690678_THUMS_Rework_OG_UIC
Summary
SCH Number
2025061158
Public Agency
California Department of Conservation
(DOC)
Document Title
690678_THUMS_Rework_OG_UIC
Document Type
NOE - Notice of Exemption
Received
Posted
6/25/2025
Document Description
THUMS proposes to rework 1 existing oil and gas well in the Wilmington field Offshore Island Freeman (D530). The rework consists of running inner liner inside the existing wellbore and returning the well to its existing use. Temporary equipment such as pumps and return bins may be needed. Various mobile temporary equipment will be used including, but not limited to, Tier 4 workover rig, etc., and vehicles or vessels to transport personnel and materials to/from the site. No production facilities and no new ground surface disturbance will be associated with this project. Any waste materials will be properly disposed of in accordance with all applicable laws and regulations. All rework activities, including maintenance services are primarily contracted to specialists in their particular service. Therefore, there are always a number of service companies and suppliers busy at the THUMS operating sites. Their equipment is of a portable nature arriving at Pier J, located within the Port of Long Beach (POLB), which has controlled access to all oil and gas wells and associated production facilities, or on the hourly boat transports or barges to Islands White and Freeman. The portable equipment is removed whenever a specific job is completed.
The proposed project consists of the California Department of Conservation, Geologic Energy Management Division (CalGEM) approving 1 permit for THUMS Long Beach Co. to rework the well listed below, in the Wilmington Oil Field, to address well integrity issues.
API # Well Name
0423722878 D-530
Contact Information
Name
Michael Spann
Agency Name
Department of Conservation, Geologic Energy Management Division
Job Title
Staff Services Manager
Contact Types
Lead/Public Agency
Phone
Email
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, Statewide
Township
05S
Range
12W
Section
17
Base
SB
Other Location Info
Offshore: Island Freeman - Wilmington Oil Field
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 of the existing wellbore, which is needed to return the well to its existing permitted use.
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.
Attachments
Notice of Exemption
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