Bull Moose AGI

The Bull Moose carbon storage project is an acid gas injection (AGI) sequestration operation associated with the Bull Moose Gas Plant and operated by Targa. The project permanently injects treated acid gas (TAG) streams generated from natural gas processing into deep geologic formations for long-term storage. Targa is currently authorized to inject up to 20 million standard cubic feet per day (MMSCFD) of TAG through the approved BM AGI #1 well (API 42-495-34978). The TAG stream is anticipated to consist of approximately 70% CO₂ (carbon dioxide) and 30% H₂S (hydrogen sulfide), with trace hydrocarbons ranging from C1 (methane) through C7 (heptane) and nitrogen. The project has a design life of approximately 30 years and plans to inject TAG into the deep subsurface within the Siluro-Devonian, Fusselman, and Montoya formations. The MRV plan submitted under EPA Subpart RR establishes monitoring, reporting, and verification protocols to quantify injected CO₂ volumes and demonstrate permanent geologic containment.