Rehabilitation of approximately 375 metres of the storm sewer located in MacKinnon Ravine is underway. The rehabilitation work includes trenchless methods to reduce impacts on the natural environment and the construction footprint. However, excavations are required in some areas. EPCOR continues to be committed to minimizing excavations when possible.
The work will be done at three different locations.
Work Area #1 (blue line on map)
This work is currently underway. A pit has been excavated in the ravine just east of 149 Street and north of Summit Drive. From this pit, a new pipe will be inserted inside the deteriorated pipe and grouted in place. The total length of this repair is approximately 110 metres. This work is anticipated to begin in late June and expected to be completed in October 2020.
Work Area #2 (orange line on map)
This work has been completed. Rehabilitation of approximately 157 metres of existing pipe under the ravine, east of 149 Street, was completed in July 2020.
Work Area #3 (yellow line on map)
A pit will be excavated at the paved trail in the ravine, north of Summit Drive and approximately 200 metres east of 149 Street. From this pit, a new pipe will be inserted inside the deteriorated pipe and grouted in place. Depending on the exact amount of deformation and damage in the existing pipe, additional excavations may be required to allow insertion of the new pipe inside the deteriorated pipe. Preparation for this work is anticipated to start October 9, pending completion of construction in Work Area #1. The paved trail will be closed starting the week of October 13, with construction for Work Area #3 expected to be completed by the end of 2020.