1 Well Sidetrack Program at Island Freeman within THUMS Long Beach Operating Areas
Summary
SCH Number
2026100023
Public Agency
California Department of Conservation
(DOC)
Document Title
1 Well Sidetrack Program at Island Freeman within THUMS Long Beach Operating Areas
Document Type
NOE - Notice of Exemption
Received
Posted
10/1/2026
Document Description
THUMS proposes to sidetrack the existing injection well D-607 and convert it to production in the Wilmington field (Offshore on Island Freeman). The sidetrack consists of drilling and installing cemented casing and screen into the Ranger Zone and installing new production equipment.
The proposed project consists of the California Department of Conservation, Geologic Energy Management Division (CalGEM) approving one permit for THUMS Long Beach Company to sidetrack the well listed below, in the Wilmington Oil Field.
API #0423720318
Well Name:D-607
Contact Information
Name
Greg Berg
Agency Name
Department of Conservation Geologic Energy Management Division
Job Title
Associate Oil & Gas Engineer
Contact Types
Lead/Public Agency
Phone
Name
Pradeep Thallapalle
Agency Name
THUMS Long Beach CO.
Job Title
Agent
Contact Types
Project Applicant
Address
Phone
Email
Location
Coordinates
Cities
Los Angeles
Counties
Los Angeles
Regions
Southern California
Township
5S
Range
12W
Section
17
Other Location Info
Los Angeles County Offshore, 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
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.
Exceptions to Exemptions: CalGEM further finds that there are no exceptions to the application of the categorical exemptions (PRC § 21084; 14 CCR § 15300.2) referenced above. For example, there is no substantial evidence that there are any “unusual circumstances” associated with the proposed project that create a reasonable possibility that the activity will have a significant effect on the environment, and that there are no significant “cumulative impacts” resulting from successive projects of the same type in the same place. Therefore, reliance on the exemptions is appropriate. A copy of this NOE (as required by 14 CCR § 15062(a)) and all other related materials can be made available to the public by contacting the CalGEM Long Beach office, located at 3780 Kilroy Airport Way, Suite 400, Long Beach, CA 90806; by calling (562) 637-4400; or an electronic copy of these documents may be requested by contacting CalGEM’s Southern District office at CalGEMSouthern@conservation.ca.gov. The notice filed with the State Clearinghouse may be accessed online at: https://ceqanet.opr.ca.gov
Attachments
Notice of Exemption
Disclaimer: The Governor’s Office of Land Use and Climate Innovation (LCI) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. For more information, please visit LCI’s Accessibility Site.