Geosynthetics OCTOBER/NOVEMBER 2021 Volume 39 Number 5 21 ON THE COVER The first installation of a hybrid geosynthetic clay liner (hGCL) in Australia at a leachate pond Features 13 Using bentonite-polymer composite GCLs to contain CCR leachates By Jiannan Chen, Sarah A. Gustitus, Yu Tan and Craig H. Benson 21 Hybrid GCLs for attenuation of PFAS in landfill leachates By Ryan Hackney and Daniel Gibbs 29 Energy industries using HDPE liners for flowback water evaporation/recycling ponds By Neil C. Nowak 13 29 www.GeosyntheticsMagazine.com 3http://www.GeosyntheticsMagazine.com