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Saturday, October 16, 2021

Timeline: Major developments in the Aliso Canyon gas leak

Saturday, October 23 will mark the sixth anniversary of the discovery of the Aliso Canyon natural gas leak at the Southern California Gas Company’s gas storage facility near the top of Oat Mountain in the Santa Susana Mountains.

related: SoCalGas, parent company Sempra agree to $1.8 billion Aliso Canyon gas leak settlement

On that date in 2015, crews discovered a methane leak rising from an 8,750-foot-deep well, named Standard Season 25, or SS25 for short, which was installed in 1953. The well was converted into a gas storage on June 6, 1973.

Company spokesman Javier Mendoza said in an email a few days after the leak that “SoCalGas and other experts expect it to take several days or more to identify the safest and best solution to prevent and repair the leak.” . Repairs have not started yet.”

News of the gas leak was first spoken publicly on October 26 during a scheduled meeting with Porter Ranch neighbors to discuss a turbine replacement project. Although the first letter about the leak was emailed to some people in the Porter Ranch community on October 27, as of October 31, SoCalGas had sent letters to about 8,000 residents.

The company’s letter, sent on October 31, included an apology for not contacting residents early. The letter also contained a website link regarding the well repair effort and updates on the company’s home page.

On November 19, the Los Angeles County Department of Public Health ordered SoCalGas to offer free temporary rehabilitation assistance to residents of Porter Ranch who have experienced dizziness, gastrointestinal discomfort, nausea, nose bleeds and respiratory problems since the leak. facing problems.

The California Department of Conservation’s Division of Oil, Gas and Geothermal Resources estimated in mid-November that the well was releasing between 500,000 and 1 million cubic feet of methane per day.

The gas leak was finally controlled on February 11, 2016. The well was “officially sealed” as of February 18, 2016.

The Aliso Canyon Storage Field is one of the largest natural gas fields in the United States. It has a capacity of 84 billion cubic feet of natural gas, according to California Public Utilities Commission documents. There are 115 wells in the ground.

Here is a sampling of important dates since the Aliso Canyon natural gas leak occurred:

-October 23, 2015 – Employees of the Southern California Ga Company discovered a leak in SS25.

-October 26, 2015 – Los Angeles County Fire Chief Daryl Osby reports that SoCalGas notified its office of the leak.

-October 28, 2015 -SoCalGas began posting leaked updates on their website.

-November 4, 2015 – Residents and stakeholders in Porter Ranch, including the newly formed nonprofit Save Porter Ranch, flooded a meeting of the Porter Ranch Neighborhood Council to hear that the gas company and other agencies should be involved in well repair and health What to say about concerns. induced by leakage.

-November October 6, 2015 – SoCalGas tries a saline solution to stop the leaking well.

-November 18, 2015 – The California Department of the Conservation of Oil, Gas and Geothermal Resources issued an emergency order to SoCalGas to turn over test data and submit a plan to stop the leak.

-November 19 – The Los Angeles County Department of Public Health ordered SoCalGas to provide free temporary relocation assistance for families who want to leave their Porter Ranch homes.

-Nov 26, 2015 – SoCalGas says the company had 503 inquiries about the relocation and that 132 families took up the offer to relocate.

-Nov 30, 2015 – SoCalGas said it could take up to four months to repair the leak. The number of families relocated has increased to around 300.

-December 1, 2015 – Dennis Arriola, president and CEO of SoCalGas Company, apologizes to residents. The number of families to be relocated has increased to around 1,000.

-December 7, 2015 – Los Angeles City Attorney Mike Feuer filed a civil suit against the Southern California Gas Company, alleging that the leak caused harm to residents’ health and the environment.

-December 10, 2015 – The California Department of the Conservation of Oil, Gas and Geothermal Resources issued a second emergency order and began forming a special panel to oversee the gas company’s plans to fix the leak. Rep. Brad Sherman asked the Environmental Protection Agency to investigate.

Los Angeles Mayor Eric Garcetti, SoCal Gas President and CEO Dennis Arriola, center, with SoCal COO Brett Lane to visit the Aliso Canyon facility in the Porter Ranch neighborhood of Los Angeles on Wednesday, December 2, 2015. Refer to the drilling of a relief well to prevent a gas leak at an adjacent well in an underground storage area. (Irrfan Khan / Los Angeles Times via AP)

-December 11, 2015 – The Federal Aviation Administration issued a temporary ban on aircraft flying over Porter Ranch until March 8, 2016 for safety reasons. SoCalGas says they have 3,477 inquiries regarding relocation assistance.

-December 12, 2015 – Residents call for the closure of the Aliso Canyon storage facility during a protest at the gas field gate near the top of Tampa Avenue. The protest was organized by Save Porter Ranch. Javier Mendoza, a spokesman for SoCalGas, says, “The loss of Aliso Canyon could have a direct impact on electric grid reliability. Electric generators served by Aliso Canyon would be subject to natural gas cuts, which in turn could lead to power blackouts .

