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The Brief

The most important stories for you to know today
  • Students brought home fire debris
    A long, low concrete structure reads Heritage School, and below it, Tustin Unified School District. Behind the structure, a large group of kids and adults stand and walk in front of a building with a green roof that reads "Administration."
    Some parents of Heritage students want more cleaning and testing done to ensure kids are safe from toxic fallout from the nearby hangar fire.

    Topline:

    The day after the fire broke out in Tustin, some students at Heritage Elementary were given plastic bags to collect and bring home charred pieces of the historic hangar that had floated onto school property, according to several parents.

    The details: One parent told LAist that on Nov. 8 her fifth grade daughter brought home a Ziploc bag with a small piece of black, charred material. Another parent posted a photo on social media of a plastic bag full of large black and gray pieces of debris that they said their son had brought home from Heritage.

    Why does this matter? Some debris from the Tustin hangar fire contained up to 37% asbestos, a material that can cause long-term health consequences if the fibers are inhaled.

    What have school leaders said? School leaders have not responded to repeated requests for interviews about the incident. It's unclear whether they were aware of the potentially toxic makeup of the fire debris. After public health authorities announced that debris had tested positive for asbestos, on Nov. 8, all Tustin schools were closed.

    KEY DETAILS

    • Fifth graders at Heritage Elementary school were given plastic bags to collect charred pieces of hangar that landed on school property, according to several parents. The school sits less than a mile from the 180-foot tall hangar that was destroyed by flames.  

    • Some debris from the fire was found to contain up to 37% asbestos, a material that can cause long-term health consequences if the fibers are inhaled.  

    • Documents on Tustin’s website, as well as an Orange County Grand Jury report and a report commissioned by the Navy, showed that the hangar contained asbestos, lead and other toxic materials.

    • Smoke and debris from building fires are generally more dangerous to human health than wildfires because of the widespread presence of toxic materials in homes and businesses.

    • Homes near the hangar fire have tested positive for lead and asbestos, leading some parents to question whether Heritage, and another school near the burn site, have been thoroughly cleaned and tested. 

    The day after the fire broke out in Tustin, some students at Heritage Elementary were given plastic bags to collect and bring home charred pieces of the historic hangar that had floated onto school property, according to several parents.

    One parent, who asked to remain anonymous in order to protect her family's privacy, told LAist that on Nov. 8 her fifth-grade daughter brought home a Ziploc bag with a small piece of black debris from the fire.

    Her daughter told her she had picked it up with her bare hands. The parent said "the teacher was fully aware."

    That same day, air quality authorities reported that debris from the fire contained up to 37% asbestos. The school sits less than a mile from the 7-acre hangar that was destroyed by flames.

    The parent said she immediately threw the bag with the fire debris away. The material her daughter had collected, she said, was "paper-light" and easily breakable. Asbestos is most dangerous when the individual fibers are released into the air and can be inhaled and get trapped in the lungs.

    A second parent posted a photo on social media of a plastic bag full of large black and gray pieces of debris, according to a screenshot shared with LAist by another parent of a Heritage student. The parent who posted the photo wrote in the post that their son had brought the bag home from Heritage.

    In response to an interview request, Heritage principal Courtney Smith referred LAist to district communications officer Rina Lucchese. Lucchese and other Tustin Unified officials have not responded to repeated requests for an interview.

    Tustin Unified board member Allyson Muñiz Damikolas told LAist she didn’t have a response to reports from parents about the incident and added that district leaders responded to public health warnings and "reacted to the information as soon as we received it."

    The fire debris incident is one of what parents describe as several missteps taken by Tustin Unified School District during its early response to the fire. And this week, as hundreds of students return to Heritage and Legacy Magnet Academy — the two schools closest to the fire that had been closed for testing and cleaning — private test results in adjacent neighborhoods are raising new concerns about toxic fallout from the fire. The findings are heightening concerns among some parents about whether the newly reopened schools are truly safe from potentially toxic fire debris.

    A person looks through a fence at a massive structure on fire, with at least half already destroyed by the flames.
    The historic hangar in Tustin caught fire in the early hours of Nov. 7. The massive World War II-era wooden hangar was built to house military blimps based in Southern California.
    (
    Jae C. Hong
    /
    AP
    )

    What happened at Heritage Elementary after the fire

    Classes continued as normal at Heritage for two days after the fire began.

    A photo shared with LAist by a parent shows Heritage students sitting on the blacktop on campus. It was taken at 8 a.m. on Nov. 8, according to the metadata. Meanwhile, Heritage principal Courtney Smith told parents in emails reviewed by LAist that were sent on Nov. 7 and Nov. 8 that students would remain indoors during recess and lunch. The email on Nov. 8, stated that school leaders continued "to minimize student and staff time outdoors."

    In the same Nov. 8 email, she told parents that "the minimal debris that has been found on campus has been safely removed by our custodial staff."

    Later that evening, Tustin Unified officials announced that all school campuses would be closed following testing by the South Coast Air Quality Management District (AQMD) that found asbestos in fire debris.

    In the days after the fire broke out, asbestos-laden debris was detected at Tustin schools as far away as Hicks Canyon Elementary, which is about three miles from the burn site, and at Tustin High School, which is two miles from the site, according to the county's initial report of the incident to state authorities.

    Most schools in the district were reopened by Nov. 15 after receiving clearance from the district-contracted asbestos consultant. Students at Heritage and Legacy were dispersed at schools across the district by grade level until this week.

    Tustin school board member Jonathan Abelove, whose district includes Heritage and Legacy, did not respond to an email request for comment. LAist was unable to reach him at several listed phone numbers.

