"Geomembrane" means an essentially impermeable membrane used with foundation, soil, rock, earth, or any other geotechnical engineering-related material as an integral part of a man-made structure or system designed to limit the movement of liquid or gas into or out of the system.
N.H. Admin. Code § Env-Sw 103.10
(See Revision Note at chapter heading for Env-Sw 100) #8460-B, eff 10-28-05