(1) The owner or operator of a landfarm facility required to conduct ground water monitoring during active life and post-closure care period pursuant to ARM 17.50.1606, ARM 17.50.1611, and ARM 17.50.1621, shall obtain financial assurance to ensure adequate financial resources are available for closure and post-closure monitoring.

(2) The financial assurance mechanism must comply with the requirements of ARM 17.50.540.