    For one parent, regrets and worries

    The parent whose daughter brought home fire debris said she regrets sending her two children to Heritage on the two days after the fire broke out. "That's eating us alive to this day," she told LAist in a phone interview.

    She said she and her daughter developed a bad cough a week after the fire broke out. The family ended up leaving their Tustin home for a week to stay in Newport Beach in order to limit their exposure to potential toxins while the fire was still heavily burning.

    The fire was finally declared extinguished by Orange County fire officials on Dec. 1.

    "The saddest part," the parent told LAist, is how distraught her fifth-grader became when she found out that she had been exposed to a potentially dangerous material, asbestos. "She was asking, 'Am I going to get cancer?'" the parent added.

    Cranes are attached to metal pieces hanging off of very tall metal doors. Next to the doors, you can make out burnt material. Yellow caution tape is being used to mark off the work area.
    Cranes were needed to safely lower the entrance doors to the hanger, which remained after the rest of the structure went up in flames.
    (
    Jill Replogle
    /
    LAist
    )

    What did school officials know?

    It's unclear whether school officials were initially aware of the likelihood of asbestos and other chemicals present in the massive blimp hangar that burned to the ground. But some parents said the district should have erred on the side of caution considering the circumstances.

    Building fires are generally more toxic than wildfires because of the widespread, and often unknown, presence of toxic materials in homes and businesses. The hangar was widely touted as one of the largest wooden structures in the world — 180-ft. tall, three football fields long and one football field wide.

    It was built in 1942, when asbestos and lead paint were widely used in construction.

    Documents on the city of Tustin's website note the extensive use of asbestos-containing materials and lead paint in the building's construction.

    According to a 2000 report commissioned by the Navy, asbestos was present in roofing materials, wall panels, pipe insulation and floor tiles. Some of this asbestos was "friable," meaning it breaks or crumbles easily and therefore poses a greater risk of being inhaled, which can cause long-term health consequences.

    A 2020 report from the Orange County Grand Jury also noted that hazardous materials, including "asbestos, lead, biological contaminants, and groundwater contaminates," had been identified in the hangar's nearly identical twin hangar, which also sits on the 84-acre former military base in Tustin.

    According to Chris Dunne, a Navy spokesperson, samples of treated wood from the hangar had been analyzed in the past and found to contain "detectable concentrations of aluminum, arsenic, boron, barium, calcium, cadmium, cobalt, chromium, copper, iron, potassium, magnesium, manganese, sodium, nickel, phosphorus, lead, silicon, and zinc."

    Dunne told LAist the Navy had not communicated directly with the school district about potential public health concerns after the fire broke out. "The city of Tustin is the lead agency for cleanup efforts, interagency coordination, and public communication," Dunne wrote in an email.

    Tustin Mayor Austin Lumbard, who has three children at Heritage, told LAist that he didn't know "in an official capacity" that there was asbestos and other toxins in the hangar building until he was alerted to the test results by the South Coast Air Quality Management District on Nov. 8. Still, "we all knew there was something in there," he said.

    "I think the community that lives out here was aware that these were constructed in the ‘40s and that there was material used in that construction that potentially is not used now," Lumbard said.

    The mayor also said people had wandered onto the property for years. In 2019 firefighters had to rescue a teenager who had climbed onto the roof of the hangar.

    Asked whether he was concerned about the school district's initial handling of the fire response, Lumbard said: "I know the school district is taking this very seriously and they're leaning on and relying on information that they're getting from the Navy and from the Orange County Health Care Agency."

    Regina Chinsio-Kwong, who heads the county health care agency, told LAist she first learned there could be toxic materials in the burning hangar that could pose a health risk when a consultant for AQMD called her on the evening on Nov. 7.

    "I didn't have a full report, it was more of a verbal concern," she said.

    Chinsio-Kwong said she had a call with AQMD staff the following morning to better understand the concerns. AQMD issued a smoke advisory on Nov. 7. It wasn't until Nov. 8 that they issued an advisory noting the presence of asbestos in testing results of ash and debris from public areas near the hangar fire.

    Do you live in or near Tustin?

    LAist interviewed and requested information from local, state and federal officials, and outside experts, about the post-fire recovery efforts and residents' health and safety concerns.

    • Read our guide for details and answers to commonly asked questions.
    • Have a tip about the hangar fire? We welcome your insights. Contact our Orange County correspondent Jill Replogle at jreplogle@scpr.org

    Jeff Lawrence, whose daughter attends Heritage, emailed district and city officials twice on the morning the fire broke out, urging them to immediately start testing the air and soil for toxins.

    The hangar building contains "all sorts of potential hazardous materials raining ash all over our neighborhood," he wrote. In one of the emails, he also excoriated school officials for keeping Heritage open "when you have literally zero idea if it is at all safe."

    In an interview with LAist earlier this month, Lawrence said "the county and everyone had these reports,” referring to the Orange County Grand Jury report and documents on the city's website.

    “From a logical perspective, as soon as you knew that that thing was burning, [toxic material] was going all over the place," he added.

    Lawrence was livid that kids were outside while the fire burned, and that the school allowed kids to touch and take home debris from the fire. He said he blames the school district for not ensuring that students were kept inside and away from potentially toxic material.

    "Ultimately, the buck stops with them," he said. "They made the decision to keep these schools open. They did not insist that the principal at [Heritage] keep all the kids inside."

    Lawrence said he wished the district had immediately closed Heritage and offered distance learning instead. At nearby Legacy, school officials canceled in-person school when the fire broke out on Nov. 7 and instead held virtual classes.

