Remedial Investigation Report: White Phosphorus Contamination of Salt Marsh Sediments at Eagle River Flats, Alaska
ARMY TOXIC AND HAZARDOUS MATERIALS AGENCY ABERDEEN PROVING GROUND MD INSTALLATION AND RESTORATION DIV
Pagination or Media Count:
The bottom sediments of the two contaminated ponds in ERF likely contain a large number of very small white phosphorus particles 0.1 mm and a small number of much larger particles 1 mm. The larger particles could provide a lethal dose around 0.25 mg for a small duck such as a green-winged teal. The very small WP particles in the sediments can become suspended in the water column and could provide another source of exposure for waterbirds, fish or plankton. WP poisoning of non-waterfowl species, particularly phalaropes, was documented however, extensive areas of mudflats used by migrating shorebirds in ERF were not sampled and could contain WP. High rates of predation and consumption of WP-containing duck carcasses by bald eagles, herring gulls and ravens indicate that these species are at risk. WP was detected in the tissues of a dead bald eagle found in ERF.
- Water Pollution and Control