The two most common applications for geosynthetics in power plants is for either dry ash landfills or for slurry ash ponds. For both of these applications, the most common material used is high density polyethylene.

Current regulations require that most liquid storage tanks be surrounded with secondary containment systems that will hold 110% of the stored material if the tanks were to rupture. The most common manner in which this is achieved is to form an earthen berm around the tanks. This area is then covered with a liner that is compatible with the stored liquid. The liner is attached to all structures using either stainless steel battening or an embedment strip. The lining material is buried in an anchor trench on top of the berm. 100 % of all seams are tested to ensure both the integrity and strength of the seam.