Radionuclides in Peconic River fish, mussels, and sediments

Area of Science:

• Environmental Science
• Radiological Health
• Ecotoxicology

Background:

• Regulatory oversight of Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) actions requires environmental monitoring.
• Brookhaven National Laboratory's proximity to the Peconic River system necessitates assessment of potential radiological impacts.

Purpose of the Study:

• To analyze fish, mussels, and sediments in the Peconic River for radionuclides and uranium.
• To evaluate potential health implications from consuming fish exposed to radioactivity downstream of Brookhaven National Laboratory.

Main Methods:

• Analysis of photon-emitting radionuclides (e.g., 60Co, 137Cs), uranium, plutonium, and americium in environmental samples.
• Sediment coring to 0.37 m, whole fish analysis, and mussel flesh/shell separation.
• Radiological data evaluation by the New York State Department of Health (NYSDOH).

Main Results:

• Radioisotopes detected in sediments; 137Cs, 241Am, and uranium found in some fish; 137Cs and uranium in mussel flesh.
• Specific radionuclides (60Co, 233U, enriched uranium, some 137Cs, 241Am) attributed to Brookhaven National Laboratory; others to fallout or natural origins.
• NYSDOH determined that radiation doses from fish consumption are a small fraction of natural background radiation.

Conclusions:

• Environmental monitoring confirmed the presence of specific radionuclides in the Peconic River system.
• Consumption of fish from the studied area does not pose significant adverse health risks due to radioactivity.
• The study supports regulatory oversight and quality control of CERCLA actions in the region.