UIC Class VI Primacy (Geologic Carbon Sequestration)

Current understanding

To be populated as evidence accumulates.

2026-10-13 — Colorado Underground Injection Control (UIC) Program; Class VI Primacy: 2026 final rule grants Colorado Class VI primacy, letting the state permit and enforce CO2 geologic sequestration wells (tribal lands remain under EPA); rule also codifies prior Class II oil-and-gas injection program revisions. (novelty: 3)
2026-10-22 — Utah Underground Injection Control Program; Class VI Primacy: EPA proposed to approve Utah’s Class VI primacy application, letting the state’s oil and gas agency permit CO2 geologic sequestration wells (Indian lands excluded). (novelty: 3)
2026-10-29 — Alaska Underground Injection Control (UIC) Program; Class VI Primacy: EPA proposed rule (2025) would grant Alaska primacy to permit and enforce Class VI carbon sequestration injection wells through the state’s Oil and Gas Conservation Commission, excluding Indian lands and exclusive federal jurisdiction areas; national UIC standards unchanged. (novelty: 2)