
Carbon sequestration (i.e. subsurface disposal) is a controversial and divisive topic, and important questions regarding the costs and benefits remain. Nonetheless, the Infrastructure Bill of 2021 authorized the disposal of CO2 on the OCS, and stipulated that the Secretary of the Interior promulgate regulations for that purpose. However, that major task cannot be completed without a better understanding of the potential environmental impacts.
BOEM has announced a study (see attached pages from their new Environmental Studies Plan) to consider the potential for CO2 leakage and related environmental concerns. A few excerpts from BOEM’s summary follow:
Problem: Potential CO2 leakage from carbon sequestration (CS) project activities could occur via a number of pathways. Few studies model and/or measure CO2 leakage, transport, dispersion, attenuation, and environmental impacts in the offshore environment, and those that do exist are preliminary.
Intervention: BOEM needs more information about the dynamics, fate, transport, and potential environmental impacts of CO2 leakage under various scenarios, including worst-case, on the OCS to inform the new nationwide CS Program and to protect the environment from CO2 leakage.
Comparison: The study will model CO2 leakage under various scenarios, including worst-case scenarios, using the GOM OCS Region as a case-study and can be applied to all OCS regions. Outcome The leakage and worst-case scenario modeling will aid BOEM’s ongoing rulemaking efforts, program development and implementation, and future operational needs including NEPA analyses, lease planning, lease stipulations, consultations, plan and permit approvals, mitigation measures, risk assessment and monitoring requirements, etc. Study results will also provide direction for future studies to include field and/or laboratory analyses.
The performance period for this important study extends through 2027, so it’s hard to envision final CS regulations prior to that date. You can’t issue regulations without first assessing the potential harm that could result from their promulgation (as required by NEPA).
BOEM’s summary mentions “the anticipation of a CS lease sale in the GOM after final regulations are published.” Hopefully, this also means that BOEM will not permit improperly acquired oil and gas leases (Sales 257, 259, and 261) to be converted to CS leases.
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