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ADVANCES IN GEOMEMBRANES: LEAK LOCATION LINER: GEOMEMBRANE BARRIER SYSTEMS WITH INCREASED INTEGRITY
Session: Barriers and Geosynthetics / Barrières et géosynthétiques
Boyd Ramsey, Chief Engineer (United States)
Vincent Diviacchi, Technical Manager - Canada (United States)
In recent years, several developments and advances have been made in geosynthetic barri-ers, particularly barriers in exacting difficult and high risk applications. These developments have ad-vanced the capabilities of geosynthetics and improved the performance of barrier systems. In particular, two applications have changed significantly. On December 19, 2014 the US EPA published the regula-tions that will be imposed on the storage of coal ash and coal combustion residuals in the United States. In the two years prior to that, a series of advances in leak detection methods and efficiency, leak location techniques and equipment and the materials that facilitate more accurate and rapid leak detection surveys have been fully commercialized and successfully applied to multiple installations around the world. This includes the ability to easily provide continuous monitoring for leakage through geosynthetic systems. This combination of regulations and technology has significantly improved the performance capabilities and potential for geosynthetic barriers. These technologies are reported, case history examples are pre-sented, and projections are made for current and future usage of these materials and techniques
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