Hidden Valley Golf Resort Clean-up and Site Reclamation

Hidden Valley was home to a golf course and 300 housing sites. The houses sat on land leased from the Siksika Nation, east of Calgary, but the community was condemned following the 2013 Bow River flood. In addition to the demolition and abatement of 610 structures, the project scope involved significant flood debris cleanup and restoration throughout the 240 acres project site.

The demolition required removal of 42,720 tonnes of demolition debris, 458 appliances, 33 tonnes of household hazardous waste, 727 PCB ballasts, and 2,948 tonnes of concrete.

Environmental Impact:

The floodwater deposited up to two feet of silt across the property. Visco deployed specialized material processing and screening equipment from its fleet, so all the demolition was fed through a horizontal grinder then directly into a vibration screener. The screener produced three material streams that consisted of wood chips, oversize debris, and silt. The wood chips and silt were used as alternate cover at the nearest landfill, which diverted 33,588 tonnes of material and reduced the need to use soil products to cover garbage in the landfill. The remaining demolition debris was downsized to consume less volume in the landfill.

Working through two summer seasons, Visco’s crews adapted to work restrictions to protect nesting birds and bat roosts.