The use of a Hydrotex flexible fabric formed concrete ballast on geomembrane (PVC, HDPE, LDPE, etc.) liners has been used succesfully by Synthetex on past projects. The ballast protects the liner from uplift due to wind or other loads. The thickness and/or lateral spacing of the fabric formed concrete ballast product can be varied to overcome the uplift loads. The ballasts are custom made to varying slope lengths, so the contractor simply unrolls the form down the slope and pumps concrete into the form from the top of the slope. The current project we are working on is a palladium, platinum, and other metals mine in Montana where wind loads are high. Additionally, loads and reduced interface friction from ice and snow on top of and between the liner and the ballast are a concern. Heating and cooling through temperature cycles causes geomembrane liners to swell and shrink. Therefore, a flexible ballast is required. Synthetex's engineers provided a system to resist wind uplift as well as ice and snow conditions, with the required flexibility.