THUMS B-116 Well Rework Program at Island White
Summary
SCH Number
2025080102
Public Agency
California Department of Conservation
(DOC)
Document Title
THUMS B-116 Well Rework Program at Island White
Document Type
NOE - Notice of Exemption
Received
Posted
8/4/2025
Document Description
THUMS proposes to rework 1 existing injector well in the Wilmington field (Offshore for wells on Island White (B116). The rework consists of repairing the casing of an existing wellbore by running and cementing a casing sleeve prior to returning the well to its existing use and fall under Group B, of CalGEM’s rework exemptions guidance document published in December 2023.
The proposed project consists of the California Department of Conservation, Geologic Energy Management Division (CalGEM) approving permit # 7052438 for THUMS Long Beach CO. to rework the well listed below, in the Wilmington Oil Field.
API #: 0423720445
Well Name: B-116
Contact Information
Name
Hafiz Ali Mohammed
Agency Name
Department of Conservation, Geologic Energy Management Division
Job Title
Associate of Oil and Gas Engineer
Contact Types
Lead/Public Agency
Phone
Name
Andrew Cochrane
Agency Name
THUMS Long Beach Co
Job Title
Agent
Contact Types
Project Applicant
Phone
Email
Location
Coordinates
Counties
Los Angeles
Regions
Southern California
Township
05S
Range
12W
Section
08
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 1, Existing Facilities (14 CCR §§ 15301, 1684.1)
Reasons for Exemption
Class 1 consists of the “operation, repair, maintenance, or minor alteration of existing public or private structures, facilities, mechanical equipment, or topographical features involving negligible or no expansion of use beyond that existing previously.” This includes “remedial, maintenance, conversion, and abandonment work on oil, gas, injection, and geothermal wells involving the alteration of well casing, such as perforating and casing repair, removal, or replacement; installation or removal of downhole production or injection equipment, cement plugs, bridge plugs, and packers set to isolate production or injection intervals.” (14 CCR § 1684.1.) The proposed project would make minor alterations to the well(s), resulting in negligible expansion of use beyond that existing previously. The proposed project and related permit approval is consistent with the laws that govern the operations, including statutory and regulatory provisions that protect public health, safety, and the environment.
Exempt Status
Categorical Exemption
Type, Section or Code
Class 2, Replacement or Reconstruction (14 CCR § 15302)
Reasons for Exemption
Class 2 consists of the “replacement or reconstruction of existing structures and facilities where the new structure will be located on the same site as the structure replaced and will have substantially the same purpose and capacity as the structure replaced[.]” (14 CCR § 15302.) The proposed project would reconstruct the casing and wellbore(s) of existing wells. The work would take place on the existing wellbore(s) and well pads. The proposed work involves negligible change in use of the wells. The proposed project and related permit approval is consistent with the laws that govern the operations, including statutory and regulatory provisions that protect public health, safety, and the environment.
Exempt Status
Categorical Exemption
Type, Section or Code
Class 4, Minor Alterations to Land (14 CCR §§ 15304, 1684.2)
Reasons for Exemption
Class 4 consists of “drilling operations that result only in minor alterations with negligible or no permanent effects to the existing condition of the land, water, air, and/or vegetation.” (14 CCR § 1684.2; see also 14 CCR § 15304.) The proposed project involves negligible or no vegetation removal, expansion of the existing well pads, and ground disturbance. Therefore, there would be no surface disturbance related activities that would significantly disturb the surrounding environment. The proposed project and related permit approval is consistent with the laws that govern the operations, including statutory and regulatory provisions that protect public health, safety, and the environment.
Exempt Status
Categorical Exemption
Type, Section or Code
Classes 7 and 8, Actions by Regulatory Agencies for Protection of Natural Resources and the Environment (14 CCR §§ 15307
Reasons for Exemption
Class 7 and Class 8 exemptions apply. The exemptions are for actions taken by regulatory agencies as authorized by law to assure the maintenance, restoration, enhancement, or protection of a natural resource or the environment where the regulatory process involves procedures for the protection of the environment.” As demonstrated in the record, the proposed project involves remedial/rework operations to address well integrity issues that requires swift action for protection of a natural resource and the environment.
Attachments
Notice of Exemption
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