ASTM D7703-16 PDF Download

ASTM D7703-16 is a standard practice for electrical leak location on exposed geomembranes using the water lance method. The purpose of this standard is to provide a performance-based method for locating leaks in geomembranes that are used as barriers to prevent liquids from leaking from landfills, ponds, and other containments. The standard emphasizes the importance of minimizing leakage to prevent environmental damage and product loss.

The standard recognizes that geomembranes are often assembled in the field and can be susceptible to leaks caused by various factors such as poor subgrade quality, poor material quality, accidents, poor workmanship, manufacturing defects, and carelessness. To effectively detect and locate leaks, the standard recommends the use of electrical leak location methods.

This practice is applicable to geomembranes installed in various containment facilities, including basins, ponds, tanks, landfill cells, and canals, among others. It is suitable for geomembranes made of materials such as polyethylene, polypropylene, polyvinyl chloride, chlorosulfonated polyethylene, bituminous geomembrane, and other electrically insulating materials. However, the standard highlights the importance of proper preparations during the construction of the facility for effective leak location.