    Public health experts weigh in

    LAist reached out to public health experts to better understand the risks associated with asbestos. Richard Castriotta, a pulmonologist at the University of Southern California's Keck School of Medicine, said reports of children handling asbestos and potentially bringing it into their classrooms or homes were "concerning."

    "We don't really know what a safe level [of asbestos] is," he said.

    But, he added, "in order to be dangerous, the asbestos has to be in a form that people can inhale." He said large chunks of asbestos-containing material, if disposed of properly, are less dangerous.

    Tustin Unified recently released the results of surface and air testing done in November at Heritage and Legacy that showed no asbestos was detected on either campus. The testing was done in high-traffic areas including the main office and gym at Legacy and the administrative office and several kindergarten classrooms at Heritage.

    Orange County Public Health Officer Regina Chinsio-Kwong said her office had also tested for lead at Legacy and Heritage on the heaviest days of smoke and did not detect elevated levels. She said as a whole, the official results from air quality and surface testing in the community nearest to the fire had been "reassuring." (Private testing has shown otherwise, as we explain below.)

    In a Dec. 13 letter to Lumbard, the Tustin mayor, and the rest of the city council, Chinsio-Kwong said testing by multiple agencies, including the EPA, "suggests that the main concern for asbestos exposure was from bulk debris while asbestos fibers in the air played a limited role."

    Chinsio-Kwong also wrote that environmental experts on the fire's emergency response team had concluded that testing indoor spaces "is not necessary, thanks to reassuring test results from nearby facilities," including public schools, local parks and community centers.

    Nevertheless, Tustin officials announced Wednesday evening that they plan to sample soil and interior spaces for toxins from the fire.

    "The City appreciates [the O.C. Health Care Agency]’s scientific conclusion that interior residential testing is unnecessary based on the extensive available data," Lumbard said in a news release. "However, in a collective effort to go above and beyond what is required to address lingering community concerns, the City is moving forward with performing exterior soil and interior air/dust sampling for asbestos and lead.”

    He said the timing and location of sampling was being developed in consultation with the EPA and would be shared in the coming days.

    Workers in white suits and orange safety vests, some with masks on, stand around a van in a residential neighborhood.
    More than 600 disaster remediation workers have been dispatched to clean up fire debris tainted with asbestos on the former military base and in surrounding neighborhoods.
    (
    Jill Replogle
    /
    LAist
    )

    John Balmes, an air pollution expert and physician member of the California Air Resources Board, echoed Chinsio-Kwong, saying the reported results from air and surface tests at Tustin schools were "pretty reassuring."

    "If they tested several classrooms a week after the fire started when smoke was the highest concentration, that's probably good enough in terms of the schools," he said.

    Balmes said the people most likely to be exposed to dangerous, airborne asbestos fibers were the firefighters who responded to the fire, not children attending a nearby school weeks after the fire burnt out.

    Disaster experts contracted by the city of Tustin have sealed in place the dust and debris immediately around the former hangar site with an adhesive substance.

    Work to take down the hangar doors and adjacent structures — which Chinsio-Kwong had recommended be completed before schools reopened — was finished on Monday, according to the city's latest update.

    The Navy announced this week that it had finalized a $6 million contract with a remediation company to clean up and dispose of debris from the fire. But Navy officials said they don’t know when the work will actually start.

    “Before we can take action, debris removal plans must be reviewed and approved by state and federal regulatory agencies to ensure the safety of both the community and the environment,” said Gregory Preston, who directs the Navy's base closure program, in a news release.

    What happened as students returned to Heritage this week

    In an email last week to parents announcing the reopening of Heritage and Legacy, school district officials said both schools would undergo extra cleaning, including of ducts, carpets and rugs, "out of an abundance of caution and in response to potential concerns within our community."

    Tuesday was Heritage students’ first day back on campus following a more than month-long closure due to the fire.

    During afternoon pick-up, Heritage students streamed out of the school gates carrying handmade ornaments and construction paper Santa Claus cutouts. Ravi Chilakapati, who was picking up his kindergartener and third grader, said he had had some concerns about the school reopening but felt good about the information he had received via school emails detailing extra cleaning that would take place before students returned.

    "At least for now, we are happy to be back," he said, adding that the past weeks of dropping off and picking up his kids from far-away school sites was "kind of horrible."

    Still, he said he wished school leaders had closed Heritage as soon as the fire broke out. "We would have zero concerns if that had happened," he added.

    Peter Thok, who also has two kids at Heritage, said he was "really happy" that the school had reopened and he no longer has to drive his kids to alternative campuses. He said he was satisfied with the school's asbestos testing and cleaning protocols.

    "They took extra precautions, which is good," he said.

    But he echoed Chilakapati in saying he thought the school should have been closed during the first two days of the fire.

    "That's when the fire was raging the most," he said. "That's when it felt like we had the most debris in our house so for sure, it should have been closed."

    About 18 adults and small children stand near or walk out of a gate in front of a school. Some of the kids are holding cut-out Santas.
    Heritage students returned to campus on Dec. 19, more than a month after a fire broke out and consumed a massive World War II-era hangar less than a mile away.
    (
    Jill Replogle
    /
    LAist
    )

    Thok and Chilakapati were both unaware that students at Heritage were allowed to bring home debris from the fire until they were asked about it by LAist.

    Thok said, across the board, communication and direction from local authorities has been poor throughout the fire response.

    "You could've had guidance that let the teachers know and the parents know what not to do and what we can do," he said.

