Geosynthetics JUNE/JULY 2022 Volume 40 Number 3 13 ON THE COVER A covered pond with a PVC geomembrane (left) that complies with Fabricated Geomembrane Institute (FGI) specifications. A second pond (right) is already filled with lithium brine. Features 13 PVC geomembranes for South American lithium mining By Myriam Astrid Acevedo Soriano and Juan Manuel Cortés 21 21 Improving railway drainage with multi-linear geocomposites By Stephan Fourmont and Mathilde Riot 29 Aboveground storage tank liners for energy applications By Ron MacKenzie 29 GeosyntheticsMagazine.com 3http://www.GeosyntheticsMagazine.com