Mine Process Upset & Storm Water Ponds—Three-layer Geosynthetic System

Bethune, Saskatchewan

Who: K+S Potash Canada

What: K +S was building the first greenfield potash mine in Saskatchewan in more than 40 years.  The project involved the construction of two ponds vital to K + S’s mining system. Titan was hired by Pro Canada West to satisfy all geosynthetic needs for both primary and secondary containment of the ponds. The first was a Process Upset Pond for surplus from solutions used in the mining process, and the second a Storm Water Pond to collect rainstorm water. The ponds were designed with a three-layer geosynthetic system including Bi-Planar geocomposite, 60mil HDPE geomembrane, and 4.00mm Bituminous Geomembrane (BGM).

Each contains a layer of bi-planar geocomposite, which consists of a geonet heat bonded with a non-woven needle-punched geotextile designed to provide drainage filtration keeping silt and soil particles from clogging the flow and increase friction of characteristics. This is followed by a layer of 60mil HDPE geomembrane providing secondary containment for the Process Upset Pond and primary containment for the Storm Water Pond. The Process Upset Pond also includes a layer of 4.00mm BGM for primary containment.

Why Titan:  Titan was able to provide full support and services required by the contractor and engineers involved in the project,  including qualified materials with installation and testing according to the required specifications.