    Nearby homes test positive for asbestos and lead

    Sean Storm, who has a child at Legacy and another at Heritage, told LAist he was concerned that authorities hadn't done enough testing at the schools and hadn't tested for a full range of heavy metals. He also said he and other parents would like to see the results of the lead testing Chinsio-Kwong said her department had done at the schools in November. "I just want to know it's safe," he said.

    On Wednesday, Storm shared with LAist and school and district officials the results of testing done earlier this month in his neighborhood, which is across from the hangar burn site and about a mile from Heritage. The tests, conducted by AQS Environmental Services and paid for by a local homeowners association, found asbestos and lead in all 20 samples of suspected fire debris collected from buildings throughout the community.

    Federal public health officials say even low levels of exposure to lead can damage children's health and development.

    Storm also shared testing ordered by his insurance company and conducted on the inside and exterior of his home that showed lead levels in soot on his windowsills exceeded the EPA’s lead hazard levels in dust by at least 14 times.

    The testing also found elevated levels of arsenic and barium. The report recommended that the family move out "until all cleaning is completed."

    A metal box sits on a tripod attached by wired to a large black box. It sits next to a fenceline. In the distance, you can make out homes and trees across a street on the other side of the fence.
    The EPA is monitoring air quality around the perimeter of the former military base and in multiple locations in the surrounding community.
    (
    Jill Replogle
    /
    LAist
    )

    The test results left Storm uneasy. If his home less than a mile from the burn site wasn’t safe to occupy, he wondered how the school could be safe for kids.

    "Were the tables power washed and clean?" he asked. "There are gazebos that cover the picnic tables [students] eat off of. Was that cleaned? I just want to know …is the school truly, actually clean?"

    Tustin’s fire clean up costs over $45 million so far

    Balmes, the air pollution expert, said public health officials could do additional testing of outside areas on local school campuses for arsenic and lead, the two heavy metals initially detected in smoke plumes from the fire, to "assuage parents' fears." "That's not unreasonable," he said.

    Balmes added that the rain this week should wash away much of the remaining ash and soot from the fire in the community, significantly reducing people's likelihood of exposure.

    According to the latest update from Tustin officials, work to remove potential asbestos-containing fire debris from homes near the former hangar is about 85% complete. In a news release earlier this week, city spokesperson Stephanie Najera said Tustin’s clean up costs for the fire total over $45 million.

    The Navy owns the property where the fire took place and has committed $11 million to the clean-up thus far.

    Najera said the total cost of recovering from the disaster could exceed $100 million.

  • Inside California's last nuclear power plant
    two large cylindrical stone buildings rise up against a blue sky, surrounded by a number of smaller, mostly gray buildings.
    The Diablo Canyon Power Plant in San Luis Obispo on Feb. 13, the state’s only active nuclear power plant. All eyes are turned to power plant as the debate about extending its life returns to Sacramento. But what’s it like inside?

    Topline:

    Diablo Canyon is California’s last operating nuclear power plant. Just years ago, the plant was slated to close, and employees worked to decommission it, until a 2022 about-face by Gov. Gavin Newsom led the state to extend its operations to 2030. Now lawmakers in Sacramento are talking about allowing it to operate even longer, potentially to 2045.

    What do those who oppose the plant say? Local groups, some of whom have protested the plant since its construction, are banging the drum ever louder about their concerns for safety or a catastrophic meltdown, as well as the danger posed by spent nuclear waste at a site near several seismic fault lines.

    What about academics? Academics are furiously analyzing how much keeping Diablo Canyon open would cost and if it would support or hinder the state’s clean energy transition. And business groups are lining up in support.

    Read on ... for a rare look inside the last operating nuclear power plant in the state.

    The most striking view off one of San Luis Obispo County’s winding coastal roads is not the lashing ocean waves of the Pacific Ocean or cows plodding out from the shade of a California live oak tree.

    It is two enormous concrete domes that come into focus along a final climb that began 7 miles back at Avila Beach. The land sinks away, and what looks like a small town emerges, showcased in a palette of grays, whites and terracotta.

    This is Diablo Canyon, California’s last operating nuclear power plant.

    Just years ago, the plant was slated to close, and employees worked to decommission it, until a 2022 about-face by Gov. Gavin Newsom led the state to extend its operations to 2030. Now lawmakers in Sacramento are talking about allowing it to operate even longer, potentially to 2045.

    But local groups, some of whom have protested the plant since its construction, are banging the drum ever louder about their concerns for safety or a catastrophic meltdown, as well as the danger posed by spent nuclear waste at a site near several seismic fault lines.

    Meanwhile, academics are furiously analyzing how much keeping Diablo Canyon open would cost and if it would support or hinder the state’s clean energy transition. And business groups are lining up in support.

    So when PG&E offered press tours earlier this year, KQED accepted. The nuclear power plant has not garnered this much attention in years, but now, once again, all eyes are on Diablo Canyon. What does it look like inside?

    Out on the water

    PG&E’s Diablo Canyon Power Plant tour started on a boat in a protected marina just south of the reactors. This, and another cove just outside the breakwaters, are the site of a key piece of the plant’s cooling system — and a major concern for environmentalists, who argue it hoovers up and kills marine life and have called it “the most destructive facility” along California’s coast.

    Dipping a hand in Diablo Cove, the water is lukewarm, not the frosty standard for the ocean in these parts.

    That’s because Diablo Canyon draws 2 billion3-2.5 billion gallons of ocean water daily — enough to fill more than 3,000 Olympic-size swimming pools — into the plant to cool equipment, and discharges the water back into the ocean typically 16 to 17 degrees hotter.

