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Drama in D.C.?
October 1st, 2015
One of my favorite trips every year is the Geosynthetic Materials Association (GMA) Fall Lobby Day. It is usually a good time to be in Washington … not too hot, not too cold, slight chance of rain. It is also the political season for dramatic action—or in recent sessions of Congress—inaction and shutdown talk. The […]
Effluent pond liners
October 1st, 2015
Flammability? Zip ties? MARV? Ponds? GT specs? Questions and answers from the GMA Techline. I’m designing an effluent pond (the geotechnical aspect at least) and have a couple of questions: Do you see any issues with placing a gravel (rounded) subdrain system underneath the pond, sandwiched between a geomembrane (likely textured HDPE) and a geotextile […]
Using geosynthetic materials to effectively close a coal ash pond
October 1st, 2015
Introduction Many electric utilities are required by the U.S. Environmetal Protection Agency’s (EPA) recently published Disposal of Coal Combustion Residuals from Electric Utilities Rule to evaluate and address closure options for historical coal ash storage areas. EPA Administrator Gina McCarthy signed the final rule Dec. 19, 2014, and it was published in the Federal Register […]
GCL woven side against geomembrane
October 1st, 2015
Flammability? Zip ties? MARV? Ponds? GT Specs? Questions and answers from the GMA Techline. I seem to recall a webinar or presentation in which the presenter warned against using the woven side of a GCL against a geomembrane due to bentonite squeeze-out and subsequent slippage. Instead, the nonwoven side was recommended against the geomembrane with […]
Part 2: Durability of geosynthetics
October 1st, 2015
Part 2 Durability of geosynthetics: The basics Author’s note This article is based on a training presentation delivered on Sept. 24, 2014, at the 10th International Conference on Geosynthetics in Berlin, Germany. That talk was itself based on courses given at ERA Technology, Leatherhead, U.K., with Alan Friday, and later at SKZ in Würzburg, Germany, […]
HDPE flammability
October 1st, 2015
Flammability? Zip yies? MARV? Ponds? GT specs? Questions and answers from the GMA Techline. I am involved with a landfill permit renewal. A question keeps coming up concerning the flammability potential of HDPE liner. What is that potential and do you know of any liner system fires? Eric | USA Eric, HDPE melts between 110 […]
GSE announces closing of Chile manufacturing facility
September 29th, 2015
Houston-based GSE Environmental announced in a Sept. 29 press release that it is closing its manufacturing plant in Antofagasta, Chile. The release said that “GSE has conducted a thorough evaluation of different means to optimize manufacturing productivity, market competitiveness, and quality, and has determined that it can more efficiently serve the South America region by […]
Don’t be left out of the 2016 Geosynthetics Specifier’s Guide
September 18th, 2015
Email prompts were sent out this week, reminding geosynthetics industry companies to submit directory and product data chart information for the annual Specifier’s Guide by Geosynthetics magazine. Company directories include contact information and listings of geosynthetic products, applications, and services. Updated product data charts are included for: geotextiles, geomembranes, geogrids, geosynthetic clay liners (GCLs), drainage […]
Registration now open for Environmental Connection
September 15th, 2015
Registration is now open for the International Erosion Control Association’s (IECA) annual Environmental Connection trade show and conference Feb. 16–19, 2016, at the Henry B. Gonzalez Convention Center in San Antonio, Texas. EC-’16, with the promise “Everything's bigger in Texas,” is anticipating more than 1,500 attendees, 160 exhibitor booths, with 30+ countries represented. EC-’16 will […]
Shaw increases investment in Watershed Geosynthetics
September 14th, 2015
Shaw Industries Group Inc., a Dalton, Ga.-based carpet manufacturer and supplier of floorcoverings and synthetic turf, has increased its investment in Watershed Geosynthetics LLC of Alpharetta, Ga., according to a Sept. 10 press release from Watershed. The release said that the additional investment will be used to build a sales and marketing team capable of […]