HB 458 creates the Geologic Carbon Dioxide Storage Stewardship Act, a new framework for regulating long-term underground storage of carbon dioxide in New Mexico. The bill defines key terms such as carbon dioxide, geologic sequestration, pore space, sequestration facilities, and sequestration units, and gives the Oil Conservation Division of the Energy, Minerals and Natural Resources Department authority to enforce the act, adopt rules, and issue orders. It applies primarily to sequestration facilities that begin injecting carbon dioxide after the act’s effective date, while allowing some existing facilities to seek transfer of stewardship responsibilities to the state if they meet the bill’s requirements and pay the applicable fee.
The bill establishes a process for operators to obtain a certificate of closure and, later, a certificate of completion of injection operations. Once the division issues a certificate of completion, stewardship responsibilities for the stored carbon dioxide and related facility transfer from the operator to the state, and the operator, owners, generators, and transporters are generally released from stewardship obligations and bonds. The bill also creates the Geologic Carbon Dioxide Long-Term Storage Stewardship Fund, financed by a fee of at least ten cents per metric ton of carbon dioxide injected, to pay for monitoring, remediation, plugging wells, enforcement, emergency response, and post-closure oversight.
HB 458 also clarifies ownership of pore space, declaring that pore space generally belongs to the surface estate owner unless it has been severed or explicitly conveyed otherwise. It further provides that mineral conveyances do not automatically transfer pore space rights, and it limits notice requirements so that pore-space owners are not automatically entitled to notice unless another law specifically requires it. These provisions are intended to reduce uncertainty over who controls subsurface storage rights and how carbon dioxide storage projects can be sited and managed.
The overall sentiment around the bill appears generally favorable, as reflected by strong bipartisan support in both chambers and successful final passage in the House and Senate. The votes suggest broad agreement on creating a state framework for carbon storage and on providing long-term stewardship rules for a growing carbon management industry. The bill’s structure also indicates an effort to align state law with federal Class 6 underground injection control requirements.
The main points of contention are likely to involve liability, financial responsibility, and property rights. The bill shifts long-term stewardship to the state after closure, but it preserves operator liability for pre-transfer conditions and allows the division to deny release in cases of misinformation, concealment, unresolved violations, drinking-water threats, or insufficient fund resources. Potential concerns may also arise from the fee on injected carbon dioxide, the scope of state responsibility after transfer, and the declaration that surface owners generally own pore space, which could affect mineral interests and future carbon storage negotiations.
HB 458 would add a new statutory regime governing geologic carbon dioxide sequestration, including permitting-related closure procedures, state stewardship transfer, a dedicated long-term storage fund, and rules for pore-space ownership. It would expand the Oil Conservation Division’s regulatory authority, create new fee and fund mechanisms, and establish conditions under which operators can be released from ongoing stewardship obligations after site closure. The bill would also affect surface owners, mineral interest holders, sequestration operators, and state agencies responsible for post-closure monitoring and enforcement.
The bill appears to have received generally positive treatment in the legislature, with substantial majorities voting in favor in both the House and Senate. The absence of recorded committee transcript opposition in the provided materials and the successful final passage suggest that lawmakers broadly supported the policy goal of enabling carbon storage while assigning long-term oversight to the state. The vote margins indicate some dissent, but not enough to prevent enactment.
Likely areas of disagreement include who bears long-term liability after a sequestration site closes, whether the state fund will be sufficient to cover future monitoring and remediation costs, and how much financial assurance operators must maintain before transfer of stewardship. Property-rights issues may also be contentious, especially the bill’s rule that pore space belongs to surface owners unless severed or expressly conveyed, which could affect mineral owners, landowners, and carbon storage developers. Environmental and water-protection concerns are addressed through the bill’s exceptions to liability release, particularly where migration threatens underground drinking water sources.