogen Gas. This work is part of P073-20-026: Lash Miller Expansion.
Please refer to page 2 of Urbacon’s MOP #22R4.1 (URB MOP #22R4.1), which includes real-site photos highlighting the following elements:
- New Nitrogen (N₂) Line
- Existing N₂ Line
- Tie-In Point
- New N₂ Meter
- Existing N₂ Line to be reworked in the Loading Dock to avoid the HTHW tie-in
- Purge Point on new line between Tie in and New Meter.
- Purge Point on Existing Line between Tie in and existing meter.
Additionally, page 4 of Combined Air’s MOP (80 St. George – Nitrogen Shut Down MOP – Signed) identifies the Purge Point location using real-site photos. He has also marked the following:
- Location for the installation of the Pressure Gauge
- Main Nitrogen isolation valve, located outside within the cage
How will it impact building occupants?
- The space will be under the control of Urbacon and Combined Air for the duration of the work.
- Building access to the affected areas will be limited or restricted for safety. Occupants will have a path of travel in Corridor 33K and adjacent work areas.
- This work will produce fumes and odors from the Scheduled Hot Work that will take place.
- Every effort will be made to keep the noise and disruption to a minimum.
- Any asbestos work, electrical shutdown, and mechanical service alerts, if required, will be issued separately.
- Dust will be controlled, and floors will be HEPA vacuumed and wet mopped after the shift to prevent dust from travelling to nearby dust sensitive areas.
- MOP #22 R4.1 Notice Drawing
Who do I contact for more information?
If you have questions or concerns, please contact Jesse Bestia, construction technician, university planning, design & construction at jesse.bestia@utoronto.ca or 437-228-5437.
Issued by
Jesse Bestia
Construction Technician, University Planning, Design & Construction