Alameda Point Environmental Report: Seaplane Lagoon Dredging Update, August 28, 2011
Radioactive radium waste not an issue
The massive pile of dredge mud that has been sitting between the Seaplane Lagoon and the hangars is now dry enough to be tested to determine the exact contaminant profile and hauled away. The contaminant of greatest concern to community has been radium-226, the radioactive ingredient once used to make aircraft dials glow in the dark. Testing revealed that the sediment did not contain elevated radium levels and therefore would not need to be disposed of at a special radioactive waste site. There were several solid objects, referred to as “buttons,” that were found which contained elevated radium. Those objects and the surrounding soil were removed for special disposal.
The piles of dredge soil neatly arranged and numbered next to the old Control Tower are waiting to be hauled away to a hazardous waste disposal site.