THUMS D-432 Well Sidetrack Program at Island Freeman

The THUMS D-432 Well Sidetrack Program is a project managed by the California Department of Conservation, Geologic Energy Management Division, involving the rework of well D-432 (API 0423722262) at Island Freeman in the Wilmington Oil Field. Authorized under permit 7056579, the scope of work includes sidetracking the well to add pay from an existing well head and reconstructing the casing and wellbores on existing pads. These remedial and rework operations are designed to address well integrity issues without requiring the construction of new or expanded facilities. The project is located in Los Angeles Offshore and is subject to specific regulatory requirements, including compliance with SB 1137 and Public Resources Code section 3280(b) due to its location within a Health Protection Zone. The California Department of Conservation has issued a Notice of Exemption dated July 14, 2026, determining that the project is exempt from full environmental review under the California Environmental Quality Act based on categorical exemptions for existing facilities, minor land alterations, and the protection of natural resources.