geomembrane installation Articles

  • Costs and Benefits of Geomembrane Liner Installation CQA

    ABSTRACT Because the cost of third-party construction quality assurance (CQA) of geomembrane liner installations is typically comparable to the cost of the geomembrane liner, CQA must be optimized to obtain the most benefit for the owner, rate payers, and environment. A regulation-based CQA protocol usually includes testing the material, observing the quality control (QC) program of the ...

  • The Lighter Side of Geomembranes

    Geomembrane installations often cover substantial areas. Landfill cells pose enormous footprints. Oil and gas pits, industrial processing ponds, and wastewater containment ponds are large installations too, and each year they tend to be built a little larger. The scaling up of these facilities is not just a matter of achieving better operational economics for the ...


    By Nilex

  • Enhanced Geomembrane CQA through proper application of geomembrane leak location surveys

    Abstract Historically, geomembrane construction quality assurance (CQA) has focused on destructive testing of welded seams to verify seam strength and integrity. Paradoxically, seams are not subject to significant stress and practically never fail in service, while holes and construction damage in the geomembrane are a much more widespread problem. The historical approach fails to evaluate ...

  • Capturing biogas energy to increase your business profits while safeguarding the environment

    Methane is a biogas produced from swine or cow manure, as well as food processing and meat packing waste. Methane is a natural gas, that when left uncollected, contributes to the harmful greenhouse gases in the earth’s atmosphere. When biogas is captured under a cover and becomes concentrated, it creates a corrosive and toxic byproduct called hydrogen sulfide. The gas generates a rotten egg ...

  • Locating Geomembrane Liner Leaks under Waste in a Landfill

    Abstract An Electrical Leak Imaging and Monitoring (ELIM SM) survey was used to locate leaks under 2.5 meters of stabilized waste in an active geomembrane-Iined landfill. The landfill is lined with two 2-mm thick HDPE geomembranes that are separated by a geonet drainage layer. The primary liner is covered with 600 mm of drainage sand and 2.5 meters of stabilized waste for a total cover ...

  • Rainstore3 Installation Instructions Water Harvesting For Stormwater Drainage Containment & Reuse with Geomembrane Liner

    This document describes how to properly install the Rainstore3 water storage system with geomembrane for stormwater containment and reuse. Containment allows for on site subsurface water storage for many non-potable applications such as irrigation. Contractors: Only licensed contractors should install the Rainstore3 system. The contractor should have a good performance record with similar ...


    By Invisible Structures, Inc.

  • Performance-Based Specification Of Electrical Leak Location Surveys For Geomembrane Liners

    ABSTRACT Electrical leak location surveys can be a crucial part of the final quality control of geomembrane liner installations. The method has been offered as a commercial service since 1985 and is the only practical test method that can find holes in the liner after protective soil cover is put on the liner. During the past fourteen years the test method has been used on a wide variety of ...

  • Experience with GCLs used as a conductive layer in geomembrane leak-location surveys

    Engineers, installers, regulators, and owners are starting to rely on geomembrane leak-location surveys as part of the construction quality assurance for landfills. The various methods are described in ASTM Standard D 6747.' Standard procedures for conducting leak-location surveys of geomembranes covered with earth materials are described in ASTM Standard D 7007.2 Figure 1 shows the ...

  • Detection and Location of Leaks in Geomembrane Liners Using an Electrical Method: Case Histories

    ABSTRACT A field-proven electrical technique, developed at Southwest Research Institute, San Antonio, Texas, is commercially available to detect and locate leaks in geomembrane liners. The electrical technique is used to inspect 100% of the geomembrane material that is covered by a conducting liquid. A voltage applied across the liner produces a uniform electrical potential distribution in ...

  • Locating Leaks in Geomembrane Liners of Landfills Covered With a Protective Soil

    ABSTRACT The electrical leak location method was used to locate leaks in the geomembrane liners of single-lined and double-lined landfills covered with a protective soil cover. The landfills ranged in size from 0.40 hectare (one-acre) to 3.2 hectares (eight-acre). Water in the leak detection system under the primary liner indicated the primary liners were leaking. The principal of ...

