Geomembrane formulation

February 1st, 2024

Q: We are specifying HDPE geomembrane for a critical project and noticed that GRI-GM13 only requires endurance testing “per formulation.” What is the definition of formulation and can we obtain Kiwa certification for a geomembrane produced using a known formulation?  A: This definition can be found in section three (3) of GRI-GM13. It is as […]

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COMANCO revitalizes Land O’Lakes reject water pond

December 22nd, 2023

COMANCO recently revitalized a reject water pond in Land O’Lakes for Pasco County, Fla. Reject water ponds help protect the environment, ensure regulatory compliance, and enable the recovery of valuable resources. Proper design and management are crucial for water treatment processes’ success and sustainability.  COMANCO has an agreement with Pasco County to inspect, repair, and […]

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The rise of BGMs: A decade of transformation in the geomembrane industry

November 13th, 2023

A decade ago, bituminous geomembranes (BGMs) were a relatively unknown player in the landfill and mining industries. Fast forward to the present day, and BGMs have emerged as a significant disruptor, posing a formidable challenge to traditional high-density polyethylene (HDPE) geomembrane manufacturers. The industry landscape has shifted dramatically, with BGMs steadily gaining market share and […]

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Controlling uplifting gas bubbles in exposed geomembrane-lined ponds—Part 3

April 1st, 2018

Part 1 of this series (Thiel 2017) demonstrated how the size, shape, pressure, and stresses and strains experienced by geomembrane bubbles inflated with gas could be analytically estimated. Part 2 of this series (Thiel 2018) evaluated the considerations for incorporating a gas-venting underdrain below the geomembrane liner. The current, and final, Part 3 of this […]

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