Leachate-collection and associated leachate-removal systems shall be: (1) constructed of materials that are chemically resistant to the leachate expected to be generated; (2) of sufficient strength and thickness to prevent collapse under the pressures exerted by overlying wastes, waste cover materials, and by any equipment used at the landfill; and (3) designed and operated to function through the scheduled closure and post-closure care period of the landfill considering the following factors: (A) estimated rate of leachate removal; (B) capacity of sumps; (C) pipe material and strength, if used; (D) pipe network spacing and grading, if used; (E) collection sump materials and strength; (F) drainage media specifications and performance; and (G) demonstration that pipes and perforations will be resistant to clogging and can be cleaned. |
