•Reservoir Liners •For storing water in arid regions. 13.Stormwater Retention Ponds •Prevent runoff from contaminating local groundwater.

•Heap Leach Pads •Collect valuable minerals (e.g., gold, copper) by leaching solution through ore. 10.Tailings Storage Facilities •Contain slurry or waste from mining processes. 11.Secondary

•Pond Liners for Fish Farming •Maintain water levels and quality in aquaculture systems. 8.Manure Lagoons and Biogas Plants •Line pits to prevent seepage of manure

•Landfills (Waste Management) •Bottom liners: Prevent leachate from contaminating groundwater. •Caps (covers): Prevent rainwater infiltration and gas escape. 5.Wastewater Treatment Ponds •Line evaporation ponds and

1. Canal and Ditch Liners •Prevent water seepage in irrigation canals and drainage ditches. 2.Tunnels and Underground Structures •Waterproofing for tunnels and basements. 3.Roofing Systems