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Part 2: The regulation of CCR in the United States: Geosynthetics and barriers
October 1st, 2017
As discussed in Part 1 of “The Regulation of CCR in the United States,” for the first time in decades, nationwide regulation of CCR (coal combustion residuals) surface impoundments expands the regulated use of geosynthetic materials. While the CCR Rule (2015) allows continued operation of existing CCR surface impoundments, it provides criteria for the disposition […]
AGRU offers webinar on protecting concrete infrastructure with AGRU Sure-Grip
August 17th, 2017
AGRU America will host a webinar on protecting concrete with AGRU Sure-Grip liners on Thursday, Aug. 24, 2017, at 12:00 p.m. EDT. Concrete is the most popular building material in the world, but even this ubiquitous material is susceptible to damage. Engineers have presented ingenious designs over the years to protect critical concrete structures with […]
Part 1: The regulation of CCR in the United States: Geosynthetics and barriers
August 1st, 2017
The regulation of coal ash (coal combustion residuals or CCR) has significantly expanded the market for geosynthetics within the United States. Further, there is interest in these regulations around the globe in every country using coal as an energy source. These regulations are the result of recent environmental incidents. The regulations call for the increased […]
GMA Techline
August 1st, 2017
Liner repair? Pullout tests? Sewn seams? Shear strength of sludges? Geomembrane liner repair Q: I have a facility that has submitted liner repair documentation for the repair of a high-density polyethylene (HDPE) liner for a leachate/stormwater pond at an industrial landfill site. The repairs were performed using either a patch or, for indentations and small […]
Using geosynthetics for macroencapsulation for CCR on-site clean closure
August 1st, 2017
Coal combustion residuals (CCR) have been used for many years in the construction of berms and engineered structural fill applications, including embankments for highways, dikes, and levees. However, large, unencapsulated structural fill projects have become a focus of environmental concerns due to potential leaching of metals and structural failures. Cap-in-place of CCR surface impoundments is […]
Achieving zero leaks on a budget with geomembranes
June 1st, 2017
For more than 30 years, the geomembrane industry has been told that “all geomembranes leak” (Giroud 1984), as if this were some foregone conclusion no matter what might happen from geomembrane manufacturing to the time it is put into service. But recently, the idea of “zero leaks” has been a hot topic at industry conferences, […]
Wiefferink, IEC expand geomembrane networks with partnership
July 26th, 2016
In a press release issued last week, Wiefferink B.V. (Oldenzaal, Netherlands) and Industrial & Environmental Concepts Inc. (Lakeville, Minn., USA) have expanded their geomembrane networks via a new partnership. “The unprecedented growth and expansion of both companies led to this collaboration and agreement,” according to the release. In terms of products and services, both companies […]
Avoiding geomembrane whales and hippos in surface impoundments
April 25th, 2016
The incidence of geomembrane whales/hippos in surface impoundments containing various types of liquids is, unfortunately, not uncommon. See, for example, GSI White Paper #30, which discusses corrective actions after they occur. This article, however, addresses the situation before it occurs. Clearly, the presence of a geomembrane creates anomalies in the underlying subgrade that can cause […]
Bio-digester supplies energy to 3,000 farms
January 11th, 2016
The principle of action of the digestive system of a cow served as a model to create a container that receives organic waste, mostly livestock manure, where it is mixed with millions of bacteria to obtain natural gas integrated mostly of methane, called biogas, as well as a high-quality bio-fertilizer. The biodigester, commercially called Biobolsa […]
Seaman introduces XR-5PW geomembrane
October 30th, 2015
High-performance fabric manufacturer Seaman Corp., Wooster, Ohio, has expanded its line of XR-5® grade geomembranes with the XR-5PW. Specifically engineered for potable water floating covers, 45-mil XR-5PW offers high strength, UV protection and resistance to punctures and tears. It is the only coated fabric with NSF-61 approval for potable water contact. Featuring Seaman’s proprietary knit […]