Tokyo Electric Power Company, Results of Radioactive Analysis around Fukushima Daiichi Nuclear Power Station:
Results of radioactive nuclide analysis for groundwater at the east side of Unit 1-4 Turbine Buildings and seawater at the port in order to monitor the source, the extent, and the effect of the radioactive materials in the groundwater toward the ocean.
Underground water observation hole No.1, published Jun 28, 2017:
- Gross Beta = 24,000,000 Becquerels per cubic meter (24,000 Becquerels per liter) *1
Underground water observation hole No.3-5, published Jun 27, 2017:
- Tritium = 190,000 Becquerels per cubic meter (190 Becquerels per liter) *1
Full article: Record radiation detected at Fukushima nuclear plant — Multiple locations register highest levels ever measured — “Radioactive materials in groundwater toward the ocean” (ENENEWS)