Underground Injection Control Class VI (Geologic Carbon Sequestration)

Current understanding

To be populated as evidence accumulates.

2026-10-13 — Colorado Underground Injection Control (UIC) Program; Class VI Primacy: cross-connection with uic-class-vi-primacy: Colorado joins Utah and Alaska in the sequence of state Class VI primacy transfers, shifting day-to-day permitting of geologic CO2 sequestration wells away from EPA to state regulators (except on tribal lands). (novelty: 3)
2026-10-22 — Utah Underground Injection Control Program; Class VI Primacy: EPA proposed rule (2025) would grant Utah primacy to issue and enforce Class VI carbon sequestration well permits, with EPA retaining jurisdiction on Indian lands. (novelty: 3)