Hike in from the power station and start making your way up towards the obvious canyon. Depending on how much snow there is, you may need snow shoes or even skis. If the snow is light then you will see an obvious boulder field. Cross this and keep heading up until you see some ice formations on your left. The first formation you will come to is the Bard Harrington Wall. Unfortunately this doesn't form up anymore due to the city patching it's supply above on the mountain.
Approach via the trail from the power station. It will be the second formation on your left.
Browse More Classics in Chouinards
Mountain Project's determination of some of the classic, most popular, highest rated routes for Chouinards:
Chouinards' Right WI3 Ice, 1 pitch, 100 feet
Main Line WI3-4 Ice, 2 pitches
Featured Route For Chouinards