This guideline recommends regular inspections and maintenance for geosynthetic-lined reservoirs.  A well-defined, site-specific inspection and repair program ensures long-term effectiveness of lined reservoirs.  Floating covers, similarly, benefit from an inspection program. Documented inspections enable operators to detect and address various signs of potential leakage – while minor and repairable. Without this well-defined operation, inspection, and maintenance program and its necessary documentation, many, if not most, geomembranes will develop signs that show a potential for leakage of the stored water and ultimate failure.

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