Geomembrane Monitoring Articles

  • Composite Geomembrane Liner for Reservoir Project in Thailand - Case Study

    Composite geomembrane liner is a water impermeable material composed of geotextile and geomembrane. The composite geomembrane liner has the functions and advantages of both geotextiles and geomembranes. The geotextile layer increases essential tensile strength and the geomembrane layer provides excellent impermeable, leak and moisture proof. Composite geomembrane is mainly used for ...

  • Green Pond Liner for Garden Greening Project in Canada - Case Study

    Green pond liner is the kind of HDPE geomembrane Liner which provides excellent impermeability, elongation, long term UV stability and advanced chemical resistance etc. BPM green pond liner is manufactured from a high quality polyethylene with specially formulated and carbon, in addition, its unique waterproof properties are ideal for anti seepage lining in every industry, and the ...

  • Blue Pond Liner for Salt Pond in Chile

    Blue pond liner is the kind of blue high density polyethylene (HDPE) waterproof  material with basic raw material of high molecular polymer and produce with blow molding. The blue pond liner is also called HDPE pond liner or geomembrane pond ...

  • Polyurethane Pond Liner for Aquaculture Farm Projects in Philippines

    Polyurethane pond liner is the kind of low permeable synthetic membrane liner and cost effective geotechnical engineering material which are widely used for water containment, aquaculture farm anti seepage lining applications. Polyurethane pond liner is made of finest quality high density polyurethane with specially formulated, virgin polyethylene resin, ...

  • GCL used in raw water storage reservoir to restore Walleye habitat - Case Study

    Project Details Fremont Raw Water Storage Reservoir Location Fremont, Ohio Products Used BENTOMAT DN BENTOMAT 200R Constructed in 1911, the Ballville Dam serves as the source of water for the city of Fremont, Ohio. It alsoblocks fish movement on the ...


    By CETCO

  • Phosphate mine tailings storage cap and cover system - Case Study

    Project Details Agrium/Nu-West Rasmussen Ridge Phosphate Mine Location Soda Springs, Idaho Products Used BENTOMAT CLT The Rasmussen Ridge Phosphate Mine Tailing Storage Facility was implemented as part of the on-going Supplemental Reclamation Action as a ...


    By CETCO

  • Non-Hazardous Landfill - Case Study

    Municipal solid waste landfill is site for domestic day-to-day waste disposal. Its also known as tip, rubbish dump, dumping ground, etc. Material stored at solid waste landfill is isolated from the environment by sealing layer which can be HDPE or LDPE or even PVC geomembrane. If such geomembrane leaks, the contaminant from landfill is spreading in direction of the groundwater flow. ...


    By Sensor, spol. s r.o.

  • Green Roofs - Case Study

    The green roofs of the buildings are completely covered with vegetation. In event of a leakage in its sealing system, its technically very difficult or in some cases even impossible to locate and repair the leakage. For that reason we developed a Sensor DDS system which is permanently implemented into the roof design. Solution for flat roofs – SENSOR DDS technology The most ...


    By Sensor, spol. s r.o.

  • Measuring Geomembrane Tensile Strength – 1” or Dumbbell?

    Abstract: Specifying a tensile strength or % elongation for any given application is necessary to avoid any possible failure in the geomembrane.  There are many factors to consider including: testing equipment, thickness, load cell, type of grips, and sample geometry.  Although ASTM D7176 currently requires a 1” tensile strip, they will be considering a dumbbell-shaped sample as ...

  • Dike and Levee Upgrade/Repair - Case Study

    The Problem: Economically upgrade and repair dikes that have suffered from severe surface erosion and growth of undesirable vegetation Project: Sarnia, Ontario Tank Farm Retrofit Consulting Engineers: Associated Geotechnical Systems (AGS) General Contractor: Associated Geotechnical Systems (AGS) ...


    By Presto Geosystems

  • Interest Growing in Mining Applications for Geosynthetics

    Some 40 percent of the geosynthetics manufactured today are used by the mining industry, according to one estimate, and there are predictions that figure will increase as the industry continues to adopt mining technologies that help improve efficiency and protect the environment. Jack Caldwell, an engineer at Robertson GeoConsultants, has gone as far as to say, “We believe that ...


    By Agru America, Inc.

  • 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 ...

  • 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 ...

  • 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 ...

  • 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, ...

  • 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 ...

  • 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 ...

  • 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 ...

  • Comparison of dye testing and electrical leak location testing of a solid waste liner system

    Abstract: Dye tracing and electrical leak location testing were independently conducted to detect and locate leaks in the primary geomembrane liner of two cells in a municipal landfill. Despite extensive quality control and quality assurance programs, water in the leak detection zone after construction indicated that the primary liner had a leak. Fluorescein dye tests were conducted by placing a ...

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