    The warmer water makes it feel as if a chunk of Southern California’s coast has been lobbed off and transferred north.

    Out on the water, there was a hotbed of animal activity: a floating sea otter and chubby seals sunning themselves on rocks.

    There were other species too — sea bass, stingrays, and California’s state fish, the garibaldi, which typically live farther south along California’s coast, but have moved here.

    Diablo Canyon staff said the warm water leads to essentially no change to the environment. Because fishing and other activities are not allowed within 2,000 yards of the plant, it’s a “de facto marine sanctuary,” said Tom Jones, a senior director in charge of future planning for Diablo Canyon.

    But the California Coastal Commission, the state agency tasked with protecting the coastline and its natural resources, reported in 2025 that the plant’s cooling system kills almost two billion larval fish annually, plus other organisms that aren’t measured.

    While adult populations may be abundant in Diablo Cove, the commission wrote that adults often appear far from where they spawn, and their presence here may be the result of productive marine habitats nearby.

    The commission also warned that removing eggs and larvae near Diablo Canyon leads to “a significant reduction” of species dozens of miles from the plant.

    “These planktonic organisms,” wrote the commission, “constitute the base of the food web in California’s coastal waters.”

    To the turbine deck

    We donned hard hats and safety equipment and passed through heavy security to enter the “protected area,” which consists of spaces closer to the nuclear reactors.

    We entered the turbine deck, an industrial building the size of two-and-a-half football fields. It was hot and loud on the deck, with a slight vibration underfoot.

    The steam-driven turbine inside is an enormous semi-cylinder that looks like a horizontal steel pipe cut in half, and spins a generator to produce electricity.

    The PG&E guide pointed out the window at a containment dome, where uranium atoms are split apart, releasing huge amounts of heat.

    A cascade of effects follows: the heat warms water and creates steam, the steam travels through pipes to turn the turbine, the turbine connects to a generator, which makes electricity that’s then sent across the grid and delivered to about three million Californians.

    Nuclear generates nearly 9% of the state’s energy supply, part of an energy mix that includes gas, hydroelectric, solar, wind, geothermal and even small amounts of coal.

    While California’s demand for electricity has been flat for years, it’s now growing with the adoption of electric vehicles, people swapping gas appliances for electric ones, and data centers.

    The debate to keep Diablo Canyon open is spurred, in part, by this uptick in demand. Maureen Zawalick, senior vice president and chief risk officer at PG&E, said stepping into the turbine deck reminds her of the end uses of all this power: “safety in hospitals, kidney dialysis, stop lights and everything else.”

    California is walking its economy across a tightrope.

    The state’s growth in the 20th century was built on a foundation of fossil fuels, but leaders see its future as being powered by the buildout of renewables like solar and wind, along with batteries to store excess power.

    When heat waves strained California’s power grid and caused rolling blackouts in 2020, state lawmakers and Newsom voted to extend Diablo Canyon’s operation.

    Now, as electricity bills continue to rise and demand is forecast to grow, proponents argue that keeping the plant open even longer can help California wobble across the precarious middle of the tightrope.

    The simulator

    We shed our safety gear and headed to the training building, with classrooms and an exact replica of the control room, called the simulator.

    It was cool and quiet again as employees completed a training exercise, manipulating switches, lights and screens on a semicircle of vertical boards. Zawalick said the simulator’s seafoam green walls are meant to inspire calm, but its very existence is due to nuclear disasters that have occurred elsewhere in the U.S.

    Simulators became a requirement for all nuclear power plants in 1979 after the Three Mile Island nuclear accident in Pennsylvania. The partial meltdown was the most serious nuclear accident in U.S. history and was caused by both human and equipment failure.

    Practicing in a replica of Diablo Canyon’s actual control room is meant to train workers with the muscle memory to handle a variety of emergencies.

    Employees spend 20% of their time in the Diablo Canyon simulator training for everything from planned refueling to routine maintenance to major emergencies.

    Spent nuclear fuel

    To finish the tour, we drove uphill and farther from the ocean to find dozens of hulking concrete cylinders that contain spent fuel, called “dry casks.”

    The nuclear material is the concern of resident groups who fear an earthquake or terrorist attack could destabilize the storage and spew radioactive waste into the ocean or nearby communities. People living nearby are mailed annual emergency preparedness documents and have access to a free dose of potassium iodide, which protects the thyroid gland against radiation.

    Linda Seeley has rallied against Diablo Canyon for decades as a member of the anti-nuclear nonprofit Mothers for Peace.

    “As much as I would love it if nuclear waste were not toxic and lethal to a thousand generations in the future, that’s not the fact. The fact is that it is toxic,” she said.

    Once fuel has been used inside the plant, radiation levels are dangerously high and have the potential to kill an exposed person in minutes.

    The spent fuel spends 7 to 10 years next to the reactors in “wet storage,” a large pool of water treated with chemicals. The liquid absorbs heat and decays of the uranium, which has high levels of radiation.

    The nuclear material is then packed into the double-lined, stainless steel and reinforced dry casks, roughly 20 feet tall. Each is bolted to a 7.5-foot-thick, steel-reinforced concrete pad designed to withstand earthquakes. The fuel requires special handling for tens of thousands of years.

    Diablo Canyon is located roughly 3.5 miles from the Hosgri fault, which presents the main seismic risk to the plant. Another fault, the Shoreline, is closer to the plant, but smaller. Some seismologists are concerned that a quake along the faults could cause a meltdown.

    The U.S. government is legally obligated to take ownership of all commercially spent nuclear fuel, but because the government has not yet built a permanent place to put it, the fuel is stored at the power plant.

