Geosynthetic Reinforcement in CCR Surface Impoundment Closures

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By John D. Herrmann, Bruce A. Lacina, P.E., and Stephan M. Gale, P.E. – In-place closure of coal combustion residual surface impoundments presents numerous challenges. Common methods of capping include placing 0.46 m (1.5 ft) of a compacted clay soil cap with an additional 0.15 m (0.5 ft) of vegetated cover. Geomembranes and geosynthetic clay liners are often considered as viable, cost-effective o... »

New Coal Ash Pond Capping Series from TenCate

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One of the fastest-growing markets for civil engineering in the United States is in capping coal combustion residuals. Tencate, one of the world’s biggest manufacturers of geosynthetics, has been well involved in the sector and now has added the Mirafi® CR-Series Pond Capping Geosynthetic Solutions to its engineered offerings. The CR-Series features high-performance geosynthetics for the stabiliza... »

Video: ILT Coal Ash Containment Installation at Reid Gardner

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International Lining Technology began work on a coal ash containment project at the Reid Gardner Generating Station in late November 2016. The 557-MW plant sits on 480 acres near Moapa, Nevada and has been undergoing closure activities in recent years. Three of the sites four units (totally 300 MW of capacity) have service records extending back in the 1960s and 1970s. The site operators began dec... »

CCR-Oriented GSE CoalDrain Geocomposite Earns Patent

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The expansion of coal combustion residuals handling and storage work in the United States, in the wake of new regulations, has led to a strong growth in engineered materials and services developed for CCR work. GSE Environmental developed the GSE CoalDrain, a highly engineered geocomposite designed specifically for coal combustion residuals. The US Patent Office has awarded the company its officia... »

Technical Note: CCR Closure and Geocomposite Drainage

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By GSE Environmental – This technical note focuses on CCR closure and post-closure care for facilities closing with the coal combustion residual waste remaining in place. In the United States, the Resource Conservation and Recovery Act (RCRA) placed the authority and the responsibility on the US Environmental Protection Agency (EPA) to establish rules and regulations for solid waste disposal... »

Register for FGI Short Course on Containment and Welding

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The Fabricated Geomembrane Institute is presenting a one-day course on “Current Advances & Trends in Containment & Welding Technologies.” The February 21 FGI short course will be held at TRI Environmental’s headquarters in Austin, Texas. Expert speakers from geosynthetics manufacturers, fabricators, installers, research and academia, and government agencies will be on han... »

Top Stories in Geosynthetics for 2016

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As promised, we reveal here today (December 29) the top stories in geosynthetics for 2016 on Geosynthetica. The stories have been ranked by most read, with the further caveat that the story must have been published in 2016. (There are a few exceptions noted at the end of older stories that actually cracked the top 15 for this year despite they having been published in previous year’s on the ... »

What Will Be Geosynthetica’s Most-Read Articles for 2016?

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As the year comes to a close, we take a closer look at the analytics to see how users have interacted with the site and to gauge our most-read articles. Readers do not interact with all content, of course. As expected, they focus on their particular areas of engineering interest. That might be a sector of engineering (e.g., transportation, coastal protection), a type of information (e.g, an abstra... »

Bridge Approach Embankment with MSE Walls and Pulverized Fuel Ash

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By Chaido (Yuli) Doulala-Rigby and Martin Black – For a new major road construction (the Tinsley Link) in the North of England, a bridge approach embankment needed to be designed and constructed. A 500m-long mechanically stabilized earth (MSE) wall on piled foundations was proposed, one that would utilize geogrid reinforcement and enable the beneficial use of pulverized fuel ash (PFA). The P... »

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... »

Three Companies’ Geosynthetics Combined for CCR Capping Systems

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Geosynthetics are playing an enormous role in updating how coal combustion residuals (CCRs) are managed and stored, both in the near term and for long-term environmental security. INOVA Geosynthetics is now bringing together the engineering insight of three major North American geosynthetics companies to promote CCR capping systems. The Coal Ash Performance Products (CAPP) approach from Pennsylvan... »

Geosynthetics for Waste Ash Landfill Closure – Two Projects

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For a landfill closure project in Massachusetts, Covanta Energy put an end to constant slope repair with a stable, cost-effective, geosynthetic closure technology. By Agru America and Watershed Geo – With more than 60 acres of closed landfill space to manage, Steve Melloni, Covanta Energy’s Regional Landfill Manager, has a lot on his plate. Most of his closed waste-to-energy ash landfills are trad... »

