This paper will describe developments and trends that have been observed since the 10 ICG in Berlin where the same authors presented a paper titled “Material Selection For Reservoir Floating Covers”. The paper is based on work carried out for several recent projects where facility owners are discovering a need to look at new trends and developments in both the geomembrane liner systems used for these facilities and the geomembrane materials being used for floating covers. Along with these material selection trends there have been design trends partly driven by the material choices and partly driven by operation, access and safety issues. Free access for personnel performing maintenance on these covers has been more restricted in recent years resulting in walkway and stormwater management trends that involve interesting compromises in design and reconstruction.
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