{"id":21097,"date":"2025-10-24T09:03:32","date_gmt":"2025-10-24T09:03:32","guid":{"rendered":"https:\/\/www.newsbeep.com\/us-ca\/21097\/"},"modified":"2025-10-24T09:03:32","modified_gmt":"2025-10-24T09:03:32","slug":"lessons-from-aliso-canyon-disaster-10-years-ago-on-gas-underground","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/us-ca\/21097\/","title":{"rendered":"Lessons from Aliso Canyon disaster 10 years ago on gas underground"},"content":{"rendered":"\n<p>On an evening 10 years ago, Porter Ranch resident Matt Pakucko stepped out of his music studio and was walloped by the smell of gas \u2014 like sticking your head in an oven, he recalled.<\/p>\n<p>Pakucko called the fire department. It turned out crews had already been up to the Aliso Canyon gas storage facility in the Santa Susana Mountains behind the neighborhood, responding to a report of a leak. Many of his neighbors were beginning to feel ill, reporting issues such as heart palpitations, vomiting, burning eyes and bloody noses.<\/p>\n<p>\u201cI swear I thought I was standing behind a 747 with its engines blowing \u2014 it was not just gas, it was oil smell, it was chemical smell that permeated,\u201d recalled Pakucko, who went on to co-found the advocacy group Save Porter Ranch. \u201cI couldn\u2019t stay out there for 30 seconds. It tasted like f\u2014 gasoline.\u201d<\/p>\n<p>Soon it was clear that this wasn\u2019t just a leak \u2014 it was a blowout. Over the course of 112 days, the Aliso Canyon facility would spew an estimated 120,000 tons of methane and toxic chemicals into the atmosphere. It was the worst natural-gas well blowout in U.S. history, and an environmental disaster whose effects will be unpacked for generations. <\/p>\n<p>The event was widely seen as a wake-up call to the dangers of methane and underground natural gas storage. Methane, a planet-warming greenhouse gas, is about 80 times more potent than carbon dioxide and is responsible for about a quarter of all the human-caused climate change we are  experiencing. A <a class=\"link\" href=\"https:\/\/newsroom.ucla.edu\/releases\/aliso-canyon-birth-outcomes-study\" target=\"_blank\" rel=\"nofollow noopener\">study published<\/a> by UCLA researchers last month  found that women in their final trimester of pregnancy who were living within 6.2 miles downwind of the blowout in 2015 had a nearly 50% higher-than-expected chance of having a low birth-weight baby. <\/p>\n<p>           <img id=\"yt-img-exfJ8VPQDTY\" class=\"absolute\" alt=\"\" src=\"https:\/\/www.newsbeep.com\/us-ca\/wp-content\/uploads\/2025\/10\/1761296610_186_hqdefault.jpg\" loading=\"lazy\" decoding=\"async\"\/>                 <\/p>\n<p>The blowout ushered in a wave of new regulations to strengthen the governance of natural gas storage facilities in California and the United States, as well as new tools and technology to monitor methane emissions. <\/p>\n<p>But 10 years later, some Porter Ranch residents say the wounds still feel fresh, and too many promises have been broken. After the disaster, then-Gov. Jerry Brown called for the <a class=\"link\" href=\"https:\/\/www.cpuc.ca.gov\/-\/media\/cpuc-website\/files\/uploadedfiles\/cpuc_public_website\/content\/news_room\/news_and_updates\/2017-07-19-energy-commission-chair-releases-letter-ailso-canyon-nr.pdf\" target=\"_blank\" rel=\"nofollow noopener\">permanent closure<\/a> of Aliso Canyon by 2027 \u2014 a goal his successor, Gavin Newsom, called a <a class=\"link\" href=\"https:\/\/www.youtube.com\/watch?v=AbBTsj9smmk\" target=\"_blank\" rel=\"nofollow noopener\">top priority<\/a> and vowed to meet even sooner. <\/p>\n<p>Instead, Aliso Canyon remains open, with regulators voting in December to <a class=\"link\" href=\"https:\/\/www.latimes.com\/california\/story\/2024-12-19\/cpuc-plan-potentially-close-aliso-canyon\" rel=\"nofollow noopener\" target=\"_blank\">continue using the facility for years<\/a> \u2014 probably into the 2030s \u2014 citing the need for natural gas to help maintain affordable energy rates and grid reliability in California. <\/p>\n<p>The facility is a key asset for Southern California Gas. In an emailed statement, the company said the state would struggle to meet electricity demand without Aliso Canyon\u2019s storage. The site fuels 17 power plants and helps keep the lights on during the hours that <a class=\"link\" href=\"https:\/\/www.latimes.com\/environment\/story\/2025-10-17\/california-made-it-through-another-summer-without-a-flex-alert\" rel=\"nofollow noopener\" target=\"_blank\">can\u2019t yet be met by solar<\/a>, wind and other renewable resources, the company said. Natural gas still represents about 40% of the state\u2019s electricity supply. <\/p>\n<p>\u201cThere\u2019s a lot of work to do to get off natural gas and oil in California,\u201d said Adam Peltz, senior attorney with the nonprofit Environmental Defense Fund. \u201cThat work is underway, but it\u2019s not complete. If you\u2019ve built an economy on fossil fuels, it takes awhile to get off of it.