Westinghouse Hanford Company environmental surveillance annual report: 100 Areas

Westinghouse Hanford Company (Westinghouse Hanford) performs the near-field environmental surveillance of the Hanford Site 100 Areas to assess and control the impacts of operations. This involves sampling and analysis from the major environmental pathways of exposure to onsite workers. Results of the near-field environmental surveillance program for the Hanford Site 100 Areas are presented in this report. The environmental surveillance program provides sampling and monitoring of several parameters to evaluate the environmental impact of 100 N Area Reactor Facilities and the shutdown reactor facilities and burial grounds in the retired 100 Areas. Discharges to the environment are reported in annual effluent release reports. At the 100 N Area, samples of ambient air, groundwater, vegetation, and surface soil were collected and analyzed. Direct radiation levels also were monitored at several locations. Samples of ambient air, vegetation, surface soil, and sediment were collected to monitor the environmental impact of the 1301-N and 1325-N Liquid Waste Disposal Facilities (LWDF). Direct radiation surveys were conducted for each LWDF and along the Columbia River shoreline. At the retired 100 Areas, vegetation and surface soil samples were collected and analyzed. In addition, samples from groundwater monitoring wells located at the 100 K Area were collected and analyzed. The results are provided in this report