    Current solutions like Diablo Canyon’s dry storage casks, while they may be thorough, are only licensed until 2064 by the Nuclear Regulatory Commission.

    Zawalick said PG&E is confident in the storage of Diablo Canyon’s spent fuel, though. She pointed out that nuclear power is “the only energy source that knows exactly where every ounce of our waste is.” The Nuclear Regulatory Commission and PG&E monitor the spent fuel on a daily and annual basis. “It’s secured, it’s inspected, it’s audited, it’s sampled. I’m a fan of all energy sources, but I don’t know where solar panels are sent when they’re done, and batteries, and all of that.”

    Zawalick pointed to the powerful transmission lines carrying energy created here out to millions of Californians: to illuminate rooms for special and mundane occasions, preserve food in refrigerators, run air conditioners, and warm their shower water.

    Order and safety come up frequently on the Diablo Canyon Power Plant tour: background checks, armed guards, seismic protective measures, reminders to hold on to handrails when on steps. The result is a calm and kempt environment, situated on a hillside overlooking the Pacific.

    But underneath the serenity lie the inherent risks of nuclear power, especially when sited near seismic fault lines. Diablo Canyon has been the source of passionate debate as long as the idea of it has existed. And any effort to keep it operating longer will be no different.

    And with that, the tour was over, and the guides returned to their work. A cow made its way slowly across the access road, with no idea of its contentious neighbor.

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  • Here's what not to miss in L.A. and SoCal.
    A troll figure, made from discarded wood and other lefetover materials, appears to look at the camera with a pleasant expression.
    Thomas Dambo's "TROLLS: A Field Study" exhibition is at the South Coast Botanic Garden through October.

    In this edition:

    Spaceballs at Griffith Observatory, Netflix is a Joke kicks off, Trolls take over South Coast Botanical Garden, and more of the best things to do this week.

    Highlights:

    • Where to even begin with all the incredible comedy listings for this year’s Netflix Is a Joke festival? Pretty much every venue in L.A. has a comedy show this week.
    • Griffith Observatory is hosting a very special screening of the best spoof of all time ever (don’t @ me), Spaceballs.
    • L.A. has a wealth of architectural and modern building feats, many of which we have more access to than any other city, given our (relative!) youth. UCLA’s School of Architecture has some of this history on display at the "Core Samples" exhibit, including posters from talks by Frank Gehry and John Julius Norwich and archival materials.

    We all need a good story to start the week, and this one is the best. Pasadena Humane has rehomed its last dog rescued from the Eaton Fire. Artemis, a German shepherd, is happily in his forever home, and now we can all sleep a little easier. What a good boy!

    Music this week includes the last of the free spring lunchtime concerts at the Colburn on Tuesday, May 5. Licorice Pizza has more picks, including Meshell Ndegeocello at Blue Note on Monday and Tuesday. Wednesday, Sports are at the Roxy, Saults are at the Teragram, Waxahatchee and MJ Lenderman play Disney Hall, and over at the Grammy Museum, there’s a screening of the Ann Wilson documentary In My Voice, followed by a conversation with the Heart legend herself. Thursday, The Dear Hunter will be at the Glass House.

    And, happy Cinco de Mayo! Food and drink specials and community celebrations abound on Tuesday.

    Elsewhere on LAist.com, you can catch up on Larry Mantle’s recent interview with Mayor Karen Bass, create a route to see the best street murals around L.A., and grab a ticket to see a live taping of NPR’s Wild Card with Rachel Martin and Tracee Ellis Ross at the Crawford on Thursday, May 7.

    Events

    Spaceballs

    Tuesday, May 4, 6 to 10 p.m.
    Griffith Observatory 
    2800 E. Observatory Road, Griffith Park
    COST: MEMBER ADMISSION, $45, MEMBER ADMISSION, $50 WAITLIST; MORE INFO

    I don’t even really have to say it, do I? Griffith Observatory is hosting a very special screening of the best spoof of all time ever (don’t @ me), Spaceballs. In celebration of the upcoming sequel, Spaceballs: The New One (tbd if that was necessary), star Josh Gad will be on hand and the evening includes parking, drinks and snacks, and photo ops. It’s currently waitlist-only … may the Schwartz be with you.


    Cinemasianamerica

    Through Thursday, May 7
    Laemmle Royal
    11523 Santa Monica Blvd., West L.A.
    COST: FROM $11.50; MORE INFO

    Just in time to kick off Asian American Pacific Islander Month, director Quentin Lee has put together an exciting screening series at the Laemmle Royal, featuring 30 years of Lee’s work. The Cinemasianamerica series runs through May 7 and includes screenings of Ethan Mao, The People I’ve Slept With, The Unbidden, Rez Comedy, and Last Summer of Nathan Lee. The series will wrap with Comedy InvAsian III, a sneak preview of Lee’s stand-up showcase. Most screenings include a Q&A with Lee and fellow cast members.


    Core Samples

    Through Tuesday, June 30, by appointment
    UCLA Architecture and Urban Design
    1317 Portola Plaza, Perloff Hall 1118, Westwood
    COST: FREE; MORE INFO

    L.A. has a wealth of architectural and modern building feats, many of which we have more access to than any other city, given our (relative!) youth. UCLA’s School of Architecture has some of this history on display, including posters from talks by Frank Gehry and John Julius Norwich and archival materials, including VHS tapes, faculty portraits, 35mm slides of student work, travel photographs, office drawings, and posters. It uses a classroom space to allow visitors to explore, so since the exhibit is also a working teaching archive, you do have to make an appointment.


