New Mexico Statutes 74-4G-8. Covenant not to sue
A. After the department issues a certificate of completion for a site, the secretary of environment shall provide a covenant not to sue to a purchaser of the site that did not contribute to the site contamination for any direct liability, including future liability for claims based upon the contamination covered by the agreement and over which the department has authority. Except as may be provided under federal law or as may be agreed to by a federal government entity, the covenant not to sue shall not release a participant from liability to the federal government for claims based on federal law. Except as may be agreed to by a third party, the covenant not to sue shall not release a person from liability to third parties.
B. The secretary of environment’s covenant not to sue under this section shall be transferable with title to the site.