Construction Quality Assurance for Geomembranesby Gordon P. Boutwell, Soil Testing Engineers, Inc, United States,
Abstract: The results of and lessons learned from construction quality assurance (CQA) programs on 19 geomembrane liners are presented. The specifications are generally exceeded by comfortable margins using any of several failure criteria. Observed leak frequencies produce theoretical flow rates close to EPA's 'de minimus' seepage. Errors in workmanship tend to be concentrated on weekend work and specific individuals. The most frequent problems in CQA programs are not defining 'failure' in advance and not tracking discrepancies through their resolution.
Subject Headings: Quality control | Geomembranes | Failure analysis | Water quality | Construction management | Linings | Soil water | Porous media
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