In construction, preventing the penetration of liquids and gases is essential to maintaining the integrity of a structure. Often, containment is just as important especially when dealing with chemical contaminants or other waste. When looking to stop the spread of contaminated liquids and gases, there are few tools as effective as geosynthetic clay liners (GCL). Read on to learn how to design barriers to liquids and gases using three types of GCL: single liners, composite liners, and composite covers.
Comparing various geomembranes for your next geosynthetic application? Don’t overlook high-density polyethylene (HDPE) geomembrane. HDPE has been in use for decades and during that time a number of studies have been conducted to test its longevity and ability to meet environmental sustainability project requirements. Here, we explore some of those studies to examine the benefits of HDPE compared with other geomembranes types such as polyvinyl chloride (PVC). (more…)
Water is one of the most destructive forces on the planet, eroding everything from continents to human-made wonders. Water is also a vector by which contaminants spread from landfills and other waste reservoirs. Therefore, creating effective water seals has been a top concern in construction. (more…)
Slope stability analysis is vital to preventing slope failures in a variety of engineering applications including landfill design, roads, dams and embankments, to name a few. Proper analysis anticipates both natural and manmade slopes and failure of foundations and retaining walls. This blog covers the necessity of slope stability analysis, how to conduct the analysis and the role of geosynthetics in slope stability.
The Geosynthetic Materials Association anticipates higher demand for geosynthetics on the heels of the Fixing America’s Surface Transportation Act, or FAST act, and the recent addition of the Build America Bureau. The new group was created to support the $305 billion FAST Act, which provides long-term funding for U.S. infrastructure planning and development. The FAST Act also set new benchmarks for America’s infrastructure.
GEORGETOWN, SOUTH CAROLINA – October 27, 2016. Agru America’s geosynthetic products have been meeting or exceeding regulatory requirements for more than 20 years. And those two decades, marked by consistent delivery of quality geosynthetics, have made us the world’s leading manufacturer of flat die extrusion geomembranes, geonets, geocomposites and geotextiles.
Preparing for the closure and long-term care of a municipal solid waste landfill (MSWLF) can be an inordinate undertaking. Whether public or private, all landfills eventually reach the end of their active lifecycle. Before closure, a landfill must meet a series of criteria as determined by Subtitle D of the Resource Conservation and Recovery Act (RCRA). Following closure, those same regulations also require a minimum 30-year care period of monitoring and maintaining the landfill after it no longer generates income, thus requiring a postclosure fund – typically a pledge of revenue from public agencies or a trust fund from private site owners.
New federal regulations on the disposal of coal combustion residuals represent new approaches in response to events where coal ash has been inadvertently released from impoundments, the blowing of contaminants into the air and the leakage of potential contaminants into groundwater.
The Environmental Protection Agency recently issued proposals designed to reduce greenhouse gas emissions that would require more than 100 municipal solid waste landfills to install systems to collect and control landfill gas. While the EPA seems confident in the positive environmental benefits of the new standards, it has comparatively little to say about the economic impacts on landfill operators.