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GSI offers webinar on pond liners

News | January 16, 2018 | By:

The Geosynthetic Institute (GSI) will offer a webinar entitled “Pond Liner Design and Performance,” on Jan. 24, 2018, from 11:30 a.m. to 1 p.m. EDT.

The first ponds were lined with geomembranes in the 1930s, and the application has grown enormously to the present. For example, of the many kinds of contained liquids, hazardous types alone represent 206,000 ponds in the United States, as estimated by the U.S. Environmental Protection Agency. Other contained liquids include potable water, architectural ponds, industrial water, sewage sludge, dredged sediments, agriculture wastes, slurried coal combustion residuals and more. This webinar focuses on design of such facilities, which are fully illustrated, and their performance, which is shown to be dicey.

The webinar proceeds in discrete design stages whereby the output of one stage feeds directly into the next. An overview is first presented followed by eight discrete design stages. These design stages contain both numeric examples and past failures so as to focus upon specific aspects of the entire process. Indeed, proper pond liner design leads directly to fully acceptable results provided that proper construction quality control and assurance are subsequently implemented.

Participants will understand that pond liner design is not a simplistic process of selecting a geomembrane, getting a warranty, and subsequently installing cavalierly. Conversely, it is a prescribed methodology that will be fully explained and illustrated. Many of the design aspects use geotechnical, hydraulic and polymer knowledge, which are illustrated by numeric examples. The ultimate objective is a safe and secure system that properly functions for the intended lifetime.

This webinar will be useful for public and private owners of the following types of liquid impoundment facilities: potable water, architectural ponds, shutdown water, industrial waters, process wastewaters, sewage sludge, industrial sludge, agricultural wastes, slurried CCRs, and hazardous liquids. In addition, regulators and agency personnel, consultants and designers, soil and geosynthetic testing organizations, contractors and installers, academic and research groups, and laypeople who want technical information on this important topic will find the webinar helpful.

The webinar will be taught by Dr. Robert M. Koerner, professor emeritus of civil engineering at Drexel University and director emeritus of the Geosynthetic Institute.

Webinars cost $200.00 for GSI members and $250.00 for nonmembers. Successful completion of a multiple-choice test after the webinar carries 1.5 professional development units.

For more information or to register, visit

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