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Memorandum
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This day, decontamination work of a yard at a house had being done.
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Maybe because heavy machines could not enter this yard, workers used hoe to remove the soil, and stuffed up soil to containers by shovel.
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The sounds of scissorss heard from left channel is that of lopping branches
as a part of decontamination works.
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According to a worker, to achieve the target level, that is 0.4μSv/h, they
remove about 4 cm depth of soil.
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