    Netflix Is a Joke Festival

    Through Sunday, May 10
    Netflix Is a Joke Festival 
    Multiple locations 
    COST: VARIES; MORE INFO

    Comedian Pete Davidson onstage, wearing a blue short sleeve jumpsuit and holding a microphone
    WANTAGH, NY - SEPTEMBER 10: Comedian Pete Davidson performs onstage during Oddball Comedy Festival at Nikon at Jones Beach Theater on September 10, 2016 in Wantagh, New York.
    (
    Kevin Mazur/Getty Images
    /
    Getty Images North America
    )

    Where to even begin with all the incredible comedy listings for this year’s Netflix Is a Joke Festival? Whether you’re a theater person (see: Rachel Bloom guesting with Theater Adult on May 7), a fan of roasts (head to the Forum for the Roast of Kevin Hart on May 10), an SNL superfan (Pete Davidson at the Wiltern on May 9) or a podcast junkie (Girls Gotta Eat at the Palace Theatre on May 7), there’s a show for you. I didn’t even mention the 40th Anniversary of Pee-Wee’s Playhouse with the B-52s and Danny Elfman (May 4) or the Lizzo show at the Greek (May 7)! Pretty much every venue in L.A. has a comedy show this week – it might be harder not to see comedy. So find your favorite (or someone you’ve never heard of!) and get a taste of the L.A. and international comedy scene right here.


    Anissa Helou x Now Serving: For Lebanon

    Monday, May 4, 7 to 8 p.m.
    727 N. Broadway #133, Chinatown 
    COST: FROM $11.49; MORE INFO

    A poster promoting the "Annisa Helou for Lebanon" event at Now Serving on May 4, 2026.
    (
    Now Serving
    )

    L.A. Times restaurant critic Bill Addison hosts this conversation with James Beard-winning cookbook author Anissa Helou at cookbook store Now Serving in Chinatown. Helou’s latest is Lebanon: Cooking the Foods of My Homeland, celebrating the diversity of dishes from the Mediterranean country.


    TROLLS: A Field Study 

    Through Sunday, October 4
    South Coast Botanic Garden
    26300 Crenshaw Blvd., Palos Verdes Peninsula 
    COST: FREE WITH GENERAL ADMISSION ($18); MORE INFO

    A large wooden sculpture of a troll holding a notebook with a pen
    (
    South Coast Botanic Garden
    /
    South Coast Botanic Garden
    )

    Thomas Dambo’s oversized trolls are as cute as they are creepy. Twelve of those giants made entirely of reclaimed wood have made their way across the pond to guard the South Coast Botanic Garden until October. Walk through this fairytale land with admission to the gardens or plan a special guided weekend Troll Trek.

  • Bill would require evaluations
    A group of children stand on a brightly colored carpet with large dotted circles in a classroom.
    New amendments to legislation would require independent evaluations of state education programs that spend at least $500 million annually.

    Topline:

    A bill in the state legislature would require evaluations of statewide education programs, like transitional kindergarten. LAist reported in February that the state had no plans to evaluate the new grade for four-year-olds, despite billions of dollars being spent.

    What’s new: The proposed legislation would require independent evaluations of any new education initiative that costs at least $500 a million a year, or $1 billion in one-time funding. In February, reporting by LAist found the state had no formal plans to evaluate transitional kindergarten — a new grade for 4-year-olds in the public school system that was fully implemented this year.

    The backstory: The requirement is an amendment to a larger bill that would restructure the role of the state superintendent, an elected position that currently oversees the state Department of Education. In addition to LAist's reporting, the bill also follow reports from the research group Policy Analysis for California Education, as well as the Legislative Analyst’s Office, that recommend such changes.

    Why it matters: The bill’s author, state Assemblymember David Alvarez, said he was shocked to find out how much the state has spent on initiatives without a plan for evaluation. “I really see this as the opportunity to really cement what I think is a good governance practice, long-term,” he said.

    A bill moving through the state legislature would require independent evaluations of any new education initiative that costs at least $500 million a year or $1 billion in one-time spending.

    The proposed requirement is part of a larger bill that would restructure the role of the state superintendent, an elected position that currently oversees the California Department of Education.

    “That means that as we make massive investments, as have occurred in the last several years, like universal transitional kindergarten, that there is a built-in independent check to tell us what is actually working,” Assemblymember David Alvarez, the bill’s author and chair of the assembly subcommittee on education, said at a hearing a few weeks ago.

    While research shows a child’s early years are critical for learning, in February, reporting by LAist found the state had no formal plans to evaluate transitional kindergarten — a new grade for 4-year-olds in the public school system that was fully implemented this year.

     ”For TK, as you've covered well, you know, it's nonexistent,” Alvarez told LAist.

    The state has spent billions on the program, including $3.9 billion to administer it this fiscal year.

    The amendments to the bill also follow reports from the research group Policy Analysis for California Education, as well as the Legislative Analyst’s Office, that recommend reshaping the role of an elected state superintendent to include evaluation duties. But Alvarez said he thought it was crucial to take the legislation a step further and include a fiscal trigger to make evaluations mandatory, and envisions the requirement to apply to new state spending.

    How would reviews work?

    The bill as currently written only applies to new initiatives, but the superintendent would have authority to order reviews of existing programs like transitional kindergarten.

    "I'm hopeful that as we engage more with the administration on this issue, that there's an interest in evaluating a program like this one of this magnitude and others,” Alvarez said. Other existing programs include the Community Schools Partnership Program, a wrap-around services initiative, and the Expanded Learning Opportunities Program.

