Hanford Site ground-water surveillance for 1989

Abstract

This replrt was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor Battelle Memorial Institute, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any lnformaUon, apparatus, product, or process disclosed, or represents that its UR would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufo1durer, or otherwise, does not necessarily constitute or imply its endonement recommendation, or favoring by the United States Government or any agency thereof, or Battelle Memorial Institute. The views and opinions of authors expressed herein do I'M)! necessarily state or reflect those of the United States Government or any agency thereof.

Ground-water contribution to dose from past Hanford Operations

“…A plume of uranium-contaminated ground water exists beneath the Hanford 300 Area (see Figure 6.44). This ground water is known to be entering the river in concentrations of about 20 to 30 pCi/L (Evans et al 1990). The plume is located about 4 mi from the area where the water supply wells were found to contain elevated uranium concentrations.…”

“…This uranium affects ground water to the south of the more concentrated plume of enriched uranium (Evans et al 1990). The maximum concentration of uranium with the natural isotopic rat i o found in some of the 300 Area wells is approximately the same or a l i ttle less than the concentrations found in the Franklin County water supply wells.…”

“…The reporting of radionuclides other than gross beta and tritium in the ground water increased with time. Evans et al (1990) and Jaquish and Bryce (1990) provided summaries of the distributions of various radionuclides.…”

Locating Ground-Water Discharge in the Hanford Reach of the Columbia River

“…We found several areas of likely discharge in the surveyed area ( Figure 4.7), including many small areas and one that was notably continuous. These results may be related to the ground-water plume in the region, parts of which have tritium concentrations as high as 200,000 pCiL (Evans et al 1990;Dresel et al 1996). Of the four piezometers installed at the Old Hanford Townsite, the electrical conductivity in all (190 to 29 1 pS/cm) exceeded that of the river (124 to 150 pS/cm).…”

Ground-water contribution to dose from past Hanford Operations. Hanford Environmental Dose Reconstruction Project

“…The reporting of radionuclidesother than gross beta and tritium in the ground water increasedwith time. Evans et al (1990), Jaquish and Bryce (1990), and Woodruff et al (1991) provided summaries of the distributionsof various radionuclides.…”