Confusion is spreading among towns and cities tasked with radiation cleanup in the face of a new decontamination policy to be released by the Environment Ministry as early as this month.
The government has been decontaminating areas whose aerial radiation reading is 0.23 microsievert per hour or more, based on its policy of keeping annual radiation exposure for individuals at 1 millisievert or less. It arrived at the estimated dose of 0.23 microsievert per hour by assuming that an individual spends eight hours outdoors and 16 hours indoors.
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