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CCR landfill final cover test pad—Part 2
October 1st, 2020
By Nina J. Balsamo, John Massey-Norton, John R. Klamut, Terry Queen,Charles F. Straley and Mark R. Lehner FIGURE 1 Test pass of loaded 45-ton (40.8-tonne) truck over 3 feet (0.9 m) of cover soil on bench An integrated drainage system (IDS) geomembrane, which provides both a low-permeability membrane and drainage space above the geomembrane, is […]
CCR landfill final cover test pad—Part 1
August 1st, 2020
By Nina J. Balsamo, John Massey-Norton, John R. Klamut, Terry Queen,Charles F. Straley and Mark R. Lehner An integrated drainage system (IDS) geomembrane, which provides both a low-permeability membrane and drainage space above the geomembrane, is being used in the final cover at a coal combustion residuals (CCR) landfill in West Virginia. Part 1 of […]
Geosynthetics plays a prominent role
August 1st, 2020
From the Panama Canal to coal ash containment in West Virginia to polyvinyl chloride (PVC) sheet piling in several U.S. states, geosynthetics solve problems. The versatility of the different types of geosynthetics makes them useful in many situations. In “Innovative Geosynthetics Solution Saves 106-Year-Old Panama Canal Structures,” geotextile bags solve an interesting underwater erosion control […]
EPA finalizes revisions to the coal ash closure regulations, increases public access to information
July 30th, 2020
On July 29, the U.S. Environmental Protection Agency (EPA) finalized several changes to the regulations for coal combustion residuals, known as CCR or coal ash, to implement the court’s vacatur of certain closure requirements as well as adding provisions that enhance the public’s access to information about the management of coal ash at electric utilities. […]
EPA proposes additional amendments to the regulations for coal combustion residuals
February 20th, 2020
The U.S. Environmental Protection Agency (EPA) announced further proposed revisions and flexibilities to the regulations for the management of coal combustion residuals (CCR), commonly known as coal ash, from electric utilities. “This proposal is the last in a set of four planned actions we are taking under the Trump Administration to stabilize coal ash regulations […]
FGI offers coal combustion residuals short course in North Carolina
October 7th, 2019
The Fabricated Geomembrane Institute (FGI) is offering a one-day short course on Coal Combustion Residuals (CCRs): Current Regulations and Solutions. The short course will take place on Nov. 6 at the Center City Building near the University of North Carolina Charlotte campus. Attendees will gain a broad knowledge of current and emerging CCR regulations, local experience managing […]
Geosynthetics are uniquely suited
October 1st, 2019
Geosynthetics are found in the strangest of places. But that just speaks to how versatile and useful they are for a wide variety of applications. Dewatering, energy-site closure, erosion control, reinforcement and stabilization are just a few applications that geosynthetics address in this issue. In addition, many of the geographic areas discussed here are sensitive […]
Lessons learned in alternative coal ash pond closure design and construction
October 1st, 2019
By Anna M. Saindon Coal ash pond closures often face unique challenges due to location, available borrow soils and construction constraints. These challenges can lead to alternative methods of closure to comply with Resource Conservation and Recovery Act (RCRA) Subtitle D and coal combustion residuals (CCR) regulations. This article summarizes the construction of the first […]
Geosynthetics are at the ready
August 1st, 2019
Geosynthetics play a varied and important role in infrastructure, from liners and covers for reservoirs to landfill covers. They can be found in highway construction and in coal ash impoundments. They are part of the basic framework of public and private construction, supporting modern expectations for transportation, sanitation and reliable energy. The American Society of […]
An innovative cover system to close an ash/sludge impoundment
August 1st, 2019
By Paul C. O’Malley, José L. Urrutia and Don DiGuilio The two projects (confidential client) are industrial sites consisting of coal ash and by-product sludge located in the southeastern United States. The projects included 70 and 67 acres (28 and 27 ha) in closure areas, and the waste source consisted of industrial sludge with a […]