Tag: Geomembranes

A geomembrane is very low permeability synthetic membrane liner or barrier used with any geotechnical engineering related material so as to control fluid (or gas) migration in a human-made project, structure, or system. Geomembranes are made from relatively thin continuous polymeric sheets, but they can also be made from the impregnation of geotextiles with asphalt, elastomer or polymer sprays, or as multilayered bitumen geocomposites. Continuous polymer sheet geomembranes are, by far, the most common.

Geosynthetics for Roadway Construction

Geosynthetics for Roadway Construction

Ever since the Romans used palm fronds and other plant fiber matting to reinforce the sub-bases of their famous roads, fabrics have been used to improve road longevity and performance. Modern road construction methods rely on a family of materials called geosynthetics to achieve the same results. But these more sophisticated materials can

A Necessary Support System

A Necessary Support System

Ever since the Romans used palm fronds and other plant fiber matting to reinforce the sub-bases of their famous roads, fabrics have been used to improve road longevity and performance. Modern road construction methods rely on a family of materials called geosynthetics to achieve the same results. But these more sophisticated materials can

Water Tanks, Reservoirs, Maintenance, and Repair

Water Tanks, Reservoirs, Maintenance, and Repair

Editor’s note: This article first appeared in the January/February 2014 issue of Water Efficiency.

Rob Pearlman, senior containment systems engineer with Plymouth, NH-based AmTech Tank Lining & Tank Repair, says that water tank problems rarely boast good timing. You can actually count on the opposite, he notes.

One moment a water tank

Don’t Be a Nasty Neighbor

Don’t Be a Nasty Neighbor

“Not in my backyard” is a familiar phrase in the solid waste industry. People don’t want a landfill in their neighborhood, but it’s inevitable that these facilities are going to have some type of neighbors—whether residential, commercial, or industrial—so keeping those neighbors happy by reducing dust, odor, and noise is

Revisiting the Cover on Final Cover

In the quarter of a century since Subtitle D has been in effect, there have been many great advancements in technologies and materials, but these advancements have not really fundamentally changed our approach to solid waste disposal.

Revisiting the Cover on Final Cover

In the quarter of a century since Subtitle D has been in effect, there have been many great advancements in technologies and materials, but these advancements have not really fundamentally changed our approach to solid waste disposal.

Landfill Liners and Covers Put a Lock on Leachate

Landfill Liners and Covers Put a Lock on Leachate

There are two driving factors: the liner and the cover. How they are designed and installed, what materials are used, and how it is maintained play a significant role in achieving a high degree of assurance of environmental integrity throughout the period in which post-closure care is required.

Experts agree that

Installation and Testing of Landfill Liners

Installation and Testing of Landfill Liners

The material used for liners and caps is only as good as long as it’s installed properly, says Doug DeCesare, the solid waste section manager in HDR Engineering’s Nebraska/Iowa engineering department.

Installation is critical for the effectiveness of geomembranes in landfills in not enabling water to stream through tears or pinholes,

Controlling Erosion at Landfill Sites

Controlling Erosion at Landfill Sites

About Landfill Caps
EPA maintains strict guidelines with which municipal solid waste landfills must ­comply once a landfill has reached its maximum ­capacity, setting in motion its closure.

One of the requirements is that landfill ­owners must continue to monitor and maintain the landfill, typically for 30 years, to ensure that waste

Landfill Liners and Covers

Landfill Liners and Covers

There are two driving factors: the liner and the cover. How they are designed and installed, what materials are used, and how it is maintained play a significant role in achieving a high degree of assurance of environmental integrity throughout the period in which post-closure care is required.

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