99 Avenue Sanitary Trunk Rehabilitation Project- update

November 28, 2021

MacKenzie Ravine Trestle Rehabilitation Project

Nov 22; Good afternoon,

Attached is a construction notice for the MacKenzie Ravine Trestle Rehabilitation Project. It will be delivered to residents adjacent to the work area early this week. We would like to request your assistance with sharing this information on our behalf.

If you have any questions, please don’t hesitate to contact me.

Thank you, Dawn


99 Avenue Sanitary Trunk Rehabilitation Project

Nov 25; Good afternoon,

We have some exciting news! The tunnel boring machine (TBM) has reached the end of the first tunneling segment at 101 Avenue and Ravine Drive [Glenora] and has been extracted from the retrieval shaft. Please note, there are still some minor activities that need to be performed before the tunneling will be considered complete for this segment.

As communicated in May 2021, the tunneling from Worksite #1 and Worksite #2 was progressing slower than anticipated due to the rocky and stiff clay ground conditions. We continued to experience these challenging ground conditions for the entire segment, which may further impact the timelines for the overall project and individual worksites. EPCOR is currently going through a detailed review of the overall project schedule based on tunneling progress to date and the productivity we saw during this first tunneling segment. It is possible that the challenging ground conditions experienced may occur during the other tunneling segments.

A project update, along with any changes to the schedule, will be communicated with the community as soon as possible.

If you have any questions, please don’t hesitate to contact me.

Thank you, Dawn

EPCOR Drainage Services

Tel 780.509.8080