LA River Foam Contamination
Firefighting water containing foam from Boyle Heights warehouse fire flows into LA River, prompts testing
Millions of gallons of water poured onto a massive warehouse fire in Boyle Heights have carried charred foam and chemical runoff directly into the Los Angeles River, triggering urgent water testing. Firefighters spent eight days battling the blaze at the Lineage cold storage facility — dropping 480 gallons at a time by helicopter — before declaring a knockdown on June 24, Los Angeles Times reported.
Community scientists and UCLA researchers rushed to collect water samples from the river on June 26, one day after the fire was contained. The concern: toxic debris from 50-foot-thick walls packed with polyurethane foam insulation had washed into one of Southern California's most iconic waterways.
Foam-Soaked Floodwater Flows Into the LA River
To fight the fire, crews ripped open the warehouse's corrugated steel walls — each stuffed with dense foam insulation. All the water used to douse the flames had to go somewhere. It ran off the site and into storm drains feeding the LA River, carrying chunks of charred foam and chemical residue with it, according to The Olympian.
Dr. Yoshira Ornelas Van Horne, a UCLA assistant professor leading the testing effort, said the community needs to know if contaminants are "making their way down to the L.A. River." The helicopter drops alone — each dumping 480 gallons — added enormous volumes of runoff to an area already strained by a separate spill of 25,000 gallons of crude oil just weeks earlier on May 22, Los Angeles Times reported.
A 500,000-Square-Foot Freezer Turned Inferno
The Lineage facility at 1400 S. Los Palos Street held 85 million pounds of frozen food — poultry, beef, pork, and seafood. When fire broke out on June 17 at 2:30 PM, a suspected ammonia leak forced firefighters to pull back within 15 minutes, according to Star-Telegram. LAFD Chief Jaime Moore called the building a "giant cooler" and said the thick insulation walls created a "very unique challenge" by trapping heat inside.
The fire is believed to have started during rooftop solar panel testing by a third-party contractor, Lineage Inc. said. The company — the world's largest cold-storage firm — has a record of "dozens of health and safety and environmental violations," according to Charlotte Observer. A similar fire had already hit the same roof in August 2024, causing $6 million in damage.
Boyle Heights Residents Demand Answers on Health Risks
LA City Councilmember Ysabel Jurado demanded that all test results be released in both English and Spanish. She said residents "shouldn't have to guess about what they're breathing." Mayor Karen Bass declared a local emergency on June 20, and Governor Gavin Newsom followed with a state emergency to bring in "specialized expertise and pre-positioning critical supplies," according to Fresno Bee.
Community advocates called Boyle Heights a "sacrifice zone" where working-class Latino residents face overlapping industrial hazards. UCLA's Dr. Yifang Zhu warned that smoke from burning solar panels and electronics carries heavy metals and toxic organics — far more dangerous than "day-to-day air pollution." Over 31,000 workers live or work inside the immediate smoke advisory zone, a UCLA analysis found.
40 Million Pounds of Rotting Meat and a Mounting Cleanup
With 40 million pounds of food left rotting inside after the fire, cleanup crews from Signal Restoration Services began hauling out debris on June 27. The stench was so severe that local business owner Manuel Orozco reported a 70% drop in sales at his nearby restaurant, Los Angeles Times reported. Neighbors described the smell as a "dead body."
Law firms have already begun recruiting victims for potential class-action lawsuits against Lineage and the solar contractors involved. Water testing results from the LA River are still pending. Residents and scientists say the results will determine whether the environmental damage from this fire extends far beyond the warehouse walls — and deep into the river ecosystem downstream.
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