After putting numerous safeguards in place to protect public safety and the environment, the Division of Oil, Gas, and Geothermal Resources (DOGGR) and California Public Utilities Commission (CPUC) have concurred that natural gas injection may resume at the Aliso Canyon storage facility.
Before, and soon after, resuming injection, Southern California Gas must comply with the requirements of an order issued by DOGGR, including flyovers to check methane levels.
Since the leak was plugged at the Los Angeles County facility, significant improvements and upgrades have been made to infrastructure, testing, operations, and monitoring to ensure safe operations.
DOGGR completed a comprehensive safety review at Aliso Canyon in January 2017, consulting with the nationally recognized experts from the Lawrence Livermore, Lawrence Berkeley and Sandia National Laboratories on extensive site inspections and review of Southern California Gas's testing. The facility will operate with significantly reduced storage capacity and maximum injection pressures.
Documents regarding the State Oil and Gas Supervisor's determination that natural gas injection may resume at the Aliso Canyon Storage Field:
Order No. 1118 Compliance Documents
Order from the State Oil and Gas Supervisor
Lawrence Berkeley National Lab Approves of Seismic Study
Open Letter to the Southern California Gas Company and the Public
Public Comment Summaries and Responses Regarding the Comprehensive Safety Review Findings
Written Comments on Safety Review
Aliso Canyon Public Meeting Transcript, Feb. 1, 2017
Aliso Canyon Public Meeting Transcript, Feb. 2, 2017
Calif. Public Utilities Commission
revised report -- Aliso Canyon Working Gas Inventory,
Production Capacity, Injection Capacity, and Well Availability for Reliability -- July 19, 2017.
Letter from State Oil and Gas Supervisor to Southern California Gas Company regarding wells to be permanently plugged and abandoned, July 24, 2017
Southern California Gas Company Response to Division of Oil, Gas, and Geothermal Resources Letter, July 28, 2017
Acknowledgement letter from State Oil and Gas Supervisor to Southern California Gas Company, August 3, 2017
Letter from State Oil and Gas Supervisor to Southern California Gas Company requesting continued pressure monitoring reports until further notice, September 1, 2017
A webcast presentation of the rigorous testing done to all wells at the Aliso Canyon Storage Facility can be seen here:
Test results submitted by Southern California Gas and reviewed by Division of Oil, Gas, and Geothermal Resources staff are posted on
Safety Testing and Review Requirements: Aliso Canyon Well Test Results
Southern California Gas Reports to the Division of Oil and Gas: