UPDATE – 99 Avenue Sanitary Trunk Rehabilitation Project – Worksite #3 – 148 Street and 99 Avenue

July 18, 2021

Just an update for you on the 99 Avenue Sanitary Trunk Rehabilitation Project. Construction to build a large pit (also known as a shaft) at Worksite #3, located at 148 Street and 99 Avenue, is expected to resume the week of July 19, 2021.

The typical hours of construction at Worksite #3 will be from 7:00am to 9:00pm, Monday to Saturday. If required, these hours may be extended, and construction may occur on Sundays from 9:00am to 7:00pm.

For Worksite #3, residents can expect general noise as construction equipment and trucks will be used for excavation, material delivery and soil removal. The drill rig, which was used earlier at this location, will not be part of the upcoming work. We are not expecting significant vibration from the upcoming construction; however, slight vibration may be experienced during certain activities similar to a garbage truck driving by.

EPCOR will do everything possible to manage noise associated with the construction. We will work to ensure that the construction is completed within the requirements of the City of Edmonton Noise Bylaw.

Once the tunneling between Worksite #1 (148 Street and Summit Drive) and Worksite #2 (101 Avenue and Ravine Drive) has been completed, the tunnel boring machine (TBM) will be removed from Worksite #2 and moved to Worksite #1 to begin tunneling south towards Worksite #3.

The TBM used to tunnel underground operates under a pressure system to move forward. When stopped, the machine requires force to push it forward when tunneling resumes. This could result in a situation where the TBM gets stuck and is unable to move forward. As mentioned in our previous project notices, 24/7 tunneling work will be required to reduce this risk. Advance notice will be provided before the 24/7 tunneling work at Worksite #3 begins.

Construction at Worksite #3 is anticipated to be completed by the end of 2022. Please note, timelines are estimates and may change based on weather and construction conditions.

A letter advising of the upcoming construction has been delivered to residents adjacent to Worksite #3. 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

EPCOR Drainage Services  Tel 780.509.8080