1 Well Rework Program at Island Grissom, THUMS Long Beach Operating Areas

The California Department of Conservation, Geologic Energy Management Division, is approving a permit for THUMS Long Beach Co. to perform a rework program on oil and gas well A-866 I, identified by API number 0423720178. Located at Island Grissom within the Wilmington field in Los Angeles, California, the project involves repairing the casing of the existing wellbore by cementing a specific area to ensure the well can safely return to its original use. This activity falls under Group B of the CalGEM rework exemptions guidance published in December 2023. The project has been granted a Notice of Exemption from the California Environmental Quality Act, as certified on September 1, 2026. This exemption is based on several categorical classifications, including existing facilities, replacement or reconstruction, and minor land alterations, as well as the protection of natural resources. The project is managed by the Department of Conservation with primary coordination through Associate Oil and Gas Engineer Sheila Harryandi.