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Methane gas migration through geomembranes

T. D. Stark, Ph. D., P.E and H. Choi
May 10, 2004
Geosynthetics International

This technical note reviews gas transport mechanisms through flexible geomembranes by measuring methane gas transmission rates, permeance and permeability coefficient of PVC, LLDPE and HDPE geomembranes. A field design chart for estimating methane gas transmission rates for different geomembrane thickness and material is shown that can be used by landfill designers.

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