The US Navy concealed deadly plutonium contamination from San Francisco residents for nearly a year, exposing thousands to cancer-causing radioactive particles.
Story Highlights
- Navy detected airborne plutonium-239 in November 2023 but waited 11 months to notify San Francisco officials
- Contamination levels measured twice the federal safety threshold at former nuclear weapons testing facility
- Delay violated Navy’s own reporting requirements and occurred during planning for 10,000 new housing units
- Site contains 2,000 grams of plutonium-239 from 1950s nuclear ship decontamination operations
Federal Agency Violates Own Safety Protocols
The Navy detected airborne plutonium-239 exceeding federal safety limits during November 2023 air quality tests at Hunters Point Naval Shipyard. Officials failed to notify San Francisco health authorities until October 2024, creating an 11-month communication gap that violated the Navy’s workplan requiring bi-weekly data sharing with regulators. This breach occurred at a superfund site where plutonium-239 inhalation causes cancer with near-certainty.
Historic Nuclear Contamination Threatens Public Safety
Hunters Point served as a decontamination facility for 79 ships irradiated during 1950s Pacific nuclear weapons tests. The EPA designated the 866-acre site as a superfund location in 1989 due to extensive radioactive contamination. Nuclear experts estimate 2,000 grams of plutonium-239 remain buried throughout the facility, with thousands of tons of radioactive sandblasting grit from cleanup operations never properly located or removed.
The Navy confirmed plutonium-239 detection in air-filter samples from asphalt-grinding operations measured approximately twice the federal action level. Environmental advocates characterized the reporting failure as “a brazen violation” of federal cleanup requirements. San Francisco health officials expressed deep concerns about the communication delay, emphasizing that full transparency remains critical for community protection.
Watch:
Pattern of Environmental Mismanagement Emerges
This incident represents the latest controversy at Hunters Point, following 2023 accusations of falsified strontium-90 test results by Navy contractors. The site previously housed secret research laboratories where animals received radioactive material injections. Environmental groups argue the Navy prioritizes cost avoidance over comprehensive cleanup, proposing inadequate four-inch soil caps instead of proper remediation for planned residential developments.
The EPA has requested all Navy contamination data for independent verification while litigation challenges the government’s failure to meet strengthened cleanup standards. With redevelopment plans targeting 10,000 housing units, the delayed notification raises serious questions about whether families will unknowingly move onto dangerously contaminated federal property where proper environmental oversight has consistently failed.
Sources:
US Navy Withheld Plutonium Alert from San Francisco for 11 Months
CBG Statement on the Navy’s Airborne Plutonium-239 Detection at Hunters Point
Radiological History of Hunters Point and Treasure Island Briefing Book
