ASTM D7703-22 PDF Download

The ASTM D7703-22 standard provides guidelines for the electrical method of locating leaks in exposed geomembranes. The standard defines a "leak" as any type of breach in an installed geomembrane, such as holes, punctures, tears, seam defects, cracks, or knife cuts.

This practice is applicable for geomembranes installed in various containment facilities, including basins, ponds, tanks, ore and waste pads, landfill cells, landfill caps, and canals. It is suitable for geomembranes made of different materials, such as polyethylene, polypropylene, polyvinyl chloride, chlorosulfonated polyethylene, bituminous geomembranes, and other electrically insulating materials.

The standard emphasizes that the proper preparations must be made during the construction of the facility to effectively utilize this practice for locating geomembrane leaks. This ensures that the method is most applicable and accurate in identifying leaks in exposed geomembranes.