\u201d <\/p>\n<p>Aliso Canyon was originally drilled as an oil field in the late 1930s before SoCalGas converted it to natural gas storage in the early 1970s. Utilities often use played out crude oil fields as places to pump gas downward under pressure and hold it until it is needed. <\/p>\n<p>Aliso Canyon is one of the largest natural gas storage facilities in the U.S.<\/p>\n<p>In the lead-up to the blowout, SoCalGas was filling the site in preparation for the winter heating season. Crews were using tremendous force to pump gas down a well that was more than 60 years old. But a metal casing on well SS-25 had corroded, and gas began blowing out at very high volumes. <\/p>\n<p>Methane is not visible to the naked eye, but aerial images captured with infrared cameras and released by the Environmental Defense Fund showed a geyser-like eruption of the flammable, climate changing gas \u2014 making it <a class=\"link\" href=\"https:\/\/www.youtube.com\/watch?v=exfJ8VPQDTY\" target=\"_blank\" rel=\"nofollow noopener\">clear to the whole world the magnitude of the disaster<\/a>. <\/p>\n<p>            <img class=\"image\" alt=\"A man with glasses, in a dark jacket and red shirt, stands near people holding a sign and a banner\"   width=\"2000\" height=\"1333\" src=\"https:\/\/www.newsbeep.com\/us-ca\/wp-content\/uploads\/2025\/10\/1761296611_12_\" decoding=\"async\" loading=\"lazy\"\/>         <\/p>\n<p>Matt Pakucko, right, founder of Save Porter Ranch, and other protesters against SoCalGas hold a rally at the intersection of Tampa Avenue and Rinaldi Street on Sept. 28, 2021, in Porter Ranch.<\/p>\n<p>(Irfan Khan \/ Los Angeles Times)<\/p>\n<p>It took nearly four months for  crews to stop the leak. By that time, damage was done. More than 8,000 households were temporarily displaced, businesses were shut down, and two schools were relocated for several months.<\/p>\n<p>Researchers are still working to unpack the health outcomes of the event. SoCalGas, meanwhile, has paid <a class=\"link\" href=\"https:\/\/www.latimes.com\/california\/story\/2021-09-27\/so-cal-gas-settles-over-huge-aliso-canyon-gas-leak\" rel=\"nofollow noopener\" target=\"_blank\">about $2 billion in settlements<\/a> and agreed to operate the facility at a lower maximum pressure.<\/p>\n<p>Officials with the gas company said they have shored up the facility, including replacing the inner steel tubing on all operating wells and conducting continuous ambient methane monitoring. All wells at the site are subject to real-time pressure readings and visual inspections four times a day, among other protocols, SoCalGas said.<\/p>\n<p>\u201cOver the past 10 years, SoCalGas has conducted comprehensive safety reviews and implemented multiple safety layers that protect one of California\u2019s most important assets for energy reliability and affordability,\u201d the company said. <\/p>\n<p>While the maximum allowable operating pressure at the site remains reduced \u2014 about 3,183 pounds per square inch compared with 3,600 pounds per square inch in 2015 \u2014 state officials recently voted to let SoCalGas  <a class=\"link\" href=\"https:\/\/www.latimes.com\/environment\/newsletter\/2023-08-31\/california-allows-more-natural-gas-storage-at-aliso-canyon-methane-leak-site-boiling-point\" rel=\"nofollow noopener\" target=\"_blank\">increase storage at the facility<\/a> to 68.6 billion cubic feet of natural gas from 41 billion cubic feet, outraging many in the community. <\/p>\n<p>But experts say there are silver linings to the disaster. California overhauled its underground natural gas storage regulations to make them the strongest in the nation and among the strongest in the world, according to Peltz, of the Environmental Defense Fund. The changes include more thoughtful rules for well construction, better monitoring and risk management, and improved planning and emergency response.<\/p>\n<p>Congress reacted to the disaster by requiring its regulatory agency, the Pipeline and Hazardous Materials Safety Administration, to issue safety standards for natural gas storage nationwide. In 2016, it adopted best practices recommended by the American Petroleum Institute, which were strengthened <a class=\"link\" href=\"https:\/\/www.federalregister.gov\/documents\/2025\/10\/02\/2025-19340\/pipeline-safety-standards-update-api-rp-1170-and-api-rp-1171\" target=\"_blank\" rel=\"nofollow noopener\">at the beginning of this month<\/a>. <\/p>\n<p>Many states with natural gas storage previously had no regulations at all, Peltz said. <\/p>\n<p>\u201cOn a national basis, the systems will be safer as a result of that change,\u201d he said. <\/p>\n<p>There have been technological advancements too. The infrared aerial