-December 15, 2015 – The Los Angeles County Board of Supervisors declares a state of emergency. The action, proposed by supervisor Michael Antonovich, paves the way for federal and state aid. The Los Angeles City Council approved emergency proposals for relocation efforts, occupation and resident tax relief. SoCalGas opens a community resource center for information about relocating, filing a claim, and receiving free home air filtration and weather stripping to reduce gas leak odors.

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-December 17, 2015 – The Los Angeles Unified School District Board votes to transfer students and staff from the two Porter Ranch schools. The first infrared video shows a gas plume at Porter Ranch.

-December 18, 2015 – SoCalGas says more than 2,000 homes have been moved to temporary housing.

-December 24, 2015 – Another attempt to pump fluid into the well to stop the leak failed.

-December 29, 2015 – The United States Environmental Protection Agency begins an investigation into the gas leak.

-January. 6, 2016 – Governor Jerry Brown declares a state of emergency over a gas leak.

-January. October 8, 2016 – SoCalGas seeks approval to capture and burn gas leaked from the well’s site.

-January. 18, 2016 – SoCalGas says the leak will be fixed by the end of February 2016.

-January. 20, 2016 – Los Angeles County Health Department to expand aerial surveillance in and around Porter Ranch.

-January. 23, 2016 – The South Coast Air Quality Management District orders closure after plugging a leaking well.

-January. 25, 2016 – Porter Ranch businesses file a class-action lawsuit against SoCalGas over loss of revenue.

-February. 2, 2016 – Los Angeles County District Attorney Jackie Lacey files a felony criminal lawsuit against SoCalGas for failing to immediately report the gas leak. California Attorney General Kamala Harris filed suit against SoCal Gas.

-February. 11, 2016 – SoCalGas says gas leak has been temporarily controlled.

-February. 18, 2016 – The standard season 25 well is officially sealed.

-February. 25, 2016 – Researchers at the UC Davis and Irvine campuses as well as the National Oceanic and Atmospheric Administration published a study showing that 100,000 tons of methane that erupted into the atmosphere from a gas leak were the highest ever recorded The biggest natural gas leak that happened was the disaster. we

— May 10, 2016 — Gov. Jerry Brown signs SB 380, which requires SoCalGas officials and state regulators to comply with stricter safety standards, before reopening the Aliso Canyon storage facility.

-June 22, 2016 – President Barack Obama signed the Protecting and Enhancing Security Act of 2016 on our infrastructure pipelines. The bill, originally written by Representative Steve Knight and later merged into bipartisan legislation, aims to prevent natural gas leaks. Aliso Valley.

– September 13, 2016 – SoCalGas has agreed to pay a settlement of $4.3 million for failing to immediately report the gas leak. The settlement is part of a misdemeanor criminal trial filed by the LA District Attorney in February.

-February. 9, 2017 – The California Public Utilities Commission begins an action to reduce or close down Aliso Canyon for the Los Angeles area “while maintaining the energy and reliability of electricity.”

-July 19, 2017 – State regulators allow the storage facility to operate and partial gas injection can resume.

-January. 29, 2019 – Los Angeles Fire Department firefighters sued SoCalGas as the lawsuit was filed in Los Angeles Superior Court.

-February. 25, 2019 – Los Angeles Superior Court Judge Carolyn Kuhl approved a $120 million settlement—a consent decree between the Southern California Gas Company and city, county, and state officials—that would fund a long-term health study and other environmental projects. Will fund

-May 17, 2019 – An independent investigation report by Blade Energy Partners found that the root cause of the leak was the rupture of a well due to microbial corrosion from outside as a result of contact with groundwater.

-November 20, 2019 – Governor Gavin Newsom sent a letter to the California Public Utilities Commission seeking the advice of an independent third-party expert on whether to permanently close the Aliso Canyon facility.

-February. 20, 2020 – Los Angeles Superior Court Judge Carolyn Kuhl orders SoCalGas to pay $525,610 for “repeated failure to provide sufficient justification to withdraw thousands of alleged privileged documents.”

-August 5, 2021 – Dozens of residents and activists line up to speak at an agency meeting to prevent the company from expanding its capacity, the state agency overseeing operations at the Aliso Canyon natural gas storage facility Urged to.

-July 27, 2021 – Los Angeles County supervisors voted unanimously to send a letter to the California Public Utilities Commission overseeing operations at the Aliso Canyon natural gas storage facility to prevent SoCalGas from expanding the site’s storage capacity does.

— September 27, 2021 — Southern California Gas Company and its parent company Sempra Energy agree to pay up to $1.8 billion to settle the claims of more than 35,000 victims of the 2015 Aliso Canyon Natural Gas Storage Facility blowout, affected by the leak, according to a personal injury law firm representing the plaintiffs.

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