Southern California Gas Company (SoCalGas) operates the Aliso Canyon natural gas underground storage facility at 12801 Tampa Avenue in Northridge, CA 91326. On October 23, 2015 SoCalGas discovered that Well SS25 used to inject and withdraw natural gas from the underground storage reservoir at their Aliso Canyon facility was leaking. On February 18, 2016, the California Department of Conservation, Division of Gas and Geothermal Resources (DOGGR) provided notice to the public confirming that Well SS25 at the Aliso Canyon Gas Storage Facility has been successfully sealed.
South Coast Air Quality Management District (SCAQMD) and California Air Resources Board (CARB) staff have jointly developed a set of criteria to determine when air quality in the surrounding communities of the Aliso Canyon facility has returned to typical conditions - a checklist to determine when the air quality is no longer being impacted as a result of the leak. Click on the following links for information about:
SCAQMD staff is at the Aliso Canyon facility and the surrounding community on a daily basis to observe and monitor operations and to conduct ambient air measurements both within the facility and offsite in Porter Ranch and surrounding communities. SCAQMD will continue to monitor ambient air levels and provide updates on this website.
Information about other actions SCAQMD has taken in response to the natural gas leak from Well SS25 is available at the links below:
Links to other agencies participating in the response to the Aliso
Canyon gas leak are available here.