84. The operator of an engineered landfill may apply to the Minister to be released from any environmental monitoring or maintenance obligation under this Regulation if, during a post-closure monitoring period of a minimum duration of 5 years,
(1) none of the parameters or substances analyzed in the leachate or water samples taken before treatment has exceeded the limit values set out in section 53;
(2) none of the parameters or substances analyzed in the groundwater samples has contravened sections 57 to 59; and
(3) the concentration of methane has been measured in the components of the biogas collection system at a frequency of at least 4 times per year at intervals spread evenly throughout the year, and all the measurements have indicated a concentration of methane less than 1.25% by volume.
To that end, the operator must have a status report pertaining to the state of the landfill and, where applicable, its environmental impacts, prepared by independent experts; the operator must send the status report to the Minister.