Proven Technology for Liquid and Waste Containment

From the world's leading supplier of GCLs

CETCO is the world’s leading supplier of Geosynthetic Clay Liners (GCLs) and has a full range of products to address design challenges such as hydrostatic pressure, shear strength, and chemical compatibility. CETCO engineered solutions can provide a product that will provide performance and value for containment applications.

Frequently Asked Questions (FAQs)

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    Overview

    Features & Benefits of CETCO GCLs

    • Industry leading internal shear strength without reliance on supplemental processing provides high safety factor on steep slope designs
    • SUPERGROOVETM technology allows bentonite to migrate out and create a self-seaming overlap reduces costs for bagged bentonite and associated labor
    • Lamination capabilities to provide composite geomembrane-GCL products
    • Granular bentonite for consistent hydraulic performance with no dust problems

    Alternative to Compacted Clay

    Geosynthetic Clay Liners (GCLs) are frequently used in environmental containment applications as an alternative to traditional compacted clay liners. GCLs consist of layers of geosynthetics surrounding a layer of low-permeability sodium bentonite. The materials are needlepunched together into a lining material capable of resistance to high shear forces.

     

    Advantages over Compacted Clay Liner Systems

    • Self-Healing and Self-Sealing
    • Better Hydraulic Performance
    • More Resistant to Varying Weather Conditions
    • Faster and Easier to Install

    Chemically resistant GCLs

    Through extensive knowledge of clay-polymer interactions, CETCO has engineered GCL technologies capable of withstanding aggressive leachates. RESISTEXTM formulas utilize a blend of high performance bentonite, with polymers that enhance the properties in extreme conditions.

    Featured Products

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    RESISTEX® Geosynthetic Clay Liner
    RESISTEX is a polymer-modified bentonite GCL that is engineered to provide the highest level of chemical compatibility for hydraulic barrier performance in extremely aggressive leachate environments.
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    BENTOMAT® DN Geosynthetic Clay Liner
    BENTOMAT DN is a reinforced GCL consisting of a layer of sodium bentonite between two non-woven geotextiles, which are needle-punched together.
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    BENTOMAT® ST Geosynthetic Clay Liner
    BENTOMAT® ST is a reinforced GCL consisting of a layer of sodium bentonite between a woven and a non-woven geotextile, which are needle-punched together.
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    BENTOMAT® 200R Geosynthetic Clay Liner
    BENTOMAT® 200R is a non-reinforced needle-punched GCL consisting of a layer of sodium bentonite between woven and nonwoven geotextiles, which are needle-punched together.
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    BENTOMAT® CLT Geosynthetic Clay Liner
    BENTOMAT® CLT is a composite laminate reinforced GCL consisting of a layer of sodium bentonite between two geotextiles, which are needle-punched together and laminated to a textured geomembrane.
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    BENTOMAT® CL Geosynthetic Clay Liner
    BENTOMAT® CL is a composite laminate reinforced GCL consisting of a layer of sodium bentonite between two geotextiles, which are needle-punched together and laminated to a smooth flexible membrane.
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    Case Studies

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    BAILEY MINE
    West Finley, Pennsylvania
    Bailey Mine, supplies bituminous coal used in the generation of electricity. At the site, coal laden sediment is pumped to settlement ponds which are typically underlain with clay. As the ponds are extended vertically to increase their capacity, the side slopes must be lined with clay or geosynthetic clay liner (GCL) to prevent the pumped water from reentering the local aquifer. 
    DOWNLOAD FULL CASE STUDY

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    BARRICK GOLDSTRIKE MINE
    Elko, Nevada
    The Barrick Goldstrike tailings bottom liner system consisted of an 80 mil HDPE textured geomembrane overlaying BENTOMAT®  DN GCL. The GCL was used as a replacement for the 1 ft of 1 x 10-6 cm/sec permeability compacted clay liner. 
    DOWNLOAD FULL CASE STUDY

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    BORDER CHECKPOINT EMBANKMENT
    Zosin, Spain
    Zosin – UstiƂug is an international border control point for cars and buses. Being located on the eastern border of Poland, it is also one of the checkpoints where foreigners enter the European Union (Schengen area) from Ukraine. Before extension this checkpoint was capable of clearing 1700 automobiles and 6 buses a day. After extension the capacity was doubled and allowed for additional admission of up to 1000 cargo vans a day. 
    DOWNLOAD FULL CASE STUDY

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    CARLOTA COPPER
    Carlota, Arizona, U.S.A.
    The Carlota Copper mine is an open-pit copper mine located approximately six miles west of Miami, Arizona. The site produces LME grade copper cathode through the process of heap leaching, in which a chemical solution is irrigated through heaps of ore, dissolving the precious metal. The resulting copper-infused liquid (aka the pregnant leach solution) trickles down to a leach pad, where it is collected and pumped to a recovery facility. In order to prevent the pregnant leach solution from leaking out, the leach pads are typically comprised of a composite liner system with a geomembrane overlying a low permeability soil layer. 
    DOWNLOAD FULL CASE STUDY

