“Liner” means a barrier that restricts the downward or lateral flow of the overlying waste and its constituents, or leachate. Liners can be either natural, for instance clay, or man-made, for instance plastic.

Source. (See Revision Note #1 at chapter heading for Env-Sw 100) #8460-B, eff 10-28-05; ss by #14103, effective 10-23-24 (formerly Env-Sw 103.39) (see Revision Note #2 at chapter heading for Env-Sw 100)