This report describes an environmental surveillance study of the near-shore of the Columbia River at the 300 Area of the U.S. Department of Energy's Hanford Site. The study was conducted in August - October, 2001 to coincide with expected low river stage. The low river stage facilitated locating and sampling riverbank spring water and other media along the Columbia River shoreline. River water, riverbank spring water, near shore groundwater, riparian and aquatic biota samples were collected. Contaminants of concern included radionuclides, metals, organics, and anions. A survey of the external radiation levels along the near-shore area was also conducted. The report presents the objectives and regulatory drivers for this study, a description of the sample collection process, analytical results and discussion for both radiological and non-radiological (chemical) samples. In addition, human and ecological dose/risk assessments based upon the analytical results are presented.
Revised: October 8, 2009 |
Published: September 27, 2002