Coal Ash Rules and Engineering Webinar, November 15

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CETCO is supporting a free, November 15 webinar on US Federal Coal Ash Rules — Engineering and Design Considerations. The discussion will be led by Dr. John Daniels (Univ. of North Carolina – Charlotte), John Allen, P.E. (CETCO), and Bob Trauger, P.E. (consultant). Topics to be covered include: EPA CCR Rule Overview Ongoing rule litigation and State implementation plans Understanding the Rule’s de... »

PODCAST: Coal Combustion Residuals and GCLs

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Geosynthetica’s Director, Elizabeth Peggs, interviewed Dr. Craig Benson (University of Virginia) and engineer John Allen (CETCO) about coal combustion residuals (CCRs) and new barrier system regulations governing CCR handling and storage. Both Benson and Allen will be at the Coal Ash Management Forum on July 21 and 22 in Charlotte, North Carolina. Benson is a speaker at the event. In their discuss... »

GCLs Continue to Influence Barrier Designs

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The use of geosynthetic clay liners–GCLs–in engineered barrier systems has broadened substantially. Part of this growth has been fueled by a long record of successful performance. And, as with other geosynthetics, the growth has also been supported by numerous manufacturing and design advances. These have enabled GCLs to be far more application and site-specific today. GCLS & BENTO... »

REVIEW: Geosynthetics Middle East 2015

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The 7th edition of the international conference and exhibition Geosynthetics Middle East 2015 (GeoME 2015) once again turned the capital of the United Arab Emirates—Abu Dhabi—into an international meeting place for geotechnical and environmental experts. The event attracted more than 400 industry experts and 35 countries. The strong attendance, plus a sold out exhibition, underscored why the confe... »

Awards Enhance Geosynthetics Middle East Status

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The GeoME Awards were held at Geosynthetics Middle East 2015. While the event was the 7th in the annual series, it marked the first time for the GeoME Awards were presented. The addition was well-received. The final nominees and the winning projects represented a broad range of projects and materials. The two-day event was held 16 – 17 November 2015 in Abu Dhabi under the Patronage of Abu Dhabi Mu... »

August Webinars on GCLs in Coal Ash and Caustic Leachate Applications

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On August 4 and 5, CETCO will host webinars on “Understanding and Monitoring Polymer Amended Bentonite in Geosynthetic Clay Liners for Use in Coal Ash Impoundments and Caustic Leachate Applications.” Registration is open. VISIT THE REGISTRATION SITE TRI Environmental’s John M. Allen, P.E. and CETCO’s Scott P. Solotorovsky will lead the hour-long professional development session. The di... »

AMCOL Awarded Major GCL Supply Contract

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 HOFFMAN ESTATES, IL — (Marketwired) — AMCOL International Corporation (NYSE: ACO) announced today that it is furnishing more than 1.5 million square meters (16 million+ square feet) of its Resistex® geosynthetic clay liner (GCL) product to a new aluminum processing facility in Saudi Arabia. The $25.3 million contract includes supply of the GCL and all other components of the multi-lay... »

CETCO Offers Leachate Testing for Liner Selection

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By CETCO – Wastes are evolving. Has your liner system? Send us your waste or leachate samples, we’ll suggest the optimum geosynthetic clay liner (GCL) for your site. While sodium bentonite has served as an effective hydraulic barrier in many containment applications for many years, standard bentonite-based GCLs have their known limitations. CETCO now offers a line of enhanced chemical ... »

Improving the Stability of Heap Leach Pads

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By Allan J. Breitenbach, P.E., and Chris Athanassopoulos, P.E. – Geosynthetic composite liner systems, consisting of geosynthetic clay liners (GCLs) underlying geomembrane liners, are seeing increased use in heap leach pads due to faster construction time and improved liquid containment compared to compacted clay liners. The improved hydraulic performance provided by geomembrane/GCL composite lini... »

From the Archives: D35 Guide for Evaluating GCL Direct Shear

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One from the archives: ASTM Committee D35 on Geosynthetics’ March 2013 announcement of a direct shear-related revised test for geosynthetic clay liners (GCLs) has us recalling Geosynthetica’s May 2011 article on an at-the-time new direct shear guide. The March 2013 revised standard is ASTM D6243-13 – Standard Test Method for Determining the Internal and Interface Shear Resistance... »

CETCO Announces GCLS with New Engineered Clay Technologies

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CETCO Lining Technologies has announced the official release of three new product lines in its GCL portfolio. The names of the new product lines are InterLoK, Resistex and Continuum. Each product features a unique engineered clay technology designed by the research and development team at CETCO to enhance the permeability and/or chemical resistance. InterLoK, Resistex, and Continuum GCLs are now ... »

Carbon Footprint Comparison of GCLs and Compacted Clay Liners

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CETCO Lining Technologies has published a paper from Christos Athanassopoulos, P.E., CETCO, and Richard J. Vamos, Ph.D, P.E., DAI Environmental, Inc., on "Carbon Footprint Comparison of GCLs and Compacted Clay Liners." Geosynthetic clay liners can have a significant impact carbon footprint reduction in construction when measured against the thickness of compacted clay required to equal GCL perform... »