Railroad Commission briefs Aransas County on Class 6 carbon-storage permitting; one application affects county waters

May 12, 2026

A Railroad Commission official told Aransas County commissioners on May 11 that the agency has primacy to regulate Class 6 underground injection (permanent CO2 geologic storage), described monitoring and safety requirements and said one application affecting Aransas County (offshore state waters) is pending; a local public comment meeting will be held before any permit is issued.

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Rob Castillo, manager of the Railroad Commission of Texas's Special Injection Permits unit, told Aransas County officials at a May 11 workshop that the agency now has primary enforcement authority for Class 6 underground injection control permits for permanent CO2 geologic storage and is reviewing applications that could affect the county.

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