[§508C-9] Duration; amendment by court action. (a) An environmental covenant shall be considered perpetual unless it is:
(b) If the agency that signed an environmental covenant determines that the intended benefits of the covenant can no longer be realized, [an] environmental court, under the doctrine of changed circumstances, in an action in which all persons identified in section 508C‑10(a) and (b) have been given notice, may terminate the covenant or reduce its burden on the real property subject to the covenant. The agency's determination or its failure to make a determination upon request is subject to review pursuant to chapter 91.
(c) Except as otherwise provided in subsections (a) and (b), an environmental covenant shall not be extinguished, limited, or impaired through issuance of a tax deed, foreclosure of a tax lien, or application of the doctrines of adverse possession, prescription, abandonment, waiver, lack of enforcement, or acquiescence, or a similar doctrine. [L 2006, c 279, pt of §2; am L 2014, c 218, §8]