Project: Boundary Dam Spillway Rehabilitation
Location: Estevan, Saskatchewan
Description: Complete replacement of a 55 year old spillway chute, stilling basin and drainage system. Subcontracted by PCL Construction for the demolition of the old spillway chute and stilling basin, installation of new spillway drainage system and placement of backfill and 20,000 tonnes of rip rap for new structure. Challenges involved constrained working space as majority of excavations were completed approximately 16.0 meters below surrounding ground within existing structure footprint, slope and stability issues appeared after start of construction, and tight completion schedule.
Owner: Saskatchewan Power Corporation
Completion Date: 2008 to 2010
Prime Consultant: PCL Construction Management Inc.