recording of the leak captured in 2015 was a relatively new technique at the time, but has now become commonplace. The California Air Resources Board conducted its <a class=\"link\" href=\"https:\/\/ww2.arb.ca.gov\/our-work\/programs\/methane\/ab1496-research\" target=\"_blank\" rel=\"nofollow noopener\">first large-scale statewide aerial methane survey<\/a> in 2016, identifying many of the largest methane sources in the state. <\/p>\n<p>There have also been considerable advancements in the ability to observe methane super-emitters through satellites and remote sensors, according to Seth Shonkoff, executive director at the science research institute PSE Healthy Energy and an associate researcher at the UC Berkeley School of Public Health. <\/p>\n<p>\u201cThe rub is that we know more than we ever have, and we\u2019re perhaps controlling more than we would have if we didn\u2019t have the technology to see them, but we\u2019re still seeing more and more of these large-scale emission events all across the United States and all across the world,\u201d he said.<\/p>\n<p>Methane concentrations in the atmosphere <a class=\"link\" href=\"https:\/\/mrm.psehealthyenergy.org\/\" target=\"_blank\" rel=\"nofollow noopener\">are still rising<\/a>. It is streaming, often constantly, from facilities associated with the oil and gas industry, landfills and dairy farms, among other sources. <\/p>\n<p>            <img class=\"image\" alt=\"View of a storage facility in a hilly area with winding roads \"   width=\"2000\" height=\"1333\" src=\"https:\/\/www.newsbeep.com\/us-ca\/wp-content\/uploads\/2025\/10\/1761296611_395_\" decoding=\"async\" loading=\"lazy\"\/>         <\/p>\n<p>The Aliso Canyon Southern California Gas storage facility on May 28, 2020.<\/p>\n<p>(Robert Gauthier \/ Los Angeles Times)<\/p>\n<p>Methane isn\u2019t the only concern either. Researchers now have a better understanding of what\u2019s in the gas that blew from Aliso Canyon and that continues to be stored in natural gas facilities around the country. Although it is primarily composed of methane, roughly 99% of samples analyzed by Shonkoff and his team have contained hazardous air pollutants such as benzene, hexane and toluene, largely as a result of commingling with depleted oil and other subsurface materials. <\/p>\n<p>Moving forward, he said, it will be critically important for gas companies to disclose to regulators and risk managers what their gas is composed of, so that if it leaks, responders can quickly determine the appropriate response. <\/p>\n<p>\u201cIf we had had that with Aliso Canyon, we could have, within a matter of hours, understood whether people should get out of the way or stay inside, and we wouldn\u2019t have had as many people suffering from health symptoms,\u201d Shonkoff said.<\/p>\n<p>In 2024, the <a class=\"link\" href=\"https:\/\/www.epa.gov\/newsreleases\/epa-finalizes-rule-reduce-wasteful-methane-emissions-and-drive-innovation-oil-and-gas#:~:text=As%20directed%20by%20Congress%2C%20the,statutorily%20specified%20methane%20intensity%20levels.\" target=\"_blank\" rel=\"nofollow noopener\">Biden administration passed<\/a> the first comprehensive rules to limit methane pollution by fining oil and gas developers for excessive emissions. But  this year, the Trump administration <a class=\"link\" href=\"https:\/\/www.reuters.com\/markets\/commodities\/congress-kills-biden-era-methane-fee-oil-gas-producers-2025-02-27\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"nofollow noopener\">revoked the rule<\/a>, which it described as a tax. <\/p>\n<p>At the same time, many natural gas storage facilities across the country are old and require retrofitting to meet current regulations, but such upgrades can be slow and expensive \u2014 often leaving ratepayers on the hook. <\/p>\n<p>Residents near Aliso Canyon have also long feared an earthquake or wildfire in the area. The gas field sits along the Santa Susana fault and is  in a high fire hazard severity zone. SoCalGas says it has numerous safety <a class=\"link\" href=\"https:\/\/www.socalgas.com\/sites\/default\/files\/2025-01\/Aliso%20Canyon%20Safety%20Plan%202024.pdf\" target=\"_blank\" rel=\"nofollow noopener\">plans and procedures in place.<\/a> <\/p>\n<p>Perhaps the greatest tension remains between those who wish to see Aliso Canyon shuttered and the officials who say the facility is critically important to California\u2019s energy supply, which is increasingly trying to serve power-hungry  artificial intelligence data centers. <\/p>\n<p>            <img class=\"image\" alt=\"People sitting on a road, holding large posters of officials. Behind them are people in dark uniforms and a hilly landscape\"   width=\"2000\" height=\"1333\" src=\"https:\/\/www.newsbeep.com\/us-ca\/wp-content\/uploads\/2025\/10\/1761296612_701_\" decoding=\"async\" loading=\"lazy\"\/>         <\/p>\n<p>Dozens of Porter Ranch protesters chant \u201cshut it all down,\u201d as they demonstrate at the Aliso Canyon gas storage facility in Porter Ranch on May 15, 2016.