According to Tepco, β nuclides were detected from ground water around the leaking reservoirs.
Detection of β nuclides strongly suggests the possibility that the leaking contaminated water is already penetrating underground.
Tepco assumed it takes up to 100 years for the leaking radiation to reach sea.
(cf, [Leakage] Leaking radiation takes up to 100 years to reach Pacific ocean [URL])
Read Full analysis at Fukushima-Diary]
So TEPCO lies again... 100 years to leach into the ocean FROM SEVERAL HUNDRED METERS?... who are they kidding now?