  • Easy roller deployment system puts installation back on schedule

    PROJECT: Coal Ash Disposal - Midwest Utility LOCATION: Central Illinois PRODUCTS: BENTOMAT® SDN, EASY ROLLERTM DEPLOYMENT SYSTEM BACKGROUND: 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 ...


    By CETCO

  • Slurry Lagoon Mountmellick - case study

    Lining Tech have completed lining works to construct a cost efficient 1,000,000 gallon geomembrane lined slurry lagoon in Mountmellick, County Laois. Works included the installation of a 2.5mm smooth HDPE liner in accordance with the Department of agriculture's specification S126 for geomembrane lined slurry lagoon. Works also included the fabrication and sealing of five pipe boot details around ...

  • Specifying allowable leakage rates

    Introduction Allowable Leakage Rates or Action Leakage Rates (ALRs) are specified for installed geomembranes to quantify the maximum allowable liquid leakage. If the ALR is exceeded, corrective action must be taken to reduce the leakage rate below the set limit. To lower the leakage, the holes in the geomembrane are located and repaired. In some cases, the ALR is set so low that, ...

  • Using Geosynthetics in Slope Stability

    The majority of slope failures within the geosynthetics industry can often be avoided with proper engineering and material selection. However, the factors that affect slope stability can be difficult to discern and measure. Soil thickness, seepage forces, seismic forces, gas uplift, geomembrane texturing, engineering and provision of reinforcing elements are only a few of the factors affecting ...


    By Agru America, Inc.

  • Designing A Better Alternative for Post-Closure Care

    After a landfill has reached the end of its service phase, federal law requires owners to install a final soil cover and maintain it over the next 30 years. This is the traditional strategy that most landfill owners employ and represents a significant cost of business. When all the layers are tallied together, the capping and post-closure period can cost up to $400,000 for a small, 100-acre ...


    By Agru America, Inc.

  • Cutting holes for testing vs. testing for holes

    When it comes to geomembrane quality assurance, are destructive testing practices as effective as basic leak detection technologies? The function of a geomembrane liner is to prevent liquid flow to the environment. CQA measures should be judged on how effective they are in meeting this requirement. This article critically examines the industry’s current means of providing confidence ...

  • DHL logistics campus ground water protection case study

    When the massive logistics campus in Unna begins operations in the near future, it will change the face of the region. Approx. 350 people will be working in the massive 90,000 square meter hall helping two million pallets annually get to their proper destination. The facility requires proper safeguards especially with regards to chemical materials. The leading international logistics company DHL ...


    By NAUE GmbH & Co.KG

  • Orana WTS emergency pond - case study

    Lining Tech have successfully completed subcontract geosynthetic lining works for Ostwald Bros on an Origin Energy APLNG emergency Pond in Orana, Queensland. The project included: Installation of 36,000m2 of a 1.5mm HDPE geomembrane liner Installation of HDPE level indicators to pond Fabrication and installation of HDPE access ladders Fabrication of HDPE sand tubes to ...

  • Landfill Liners Vary by Application

    It was in 1991 that the Environmental Protection Agency promulgated its Criteria for Municipal Waste Landfills that set location restrictions, design and operating standards, groundwater monitoring requirements, corrective actions, closure requirements, and more for landfills. It was these rules that mandated that landfills be lined on the sides and bottom before waste is deposited and capped on ...


    By Agru America, Inc.

  • Solar energy landfill caps

    Things weren’t going well at the Erewhon Landfill. It was time to close the facility, and there was no soil left onsite for construction of the cap. Erewhon was a County facility, and the money available for 30 years of post-closure gas monitoring, groundwater sampling and reporting, erosion repairs and maintenance of a grass cover was sorely needed elsewhere. The landfill manager recalled ...


    By Waste Advantage Magazine

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