    The bill would allow for the independent evaluations to be done by outside research organizations.

    “I really see this as the opportunity to really cement what I think is a good governance practice, long-term,” he said. “ Resources are limited, and we don't have an infinite number of dollars to do all the work we want to do, so we’ve got to make sure that dollars are being used in the best way that serves the most number of students.”

    Have thoughts?

    Who oversees the state's education budget?

    The California State Assembly's Subcommittee on Education Finance and the State Senate's Education Committee are the points of contact for proposals and oversight of public education funding, including:

    • PreK-12 public schools
    • School facilities
    • Community colleges
    • Adult and career technical education
    • California State University
    • University of California
    • The Commission on Teacher Credentialing
    • The Student Aid Commission
    • The California State Library

    Thoughts? Questions? Concerns? Contact members of the state assembly or the state senate.

  • Union says workers are owed millions in back pay
    Three cars of a white train and black windows are visible on a gray track. There is a white arch behind the train. In the furthest background, there is a tower.
    The workers represented by the union have been testing and commissioning the LAX Automated People Mover, which is seen here going through reliability and safety testing in April 2026.

    Topline:

    A subcontractor on the LAX Automated People Mover project owes a group of workers unpaid wages and benefits, according to a grievance filed by the union representing the workers. An arbitrator in March sided with the union in its case against the subcontractor, Alstom Transport USA.

    What does this mean: The arbitrator’s decision calls on Alstom to pay the workers back wages and benefits. The International Union of Elevator Constructors, Local 18, who brought the grievance forward, said Alstom has “already shown that they don’t intend to comply with the arbitrator’s award.” In that case, the general contractor, LINXS, would be liable to remedy the pay issue, according to a copy of the arbitrator’s decision shared with LAist by the union.

    The broader context: Disputes in large-scale capital projects are not uncommon. This is one of many surrounding the Automated People Mover and not the only one to involve subcontractors. Earlier this year, LAist reported about how the main contractor, a group of companies called LINXS, is engaged in legal battles with two of its other subcontractors.

    Read on … for more details about the arbitration.

    A subcontractor on the LAX Automated People Mover project owes a group of workers unpaid wages and benefits, according to a grievance filed by the union representing the workers.

    An arbitrator held a hearing on the matter last December and formally sided with the union in his decision, which was released in March.

    The International Union of Elevator Constructors, Local 18, had argued in a grievance filed in May 2025 that subcontractor Alstom Transport USA has been paying people who have been preparing train vehicles for passenger service and testing parts at a lower rate than what’s outlined in a labor agreement governing the project.

    The union said in a statement to LAist that it is “satisfied” its claims were backed by the arbitrator and that the decision reflects the power of collective action.

    The union added that this isn’t the end of the fight since Alstom has “already shown that they don’t intend to comply with the arbitrator’s award.”

    The arbitrator noted in his decision there is some uncertainty as to how many workers would be affected since some of them were hired directly by Alstom and others through third-party firms. The union says there are 28 total workers who, regardless of how they were hired, should be compensated for their work and estimates Alstom owes them millions in wages and benefits.

    A spokesperson for Alstom said it is “reviewing the arbitrator’s recommendations.”

    “Alstom remains committed to reaching a fair and competitive wage and benefit package that recognizes the valuable contributions of our employees,” the spokesperson said.

    LINXS did not respond to a request for comment.

    Disputes in large-scale capital projects are not uncommon. This is one of many surrounding the Automated People Mover and not the only one to involve subcontractors working on the project. Earlier this year, LAist reported about how the main contractor, a group of companies called LINXS, is engaged in legal battles with two of its other subcontractors.

    Another dispute between the city and LINXS has recently intensified and could also lead to litigation.

    The project labor agreement

    At the heart of this dispute is the collective bargaining agreement that sets wages for on-site construction work, establishes dispute procedures and ensures there won’t be work stoppages over labor issues on capital projects owned by Los Angeles World Airports, the city agency that oversees LAX. The project labor agreement was first forged in 1999 and, in 2020, the airport’s board renewed it for an additional decade.

    LINXS agreed that it would be bound to the agreement and “shall require all of its subcontractors … to be similarly bound,” according to a copy of the arbitrator’s decision the union shared with LAist.

    The union has claimed that the Alstom employees were doing work that is covered by the agreement and that they should be paid accordingly.

    Alstom, according to communications cited in the arbitrator’s decision, said it never signed a document called a Letter of Assent, which formalizes a company’s obligation to follow the project labor agreement, and that, even if it did, its employees’ work isn’t covered.

    The arbitrator’s decision

    David Weinberg, the arbitrator, said the testing and commissioning work Alstom employees did is covered by the project labor agreement. Weinberg added that Alstom consented to abide by the agreement when it signed a contract to work with LINXS.

    “Not signing the Letter of Assent does not absolve Alstom of its contractual obligations to LINXS or to the Union under the [Project Labor Agreement] due to the pass-through provision,” Weinberg wrote in his decision.

    How to reach me

    If you have a tip, you can reach me on Signal. My username is kharjai.61.

    Weinberg said that the Alstom employees should get paid the national wage and benefits rate for the International Union of Elevator Constructors for any hours of work completed starting 60 days before the union filed its grievance. Weinberg also ordered Alstom to provide the hours of work completed on-site.

    Weinberg said in his decision that if Alstom does not comply, LINXS would be on the hook, though for a smaller amount. LINXS would be liable to pay for any hours of work starting 60 days before Nov. 4, when it became a formal party to the grievance.