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    COPLER MINE
    Erzincan Province, Turkey
    The Gold Mine Heap Leach project is a large, open pit gold deposit located in central Turkey. The site processes gold ore through leaching, in which a chemical solution is irrigated through heaps of ore, dissolving the precious metal. The resulting gold-infused liquid trickles down to a leach pad, where it is collected and pumped to a recovery facility. 
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    CORDOBA HIGH SPEED RAIL
    Herrera, Spain
    In high speed railroad lines, continued rainfall periods may cause problems due to the presence of soils sensitive to moisture changes. The ground can respond by shrinking (settlement) when it dries, or swelling (heave) when it becomes wet again. This may result with instability of excavation cuts. Many railroad structures and embankments founded on such sensitive, unprotected soils require constant monitoring and remedial measures to prevent a potential failure. 
    DOWNLOAD FULL CASE STUDY

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    DUCK CREEK POWER PLANT
    Central Illnios
    The increased use of coal to generate electricity has brought with it an increased amount of coal combustion by-products (CCBs). Metal ions released from these CCBs can be harmful to the environment and therefore need to be contained. 
    DOWNLOAD FULL CASE STUDY

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    DYCHÓW PUMPED-STORAGE POWER STATION
    Dychow, Poland
    The pumped-storage power station in Dychów was constructed between 1933 and 1936. After 75 years of continuous operation the owner of the facility decided to carry out scheduled maintenance and upgrades. The project was started in 2011 with the renovation of two fissured concrete sections of the approach canal, 9.5 km long in total. 
    DOWNLOAD FULL CASE STUDY

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    FORT MCMURRAY OIL SANDS
    Northeastern Alberta, Canada
    The Suncor Pond 1 is an oil sands tailings pond located near Fort McMurray, Alberta, Canada. This region experiences an average winter temperature of -19 °C, with a record low temperature of -50 °C. Full-scale closure and reclamation activities had been underway at the site since 2007. In late 2009, infilling of the pond had been completed. 
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    FREEMONT WATER RESERVIOR
    Fremont, Ohio
    Constructed in 1911, the Ballville Dam serves as the source of water for the city of Fremont, Ohio. It also blocks fish movement on the Sandusky River, preventing walleye access to an important spawning habitat. As a result, the City of Fremont teamed up with the Ohio Department of Natural Resources to construct a new water supply reservoir, allowing the Ballville Dam to be removed and walleye movement to be unobstructed. 
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    FRESH KILLS LANDFILL
    Staten Island, New York
    Fresh Kills landfill is one of the largest landfills in the world, comprising a total of 2,200 acres. The construction of the cap was to be completed over five construction seasons from 2006-2010. 
    DOWNLOAD FULL CASE STUDY

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    KARNS MEADOWS PONDS
    Jackson, Wyoming
    Karns Meadow consists of 41-acres of land in the middle of Jackson, Wyoming. It contains approximately one mile of Flat Creek, which serves as an important spawning habitat for local cutthroat trout.
    DOWNLOAD FULL CASE STUDY

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    MALLORCA COAL ASH LANDFILL
    Mallorca, Spain
    The increased use of coal to generate electricity has brought with it an increased amount of coal combustion by-products (CCBs). Metal ions released from these CCBs can be harmful to the environment and therefore need to be contained. 
    DOWNLOAD FULL CASE STUDY

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    PLANK ROAD LANDFILL
    Patterson, New Jersey
    Jersey Brownfield was formerly the site of a chemical recycling facility with soil at the site was heavily contaminated. 
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    RASMUSSEN RIDGE PHOSPHATE MINE
    Soda Springs, Idaho
    The Rasmussen Ridge Phosphate Mine Tailing Storage Facility was implemented as part of the on-going Supplemental Reclamation Action as a demonstration project. The cap and cover system was designed to effectively eliminate surface water infiltration and potential runoff of trace concentrations of selenium contained in the waste rock. 
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    TVA KINGSTON
    Harriman, Tennessee
    As part of its emissions control at the Kingston Fossil Plant, flue gas desulfurization is performed, which creates as a by-product a synthetic version of the mineral gypsum and must be stored in a gypsum pond or taken to a landfill. 
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    ZARAGOZA HIGH SPEED RAIL
    Zaragoza, Spain
    In high speed railroad lines, continued rainfall periods may cause problems due to the presence of soils sensitive to moisture changes. The ground can respond by shrinking (settlement) when it dries, or swell-ing (heave) when it becomes wet again. This may result with instability of excavation cuts. Railroad lines founded on embankments comprising sensitive soils require constant monitoring and, in some cases, may require periodic shutdowns and maintenance. 
    DOWNLOAD FULL CASE STUDY

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