R 299.9622 Leak detection systems.

Rule 622. (1) Each new unit and lateral expansion or replacement of an existing unit at a landfill, surface impoundment, waste pile, or land treatment facility must include a leak detection system capable of detecting, collecting, and removing leaks of hazardous constituents at the earliest practicable time. (2) If contamination is detected in the leak detection system required by this rule, the owner or operator shall do all the following: (a) Immediately notify the director or the director’s designee. (b) Within 30 days, determine what failures have occurred in the liner system. (c) If failures have occurred, do either of the following on a schedule that ensures the protection of human health and the environment: (i) Repair the failures in the liner system and obtain the certification of a registered professional engineer that, to the best of the professional engineer’s knowledge and opinion, the failure has been corrected. (ii) Cease placing waste in the failed unit and take action to prevent the migration of hazardous waste and hazardous waste constituents from the facility. (3) The director shall grant an exemption from the requirements for a leak detection system if the owner or operator satisfies the waiver requirements for 2 liners and a leachate collection system between the liners established under the provisions of 40 CFR part 264.301.