1. (a) Subject to (d) of this section, the department will not require the installation of a liner, groundwater monitoring, or methane gas monitoring for a landfill located in permafrost regions if the owner or operator of the landfill demonstrates that

   1. (1) the landfill site is designed, developed, and operated to prevent permafrost degradation and to ensure all of the waste will freeze with the permafrost and remain frozen;
   2. (2) a sufficient number of temperature sensing devices are installed and monitored to detect any thawing in the waste;
   3. (3) oils, liquids from spill cleanups, and waste that is incompatible with freezeback will not be placed in the landfill; and
   4. (4) after closure, the waste will remain frozen.
2. (b) The owner or operator of a landfill that is subject to this section shall monitor for temperature and erosion during the active life and during post-closure of the landfill.
3. (c) If any portion of a landfill that is subject to this section thaws during the active life or during the post-closure care period, the owner or operator shall take corrective measures to re-freeze the waste or begin groundwater monitoring and corrective action in compliance with 18 AAC 60.800 - 18 AAC 60.860.
4. (d) For a Class I MSWLF, the demonstration required by (a) of this section must also contain the demonstration required by 18 AAC 60.820(d).

(Eff. 9/7/2002, Register 163; am 2/25/2022, Register 241)

Authority: AS 44.46.020, AS 46.03.020, AS 46.03.110, AS 46.03.010, AS 46.03.100, AS 46.06.080