Quarterly report of Ibaraki environmental radiation monitoring, Apr-Jun 1999

An environmental radiation monitoring was carried out from April to June 1999. The space gamma dose rates in the monitoring stations and posts were less than the upper limit of wide of variability determined by the data monitoring committees The radioactivity in the air dust, fall out and rainwater was not detected. 131I in milk (raw milk) and 3H in seawater were not detected. The radioactivity of off-gas of nuclear installation was not detected or less than the past level by the radionuclide analysis and total beta activity measurement. Moreover, the results of total alpha and gamma activity were not detected or the same level as the past values. (S.Y.)