NOI Permit Rework A-104
Summary
SCH Number
2025080207
Public Agency
California Department of Conservation
(DOC)
Document Title
NOI Permit Rework A-104
Document Type
NOE - Notice of Exemption
Received
Posted
8/6/2025
Document Description
THUMS will rework waterflood (WF) well A-104 (API 0423723708) in the Wilmington Field, located on Island Grissom. The rework consists of placement of a casing sleeve within the existing wellbore and falls under Group B of CalGEM’s rework exemptions guidance document published in December 2023. THUMS will conduct casing repair rework to regain mechanical integrity. The rework activities will allow THUMS to maintain waterflood operation of the well. No new construction or facilities expansion will be required for the rework activities. All activities will be limited to fenced in areas protecting the existing wells that located within concrete cellars. The casing repair rework activities timeline is 10 days. Key stakeholders are THUMS, CalGEM, the City of Long Beach, and POLB.
No impacts to wildlife are anticipated. The wellhead conductor is located in a concrete cellar. All work will occur within established oil and gas well cellars (trenches) in areas that provide minimal value as wildlife habitat. Island Grissom is entirely developed as an oil production facility and does not support wildlife or native botanical species.
The proposed project consists of the California Department of Conservation, Geologic Energy Management Division (CalGEM) approving permit # 7052445 for THUMS Long Beach Co. to rework the well A-104 listed below, in the Wilmington Oil Field, to address well integrity issues.
API #: 0423723708
Well Name: A-104
Contact Information
Name
Grayson Carlton
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
07
Base
SB
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 1, Existing Facilities (14 CCR §§ 15301, 1684.1)
Reasons for Exemption
The “Class 1” (14 CCR § 15301) exemption is applicable per the CEQA Guidelines and CalGEM’s regulations (14 CCR § 1684.1) because the proposed work consists of repair, maintenance, or minor alteration of an existing previously permitted well involving no expansion of former use. The Class includes, but is not limited to: remedial, maintenance, conversion, and abandonment work on oil, gas, injection, and geothermal wells. The well would maintain its existing well type and the use of the well would remain the same as before.
Exempt Status
Categorical Exemption
Type, Section or Code
Class 2, Replacement or Reconstruction (14 CCR § 15302)
Reasons for Exemption
Class 2 applies because it consists of “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[.]” Examples of Class 2 include, but are not limited to, “Replacement or reconstruction of existing utility systems and/or facilities involving negligible or no expansion of capacity.” The proposed project is the rework, or replacement, of the existing wellbore which is needed to maintain mechanical integrity. The rework will be on the same site and would have substantially the same purpose and capacity as the well did before the rework. Additionally, no additional construction will occur.
Exempt Status
Categorical Exemption
Type, Section or Code
Class 4, Minor Alterations to Land (14 CCR §§ 15304, 1684.2)
Reasons for Exemption
Class 4 exemption applies. The proposed project would be conducted entirely on an existing pad with enough space to contain all equipment. The project would not disturb any undisturbed areas. The proposed project is located within an industrial area. Therefore, the proposed project “consists of drilling operations that result in only minor alterations with negligible or no permanent effects to the existing condition of the land, water, air, and/or vegetation.” The rework would not expand the facility.
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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