Atlantic Richfield Hanford Company semiannual report, BB process development, May 1, 1974 through October 31, 1974 Page: 59 of 74
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ARH-ST-1l8 B
sediments and aquatic organisms.
Surface (ring) and core (30-cm deep) samples were
taken in the Redox swamp and ditch as an initial characteri-
zation.step.
Initial characterization studies of cribs were
conducted using nondestructive instruments for profiling
radionuclides via dry wells. Both gamma and neutron mea-
surements were made.
Approximately 25 detonation tests were conducted
at Stanford Research Institute (SRI) using mixtures of
simulated salt cake and anion exchange resin. A report was
issued on the toxicity of the elements and a simplified
computer program was developed for estimating.the hazard
index of any radioactive waste entity.
Evaluation of Effort
Understanding of local atmospheric-surface inter-
actions has been furthered by these investigations. Resus-
pension studies give assurance -that only a small fraction of
radioactivity is resuspended each year from the BC Crib and
U Pond areas, and also indicate the existence of sources
other than the immediate areas of concern.
The computer models of resuspension and transport
have permitted a factual assessment of downwind airborne
concentrations. The ability to plot trajectories and
downwind concentrations of particles, taking into account
changing windfields and diffusion coefficients as measured
by several stations, provides a valuable tool in airborne
hazard assessment.
Representative samples.of surficial areas and
cores from the same area and sample preparation techniques54
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Fox, R.D. (ed.). Atlantic Richfield Hanford Company semiannual report, BB process development, May 1, 1974 through October 31, 1974, report, January 1, 1975; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1025272/m1/59/: accessed May 7, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.