Geosynthetics & Landfills 101

June 1st, 2015

Erosion control challenges at solid waste facilities By Eric S. Steinhauser Introduction Landfills, particularly municipal solid waste (MSW) landfills, are often misunderstood. Commonly referred to as “dumps,” these highly engineered facilities, and the engineering project teams involved in their development, do not get the respect they deserve. Once the primary option for MSW disposal, the […]

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An approach to approaching zero leakage

June 1st, 2015

Panel Discussion: Geosynthetics 2015 Conference February 16, 2015 | Portland, Ore. Session moderator: Ian D. Peggs, I-Corp International Inc., USA Do liners leak? It is said that all liners leak, including geomembranes. They don’t. Double geomembrane liners do not leak into the subgrade. Or do they? What should probably be said is that all single […]

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Welding on the slope

June 1st, 2015

Geomembrane testing? Root penetration? Welding HDPE with LLDPE? Woven geopipe? Questions and answers from the GMA Techline I have a colleague who is insisting that we build a pond’s embankment extension by welding new geomembrane to an old one on the “slight” slope (really somewhere 1:4 ratio). I am arguing that we should do welding […]

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Suction component to resist uplift?

June 1st, 2015

Geomembrane testing? Root penetration? Welding HDPE with LLDPE? Woven geopipe? Questions and answers from the GMA Techline What about a reservoir geomembrane liner over a secondary hot-mix asphalt (HMA) liner with adequate anchorage below the crest (fill embankment) and at the bottom (minimum water depth)? The secondary HMA liner is intended to be “impermeable” and […]

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Vegetation establishment is crucial for mine reclamation

June 1st, 2015

By Jill Pack Project Highlights Mine closure and reclamation Chestnut Ridge Sand Quarry Kunkletown, Pa. Applications Erosion control Slope stabilization Contractor The H & K Group Distributor/Installer Jobsite Products Hydraulic erosion control HydraCM Steep Slope Matrix HydraCX Extreme Slope Matrix Quantities 3,414 bales of HydraCX (about 49 acres) 220 bales of HydraCM (about 3 acres) […]

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Spring Lobby Day 2015

June 1st, 2015

GMA News By Jonathan Curry The Geosynthetic Materials Association (GMA) hosted the first of its two 2015 Lobby Days, April 20–21, in Washington, D.C. It was an exciting opportunity for our members and industry leaders to continue to educate the 114th United States Congress on the important role that geosynthetics play in creating environmentally friendly, […]

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Geomembrane would surround buildings

June 1st, 2015

Business asks to test flood-protection shield on former Tuckerton police station By Pat Johnson Since Federal Emergency Management Agency (FEMA) money won’t go far enough to pay for demolition of the former police office on South Green Street that was damaged beyond repair by 2012’s Superstorm Sandy, the Tuckerton [N.J.] Borough Council entertained a presentation […]

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Liner root penetration

June 1st, 2015

Geomembrane testing? Root penetration? Welding HDPE with LLDPE? Woven geopipe? Questions and answers from the GMA Techline I have a liner/cap that consists of 2 feet of soil, a double-sided 6-ounce geotextile drainage composite, and a 40-mil textured LLDPE. I have a regulatory comment to address: “Will the cover-liner be susceptible to damage through root […]

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Extrusion welding HDPE liner with LLDPE

June 1st, 2015

Geomembrane testing? Root penetration? Welding HDPE with LLDPE? Woven geopipe? Questions and answers from the GMA Techline I have a project where the contractor is insisting that welding a 2mm single-side textured HDPE geomembrane to a concrete structure (HDPE polylock embedded) with LLDPE rods is not a compromise in the quality of the weld and […]

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Geotextile + polyurea pre-sprayed panels

June 1st, 2015

1-2 combo delivers waterproofing at Hawaii water impoundment structure By Del Williams Introduction For decades, polyurea coatings have been spray applied directly to properly prepared concrete, metal, and geotextile substrates on the jobsite using special equipment and trained applicators. However, recent polyurea products and process improvements are now speeding the installation process with even higher […]

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