GSE to Expand Geonet and Geocomposite Manufacturing Capacity

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The Kingstree, South Carolina manufacturing facility of GSE Environmental is about to get even busier. The company announced on August 22 that it is adding a new geonent and geocomposite manufacturing line to the site. The move, which will support production of GSE’s full suite of biplanar and triplanar products, is in response to surging market demand for engineered drainage solutions. The South ... »

Polymer-Enhanced GCL for Wet Process Ash Impoundment

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By GSE Environmental – An innovative geosynthetic clay liner (GCL) was used for the containment of wet process ash at a 3,520 MW facility in the Southeastern United States. The wet process ash project involved roughly 1,000,000 ft.2 of GSE Bentoliner CAR (Coal Ash Resistant) GCL. The facility owner wanted an impoundment design that would conform to any potential rulings from the US Environmental P... »

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... »

Additional Details on Coal Ash Management Forum

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During the past week, Geosynthetica has interviewed waste management operators, utilities, design engineering firms, geosynthetics manufacturers, and fabricators and installers about coal combustion residuals (CCRs). The interviews are part of a series of stories we will publish on the sector and participants in the Coal Ash Management Forum, which takes place July 21 and 22 in Charlotte, North Ca... »

Coal Ash Management Forum Program

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The Environmental Research & Education Foundation (EREF) and the National Waste & Recycling Association (NWRA) are holding the Coal Ash Management Forum July 21 and 22 in Charlotte, North Carolina. The event features a 1.5-day technical program that will take participants through a comprehensive range of topics: Perspectives on CCR Management Current Research on Coal Combustion Residuals G... »

INTERVIEW: Sven Schröer on Growth in Geosynthetics

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By Chris Kelsey – This is Part 2 of 2 of a profile. Part 1, based on an interview with HUESKER North America’s first president, Tom Collins, looks at the founding of the North and Central American operations. Part 2 is an interview with current HUESKER North and Central America CEO Sven Schröer. The discussion focuses on the current wave of growth with the company, which is celebrating its 25th an... »

Tom Collins Reflects on HUESKER’s First 25 Years

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By Chris Kelsey – This is Part 1 of 2 of a profile. Part 1, based on an interview with HUESKER North America’s first president, Tom Collins, looks at the founding of the North and Central American operations. Part 2, an interview with current CEO Sven Schröer, focuses on the current wave of growth with the company, which is celebrating its 25th anniversary. This two-part story is also part o... »

Raven Industries Expands Manufacturing Capabilities

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Raven Industries Engineered Films Division (NASDAQ:RAVN) has made its mark with polymeric films and sheets, including well-known geomembrane lines. The company has steadily invested in material development and increased its manufacturing capabilities. Recently, it announced the installation of a 7-layer cast extrusion lamination line. The new line is housed in Sioux Falls, South Dakota, where the ... »

HUESKER Celebrates 25 Years in the Americas

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The geosynthetics field really took off in the 1990s, and one company that was part of that swift growth was HUESKER, Inc. The Charlotte, North Carolina-based company now celebrates 25 years of manufacturing and engineering in North and Central America. The company’s main markets have been in geosynthetics and agricultural and industrial textiles. The company recently moved into a new headquarters... »

New Headquarters for HUESKER North and Central America

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On March 11, HUESKER will move its North American and Central American operations into a brand new headquarters in Charlotte, North Carolina. The new physical address will be: 3701 Arco Corporate Drive, Suite 525 Charlotte, NC  28273 The mailing address will remain the same: P.O. Box 411529 Charlotte, NC  28241 The move is part of a steady expansion of the company in the Americas, growth which com... »

HUESKER Announces an Additional Coal Ash Webinar

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HUESKER launched a series of “mini-webinars” this year, succinct (<30 min) engineering discussions on various geosynthetic applications and materials. January’s coal ash webinar was so well-attended that the company has announced an additional date for the live session: March 2 at 2:00 pm EST.   REGISTER ONLINE DOWNLOAD COAL ASH FLYER (PDF) These sessions are free to atte... »

A Re-Energized Propex GeoSolutions Hits the Road

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After forming two new sales groups—Geotextile Sales and Erosion Control & Specialty Solutions—Propex GeoSolutions continues to reinvigorate its business. The company has announced a more ambitious face-to-face presence at industry shows. This includes three stops in February: American Coal Ash Association (ACAA) Winter Meeting – Tampa, Florida, February 2 – 4 Golf Industry Show (GIS) – San Die... »

Four HUESKER Webinars Announced

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The HUESKER webinars have established a good following. The company has announced three more for February and one for March. These concise, free, engineering sessions, all of which are less than 30 minutes, will address pavement interlayers, geotextile-encased columns, mining reinforcement and safety, and coal ash engineering with geosynthetics. The coal ash session (March 2) is a repeat of a high... »