<\/p>\n<p>(Francine Orr \/ Los Angeles Times)<\/p>\n<p>California has committed to reaching <a class=\"link\" href=\"https:\/\/www.latimes.com\/environment\/story\/2022-11-16\/carlifornia-unveils-plan-to-reach-carbon-neutrailty-by-2045\" rel=\"nofollow noopener\" target=\"_blank\">100% carbon neutrality by 2045<\/a>. But SoCalGas says it still needs Aliso Canyon. <\/p>\n<p>\u201cSoCalGas is aligned with the state of California in pursuing the technologies and infrastructure that supports California\u2019s climate plan, including clean renewable hydrogen and renewable natural gas, that could, over time with other renewable energy projects, deliver the reliability and affordability Aliso Canyon supports today,\u201d the utility said in a statement. However, any decision to reduce or eliminate operations at Aliso Canyon must be based on genuine reduced demand that is permanent, the company said. <\/p>\n<p>Pakucko, of Save Porter Ranch, noted that the facility was offline for two years after the blowout without an interruption in service. <\/p>\n<p>\u201cTwo years!\u201d he said. \u201cAnd guess what? We managed without the facility.\u201d<\/p>\n<p>For others in the area, it feels like the latest in string of broken promises. <\/p>\n<p>Among SoCalGas\u2019s settlement agreements was a <a class=\"link\" href=\"https:\/\/oag.ca.gov\/environment\/aliso\" target=\"_blank\" rel=\"nofollow noopener\">$120-million consent decree<\/a> with the state of California requiring the utility to fund methane mitigation projects, air monitoring and other initiatives to address alleged harms caused by the blowout. About $25 million of that went toward a <a class=\"link\" href=\"https:\/\/alisostudy.ucla.edu\/\" target=\"_blank\" rel=\"nofollow noopener\">long-term health study<\/a> on the effects of natural gas exposure, which is  being conducted by researchers at UCLA. The results are eagerly awaited.<\/p>\n<p>About $26 million went to a program for dairy digesters in the Central Valley, which capture methane from cow manure before it enters the atmosphere. Many had hoped those funds would be spent closer to home, including former L.A. Mayor Eric Garcetti, who at one point envisioned the mitigation money being used to transform Porter Ranch into a <a class=\"link\" href=\"https:\/\/ww2.arb.ca.gov\/sites\/default\/files\/BARCU\/barcu-attach\/55-alisompdraft-ws-AGNRNlA9AjgFZVQ7.pdf\" target=\"_blank\" rel=\"nofollow noopener\">net-zero community<\/a>. <\/p>\n<p>\u201cThat would have been so great,\u201d said Patty Gleuck, a Porter Ranch resident who served on the community advisory group for the health study. Instead, \u201cthat money went to this dairy digester program that does not benefit this area.\u201d<\/p>\n<p>Like Pakucko, Gleuck recalled suffering health effects during the blowout, including a tightness in her chest and a metallic taste in her mouth that dissipated when she left the area and resumed when she returned.<\/p>\n<p>She still suffers from a chronic cough and uses an inhaler, she said, adding that \u201ca lot of inhalers were prescribed in the area.\u201d<\/p>\n<p>\u201cA lot of people moved away, taking a loss on their homes because they were so sick, or their family members were sick,\u201d she said. \u201cI just don\u2019t think that there has been justice.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"On an evening 10 years ago, Porter Ranch resident Matt Pakucko stepped out of his music studio and&hellip;\n","protected":false},"author":2,"featured_media":21098,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[17130,7,1804,1512,756,48,52,51,47,50,49,17133,17134,17135,3231,17131,225,315,17132,10525,72],"class_list":["post-21097","post","type-post","status-publish","format-standard","has-post-thumbnail","category-los-angeles","tag-aliso-canyon-disaster","tag-california","tag-company","tag-facility","tag-gas","tag-la","tag-la-headlines","tag-la-news","tag-los-angeles","tag-los-angeles-headlines","tag-los-angeles-news","tag-methane","tag-oil-smell","tag-seth-shonkoff","tag-site","tag-socalgas","tag-state","tag-time","tag-underground-natural-gas-storage","tag-well","tag-year"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/posts\/21097","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/comments?post=21097"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/posts\/21097\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/media\/21098"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/media?parent=21097"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/categories?post=21097"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/tags?post=21097"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}