A slideshow of whales in geomembrane lining systems. When gas gets under a geomembrane, bubbles–or, “whales”–can form. A number of reasons may be responsible, such as installation damage, poor seaming, or a lack of appropriate construction quality assurance (CQA) measures like liner integrity surveys.
Whales can impact wastewater facilities, manure lagoons, effluent ponds, and other lined installations.
The occurrence of whales in a lining system is rare. BUT: They can be extremely expensive to correct. Proper design, installation, and CQA should always be used.
RESOURCES FOR “WHALE” PREVENTION
- Article: “A Primer for HDPE Geomembrane Liners in Wastewater Lagoons – Avoiding Whales” by Ian D. Peggs
- GSI White Paper #15: “Survey of U.S. State Regulations on Allowable Leakage Rates in Liquid Impoundments and Wastewater Ponds“
- Webinar: “Whales and Their Prevention in Geomembrane Lining Systems” (Geo-U.com)