These water samples were collected at frequencies varying from quarterly to annually. Results are presented in Bisping (2003) and summarized in Poston et al. (2003). These data show a statistical increase in tritium, nitrate, uranium, and iodine-129 along the Hanford Reach.
All these constituents are known to be entering the river from contaminated groundwater beneath the Hanford Site (Section 4.4.3). Measurements of strontium-90 at the Richland pumphouse were not statistically higher than those at the Vernita Bridge even though strontium-90 is known to enter the river through groundwater inflow at 100 N Area.
Measurements of tritium along transects showed higher concentrations near the shoreline relative to mid-river for samples from the 100-N Area, the Hanford Townsite, the 300 Area, and the Richland pumphouse.
The following report documents dumping of radioactive materials into the Columbia river.
“The chief findings:
o Sixty percent of the Hanford Reach riverbed of the Columbia River is contaminated with solid, radioactive waste from Hanford’s thorium-to-uranium-233 productioncampaign.
o The contamination probably resulted from disposal of solid radioactive waste directly into the Columbia River. This dumping occurred just upstream of the D-Reactor outfall.
At that location, there are remains of an old river crossing, which might have served as a radioactive waste disposal system.”
Here is a specific listing of hundreds of types of radioactive isotopes that have been categorized and listed. “In this report you will find a listing of the names of 237 radionuclides that Hanford released into the air and into the Columbia River. This report will also briefly describe what would need to be done to estimate the amount released for each of the radionuclides.
On Thursday, KING 5 challenged the DOE’s assessment of the March 15th release, which stated it was an expected 36-hour event. Based on information from confidential sources, KING 5 learned the release actually lasted much longer, up to five days. […] KING 5 maintains the duration and intensity of the release elevate it beyond what could be considered “expected.” […]
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Hanford – Leaking Radioactive Gas Into Air and Toxic Fluids Into Columbia River; via @AGreenRoad
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